ABSTRACT
Objective To study the correlation of measuring bone density for diagnosing osteoporosis between VQCT and DXA. Methods 50 patients were measured bone density coinstantaneous by DXA and VQCT. All of the data was saved in computer and analyzed by SPSS soft.Results According to WHO criterion 14 patients were osteoporosis by F-DXA and 9 by S-DXA,and 23 by VQCT.The percent was respective 28%,18% and 46%. The results of VQCT were significantly different from the results of F-DXA and S-DXA (?
ABSTRACT
Objective To assess feasibility of three-dimensional(3D) reconstruction techniques and virtual gastroscopy of CT(CTVG)in diagnosing gastric tumors.Methods 22 cases doubted with gastric lesions were scaned by mutislice helic CT and reconstructed into CTVG and 3D images.The results were compared with fiberoptic gastroscopy(FG) and all of the cases were sure with gastric lesions and biopsied by gastroscopy or surgery operation.Results 22 patients was examinated successfully,and the lesions was proved by pathology of FG or operation.According to location and shape of lesions,there were more ulcer type(16) and more located at gastric antrum(14) in this specimen.Both CTVG and FG had one misdiagnosis respectively.Conclusion CTVG combined with 3D of MSCT is same sensitivity and specificity as FG.
ABSTRACT
Objective To study the value of clinical applications of multi-slice spiral CT(MSCT)3D reconstruction and MPR in knee joint traumatic fracture and the imaging technique of multi-slice spiral CT 3D.Methods 24 cases underwent MSCT and all data sets were done 3D and MPR in ADW 3.1 workstation.Results 3D reconstruction can indicated the site,direction of alignment,fracture degree,colapse,displacement length of trauma knee joint,MPR can viewed damage inside the bone.Conclusion 3D reconstruction and MPR has high application value in clinical diagnosis and choosing therapy methods.
ABSTRACT
Objective To study the value of multi-slice spiral CT(MSCT)and high-resolution MR in evaluating the feasibility of total mesorectal excision(TME)for rectal cancer before operation.Methods Sixty-three cases biopsy-proven rectal cancer underwent MSCT and high-resolution MR examination,including CT in 35 and MR in 28.The involvement of mesorectal fascia,lymph nodes extra-fascia and the curve distance between the lesions and the anal margin were observed and compared with that of operation and pathology.Results In evaluating the involvement of mesorectal fascia,two patients were oversteped by CT and one patient by MRI,and there was no significantly statistic difference between CT and MRI.The curve distance between lesions and anal margis could be measured accurately on sagittal section of MR images in all cases.Sixteen patients had been found having metastatic lymph nodes at extra-mesorectal fascia,twelve of them were biopsy-proven.Thirty-seven patients had been found having metastatic lymph nodes at intra-mesorectal fascia,but 4 of them were inflammatory biopsy-proven.Conclusion MSCT and high-resolution MR are of significant values in evaluating the feasibility of TME in the patients with rectal carcinoma.
ABSTRACT
Objective To investigate the accuracy of staging gastric cancer with multi slice spiral CT (MSCT) .Methods MSCT,3D reformation images and CTVE were performed in 39 patients with gastric cancer confirmed by gastroscopy and biopsy.The MSCT images were compared with the pathological findings.Results The accuracy of staging gastric cancer by MSCT in combination with 3D reformation images and CTVE was 86.7%. Conclusion The accuracy of staging gastric cancer by MSCT in combination with 3D reformative images and CTVE is very high.It is valuable to be extended clinically.