Talasz Helena, Kremser Christian, Kofler Markus, Kalchschmid Elisabeth, Lechleitner Monika, Rudisch Ansgar
Department of Internal Medicine, Hochzirl Hospital, 6170 Zirl, Austria.
Int Urogynecol J. 2011 Jan;22(1):61-8. doi: 10.1007/s00192-010-1240-z. Epub 2010 Aug 31.
the aim of this pilot study was to demonstrate physiological movements of the muscular walls surrounding the abdominal cavity during breathing and coughing in healthy nulliparous women by means of real-time dynamic magnetic resonance imaging (MRI).
eight volunteers underwent MRI measurements in a 1.5-T whole body MR-scanner. Coronal and sagittal slices were acquired simultaneously to assess respiratory-related cranio-caudal movement of diaphragm and pelvic floor (PF) and concomitant changes in horizontal abdominal diameter.
respective mean amplitudes of cranio-caudal movement of the right and left diaphragmatic cupolae were 15 ± 6 and 9 ± 7 mm during quiet breathing; 32 ± 15 and 28 ± 16 mm during forceful breathing; and 32 ± 13 and 28 ± 7 mm during coughing. Both diaphragm and PF moved caudally during inspiration and cranially during expiration. Abdominal diameter decreased in all eight women consistently during the expiration phase of breathing, and in five women during coughing.
in healthy women, real-time dynamic MRI demonstrates parallel cranio-caudal movement of the diaphragm and the PF during breathing and coughing and synchronous changes in abdominal wall diameter.
本初步研究的目的是通过实时动态磁共振成像（MRI）来展示健康未生育女性在呼吸和咳嗽时腹腔周围肌肉壁的生理运动。
8名志愿者在1.5-T全身MR扫描仪中进行MRI测量。同时采集冠状面和矢状面切片，以评估膈肌和盆底（PF）与呼吸相关的头-尾向运动以及腹部水平直径的伴随变化。
安静呼吸时，左右膈肌穹窿头-尾向运动的各自平均幅度分别为15±6和9±7毫米；用力呼吸时为32±15和28±16毫米；咳嗽时为32±13和28±7毫米。吸气时膈肌和盆底均向尾侧移动，呼气时向头侧移动。在呼吸的呼气阶段，所有8名女性的腹部直径均持续减小，咳嗽时5名女性的腹部直径减小。
在健康女性中，实时动态MRI显示呼吸和咳嗽时膈肌与盆底的头-尾向平行运动以及腹壁直径的同步变化。
