EuroSafe Imaging 2020
Performed at one institution, Observational, Prospective, Dosimetric comparison, Radiation safety, Dosimetry, Comparative studies, Image manipulation / Reconstruction, CT-Angiography, Radioprotection / Radiation dose, Cardiac, Action 4 - Dose management systems
F. EL HEDHILI, W. Frikha, S. Boukriba, A. grich, Y. ben abdeladhim, H. Mizouni
Coronary pathology is a frequent pathology presenting many complications which can be life-threatening. Coronary angiography is considered as the gold standard for exploring coronary arteries. But it is an expansive and invasive technique .
Coronary computed tomographic (CT) angiography performed with multi-detector row CT is an accurate method for noninvasive detection of coronary artery disease .
It's usually performed with retrospectively gated technique Fig. 1 who has proved to be accurate but reponsable of high effective radiation dose [2, 3].
In 2006, prospectively gated transverse coronary CT angiography Fig. 2 was introduced.
- Step and shot transverse acquisition.
- Increamentally moving table.
- Adaptive ECG triggering.
- Multiphase reconstruction capability.
The purpose of our study was to compare image quality and radiation dose for coronary CT angiography obtained with prospectively and retrospectively gated techniques.