Cone-beam computed tomography imaging: therapeutic staff dose during chemoembolisation procedure

Area of Science:

• Medical Imaging
• Radiation Oncology
• Radiological Physics

Background:

• Cone-beam computed tomography (CBCT) is crucial for real-time image-guided interventions.
• Transarterial chemoembolization (TACE) is a common oncological procedure requiring accurate guidance.

Purpose of the Study:

• To estimate personal dose equivalent (PDE) and annual personal dose (APD) for medical staff during CBCT imaging in TACE procedures.
• To evaluate radiation safety compliance with international guidelines.

Main Methods:

• Dosimetry measurements using thermo-luminescent dosimeters on therapeutic and assistant physicians.
• Analysis of absorbed doses from 200 CBCT examinations during hepatic TACE.
• Calculation of PDE and APD based on International Atomic Energy Agency (IAEA) protocols.

Main Results:

• Annual personal doses for therapeutic physicians (5.6 mSv) and assistant physicians (5.08 mSv) were within ICRP-103 limits.
• Hands received the highest personal dose equivalent (e.g., therapeutic physician: 56-72 mSv).
• Doses to eyes and hands were below prescribed limits, and assistant physician doses were lower than the therapeutic physician's.

Conclusions:

• CBCT imaging during TACE is safe for therapeutic staff regarding annual radiation exposure.
• Radiation doses are within International Commission on Radiological Protection (ICRP) recommended limits.
• Monitoring and adherence to protocols ensure staff safety during image-guided procedures.