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(MPR50幅图像,横断面CT300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。
Objective To study the value of multi-direction adjusted muhiplanar 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 muhi-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 muhi-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 （X^2 = 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）. Condusion 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.
出处
《中华放射学杂志》
CAS
CSCD
北大核心
2006年第2期204-207,共4页
Chinese Journal of Radiology
