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骨折金属固定术后双能量CT图像质量的初步研究 被引量:8

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摘要 目的探讨骨折金属固定术后双能量CT单能谱成像技术的图像质量。方法对36例骨折金属固定术后复查的患者使用双源CT双能量扫描,采用双能量扫描程序,一次性扫描采集2个不同能量的数据。所得原始数据的后处理采用100 kV及140 kV 2个不同能量的数据用单能谱成像技术利用不同的能谱直接进行不同密度的金属减影。所得数据进行单能谱成像法重建,包括多平面重建技术(MPR)、容积显示(VR)和最大密度投影(MIP),对图像质量进行评价。结果 MPR、VR、MIP 3种重建技术所得图像质量均可满足影像学评价,细节显示清楚,固定物位置及骨折对位或对线情况显示清晰;对于金属固定物的准确位置显示、骨折处小骨片或椎管内、椎皮质细节情况显示欠佳。图像质量为优者平均达90.7%。无图像伪影占87.0%。结论双能量单能谱CT扫描技术能够有效去除金属伪影,清晰显示骨折金属固定术后的细微结构,图像质量较高。
出处 《广东医学》 CAS CSCD 北大核心 2012年第2期235-237,共3页 Guangdong Medical Journal
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共引文献154

同被引文献62

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