Directional vector visualization of scattered rays in mobile c-arm fluoroscopy

Area of Science:

• Medical Physics
• Radiological Sciences
• Radiation Biology

Background:

• Medical staff performing X-ray fluoroscopy require effective radiation protection measures.
• Previous studies relied on simulations for protective plate effectiveness, lacking directional insights.
• Understanding scattered ray behavior is crucial for optimizing radiation shielding.

Purpose of the Study:

• To propose and validate a method for visualizing the directional vectors of scattered X-rays.
• To assess the effectiveness of protective plates in reducing radiation exposure to physicians.
• To enhance understanding of scattered ray propagation for improved radiation safety protocols.

Main Methods:

• Utilized Monte Carlo simulations with a particle and heavy-ion transport code system.
• Reproduced a C-arm X-ray fluoroscopy system to simulate scattered ray behavior.
• Visualized scattered photon vectors in 3D and mapped dose distributions around a physician model.

Main Results:

• Confirmed simulation accuracy by comparing measured and calculated ambient dose equivalents (within 10% agreement).
• Visualized scattered ray vectors demonstrating significant backscatter radiation from the phantom.
• Showed that a protective plate significantly enhanced shielding, reducing physician radiation exposure.

Conclusions:

• The visualization of directional scattered ray vectors provides crucial insights into radiation exposure pathways.
• This method elucidates the optimal positioning and use of radiation protection plates.
• The findings contribute to enhanced radiation safety for medical professionals during fluoroscopic procedures.