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Improving Utilization With Shared Laboratories

June 28, 2010

As hospitals continue to want to improve utilization of imaging equipment, many are turning to a new solution: shared cardiac/vascular-catheterization laboratories. “It’s going to become increasingly important for hospitals to find imaging systems that are versatile and can meet all of their imaging needs” Allan Berthe, Toshiba’s senior cardiology product manager, explains.

Berthe says that smaller flat-panel detectors are ideal for imaging the heart, but a larger detector is required to cover a larger anatomical area. Toshiba’s dual-plane Infinix DP-i system solves this problem by incorporating two C-arms and two flat-panel detectors on the same unit: a floor-mounted eight-inch panel and a ceiling-mounted 12×16-inch panel. “The two C-arms operate independently; one is dedicated to cardiac cases and the other is dedicated to vascular cases,” Berthe says. “You can quickly exchange those back and forth in less than 60 seconds—a capability no other system in the industry offers.”

Working with a shared system saves valuable hospital space and reduces both maintenance and staff costs, but the advantages don’t end there, Berthe notes. “The smaller flat-panel detector can easily image the heart, but it’s not uncommon for a patient with coronary-artery disease also to have problems elsewhere in the body,” he says. “If you want to perform two procedures on the same patient (looking at the heart and the legs, for example), the DP-i excels. You could use the small panel to look at the heart and then quickly change over to the large panel to look at both legs in one view.”

The Infinix-i DPi boasts multiple features aimed at bolstering its clinical flexibility, including a flexible C-arm for peripheral angiography, optional 3D angiography, a table that can accommodate patients weighing up to 484 pounds, and two liquid-metal–bearing X-ray tubes, one for cardiac work and one for full-body imaging. “The dual-plane systems allows you to do both types of imaging with a lot of freedom,” Berthe says. “The user will never have to compromise on the anatomy he or she wants to image.”

Aquilion ONE’s SVD+ Helps to More Accurately Diagnose Stroke

May 10, 2010

Toshiba’s Aquilion® ONE dynamic volume CT system has changed the scope of brain perfusion analysis by enabling dynamic imaging of the entire brain and dramatically improving the ways physicians diagnose and treat stroke. One feature, available only on the Aquilion ONE, due to its ability to image the entire brain in one rotation, is the Singular Value Decomposition Plus (SVD+) perfusion algorithm. The SVD+ algorithm produces advanced CT perfusion imaging that is unmatched in the industry.

“The Aquilion ONE dynamic volume CT system with the SVD+ perfusion algorithm is emerging as a new standard of care for brain perfusion analysis,” said Erin Angel, PhD, manager, CT Clinical Science, Toshiba. “The fast exam time, high image quality and lower radiation doses of the Aquilion ONE, combined with the more accurate perfusion analysis produced by SVD+, are changing the ways physicians identify and treat stroke quickly.”

Toshiba’s SVD+ Perfusion Algorithm
Brain perfusion imaging in CT is used to determine if the patient has had a stroke and to distinguish which areas of the brain are beyond repair and which areas of the brain may be saved through intervention. Perfusion analysis can help clinicians estimate treatment response and develop therapeutic pathways designed specifically for individual patients. The advanced SVD+ algorithm was developed for the Aquilion ONE to improve the quantitative maps produced by perfusion imaging and to give physicians more accurate data for the evaluation of stroke.

Standard SVD algorithms can sometimes produce perfusion maps that are not completely accurate, since they have difficulty calculating certain delays in blood flow. These blood flow delays, if not identified appropriately, produce perfusion maps that provide unclear results to the physician. Toshiba’s SVD+ is an advanced perfusion algorithm that eliminates these issues. SVD+ is a delay-insensitive SVD algorithm that uses an innovative technique to account for delays in blood flow and perform calculations with faster computation times. The SVD+ algorithm is unique in that it always begins prior to the contrast’s arrival to more accurately quantify the region of the brain being imaged.

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Aquilion ONE Enables Physicians to Prevent Stroke

Pamela Louderback, a grandmother from Taylor Mill, Ky., had been experiencing dizzy spells for months. Although she attributed the episodes to a previous condition, physicians could not accurately diagnose her. Pamela had suffered complications from a surgery, and her left carotid artery had to be completely closed. Pamela suspected that her dizziness was caused by blockages in her right carotid artery, but doctors were unable to confirm her belief.

