Data will be collected 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 and scanned by Philips Spectral CT 7500.
Conditions
Interventions
Group A(120kVp, DRI=30):None intervention
GroupB(100kVp, DRI=24):None intervention
Sponsors
The First Affiliated Hospital of Zhengzhou University
Eligibility
Sex/Gender
All
Age
18 Years to 80 Years
Inclusion criteria
Inclusion criteria: 1.Datasets from patients who underwent spectral coronary CT angiography (CCTA). 2.Datasets from study participants with age = 18 years old. 3.Scan parameters that meet the criteria defined in the 5.4.3.
Exclusion criteria
Exclusion criteria: 1.The clinical data information is considered incomplete after evaluation by the investigator. 2.The investigator determined that poor image quality (e.g. obvious artifacts, missing critical scan layers) would not satisfy post-processing analysis. 3.Data of patients deemed inappropriate for inclusion after evaluation by the investigator.
Design outcomes
Primary
| Measure | Time frame |
|---|---|
| Objective image quality,;diagnosis confidence; | — |
Countries
China
Contacts
Public ContactJie Liu
The First Affiliated Hospital of Zhengzhou University
Outcome results
None listed