pQCT

pQCT quantifies inter- and intramuscular fat at specific anatomical sites, notably the distal diaphyseal femur, to evaluate muscle quality.

Key Features:

• Anatomical targeting: Focuses on the distal diaphyseal femur located at 25% of tibial length from the knee joint towards the hip.
• Inter- and intramuscular fat quantification: Identifies and assesses the distribution and density of intermuscular and intramuscular fat at specified sites.
• Comparative site sensitivity: Targets a region with higher concentrations of inter- and intramuscular fat compared with traditional pQCT sites such as the forearm or lower leg.
• Automated analysis algorithm: Automates analysis using an open-source enclosing convex polygon approach to reduce the need for manual segmentation.

Scientific Applications:

• Muscle quality assessment: Evaluates "muscle quality" as an indicator of muscle health and function by quantifying fat infiltration within muscle compartments.
• Population and developmental studies: Provides site-specific insights into inter- and intramuscular fat distribution in healthy individuals, including adolescents.

Methodology:

Automated analysis is performed using an open-source enclosing convex polygon approach to reduce manual segmentation.