She went about her daily routine, until one day, after blacking out at work, Pamela found herself at St. Elizabeth Healthcare’s emergency room (ER). Unbeknownst to her and her doctors, she was on the verge of suffering a stroke.

According to Dr. Jeff Dardinger, director of Imaging, Vascular Institute, St. Elizabeth Healthcare, a typical patient presenting with these symptoms would have to undergo a battery of tests and be admitted to the hospital before a diagnosis could be made. For example, a patient would likely have had a CT exam of the head and neck and been admitted to the hospital while an MRA exam was scheduled. After a consultation the next day, the patient would have the MRA. According to Dr. Dardinger, this process could take anywhere from two to four days. For anyone who has had a stroke or knows someone who has, you know this timetable can prove fatal or debilitating.

Fortunately for Pamela, she was taken to St. Elizabeth – the first hospital in Kentucky to purchase an Aquilion® ONE. Because of the Aquilion ONE’s ability to capture the entire brain in one rotation, as well as its ability to show function over time, physicians diagnosed Pamela within an hour and prevented a stroke from occurring at all. This system is ideally suited for detecting neurovascular conditions quickly. It uses 320 ultra-high-resolution detector rows to capture up to 16 cm of coverage, enough to image the entire brain or heart and show organ movement.

Images confirmed that Pamela’s right carotid artery was 90 percent occluded, which significantly reduced blood flow to the brain. By diagnosing this condition within the hour, physicians immediately planned stent treatment to open the artery passage, preventing a stroke.

“Toshiba’s Aquilion ONE allowed us to accurately diagnose the patient quickly, dramatically improving her quality of life,” explained Dr. Dardinger, who interpreted Louderback’s images. “Without dynamic volume CT, the patient would have undergone a series of tests for two to four days, at a minimum, to uncover the occlusion. Being able to diagnose the patient within an hour allowed us to plan treatment immediately and prevent a stroke from occurring.”

“I truly believe this system saved my life,” explained Louderback. “I had several exams over the past few months, none of which could detect why I was having dizzy spells. It wasn’t until I was imaged in the ER, using the Aquilion ONE, that a definitive answer could be found.”

Introduced in November 2007, dynamic volume CT scans an entire organ in a single pass and produces 4D videos that show an organ’s structure, its movement and its blood flow. In comparison, a 64-slice, 128-slice or 256-slice CT scan can capture only a portion of an organ in a single pass, requiring physicians to “stitch together” multiple scans of an organ to get a full image. The new technology helps reduce multiple exposures to radiation and exam time.

Designed for today’s healthcare environment, the Aquilion ONE reduces overall healthcare costs and streamlines diagnosis by replacing several tests with a single, comprehensive exam. The Aquilion ONE’s single exam helps reduce unnecessary testing, as well as the accompanying accumulative radiation and contrast dose.

“The Aquilion ONE can dramatically improve patient care by providing a fast, comprehensive exam for patients suffering from life-threatening conditions, like stroke and heart attack, while helping to lower healthcare costs,” explained Robb Young, acting director, CT Business Unit, Toshiba. “St. Elizabeth Healthcare is an excellent example of where the Aquilion ONE enabled physicians to diagnose and treat a patient before a serious stroke occurred.”

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FDA Clears Portable Viamo Ultrasound

April 1, 2010

In early February, the new portable Viamo™ ultrasound system from Toshiba America Medical Systems received FDA clearance. The Viamo, which was introduced at the 2009 meeting of the RSNA in Chicago, combines the portability of a laptop system with advanced radiology features, according to Erin Owen, product manager in Toshiba’s ultrasound business unit.

“The Viamo comes standard with Toshiba’s advanced features,” she says. “Not only does the system have the imaging features of our high-end products, but also its transducers are interchangeable and can be used with our advanced systems.” The ability to interchange transducers improves productivity and saves money for current Toshiba customers, while new customers will be able to use Viamo transducers with any other Toshiba ultrasound systems that they might implement in the future.

