NAEOTOM Connect - The photon-counting CT excellence community for NAEOTOM Alpha class systems by Siemens Healthineers. The modern way of radiology.
In this feasibility study, an ultra-low-dose pediatric chest PCCT protocol was optimized to Sn100 kVp, 2 mAs, pitch 1.5, achieving a phantom effective dose of 14 µSv. In clinical use, the median total effective dose was 11.6 µSv, close to the 8.2 µSv median dose of a single chest radiograph. The protocol was applied in 24…
In 27 adults with suspected respiratory infection, an ultra-low-dose PCCT chest protocol achieved a mean effective dose of 0.11 ± 0.04 mSv, essentially matching the German reference dose for a two-view chest radiograph. Despite this very low exposure, PCCT provided substantially more diagnostic information than…
Retrospective single-center study of 507 patients undergoing unenhanced abdominal CT for suspected urinary calculi, comparing PCCT (n = 229) with optimized EID-CT (n = 278). PCCT achieved a 44% lower effective radiation dose than EID-CT: 0.79 mSv vs 1.39 mSv, while maintaining excellent diagnostic confidence. Despite the…
Automated Lung Texture Analysis (LTA) performed robustly on low-dose PCCT despite the algorithm having been trained on conventional EID-CT data. For detecting ILD, LTA achieved a higher AUC with PCCT than with EID-CT (0.846 vs. 0.772). PCCT showed consistently higher AUCs for individual ILD features, particularly…
Combining 120 keV virtual monoenergetic imaging (VMI120) with iterative metal artifact reduction (iMAR) achieved the strongest reduction of metal artifacts after anterior cervical discectomy and fusion (ACDF), particularly around titanium implants. Despite superior artifact suppression, standard polychromatic PCCT images…
Use tin-prefiltered PCCT to reduce lumbar spine dose while preserving subjective image quality. The authors found markedly lower dose with PCCT, while overall subjective image quality remained unchanged versus tin-filtered EID-CT. Expect higher bone-to-fat contrast efficiency with PCCT. Compared with EID-CT, PCCT showed…
Lowering the PCCT image quality level from 70 to 50 reduced radiation dose significantly, with SSDE decreasing by 22.8%, without materially compromising image quality. Stone detection remained high across protocols, with detection rates of 91.3% to 100%, while diagnostic confidence stayed consistently high and unaffected…
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