CT dose optimisation and reduction in osteoarticular disease

Area of Science:

• Radiology
• Medical Imaging
• Orthopedics

Background:

• Computed tomography (CT) is crucial for diagnosing osteoarticular diseases.
• Advancements in CT technology, including dynamic CT and CT bone perfusion, expand its diagnostic capabilities.
• Radiation exposure remains a significant concern in CT imaging.

Purpose of the Study:

• To present typical radiation doses in osteoarticular CT examinations.
• To discuss methods for optimizing and reducing radiation doses in CT.
• To explore dose reduction strategies for specific musculoskeletal CT applications.

Main Methods:

• Review of typical radiation doses delivered during CT for osteoarticular diseases.
• Analysis of behavioral and technical factors influencing radiation dose.
• Evaluation of dose optimization techniques, including milliamps, kilovoltage, and iterative reconstruction.
• Discussion of specific applications: dynamic CT, CT bone perfusion, and dual-energy CT.

Main Results:

• Iterative reconstruction techniques can reduce CT radiation dose by up to 50% without compromising image quality.
• Optimized technical parameters (mA, kV) and iterative reconstruction enable low-dose or ultra-low-dose CT acquisitions.
• Behavioral factors, such as adherence to examination indications, remain critical for dose reduction.
• Specific protocols for dynamic CT, CT bone perfusion, and dual-energy CT can achieve dose optimization.

Conclusions:

• Significant radiation dose reduction in osteoarticular CT is achievable through technical advancements like iterative reconstruction.
• Combining technical optimizations with appropriate clinical indications is essential for safe and effective CT imaging.
• Low-dose CT techniques can achieve radiation levels comparable to standard X-ray examinations while maintaining diagnostic image quality.