The Viamo weighs less than 20 pounds, making it possible to carry by hand, and is ideal for a range of patient exams, including general, pediatric, emergency, obstetrical/gynecological and vascular sonography. It is also optimized for bedside use, such as assessing blood flow during a transplant. Image quality and color flow are comparable to those of more expensive, cart-based systems, and a simple touchscreen interface, programmable in both panel and tablet modes, ensures ease of use. “The Viamo has radiology-specific features you wouldn’t expect from a handheld unit,” Owen says, “but at only 18 pounds, it’s in the same weight class as other laptop ultrasound systems.”

“The Viamo is specifically designed to provide advanced radiology capabilities in a portable system, creating more comfortable exams for patients,” said Owen. “Providing the best value in the handcarried segment, the Viamo delivers high-quality images for numerous clinical applications.”

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Clinical Case of the Month: Left Pulmonary Artery Stenosis

March 1, 2010

Congenital Heart Disease (CHD) is a birth defect or malformation of the heart which can impact the heart’s structure and function. According to the American Heart Association, nearly 36,000 babies are born with a heart defect each year. While CHD can affect both children and adults and can be life threatening, revolutionary advancements in diagnosis and surgery have made treatment and reparation of such defects possible. In 2008, over one million people with CHD had survived through adulthood.

Cardiac Catheterization is a non-surgical procedure that can be used for hemodynamic and angiographic evaluations of the structure and function of the heart, helpful in the diagnosis of CHD. Transcatheter interventions for treatment of CHD can also be performed using stents, coils, and other interventional devices.

Used in conjunction with the Toshiba Infinix-i cardiac systems, the Toshiba 3D-Digital Acquisition (3D-DA) software package allows physicians to view a three-dimensional perspective of a variety of vascular structures including the pulmonary arteries. 3D reconstruction is ideal for optimizing vessel-viewing angles prior to intervention, providing a better understanding of complex anatomy and helping to determine the proper size of interventional devices to be used for planning and treatment.

Case Study: 3D rotational angiography using 3D-DA software.

Technology: Toshiba Infinix CF-i Biplane cardiovascular cath lab using 3D-DA software.

Patient History: A 14 year old girl born with complex congenital heart disease (interrupted aortic arch, ventricular septal defect) required numerous surgical procedures beginning in early infancy which culminated in a Fontan procedure at age 4. Recently she began complaining of decreased exercise tolerance prompting a cardiac MRI which raised the possibility of a left pulmonary artery stenosis which had not been appreciated during previous cardiac catheterizations despite selective left pulmonary arteriography.

Diagnosis: During catheterization performed via a right femoral venous approach, selective 2D left pulmonary angiography failed to adequately demonstrate any stenosis. Due to the high degree of suspicion a 3D-DA was performed at 30f/s using a 206 degree rotation over a 5 second acquisition while holding respiration. Fifty milliliters of undiluted contrast were injected at a rate of 10 cc/sec to obtain the images shown in figure 1. Reconstruction took 35 seconds and post-processing took another 2 minutes to produce the images shown here. By rotating the reconstructed image 90% caudal (a view, not possible with standard angiography) physicians were able to clearly view the compression of the left pulmonary artery in a front to back orientation. Two overlapping Genesis XD stents were implanted across the area with 12 mm balloon and further dilated to 14 mm to obtain the image shown in figure 2.

In this particular case the use of 3D-DA greatly enhanced the ability to diagnose an important stenotic lesion which was undetected by 2D-DA despite multiple bi-plane acquisition imaging angles. Furthermore, using 3D-DA, post-intervention provided excellent imaging of the vessel stent interface and allowed for improved assessment of the result as well as any potential complication.

Figure 1: Pre-intervention 3D-DA of the branch pulmonary arteries in a child with a significant left pulmonary artery stenosis (arrow) after a Fontan operation. In a standard projection (LAO 21/caudal 7) the stenosis is difficult to appreciate (left), however, after rotating the image to a virtual angle (LAO 35/Cranial 71), the stenosis is clearly visible as shown by the arrow (right).

