ABSTRACT
Objective To explore the technical advantages and clinical value of dual-source and image re-construction technique application in lumbar spondyloschisis without sliding .Methods 36 cases of patients with LSWS were collected who were examined by dual-source CT scan and diagnosed definitely .18 cases of patients were examined by X-ray( including lumbar vertebrae and double oblique ) .The diagnosis rate of X-ray and CT scanning in diagnosing LSWS were calculated ,which was made statistical analysis .The image of 36 cases patients with LSWS were reconstructed by multi-planar reconstruction ( MPR) ,volume rendering technique ( VR) and curved planar reconstruc-tion( CPR) .The display rate was calculated , which was made statistical analysis according to various image recon-struction in diagnosing LSWS .Results 7 cases of patients with LSWS were found by X-ray examination .36 cases of patients with LSWS were found by dual-source CT examination .The display rate was 38.9%and 100.0%.71 LSWS were found in 36 cases of patients with LSWS ,35 cases were bilateral spondylolysis ,1 case was unilateral spondylolys-is.In several image reconstruction methods ,CPR and cutting VR showed the highest rate in diagnosing LSWS ,which was 100.0%.The symptom of LSWS in X-ray examination:local thinning and structural disorder in lumbar spondylol-ysis,cortical discontinuity .The symptom of LSWS in CT examination were as follows:clear linear low density shadow in lumbar,ends hardening and bone fragments in some case .Conclusion The dual-source CT and its image recon-struction technology have the technological superiority and higher clinical value in diagnosing LSWS ,which is crucial to prevent LSWS misdiagnosed ,and could become the preferred examination in screening and diagnosing LSWS .