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目的:探讨CT多平面重组(MPR)技术在眼眶骨折法医鉴定中的价值。方法:对87例需要法医鉴定的眼眶外伤患者,行多层螺旋CT容积扫描后,用多平面重组技术重建出标准的轴位、冠状位、斜矢状位(与视神经长轴平行)图像及病情需要的任意角度的平行范围重组(MPR)图像,并对其观察分析。结果:87例眼眶外伤患者中,CT平扫显示眼眶骨折68例,可疑骨折14例,误诊5例。MPR图像多方位结合,明确显示或明确诊断85例,可疑骨折2例,误诊0例。轴位、冠状位、斜矢状位及任意角度的重组图像对眼眶外伤的诊断各有优势。结论:眼眶骨折CT单一方位图像均不利于法医鉴定,多方位结合的重组技术可为法医鉴定提供可靠的诊断依据。
Objective: To investigate the value of CT multiplanar reconstruction (MPR) in forensic identification of orbital fractures. Methods: Eighty-seven patients with orbital trauma who needed forensic identification were scanned with multi-slice spiral CT volume scan, and the standard axial, coronal, sagittal (parallel to long axis of optic nerve) images were reconstructed by multiplanar reconstruction The condition is required for any angle of the parallel range of recombinant (MPR) images, and its observation and analysis. Results: In 87 cases of orbital trauma patients, CT plain showed 68 cases of orbital fracture, suspicious fracture in 14 cases and misdiagnosis in 5 cases. MPR images multi-directional combination of clear or definite diagnosis of 85 cases, 2 cases of suspected fracture, misdiagnosis in 0 cases. Axial, coronal, oblique sagittal and any angle of the recombinant images of the diagnosis of orbital trauma have their own advantages. Conclusion: Orbital fractures CT unilateral images are not conducive to forensic identification, multi-directional combination of recombinant technology for forensic identification to provide a reliable basis for diagnosis.