Clinical Applicable Value of Image Retro - reconstruction with 16 - slice Spiral CT in Spondyloschisis of the Lumbar Spine

Objective To evaluate the diagnostic and clinical value of image retro - reconstruction with 16 -slice spiral CT( 16sCT) in the spondyloschisis of the lumbar spine. Methods Axial thin layer recnstruction,maximum intensity projection(MIP), multiplanar reformation (MPR), surface shade display(SSD) and volume redering( VR) image of spondyloschisis of lumbar spine were carried on and the CT images were relatively analysed. All cases were operated and followed - up. Results Four Cases were unilateral spondyloschisis and 26 cases were bilateral spondyloschisis in the combined findings included small crack (5) incomplete crack (4) , formation of hy-perostsis or osteotylus(25), stenosis of nereve root canal (27), stenosis of the latetral recess(25) , spondyloschisis (10), thickening of the ligament flava (23) were displayed in image retro - reconstruction. Only 42 spondyloschisis of 22 cases were displayed in image of routin axial scan. The diagnostic value of image retro - reconstruction with 16 spiral CT in the spondyloschisis of the lumbar spine outweigh the image of common CT. In term of compression of nerve root and stenosis of spinal canal and nerve root caral, all cases were carried on decompression and fixation. Conclusion 16sCT can not only correctly diagnosis spondyloschisis and provide objective information of image in selecting surgical treatment method.