Panoramic ultrasound (US) is an extended field‐of‐view (EFOV) imaging technique that enables visualization of large‐scale skeletal muscles. This technique has previously been found to produce valid and reliable quantifications of muscle morphology in primarily young male subjects. The purpose was to investigate the intra‐rater between‐session test–retest reliability of panoramic US imaging for determining vastus lateralis (VL) and rectus femoris (RF) cross‐sectional area (mCSA) in healthy middle‐aged to elderly adults. In this cross‐sectional study, axial panoramic US images of the RF and VL muscles were captured in 23 healthy females and males aged 47 to 78. Assessed across two sessions 3–7 days apart, intra‐rater reliability was evaluated by intraclass correlation coefficients (ICC3,2), within‐subject coefficient of variation , standard error of measurement (SEM), and minimal detectable change (MDC). Mean mCSA for RF was mean ± SD, 7.5 ± 2.7 cm2 on both test days, with a numeric difference of 0.8%. Mean VL mCSA was 20.6 ± 6.6 cm2 and 20.5 ± 6.5 cm2 on test days 1 and 2, respectively. Test–retest ICC were: 0.997 (95% CI: 0.994–0.999) for RF and 0.995 (95% CI: 0.989–0.998) for VL. was 2.6% for RF and 2.4% for VL. SEM was 0.2 cm2 for RF and 0.5 cm2 for VL. MDC was 0.4 cm2 for RF and 1.3 cm2 for VL. In conclusion, panoramic EFOV US is a highly reliable imaging technique for assessing RF and VL mCSA in middle‐aged and elderly adults. These findings endorse the clinical and research utility of EFOV US and its sensitivity for detecting even minor changes in skeletal muscle size.

中文翻译：

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全景超声成像测定中老年人股四头肌横截面积的评估者内可靠性


全景超声 （US） 是一种扩展视野 （EFOV） 成像技术，可实现大规模骨骼肌的可视化。以前已经发现这种技术可以在主要是年轻男性受试者中产生有效和可靠的肌肉形态定量。目的是研究全景超声成像在确定健康中老年人股外侧肌 （VL） 和股直肌 （RF） 横截面积 （mCSA） 的评分者内部会话间测重测信度。在这项横断面研究中，在 23 名年龄在 47 至 78 岁的健康女性和男性中捕获了 RF 和 VL 肌肉的轴向全景超声图像。在相隔 3-7 天的两次会话中进行评估，通过类内相关系数 （ICC3,2）、受试者内变异系数、测量标准误差 （SEM） 和最小可检测变化 （MDC） 评估评分者内可靠性。RF 的平均 mCSA ± SD 均值，两个测试日分别为 7.5 ± 2.7 cm2，数值差异为 0.8%。测试第 1 天和第 2 天的平均 VL mCSA 分别为 20.6 ± 6.6 cm2 和 20.5 ± 6.5 cm2。重测 ICC 为：RF 为 0.997 （95% CI： 0.994–0.999），VL 为 0.995 （95% CI： 0.989–0.998）。RF 为 2.6%，VL 为 2.4%。RF 的 SEM 为 0.2 cm2，VL 为 0.5 cm2。RF 的 MDC 为 0.4 cm2，VL 为 1.3 cm2。总之，全景 EFOV US 是一种高度可靠的成像技术，用于评估中老年人的 RF 和 VL mCSA。这些发现支持 EFOV US 的临床和研究效用及其对检测骨骼肌大小的微小变化的敏感性。