Figure 2: The same structure seen in the comparable views as above following implantation of two endovascular stents to enlarge the area. Note the excellent clarity and detail of the newly implanted stents and their relationship to the vessel wall.

Pre- (left) and post- (right) 3D-DA spins.

Images courtesy of Dr. Evan M. Zahn, M.D., Miami Children’s Hospital, Miami Florida

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Cardiac MRI on the Leading Edge

February 8, 2010

The American Heart Association estimates that nearly one million US residents die of heart disease annually, and according to the US Centers for Disease Control and Prevention it is the leading cause of death for both men and women. As a result, finding ways to detect heart disease earlier and more accurately are becoming increasingly important. Toshiba’s advancements in MRI are helping physicians quantify heart disease, thus improving diagnosis and treatment.

MRI has long been used to assess the structure and morphology of the heart, but as the technology advances, so do the procedures available to clinicians for quick and accurate diagnosis of heart disease in their patients. “The bread-and-butter sequence is called SSFP [steady-state free precession] cine imaging,” Erin Kelly, clinical science manager for MRI at Toshiba America Medical Systems, explains. “It gives an image of the heart as it moves through the cardiac cycle to tell the clinicians how the muscles are functioning, and they can use these images to calculate ejection fraction and left-ventricular volume.”

The ability to perform SSFP cine imaging is one of many cardiac-friendly features included in Toshiba’s Vantage™ Titan MRI, a 1.5T system that also includes a 16-element cardiac coil that can be combined with the 32-element spine coil. The center elements are smaller, resulting in higher-resolution imaging of the heart, and “the elements in the coils can be turned on and off to optimize the signal-to-noise ratio,” Kelly notes. Various sequences and parameters are selectable from the scanner to facilitate successful evaluation of the heart, including delayed-enhancement, myocardial imaging, retrospective gating, black-blood imaging, and real-time motion correction to name a few. Non-contrast techniques are also available on all Toshiba MR systems. For example, Whole Heart Imaging is one contrast-free sequence that allows physicians to assess the coronary arteries without contrast.

Timothy Albert, MD, is medical director of the Cardiovascular Diagnostic Center at Salinas Valley Memorial Healthcare System, Salinas, California, and he uses the Vantage Atlas system. He says, “We try to use noncontrast imaging as much as possible, both for patient convenience and safety and because of concerns about patients with kidney problems. For scar imaging, you still need contrast, but the other stuff, we can often do without it.”

Albert says that MRI has an important place in the portfolio of modalities used to detect and plan treatment for heart disease. “I use CT for coronary imaging, but that’s a small part of the cardiac question,” he says. “MRI’s strengths are really in functional imaging—the shape of the heart and how it’s beating. There’s an increasing amount of scientific data coming out about new uses for MRI in cardiac care.” Albert and his team even run a two-day training course designed to help educate referring physicians on the robust applications of cardiac MRI.

“MRI is ideal for assessment of the heart-failure patient, looking at the potential causes to guide treatments and diagnostic tests, and we use it to determine whether someone would benefit from being revascularized after a heart attack,” Albert says. “For patients with congenital abnormalities, it’s the gold standard, since CT radiation could be cumulative over time. In the future, we hope physicians will hear about these new uses for MRI and recommend it more frequently.”

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Cardiac-Ready Vascular Labs Optimize Room Utilization

As procedure mixes continue to shift in facilities nationwide, it’s increasingly important for capital investments in imaging technology to offer versatility, according to Allen Berthe, X-ray senior product manager for Toshiba America Medical Systems. That’s why the company’s vascular labs come automatically equipped with features for cardiovascular procedures.

“One of our philosophies is that customers’ needs are changing and it is very likely a system will be required to perform cardiac and vascular procedures, so we’ve tried to gear our systems to maximize room utilization,” Berthe says. “A hospital today may know exactly what it wants, but five years from now, its staffing may change, its requirements may change, and its clinicians may like to do different types of procedures—so we created a system that would give them flexibility.”

Features that are part of the company’s vascular labs include digital subtraction angiography provided, standard, irrespective of system type or panel size, and a stepping feature that allows more efficient and accurate lower-body exams. A third feature is what Berthe calls a “true multitasking digital processor,” which, he explains, “means that if a physician comes in and wants to look at the images taken yesterday on a particular patient, he or she can do that without affecting the procedure currently in progress.” This parallel-processing capability is also included, standard, in Toshiba’s vascular labs.

