CT equipment and performance issues: radiation protection 162.

Area of Science:

• Medical Imaging Technology
• Radiological Physics

Background:

• Computed Tomography (CT) scanners have evolved since the 1970s with technological advancements.
• These advancements include faster processing, better detectors, and helical/multi-detector scanning modes.
• CT examinations are among the highest radiation dose procedures in medical imaging.

Purpose of the Study:

• To address the evolving landscape of CT scanner technology and its implications for radiation dose.
• To evaluate the current criteria for CT scanner acceptability, focusing on both qualitative and quantitative aspects.
• To consider specific challenges posed by modern CT systems, such as multi-slice and wide-beam configurations.

Main Methods:

• Review of technical advancements in CT scanner technology.
• Analysis of existing qualitative and quantitative criteria for CT scanner acceptability (e.g., RP 162).
• Consideration of hardware, software, operator, and protocol selection aspects.

Main Results:

• CT technology improvements have expanded clinical applications while enhancing image quality and dose efficiency.
• Despite improvements, CT procedures continue to involve significant radiation doses.
• Current criteria address functional, operational, and hardware aspects, with some consideration for software and protocols.

Conclusions:

• Ongoing technological evolution in CT scanning requires continuous updates to safety and performance standards.
• Balancing image quality improvements with radiation dose reduction remains a critical challenge.
• Modern CT systems, particularly multi-slice and wide-beam scanners, present unique challenges that need specific attention in regulatory and operational guidelines.