64 Slice CT Scanners
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Using a 64-Slice CT scanner for coronary angiography has been a growing trend in hospitals in recent years. These scanners first entered the CT market in 2004 and have enjoyed increasing popularity across the US, especially in teaching hospitals.
There are, of course, other pieces of equipment that can be used to get the same diagnosis, but 64-slice CT presents advantages over both of them in several areas. Read on to see why, if you intend to study hearts, a 64-slice CT scanner should be a leading contender for your next imaging purchase.
While a 64-slice CT can't replace your facility's cath lab entirely, it can be an excellent compliment to it, saving time and unnecessary catheterization procedures for patients. Stacked up against 16-slice CT, there's no contest: the 64 does everything the 16 can, and better. On top of that, insurance providers will actually reimburse coronary angiography on a 64-slice CT. If a 64-slice CT is in your budget, there's great potential for it to shine in your cardiac studies.
If you have more questions about CTs, we'd love to help you learn about new 64-slice scanners, refurbished 64-slice scanners, service support, and replacement parts. Give us a call or contact us with a comment below.
The GE Healthcare LightSpeed CT750 High Definition (HD) 64-slice CT system is much faster than standard 64-slice systems. Its Gemstone technology with adaptive statistical iterative reconstruction offers improved spatial resolution and fewer artifacts.
In this era of financial cost-cutting, questions are raised over the true need for 256- or 320-slice computed tomography (CT) systems for cardiac imaging. There are many radiologists and cardiologists who argue a 64-slice CT system is good enough to make a cardiac diagnosis without spending twice as much for the higher-slice systems. However, those who have adopted 256- or 320-slice systems say the quality of the images is superior and leads to better diagnoses in CT angiography (CTA).
While the cost is high, the image quality from a Toshiba Aquilion One 320-slice scanner enables much better patient care through more accurate diagnoses, said Michael Poon, M.D., FACC, professor of medicine and radiology, director of advanced cardiac imaging, Stony Brook University Medical Center, Stony Brook, N.Y.
He explained that the 64-slice images generally have artifacts due to the multiple image stitching, where parts of the heart or vessels are misaligned due to cardiac movement. Table movement during 64-slice imaging can also contribute to artifacts. Poon explained Siemens and some other manufacturers use a continuous table movement; GE scanners move in stages during scanning. The Aquilion One uses a stationary table scanning approach because the imaging volume is so large only one image is needed.
More Clinical Evidence is NeededHowever, there are many cardiologists who insist 64-slice scanning is adequate for cardiac imaging. They feel more clinical evidence is needed to justify the high-cost, higher-slice systems.
Stress Testing on CTMin said the higher-slice systems may offer an advantage in perfusion imaging compared with 64-slice, because of their ability to image the entire heart at once. Up until now, he said only 64-slice systems have been evaluated for CT perfusion imaging. The higher-slice systems will likely show CT can be used for high-quality cardiac perfusion imaging, but clinical studies are needed. These systems also have additional perfusion applications for liver and brain imaging. This may help justify the higher cost, if shared between several specialities.
The Aquilion One 320-slice scanner can complete an entire body scan in three seconds and a heart scan without table movement in less than half a second. Poon said this speed and coverage will allow CT adenosine stress imaging, which is primarily reserved for magnetic resonance imaging (MRI) and nuclear imaging.
Changes in Reading ImagesThe slight misalignments in 64-slice cardiac images lead to many artifacts, which radiologists and cardiologists take into account when reading. However, a 320-slice scanner image eliminates such artifacts. Poon said what you see is the actual, full heart frozen at one particular time.
DLPs were also displayed for scanners A, B and D. For scanner C, DLPs were estimated from the product of the displayed CTDIvol and exposed scan length, as DLPs were not displayed. The exposed scan length (L) is given by the equation:
The term slice refers to the number of rows of detectors in the z-axis of a CT. For example, in an 8-slice CT, there are eight slices of data captured for each rotation of the gantry. The first CT scanners offered single slice CT (SSCT) images but now there are multiple-slice CT scanners (MSCT.) The limitation with using a SSCT was that the thinner slices requiring high image-quality were not achievable unless the region to be scanned was very restricted, leading to low-quality images. A solution to this issue was to utilize the x-ray beam, incorporating multiple rows of detectors, thereby collecting more than one slice at a time and reducing the number of rotations needed. This method also led to the development of MSCT technology. The primary difference in the hardware between the two methods is the design of the detector arrays. SSCT detector arrays are one dimensional, consisting of high numbers of detector elements in a single row, whereas the MSCT allows for each individual element to be divided into several smaller detector elements creating a 2-dimensional array. As seen in the image, as opposed to a singular row of detectors along the fan beam, there are multiple rows of detectors.
