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Effective dose to the patient undergoing superior vena cava stent
D O'Driscoll1, E A McNeil, J Ferrando
1Department of Radiology, Heartland's Hospital, Birmingham, UK.
The British Journal of Radiology
|May 13, 1999
Summary
This study analyzed radiation dose data from metallic stent placements for superior vena cava (SVC) obstruction. The average effective dose was 5.8 mSv, with fluoroscopy contributing significantly to the overall dose-area product.
Area of Science:
- Interventional Radiology
- Medical Physics
- Cardiovascular Imaging
Background:
- Superior vena cava (SVC) obstruction is a serious condition often treated with metallic stents.
- Accurate assessment of radiation exposure is crucial for patient safety during interventional procedures.
Purpose of the Study:
- To retrospectively analyze the radiation dose data associated with metallic stent placement for SVC obstruction.
- To quantify the dose-area product (DAP) and effective dose from these procedures.
Main Methods:
- Retrospective analysis of dose data from 44 patients undergoing SVC stent placement.
- Utilized digital radiography units to record fluoroscopic and radiographic components of radiation dose.
- Calculated mean DAP and estimated effective dose.
Main Results:
- The mean DAP was 42 Gy cm2, with an estimated effective dose of 5.8 mSv.
- Fluoroscopy accounted for approximately 80% of the total radiation dose.
- The mean screening time was 17 minutes, with an average of 86 digital exposures.
Conclusions:
- Metallic stent placement for SVC obstruction involves a significant radiation dose, primarily from fluoroscopy.
- These findings highlight the importance of radiation dose monitoring and optimization in interventional cardiology procedures.