Single‐slice transverse CT images at L1 and L3 were determined to quantify skeletal muscle mass and quality.
18 (link) CT scanners from General Electric (GE) (128‐slice spiral CT scanners from GE discovery CT, 128‐slice spiral CT scanners from GE optima CT660, and 256‐slice spiral CT scanners from GE revolution CT) and Siemens (64‐slice spiral CT scanners from SOMATOM sensation CT, SOMATOM definition flash CT, and SOMATOM definition AS CT, and 96‐slice spiral CT scanners from SOMATOM force CT) were used. Image analysis was conducted with ImageJ (version 1.46).
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The value of HU represents the radiodensity. Tissues were measured by using a threshold for HU of −29 to +150 for skeletal muscle
20 (link) (FigureS1 ). The mean radiodensity of the whole muscle area at the L1 and L3 cross‐sectional areas was selected for analysis of SMD (indicator used to quantify skeletal muscle quality, HU). SMI (cm2/m2) was represented by the skeletal muscle area corrected by body height squared.
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18 (link) CT scanners from General Electric (GE) (128‐slice spiral CT scanners from GE discovery CT, 128‐slice spiral CT scanners from GE optima CT660, and 256‐slice spiral CT scanners from GE revolution CT) and Siemens (64‐slice spiral CT scanners from SOMATOM sensation CT, SOMATOM definition flash CT, and SOMATOM definition AS CT, and 96‐slice spiral CT scanners from SOMATOM force CT) were used. Image analysis was conducted with ImageJ (version 1.46).
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The value of HU represents the radiodensity. Tissues were measured by using a threshold for HU of −29 to +150 for skeletal muscle
20 (link) (Figure
21 (link)
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