在常规/卧底和直立计算机断层扫描的健康参与者中,卧底和站立姿势之间的肺衰减梯度的差异
Fumiko Yagi1, Yoshitake Yamada2, Minoru Yamada1
1Department of Radiology, Keio University School of Medicine, 35 Shinanomachi, Shinjuku, Tokyo, 160-8582, Japan.
Scientific reports
|September 14, 2024
概括
重力显著影响肺部通风,改变卧卧和站立位置之间的衰减梯度. 躺着时看到的前后斜坡在站起来时消失,而出现的是尾斜坡.
科学领域:
- 肺部生理学 肺部生理学
- 放射学 放射学是指放射学
- 医疗成像医学成像
背景情况:
- 重力对肺部通风的影响在使用计算机断层扫描 (CT) 的仰卧和俯卧姿势上得到了充分证实.
- 然而,重力对站立姿势中的肺衰减梯度的影响,个人大部分时间都在站立,仍然不太了解.
研究的目的:
- 用CT来比较卧卧和站立姿势之间的肺衰减梯度.
- 调查这些梯度和参与者特征之间的相关性,包括肺功能测试结果.
主要方法:
- 100名健康参与者接受了传统的卧底和直立CT扫描.
- 肺衰减梯度被测量在前后后和尾方向.
- 评估了与年龄,性别,身高,体重,BMI和肺功能测试的相关性.
主要成果:
- 在多个肺水平 (p < 0.0001) 中,卧卧姿相比站立姿势,前后后方向的肺衰减梯度在卧卧姿中显著增加 (p < 0.0001).
- 尾肺衰减梯度在站立姿势中明显大于躺卧姿势 (p < 0.0001).
- 肺衰减梯度与参与者特征 (如年龄,性别,身高,体重,BMI或肺功能测试结果) 之间没有发现显著的相关性.
结论:
- 在仰卧姿势中观察到的前后肺衰减梯度在站立姿势中不存在.
- 由于重力,在站立姿势中出现一个尾肺衰减梯度.
- 这些发现凸显了身体位置对肺透气分布的重大影响.
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