Berthe notes that all labs are 3D ready; if a facility chooses to upgrade to 3D, the base system is configured to accept it, “so if your practice changes in three years, you can add it.” Labs are also optimized for fingertip-to-fingertip, head-to-toe patient access and coverage. “Our systems are designed to give you unprecedented patient access,” Berthe says. “Sometimes, cases require on-the-fly changes, and our systems can adapt to that. If there’s a lot of additional equipment around, then having an easy-to-position C-arm is really helpful.” He adds that all Toshiba systems are configured using the same base platform, the same features, the same user interface, and the same consoles. “If you’re buying multiple systems from us, you can go from room to room with high confidence because everything’s going to perform virtually the same way,” he says.

Berthe emphasizes the importance of versatile, flexible purchases in an environment of fluctuating reimbursement and potential health care reform. “We’re just making sure we give you a room that can address your clinical needs,” he says. “If you don’t have a cardiovascular program and choose to start one, you can do that. You have a system that’s ready to do it.”

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The Drive for Efficiency in Imaging

December 7, 2009

While efficiency has always been important in health care, the changes we see in today’s environment are requiring the medical community to be even more diligent.  Many are starting to recognize that the right equipment can make important differences.  At this year’s RSNA, Toshiba showcased how its systems are helping health care professionals meet the demands for efficiency without sacrificing quality.

Magnetic Resonance

The patient-focused features of the Vantage Titan™ improve exam efficiency and accuracy while mitigating issues around imaging claustrophobic and bariatric patients.  The Vantage Titan features a large 71-cm aperture open bore and offers the industry’s largest clinical field-of-view (55×55×50 cm).  The bore’s diameter enables technologists to scan patients with greater ease and reduces the feeling of claustrophobia.  Toshiba’s patented Pianissimo™ technology, which reduces acoustic noise by as much as 90 percent, is also increasing the comfort level of patients during exams.  Improving comfort level is critical because it often reduces the need for re-scans, thus improving efficiency.

St. Anthony Hospital in Gig Harbor, Wash., has experienced these benefits first hand.  “The Toshiba Titan has been the workhorse MR system for us and is able to accommodate the wide variety of MR exams we perform each day,” said Gary Leslie, MRI technologist at St. Anthony.  “We are imaging multiple patients a day and have received direct patient feedback that the system is quieter and feels less claustrophobic than other MR systems.  This has helped us to greatly improve exam efficiency and department throughput.”

Additionally, the system’s Atlas integrated coils allow physicians to perform multiple exams without repositioning the patient and also enable feet-first imaging for feet-to-shoulder exams.  This means a more comfortable exam experience and results in enhanced workflow and technologist productivity.  Also, Toshiba’s SPEEDER parallel imaging allows for increased acquisition speed and reduced examination times.

X-ray

Today’s emergency departments are challenged to provide rapid, accurate diagnoses for a variety of patient conditions when time is of the essence. Toshiba’s RADREX™-i digital radiographic system is designed to provide the features emergency departments require to offer the highest level of patient care.

The comprehensive RADREX-i offers a 600-lb. table weight limit, 600 kHU X-ray tube and an 80-kilowatt generator, allowing hospitals to image a variety of patients, including bariatric. The X-ray system enhances workflow with the RexView, a color LCD screen located on the overhead tube crane (OTC). Since the image appears on the OTC, technologists have immediate access to review the image and determine if they have what is needed for diagnosis, ultimately reducing exam time and increasing the chance of a positive patient outcome.

The RADREX-i’s automated features also save time in emergency settings by automating exam selection and X-ray positioning. These features include:

• Auto-tracking to eliminate the need to manually position the X-ray tube detector by providing synchronization for table and wall-stand tracking
• Auto-collimation to save crucial time for the patient and technologist by automatically selecting the correct collimation size for the patient’s body part
• Auto-program to eliminate the need for the technologist to manually select the program on the generator by automatically selecting the correct program
• Auto-center stop to provide visual guidance for fast, simple detector centering

St. Luke’s Community Hospital in Ronan, Mont. uses the RADREX-i in its emergency department.

