多层螺旋CT成像技术在筛骨纸样板骨折中的临床应用价值

探讨多层螺旋CT成像技术对筛骨纸样板骨折的应用价值。对97例筛骨纸样板骨折病例行多层螺旋CT容积扫描后，进行轴位高分辨率重建、冠状位多平面重组及薄层最大密度投影、容积再现等后处理，并与原始图像比较。线性骨折42例，骨折线呈线样、无明显移位等；凹陷性骨折48例，纸样板内移凹陷、皱褶成角等；非凹陷性骨折7例，纸样板断裂、外移但仍保持弧形外凸形态；“双边征”12例；合并内直肌肿胀等39例，眶内积气、筛窦积液66例，球后出血15例。多层螺旋CT及后重建技术能精确显示纸样板骨折的直接、间接征象，并可进行分型，是诊断纸样板骨折的有效方法。

Clinical application of multi-slice spiral computed tomography imaging with post-processing technology in lamina papyracea fracture

This paper aimed at evaluating clinical value of multi-slice spiral computed tomography (MSCT) with post-processing technology in diagnosis for lamina papyracea fracture (LPF). Volume scanning with MSCT was performed for 97 cases with LPF followed by post-processing with axial highresolution reconstruction, coronal multi-planar reformation ( CMPR), coronal maximum intensity projection (CMIP) and volume rendering (VR). Obtained images in the patients with fracture were compared with their primary axial scanning, including 42 with line-type fracture without obvious dislocation, 48 cases with depression fracture with dislocation, and seven cases with non-depression fracture showing dislocation.Twelve of them displayed "two margins sign", seven diagnosed by CMPR and CMIP images and five by VR combined with CMPR. Thirty-nine cases complicated with swelling of the intraocular muscle, 25 with intraorbital fat hernia into the ethmoid sinus, 66 cases with intraorbital air and liquid deposited at the ethmoid sinus, and 15 with retro-bulbar hemorrhage. MSCT with post-processing technology can accurately display direct and indirect signs of LPF which can be further divided into varied types, and is the most effective method in clinical diagnosis.