Evaluation of Sonographic Muscle Measurement Using Established Muscle Markers

Area of Science:

• Musculoskeletal imaging
• Diagnostic sonography
• Geriatric medicine

Background:

• Muscle loss (sarcopenia) is linked to frailty and decreased quality of life.
• Accurate muscle mass quantification is crucial for diagnosis and management.
• Sonography presents a non-invasive, accessible tool for muscle assessment.

Purpose of the Study:

• To prospectively evaluate sonographic measurements of muscle.
• To compare sonographic muscle indices with established methods (CT, hand grip strength).
• To assess the reliability and reproducibility of sonographic morphometry.

Main Methods:

• 723 patients enrolled; sonographic indices (psoas, thigh muscle) measured.
• Comparison with computed tomography (CT) for muscle area and hand grip strength for function.
• Inter- and intra-observer reliability analyzed for sonographic measurements.

Main Results:

• Sonographic indices showed good reliability, with femur indices outperforming psoas indices.
• Psoas muscle indices demonstrated the strongest correlation with skeletal muscle index (SMI).
• Optimal cut-off values were determined for identifying muscle loss using sonography.

Conclusions:

• Sonography provides a simplified approach to muscle measurement.
• Sonographic muscle indices are valuable for evaluating patients with wasting disorders.
• This method holds potential for routine diagnostic workup, especially in at-risk populations.