“When treating emergency patients, acting quickly is critical,” said Steve Sivak, radiology manager, St. Luke Community Hospital. “The advanced features of the RADREX-i help us streamline workflow and accelerate throughput, providing a tremendous benefit to patients when time is limited.”

Ultrasound

Many hand-carried ultrasound systems offer better access to patients when space is compromised, but cannot provide all of the advanced radiology capabilities required to perform exams in today’s demanding ultrasound environment.  Toshiba’s new works-in-progress Viamo™ ultrasound system meets the needs of today’s hospitals by combining portability with high-end radiology features.  Viamo is the industry’s no compromise ultrasound system with advanced radiology capabilities, previously unavailable on hand carried systems.

The Viamo combines the portability of a laptop system with advanced radiology features to deliver outstanding image quality, enhance diagnostic confidence and improve ease-of-use. Developed from a radiology foundation, Toshiba’s Viamo provides the confidence to image patients at bedside, which generally require larger, more expensive cart-based systems. When an immobile patient needs a high-end ultrasound exam, the portable Viamo laptop ultrasound is brought to the patient to improve the patient’s comfort without compromising exam quality.

The new Toshiba Viamo laptop ultrasound system offers:

• Best-in-class imaging capabilities in a laptop size, making it ideal for high-end radiology, vascular, emergency and OB/GYN exams, even at bedside. For example, Viamo is beneficial during liver transplants when medical personnel must image the anastomoses to assess blood flow through the vessels.
• Excellent image quality and color flow comparable to larger, more expensive cart-based systems.
• Ease-of-use with a simple touch-screen interface that is programmable in panel or tablet modes.
• Ability to interchange Toshiba transducers while using the Viamo’s transportation pole, thus improving productivity and flexibility, while saving health care costs by reducing the need to purchase multiple transducers. This unique feature improves productivity and saves money for current customers by using their existing Toshiba transducers on the Viamo.  Additionally, new customers are able to use Viamo transducers with other Toshiba ultrasound systems they may purchase in the future.

Computed Tomography

Overall, Toshiba’s Aquilion® line continues to be focused on exam efficiency and the company has added several new features to help the medical community.  The Aquilion line comes with a host of ^SURETechnologies that automate parts of the exam, which not only provides efficiencies, but also safer exams.  For example, Variable Helical Pitch (vHP) ensures greater workflow efficiency by enabling physicians to complete an exam of more than one anatomical region consecutively – i.e. without stopping to alter the helical pitch of the exam.  Toshiba’s CT line also features items like the iStation, a screen on the gantry that provides automatic exam feedback to the technologist, and a table with a 660-lb. weight limit that also lowers within inches of the ground, enabling patients to sit on the table more easily.

While the entire Aquilion line boasts efficiencies, Toshiba’s Aquilion® ONE is designed for today’s health care environment because it can streamline workflow by providing a more accurate, complete and timely diagnosis with one exam.  The Aquilion ONE can image a patient in 0.35 seconds, whereas conventional helical CTs can take four or five seconds, approximately 10 to 12 times slower.  Beyond its fast acquisition time, the Aquilion ONE can replace several tests with one exam, eliminating the time, cost and staff required to perform additional unnecessary exams.  It also allows physicians to treat at-risk patients immediately and send healthy patients home without additional testing and staff support.

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Beyond Comfort: The Importance of Patient-friendly Features

When patients have to have any diagnostic imaging exam, they are understandably nervous.  Often times the anxiety they feel comes from thinking that a particular exam is going to be difficult, time consuming or uncomfortable.  Toshiba has developed its technology with patients in mind and incorporates many patient friendly features into its systems.  At this year’s RSNA, Toshiba highlighted its patient friendly features.

Magnetic Resonance

For patients undergoing an MR exam, discomfort from claustrophobia and the loud noise of the magnet are among the highest complaints.  To address this, Toshiba developed the Vantage Titan^TM MR, which features a large 71-cm aperture and open bore, offering the industry’s largest clinical field-of-view (55×55×50 cm).  The bore’s diameter reduces the feeling of claustrophobia.  Titan’s ultra short, open bore was designed to increase comfort and improve the imaging of all patients, especially those who are claustrophobic and/or bariatric.  The open bore’s larger diameter enables facilities to scan bariatric patients with greater ease and provides patients with a greater feeling of openness to reduce claustrophobia.

