Photon Counting Detector CT Image Quality
This study aims to compare subjective image quality and diagnostic accuracy of a photon counting detector computed tomography (PCD-CT) scanner compared with an energy integrating detector (EID)-CT scanner as the reference standard.
- EligibilityCriteria: Inclusion Criteria:  Patient admitted for non-contrast enhanced CT scan of the upper or lower extremity at the radiology department of Balgrist University Hospital Signed general consent ("Information zur Weiterverwendung gesundheitsbezogener Daten und Proben zu Forschungszwecken") >18 years of age Written consent to participate in this study  Exclusion Criteria:  Clinically significant concomitant disease states (e.g., renal failure, hepatic dysfunction, cardiovascular disease, etc.) Women: pregnancy Age below 18 years Known or suspected non-compliance, drug or alcohol abuse Inability to consent and/or follow the procedures of the investigation, e.g. due to language problems, psychological disorders, dementia, etc. of the subject Enrolment of the PI, his/her family members, employees and other dependent persons Body mass above 200 kg. Body mass below 31 kg. - HealthyVolunteers: No - Gender: All - StdAgeList: Child, Adult, Older Adult