The Innovation of Photon-Counting CT Could Be a New Era for CT Imaging CT scanners are an established tool for the diagnosis and monitoring of a wide range of health conditions as well as interventional and research use.1 CT scanners provide health care practitioners with detailed, cross-sectional views of the human body. [...] • Abdominal CT: Study authors reported significantly better or similar ratings for subjective and objective image quality of PCCT compared to EID CT images for abdominal scans.31,39-41,47,48 • Bone CT: When assessing bone CT, image quality and visualization of osseous structures for the PCCT scans scored higher than the EID CT scans for the temporal bone (Somatom Count Plus 1 study,55 NAEOTOM Alph. [...] One study reported mean effective radiation doses were similar for PCCT and EID CT for CT scans of the heart and thoracic aorta.45 In the second study, PCCT significantly reduced dose levels without a significant difference in image quality of chest PCCT scans compared with EID CT scans.46 Photon-Counting CT: High Resolution, Less Radiation 11 CADTH Horizon Scan Adults • Abdominal CT: Most studies. [...] • Chest CT: Compared to EID CT, study authors found PCCT systems could operate at lower radiation doses.22-26,42-44 For example, mean CT dose index was 2.0 times higher in EID CT scans of the chest compared with PCCT scans.44 In another study, PCCT afforded a reduction in contrast medium and radiation dose for the diagnosis of acute pulmonary embolism, while maintaining good to excellent image qua. [...] Compared to conventional CT, patients rated PCCT significantly better for the speed and comfort of the CT table and the ease of holding their breath during the scan.
- Pages
- 28
- Published in
- Canada