Toshiba’s Pianissimo^TM technology reduces noise by up to 90 percent, making Toshiba’s MR systems the quietest available.  Since the patient experiences lower noise levels with Pianissimo, patients stay more relaxed during exams and fewer motion artifacts are acquired, which helps improve image quality.  Useful for imaging pediatric patients, Pianissimo helps technologists image patients more successfully and reduces repeat exams.

With all of the concern surrounding gadolinium, Toshiba’s proprietary contrast-free MRA techniques enable safer MRA imaging of patients with known renal compromise. These techniques include Fresh Blood Imaging (FBI) for evaluating peripheral vascular diseases of the lower legs and extremities; Contrast-free Improved Angiography (CIA) for easier visualization of smaller vessels; Time-Spatial Labeling Inversion Pulse (Time-SLIP) for evaluating hemodynamic, functional assessments, and visualization of vascular structures; and Time Space Angiography (TSA) to create non-contrast time-resolved imaging with high temporal resolution.  Contrast-free techniques are safer for patients with renal conditions and require less set-up time, so the overall MR exam is completed faster, without compromising image quality.

Computed Tomography

The Aquilion® ONE was specifically developed with patients in mind.  Not only is the comprehensive exam much faster than traditional CT exams – 0.35 seconds versus conventional helical CTs that can take approximately 10 to 12 times longer – but also radiation exposure is dramatically reduced because of volume acquisition.  These patient benefits are especially important during neuro and pediatric procedures.

When a patient comes to a hospital’s emergency department exhibiting stroke symptoms, it can take hours to diagnose and treat the patient when time is of the essence. Toshiba’s Aquilion ONE dynamic volume CT system has the ability to improve the quality of life for patients with neurological symptoms, especially related to stroke, by reducing diagnosis time to minutes. In fact, the system allows physicians to reduce diagnosis time for life-threatening conditions, such as a stroke, from hours or days to minutes. Unlike any other CT system available, the Aquilion ONE covers up to 16 cm of anatomy using 320 ultra high resolution 0.5 mm detector elements to image an entire organ, including the brain, in a single rotation. It can show the organ’s dynamic blood flow and real-time function.  The ability to see dynamic function, such as blood flowing through the brain, is critical for stroke patients in emergency settings and enables rapid and accurate diagnosis when time is critical.

Another reason to select dynamic volume CT is for its pediatric applications.  The Aquilion ONE can significantly lower patient radiation dose exposure and decrease the sedation needed for exams.  Traditionally, when children are imaged using multi-detector CT, sedation is required to keep the patient still long enough to obtain a clear diagnostic image.  The Aquilion ONE’s fast exam time means less patient sedation is required. The system also features Toshiba’s ^SUREExposure™ Pediatric software, which automatically takes inputs on the size and age of each patient and tailors radiation dose to achieve the best and safest image quality for each exam. The software uses protocols selected based on the patient’s age, size and type of exam to ensure patients receive only the radiation required to obtain a clear diagnostic image.  ^SUREExposure Pediatric software comes standard on all Aquilion products.

X-ray Vascular

CT is not the only modality in which radiation is a concern.  Toshiba’s Infinix-i product line incorporates features that help to reduce exposure.  For example, the systems come with fluoro dose level settings and fluoro pulse rate settings.  Toshiba offers the industry’s widest range of pulse rates, which means that physicians have the ability to reduce flyoro pulse rate and fluoro dose level in an exam, providing two quick methods of reducing radiation exposure to the patient.  Additionally, Toshiba’s lateral plane variable isocenter on its biplane systems saves time and exposure.  During biplane positioning, the user will fluoro frontal plane and adjust table panning to center the part of interest.  Next, they will fluoro the lateral plane and adjust lateral isocenter to match the frontal set-up.  No additional fluoro is needed.  Not only does this cut down on fluoro exposure, but it also speeds the exam time, reducing the risk to the patient.

