Calder S J, McCaskie A W, Belton I P, Finlay D B, Harper W M
University of Leicester, England.
J Bone Joint Surg Br. 1995 Jul;77(4):637-9.
We performed single-photon-emission CT (SPECT) and planar bone scans to assess femoral head vascularity in ten patients with displaced intracapsular hip fracture. The heads were labelled with tetracycline and after excision at hemiarthroplasty were assessed for tetracycline uptake distribution by fluorescence under UV light. The four which had the greatest tetracycline uptake were normal on SPECT and planar imaging. In two cases the planar bone scans were normal although SPECT suggested avascularity thus giving false-negative results. Surgeons should be aware of this; SPECT may prove to be a more accurate method of assessing vascularity of the femoral head in fractures of the femoral neck.
我们对10例移位性囊内髋关节骨折患者进行了单光子发射计算机断层扫描（SPECT）和平面骨扫描，以评估股骨头血运情况。用四环素标记股骨头，在半髋关节置换术中切除后，通过紫外线照射下的荧光评估四环素摄取分布情况。四环素摄取量最高的4个股骨头在SPECT和平面成像上表现正常。有2例患者平面骨扫描正常，但SPECT提示无血运，从而得出假阴性结果。外科医生应注意这一点；SPECT可能是评估股骨颈骨折时股骨头血运更准确的方法。
