Methods The distance between skin and gluteus maximus of 524 cases were measured by B-mode ultrasonic.

 
  • 方法以臀大肌注射為研究對象,通過(guò)B超觀(guān)察524例皮膚到臀大肌之間的距離,以確定針頭進(jìn)入的深度。
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