Figure 1.

Teleguided self-ultrasound scanning of muscle thickness in spaceflight

(A) Schematic of upper leg muscles and ultrasound image of RF and VL muscle thickness.

(B) Schematic of lower leg muscles and ultrasound image of GM and GL muscle thickness.

(C) Time course of change in muscle thickness before, during, and after spaceflight.

(D) Pre-flight to post-flight percentage change in muscle size from MRI and ultrasound images.

See also Figures S1A–S1D.

Abbreviations are as follows: FD, flight day; MRI, magnetic resonance imaging; US, ultrasound; RF, rectus femoris; VM, vastus medialis; VL, vastus lateralis; GM, gastrocnemius medialis; GL, gastrocnemius lateralis.