文档介绍：浙江大学硕士学位论文
Evaluation of nutcracker syndrome with contrast-enhance ic
resoflauce angiography(CE-MRA) ABSTRACT
Objeetive:To assess diagnosis of nutcracker syndrome with contrast-enhanced ic resonance angiography.
Methods:We studied 3 1 patients ofnutcracker syndrome and 36 volunteers as control by contrast-enhanced 3D ic resonance angiography(MRA). We measured the angle(a)ofthe origin ofthe superior mesenteric artery(SMA)from the abdominal aorta(AO),and the distance(a)ofthe origin ofthe SMA before it began a caudal descent in the sagittal plane that crossed the AO and SMA,the distance(b)between the SMA and aorta in the axial plane crossing the left renal vein(LRV),and we measured the
supero-inferior diameter(c)ofLRV left lateral to the aorta,and we also
measured the macroaxis(d)ofthe left renal.
Results:There were 2 posterior-nutcracker syndrome,in which the LRV crossed into IVC behind anterior-nutcracker syndrome,the
angle ofthe origin ofthe superior mesenteric artery(SMA)from the abdominal aorta(AO),the distance between the SMA and aorta in the axial plane crossing the left renal vein(LRV)and the supero—inferior diameter of
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浙江大学硕士学位论文
LRV left lateral to the aorta were 。,, in patients,and 。,,1 in control group, all ofthese found the three value had the significantly difference between patients group and control group but not
SO as the distance ofthe origin ofthe SMA before it began a caudal descent and the macroaxis ofthe left there is an overlap ofthe supero· inferior diameter ofLRV between two set the cutoffvalue ofthe angle of SMA and AO(o【)<45。and the distance between SMA and AO(b)
< found the senskivity and specificity is %and 1 00% respectively.
Conclusion:MRI is good at diagnosing the nutcracker syndrome,and it is a
I
noninvasive in multiple-plane paring with
measure the angle and distance