64层CT后处理在长骨恶性肿瘤诊断中的价值

Value of 64-slice spiral CT postprocessing in the diagnosis of malignant tumors of long bone

目的:评价64层螺旋CT后处理技术在长骨恶性肿瘤诊断中的应用价值。方法:52例长骨恶性肿瘤患者行64层螺旋CT扫描后,做多层面重建(MPR)和容积成像(VR)2种后处理。结果:每一种重建图像均显示了所有的肿瘤。其中MPR准确显示了肿瘤骨的骨破坏、骨膜的改变、骨破坏的范围及肿瘤对周围软组织的侵犯情况;VR能立体显示骨改变,在增强的基础上可以显示肿瘤的供血动脉、静脉和肿瘤血管。2种后处理图像结合横断层面图像能从不同方向准确显示肿瘤的范围、骨改变、骨膜反应的形态及肿瘤对周围组织的侵犯。结论:64层螺旋CT后处理技术可以全面、准确地显示长骨恶性肿瘤,结合横断面图像,可对长骨恶性肿瘤作出准确的影像诊断。

Objective： To evaluate value of postprocessing of 64 slice MSCT reconstruction techniques in diagnosing malignant tumors of long bone. Methods： Reconstruction techniques were used after 64-slice CT imaging had been completed for 52 patients with long bone tumors. Based on the raw data, two kinds of image reconstruction, including multiple planar reconstruction（MPR） and volume rendering（VR） were carried out. Results： All reconstructed images showed bone tumor. MPR accurately displayed bony damage, changes in periosteum, extent of bony damage and tumor invasion to surrounding soft tissues; VR displayed changes in bone stereographically; VR on basis of enhancement, displayed supplying arteries, veins and neoplastic blood vessels. The two techniques combined with cross-sectional images were able to display bony damage, type of periosteal reaction, extent of tumor and invasion of tumor to surrounding tissues along different axes. Conclusion： The two kinds of 64-slice CT postprocessing images can fully and accurately demonstrate the malignant tumors of long bone, combined with the axial images correct evaluation of the malignant tumors of long bone can be made.