Physician and patient exposure during cardiac catheterization

Area of Science:

• Medical Physics
• Radiology
• Cardiology

Background:

• Cardiac catheterization procedures involve radiation exposure for both patients and medical staff.
• Accurate estimation of radiation doses is crucial for radiation protection protocols.

Purpose of the Study:

• To determine anticipated radiation exposure ranges for physicians and patients during cardiac catheterization.
• To present a novel technique for calculating radiation exposure using time-lapse photography and a computer model.

Main Methods:

• Literature survey to establish expected exposure ranges.
• Development of a technique utilizing time-lapse photography and a computer model for exposure calculation.
• Validation of the developed technique using thermoluminescent dosimeter (TLD) measurements.

Main Results:

• Physician eye exposure measured at approximately 20 mR per procedure, indicating a potential weekly limit of five procedures.
• Average patient skin entrance exposure recorded at 28 R.
• Average gonadal exposure for patients measured at 12 mR.

Conclusions:

• The developed technique provides reliable estimates for radiation exposure during cardiac catheterization.
• Physician exposure levels necessitate careful management and adherence to procedural limits.
• Patient radiation doses, while significant, are considered acceptable given the diagnostic and therapeutic benefits of cardiac catheterization.