Infinix-i systems also provide the greatest anatomical coverage and patient access in the industry, providing more efficient and safer patient care.  Greater anatomical coverage means that the system moves around the patient, rather than moving the patient.  Moving the patient can introduce greater risk.

The Infinix-i’s tables also are more patient friendly.  Not only are the systems’ table weights the highest in the industry at 550 lbs., but also the tables include thicker pads complete with Tempur-Pedic^® technology, making extended procedures more comfortable.  Also, the new the CAT-880B hybrid catheterization table introduced at RSNA offers the lowest table top height of any catheterization table in the industry.  Toshiba has even introduced accessories that expand the width of the system tables to accommodate larger patients and make the exams more comfortable.

Ultrasound

The move toward portability in ultrasound is helping physicians deliver more comfortable patient care.  The ability to bring a diagnostic imaging system to the patient can often mean that someone already in discomfort does not have to be moved in order to be scanned.

In addition to the Viamo handheld system, Toshiba has continued its focus on portability by introducing the Aplio MX.  Thirty percent lighter than traditional cart-based systems, the Aplio MX enables hospitals to complete advanced ultrasound exams, usually performed with larger systems, on a more portable system without sacrificing quality.  Furthermore, it enables medical staff to easily bring the system directly to the point-of-care.  For example, if someone is on a gurney and should not be moved, medical professionals can easily transport the MX to the patient’s location and get a high quality exam.

Toshiba’s Aplio MX ultrasound system includes:

• 4D imaging to produce high resolution renderings and arbitrary volume cuts in real-time or offline allowing virtual reconstruction in formats similar to CT and MRI.
• Differential Tissue Harmonic Imaging for better imaging of difficult-to-image patients, like bariatric, without sacrificing resolution to give superior border and tissue definition.
• ApliPure to enhance both image clarity and detail definition with real-time compounding technology to simultaneously perform spatial and frequency compounding during transmitting and receiving.
• Advanced Dynamic Flow to provide color Doppler imaging at an unprecedented level and show flow with directional information for even the smallest vessels.
• Precision Imaging to provide more detailed ultrasound images by capturing information from multiple lines to improve definition of the structure and minimizing noise and clutter.
• Elastography to enable a non-invasive medical imaging technique that evaluates tumors based on their stiffness (elasticity) compared to normal tissue.
• MicroPure to help physicians detect micro-calcifications using ultrasound, an imaging technique that is less strenuous on the technician and the patient than mammography, the current gold standard.

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Titan MRI at SDMI: An Imager for Breast & Body

October 1, 2009

When Steinberg Diagnostic Medical Imaging (SDMI), Las Vegas, Nev., installed the Vantage Titan™ MRI system from Toshiba America Medical Systems (Tustin, Calif.) a few months ago, founder Mark Winkler, MD, was particularly looking forward to adding high-resolution breast MRI to SDMI’s capabilities. The addition of Toshiba’s Radiance Plus breast-imaging coil, available on both Vantage Atlas and Vantage Titan systems, meant SDMI could perform high-resolution breast imaging without needing a dedicated breast MRI unit.

SDMI selected the Vantage Titan MRI, a 1.5T system, because, in Winkler’s words, “It’s short, wide, and quiet.” The system features a 71-cm patient aperture and a field of view of 55 by 55 by 50 cm; it also includes Toshiba’s patented Pianissimo^TM technology, which helps to limit MRI acoustic noise. Winkler says the Vantage Titan is “more open than what is considered a conventional open system.”

The wide bore enables the Titan system to accommodate more patients while leaving ample space for the Radiance coil. “It helps make the experience nicer because it’s wider, it’s more open, and we can physically accommodate larger patients,” Winkler says. “The very short and wide bore (as well as the quietness of the system) makes it very patient friendly.”

The versatility and high image quality of the Vantage Titan have inspired SDMI to install the system in multiple facilities. “We are getting a new Titan next month and upgrading two systems to Titans, so we’ll have four within six months,” he says. “At that point, most of our breast MRI will be done on a Titan. It’s equivalent to a dedicated breast MRI, but it’s also a great open whole-body system.”