In the current market, the commonly available CT slice counts include 16, 32, 40, 64, and 128 slices, with less common ones providing up to 256 and 320 slice CT scanners. The 4 to 8 slice scanners are slowly being withdrawn from the market.
When patients are put through the CT, the circular opening rotates to take a series of x-rays with each rotation taking approximately 1 second. Multiple slice CT scanners initially could take four separate images through each rotation, but technology has improved to the level that CT scanners can now take between 6 to 128 separate images in a singular rotation, meaning that it takes significantly less time to complete a CT scan.
In conclusion, there are many advantages to the multiple slice CT scanners over the single slice scanners; these machines can increase the diagnostic capabilities of the scan, resulting in clearer images for the medical professionals, a diminished exposure of radiation for the patients, and better long-term outcomes. Multiple slice CT scanners will continue to evolve and grow as they have become a primary diagnostic imaging tool.
Better diagnostic images can lead to better outcomes. To provide your doctor with clear, accurate images, Genesis offers a state-of-the-art 64-slice CT scanner. Our multi-slice scanner produces high-resolution images of any part of the body in just seconds.
The 64-slice scanner captures detailed, three-dimensional images of a beating heart in five heartbeats, an organ in one second and performs whole body scans in ten seconds, more than twice as fast as conventional multi-slice CT scanners.
In this blog post, we provide you with a thorough overview of the differences between CT scanner slice types. By the end of this post, you will be able to distinguish between all kinds of CT scan slices. Perhaps, it will even help you find the right system for your specific needs.But before we dive into the different slice categories, let us explain a bit about CT scan slice types in general.
Therefore, the best advice we can give you is to think about your patient flow and your budget when deciding on your new CT scanner. If you only perform general studies, higher CT scan slice types will most likely not be worth it.
They are faster than the 4 and 8 slice CT scanners, therefore if your priority is reduced scanning time, you a have fairly steady patient flow, and you also offer urgent care, a 16 slice CT scanner is a great choice for you.
The main difference is the quicker scan time, compared to the 16-slice CT scanners. The extra slice counts in 32 and 40 provide more coverage per gantry rotation, resulting in time-saving in your examinations. And thus you are able to accommodate a greater number of patients.
Keep in mind that although the 64 slice CT scanner can perform cardiac exams, it still requires slowing of the heart rate. And thus, for advanced cardiac studies, it is optimal to have a CT scanner with more slices.
64 slice CT scanners are the perfect match for practices with moderate to high patient throughput. Especially where reduced scan time is the essence. You can produce diagnostic images within 5-10 seconds.
Furthermore, the 16-slice systems can only do limited cardio and basic trauma examinations, while with the 64-slice systems you are able to execute more advanced trauma examinations and basic cardiovascular procedures.
The 128-slices CT scanners have more rows of detectors, which means that these systems provide larger volume coverage and shorter examination times. This is very useful in cardiac studies.Furthermore, the 64-slice systems can only do basic cardio examinations, while with the 128-slice CT scanners you are able to execute more advanced cardiovascular procedures. Lastly, the price is also one of the differences between 64-slice and 128-slice CT scanners. The 64-slice CT scanners are around 90.000-130.000 euros, while a 128-slice CT system can cost between 120.000 to 180.000 euros.
256-slice CT scanners are able to efficiently scan the whole body in seconds, whilst reducing the scan time and being able to image the entire heart in one heartbeat.They provide visual details about the structure and function of the heart in high-resolution 3D images.These systems are used primarily to detect coronary artery diseases and to assess coronary artery bypass grafts, cardiac structure, and morphology. They reduce radiation exposure and provide excellent image quality as well as accurate diagnoses. A popular 256-slice CT scanner is the Philips Brilliance iCT. 781b155fdc