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Patient dose in radiologically guided interventional vascular procedures: conventional versus digital systems
R Ruiz-Cruces1, M Pérez-Martínez, A Martín-Palanca
1Department of Radiology and Medical Physics, School of Medicine, University of Málaga, Spain.
Radiology
|November 14, 1997
Summary
Digital systems show higher patient radiation doses in vascular interventional radiology compared to conventional systems. Training and low-dose imaging are crucial for reducing radiation exposure during these procedures.
Area of Science:
- Medical Imaging
- Radiology
- Radiation Dosimetry
Background:
- Radiologically guided interventional vascular procedures are increasingly common.
- Assessing patient radiation dose is critical for safety.
- Digital imaging systems offer potential benefits but require dose evaluation.
Purpose of the Study:
- To compare patient radiation doses between conventional and digital systems in vascular interventional radiology.
- To estimate effective dose and energy imparted using digital systems.
Main Methods:
- Analysis of 318 procedures across 15 examination groups.
- Dose-area product (DAP) measurement using a transmission chamber.
- Effective dose estimation via specialized software.
Main Results:
- Digital systems showed higher dose-area product in vascular procedures compared to conventional systems in 13 of 15 groups.
- Urinary and biliary tract procedures had minimal dose differences.
- Effective doses ranged from 0.88 mSv to 25.7 mSv, with higher energy imparted in spermatic vein embolization.
Conclusions:
- Digital systems generally result in higher patient radiation doses in vascular interventional radiology.
- Personnel training and consistent use of conventional fluoroscopy and low-dose imaging are recommended to minimize patient dose.