Diffusion-weighted imaging and the skeletal system: a literature review

Area of Science:

• Radiology
• Musculoskeletal Imaging
• Biomedical Engineering

Background:

• Diffusion-weighted imaging (DWI) is an MRI technique leveraging water molecule diffusion for tissue contrast.
• Traditionally used in neuroimaging, DWI's application is expanding to skeletal system assessment.
• Understanding water diffusion patterns is key to DWI's diagnostic capabilities in bone diseases.

Purpose of the Study:

• To review recent advancements in using DWI for skeletal system imaging.
• To clarify the role and limitations of DWI in evaluating various osseous diseases.
• To highlight DWI's potential in diagnosing and monitoring bone conditions.

Main Methods:

• Literature review of recent studies on DWI in musculoskeletal imaging.
• Analysis of DWI's utility in assessing skeletal tumors, treatment response, and specific conditions.
• Evaluation of DWI's limitations in differentiating bone lesions and fractures.

Main Results:

• DWI demonstrates utility in assessing skeletal tumor burden and monitoring chemotherapy response.
• It aids in detecting hip ischemia in Legg-Calvé-Perthes disease and evaluating cartilage repair.
• Limitations include difficulty differentiating chondrosarcomas from benign lesions and malignant from osteoporotic fractures.

Conclusions:

• DWI is a valuable tool with growing applications in musculoskeletal imaging.
• Further research is needed to overcome current limitations and expand its clinical use in bone disorders.
• DWI offers a promising non-invasive method for diagnosing and monitoring a range of skeletal conditions.