Functional imaging of the musculoskeletal system

Area of Science:

• Biomedical imaging
• Musculoskeletal system research
• Functional tissue analysis

Background:

• Functional imaging is established in neuro/cardiac fields but less so in musculoskeletal (MSK) imaging.
• MSK tissues like ligaments and bone are primarily structural, unlike organs with high functional capacity.
• Bone marrow, muscle, and nerve are key functionally responsive MSK tissues.

Purpose of the Study:

• To review the application and impact of functional magnetic resonance (MR) imaging techniques in the musculoskeletal system.
• To highlight the research-oriented advancements in understanding MSK tissue physiology and function.
• To discuss the future clinical potential of functional MR imaging in bridging structural-symptom disconnects.

Main Methods:

• Proton or phosphorus spectroscopy
• Fat quantification techniques
• Perfusion imaging, BOLD imaging, diffusion, and diffusion tensor imaging (DTI)

Main Results:

• Functional MR techniques have significantly advanced the understanding of marrow, muscle, and neural physiology.
• These methods are primarily research-based but show substantial promise for clinical application.
• Enhanced comprehension of disease processes and earlier disease recognition are key outcomes.

Conclusions:

• Functional MR imaging is crucial for understanding MSK tissue function beyond structural assessment.
• Future clinical impact includes improved prognostic prediction and optimized treatment monitoring.
• These techniques will bridge the gap between imaging findings and clinical presentation in MSK conditions.