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 40 patients (20 PCCT vs 20 BMI- and sex-matched EID-CT), PCCT successfully provided the high-resolution datasets required for virtual bronchoscopic navigation (VBN) and could be transferred into the navigation system for procedural planning. PCCT achieved an approximately 5–6× radiation-dose reduction: CTDIvol 1.5 vs…
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…
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…
This proof-of-concept study demonstrates that spectral PCCT data from routine contrast-enhanced oncologic staging examinations can be used to detect and quantify anemia by measuring blood-pool attenuation on virtual non-contrast (VNC) images. Mean blood-pool VNC attenuation showed a strong positive correlation with…
Photon-counting CT reduced radiation dose by 32% compared with energy-integrating detector CT while significantly improving contrast-to-noise ratio across the coronary, pulmonary, and aortic vascular territories. PCCT achieved pulmonary artery contrast-to-noise ratios with 75 mL contrast equivalent to EID-CT using 98.5 mL,…
The authors found strong agreement between PCCT-derived PBV maps and V/Q-SPECT for whole-lung and lobar perfusion, supporting PCCT as a feasible quantitative perfusion tool in CTEPH work-up. Best-practice implication: PCCT may enable combined assessment of pulmonary perfusion, vasculature, and parenchyma in one…
PCCT reduced iodine load by 26.7% and CTDIvol by 24.4% compared to highly individualized EID-CT protocols, confirming real-world dose efficiency even against optimized reference standards. Diagnostic image quality (IQ) remained equivalent, with no significant differences in attenuation or SNR and only a minor, clinically…
Engage with the community
