This is a single-center, comparative, observational, retrospective data study. Datasets from patients who underwent spectral coronary CT angiography (CCTA) for suspected coronary artery disease (CAD) or other diagnosis needs as part of their routine clinical evaluation will be included.
Eligible dataset will be selected from the existing CT scan datasets generated at the study site, based on the CT scanning parameters, enrolled study participant datasets will be divided into Group A (120kVp, DRI=30) and Group B (100kVp, DRI=24). One hundred cases are planned to be enrolled in each group, with a total target of 200 datasets to be collected.
Study Type
OBSERVATIONAL
Enrollment
200
This is an observational study
This is an observational study
Zhengzhou Universtidy 1st Affiliated Hospital
Zhengzhou, Henan, China
Subjective Image quality using 5 Liket-scale (1-5)
The subjective image quality will be assessed by 2 radiologists using Liket-scale on a range from 1(poor) to 5(Excellent).
Time frame: From date of image reconstruction until the date of image reading completion, anticipated 3Months.
Objective image quality
The objective image quality will be evaluated by measuring the CT value shown in the image.
Time frame: From the date of image reconstruction completion to the date of image reading completion, anticipated up to 3 months
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