The extra doses delivered to adjacent organs other than the brain during brain CT examinations using a 128-slice CT scanner should be evaluated. An Alderson-Rando anthropomorphic phantom (Radiology Support Devices, Long Beach, British Columbia, Canada) was used to assess exposure to radiation. The 128-slice dual-source CT (DSCT) has ~2 vertical tube detector systems, a rotation time of up to 280 msec and a table-moving speed of up to 45.8 cm/sec. These physical characteristics can significantly reduce the radiation dose and the amount of contrast agent required ( 8 , 9 ). The Siemens Definition DS 128 offers more definition of detail, resolution, and clinical information. Siemens z-Sharp tube technology uses a flying focal spot to create two x-ray beams simultaneously hitting a 32-row detector, effectively producing 64-slice scans. The Definition DS is one of the quickest 64-slice systems available along with temporal resolution of 83 msec […] 3. Go to the image at scan location S80 in the Series 1, Helical scans. 4. Select Measure in the tools and select a circular ROI. Increase the size of the ROI to about 1000 mm2, keeping it circular and in the center of the phantom image. 5. Record both the Mean CT Number and the standard deviation from the ROI into the QA data sheet. the CT scan. A computed tomography scan (usually abbreviated to CT scan; formerly called computed axial tomography scan or CAT scan) is a medical imaging technique used to obtain detailed internal images of the body. [2] The personnel that perform CT scans are called radiographers or radiology technologists. Used SIEMENS Definition AS 128 CT Scanner For Sale - DOTmed Listing #4787046: Siemens Definition AS 128 Slice CT System Specs: DOM 2013 SOMATOM Definition AS syngo CT VB20 VB10B VR10C_SP6_20220112 First installation of 128 slice CT scanner in Surat. Improved patient safety with innovative low radiation dose features. Improved patient comfort with faster scans, reduced breath hold and Moodlight. Allows routine imaging and advanced clinical applications for Trauma, Cardiac and Neurovascular. A CT scan is an X-ray study that uses a computer to produce 3D cross-sectional images of the body. The CT scanner obtains detailed pictures of internal organs, bones and soft tissues—and differs from a medical X-ray image in that it uses a doughnut-shaped machine to emit X-ray beams at different angles. Multi-slice CT differs from ultrafast CT in that the latter has no moving parts, and ultrafast CT scans are faster than with multi-slice CT. One study examined the accuracy of spiral CT in evaluating coronary calcification, using ultrafast CT as the gold standard for comparison, in 33 asymptomatic individuals who were referred for calcium scans. Effective doses by ICRP 60 in paediatric chest CT and paediatric abdominopelvic CT scans with 64-slice CT scanners were 2.1–6.2 mSv and 3.3–8.9 mSv, respectively, which were similar to the values for 4-, 8- and 16-slice CT scanners [5, 8, 20] because of the same level of effective mAs used in paediatric CT scans with these scanners. The UtSLxJh.