Related Experiment Videos
Effective dose to a patient undergoing coronary angiography
H Lobotessi1, A Karoussou, V Neofotistou
1Athens University, Medical Physics Department, Medical School, 75 Mikras Asias Str., 115 27 Goudi, Greece.
Radiation Protection Dosimetry
|August 8, 2001
Summary
Patient radiation dose during coronary angiography varies significantly. This study measured dose-area product (DAP) and effective doses in 18 patients, providing data for optimizing radiation safety in cardiac procedures.
Area of Science:
- Radiology
- Medical Physics
- Cardiology
Background:
- Coronary angiography involves significant patient radiation exposure.
- Accurate dosimetry is crucial for radiation protection in interventional cardiology.
- Variability in patient dose necessitates detailed data collection.
Purpose of the Study:
- To quantify patient radiation dose during coronary angiography.
- To analyze factors influencing radiation dose, including patient size and procedure complexity.
- To compare effective dose estimations using different calculation methods.
Main Methods:
- Acquired detailed patient dose data for 18 coronary angiography patients.
- Recorded dose-area product (DAP), kV, and beam collimation for each projection.
- Calculated patient effective doses using two distinct methodologies.
Main Results:
- Mean DAP was 58 Gy.cm², median 56 Gy.cm² (range 26–125 Gy.cm²).
- Fluoroscopy time ranged from 3 to 37 minutes; cine frames from 1013 to 2344.
- Dose variations correlated with patient size, protocol, and procedural complexity.
Conclusions:
- Patient radiation doses in coronary angiography exhibit considerable variability.
- The findings provide essential data for radiation dose management in cardiac procedures.
- Discrepancies in effective dose estimation highlight the need for standardized calculation methods.