64 层CT 多向调整多平面重组诊断

64 层CT 多向调整多平面重组诊断
长骨病变的价值
陈海松 柳澄 陈青华
【摘要】 目的 前瞻性研究64 层CT 的多向调整多平面重组( MPR) 在长骨病变中的应用价值,
及其替代直接扫描横断面图像及平片的可能性。方法 对平片发现的长骨病变进行64 层CT 各向
同性扫描, 然后进行MPR 成像, 并进行MPR 多方向调整, 使病变显示于长骨的冠状及矢状长轴面上。
其中50 例进行了手术并有病理诊断结果, 就其长轴面MPR 图像、直接扫描CT 横断面图像、平片对病
变的诊断符合率进行对比, 并对比长轴面MPR 与直接扫描横断面CT 的图像数量。结果 64 层CT
多向调整的长轴面MPR 对病变的诊断符合率为96 % ( 48 /50 例) , 高于直接扫描CT 横断图像( 72% ,
36 / 50 例) 及平片( 80 % , 40 /50 例) , 3 种方法比较, 差异有统计学意义( χ2
= 10. 71、6. 06, P 值均<
0. 05) , 而图像数量明显少于横断面CT( MPR 50 幅图像, 横断面CT 300 幅图像) 。结论 多向调整的
长轴面MPR 解决了多层CT 图像数量庞大的问题, 并提高了诊断符合率, 是长骨病变CT 诊断的
趋势。
【关键词】 体层摄影术, Χ线计算机; 图像处理, 计算机辅助; 骨疾病
The value of mult i-dir ection adjusted multiplanar reconst ruction using 64-slice CT in diagnosing long
bone disea ses CHEN Hai-song* , LIU Cheng, CHEN Qing-hua. Shandong University Medical School,
Shandong Provincia l Medical Imaging Institute, Jinan 250021, China ( * Now in: 250021 Postgra duate of
Shandong University Medical School, Jinan)
Corresponding author: LIU Cheng, Email: cjr. liucheng@vip. 163. com
【Abstra ct 】 Objective To study the value of multi-direction adjusted multiplanar reconstruction
( MPR) by 64-slice CT in diagnosing long bone diseases, and the possibility of the MPR to replace plain film
and CT direct-scanning axial images. Methods Long bone lesions discovered by plain films were scanned
by 64- slice CT using isotropic parameters. Then multi-direction MPR were performed to display long-axial of
lesions on coronal and sagittal planes besides axial images. 50 patients were performed surgical operations
and pathological diagnosis were obtained. The coincident diagnosing rate with pathological results were
compared statistically among multi-direction MPR , direct-scanning axial CT images, plain films; Amounts of
images were also compared between long axial MPR and direct scanning axial CT images. Results The
coincident diagnosing rate of long bone diseases by multi-direction adjusted long-axial MPR imaging was
96% ( 48 /50 ) , which was higher than by axial CT( 72%, 36 /50 ) and plain film( 80% , 40 /50 ) , The
differences between above every two modalities were significant ( χ2 = 10. 71, 6. 06; P < 0. 05) . The amount
of long-axial MPR images was much fewer than that of axial CT images ( MPR 50 images, axial CT 300
images ) . Conclusion Multi-direction adjusted long-axial MPR has solved the problem of too large amounts
of images by multi-slice CT , and it improves the coincident diagnosing rate, and it is the trend of CT
diagnosing of long bone lesions.
【Key words】 Tomography, X-ray computed; Image processing, computer-assisted; Bone
diseases

64 层CT 多向调整多平面重组诊断--骨格.rar