Objective: To explore the value of increased fetal cardio thoracic ratio (CTR) in predicting adverse fetal pregnancy out......

目的：通过对螺旋C T与X线心胸比值测量对照研究，探讨螺旋C T在心胸比值的临床运用价值，是临床检查中另一手段。方法：对300例螺旋C T及X......