Figure 1 b shows reconstructed images from the 128-slice DSCT and 320-row ADCT scanners. The impulse signal of the respective acquisition modes (SHM and DHM) for the 128-slice DSCT appeared as one- and two-streak responses. On the other hand, the 320-row ADCT image appeared as only a one-streak response in the respective reconstructed CT image. Phantom Testing: CT (Revised 11-9-2022) The Gammex 464 phantom can be scanned either by a technologist or medical physicist. If performed by a technologist, it is strongly recommended that a physicist check all images and data forms before submission. A medical physicist must perform the dosimetry scans. The dosimetry scans can be done on a The minimal technical requirements for TAVI CT are the following 2: 64-slice scanner. detector element width ≤0.625 mm. option of cardiac CT and ECG-gated triggering. Patient preparation. patients should take their cardiac medications as usual. no food 3-4 hours before the scan. no caffeine for 12 hours. instructions on how to breathe Technical developments in multidetector computed tomography (CT) have increased the number of detector rows on the z-axis, and 16-cm wide-area-coverage CT scanners have enabled volumetric scanning of the entire heart. Beyond coronary arterial imaging, such innovations offer several advantages during clinical imaging in the cardiothoracic area. For the multislice helical CT system we tested, the measured radiation doses for all slice combinations were essentially the same, regardless of the pitch. At a slice collimation of 4 × 2.5 mm, for example, the absorbed dose measurements for pitches 2, 4, and 8 were 9.92 ± 0.09, 9.94 ± 0.15, and 10.12 ± 0.18 mGy, respectively. CT scans produce 2-dimensional images of a “slice” or section of the body, but the data can also be used to construct 3-dimensional images. A CT scan can be compared to looking at one slice of The Supria is a multi-slice computed tomography system designed to perform multi-slice CT scanning supported by 16-detector technology. The system allows optimum clinical applications ranging from routine exams in response to the diversified circumstances in imaging whole body regions. Scientific Concepts Brain (venogram) Carotid/Brain. Face/Orbits/Sinus. Pituitary Gland. Stereotactic Gamma Knife. Surgical 3D Head. Temporal Bones. Viewing Wand. Find protocols for performing Head CT scans at Rhode Island Hospital, also welcoming Massachusetts patients. nuHwizt.