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Objective To investigate the value of Computed Tomography Myelography(CTM) and CT in diagnosis of in intravertebral tumors.Methods 35 tumors in the canales spinalis examined by CTM and CT and confirmed by surgical-pathologic results were retrospectively analyzed.Results 10 intramedullary(28 6%),15 intradural extramedullary(42 9%) ,8 intradural(22 9%) and 2 intra-extradural tumors(5 7%) were diagnosed respectively by CTM and CT.Conclusion CTM and plain and enhancement CT scanning can reveal the features of every kind of tumors in the canales spinalis and determine correctly respective position and nature.
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Objective To study the relevant factors and prevention of X-ray missed diagnosis in rib fracture.Methods 28 cases of rib fracture in the X-ray missed diagnosis were retrospectively reviewed. The relevant factors and preventive question of X-ray missed diagnosis were explored.Results Careless reading of film(n=3),wrong position of taking film(n=7),film of low quality(n=4),image of rib fracture concealed by other image (n=11) and improper time of taking film(n=3) were found as the cause of missed diagnosis.Conclusions The X-ray examination of chest is the most practical method in diagnosing rib fracture. The choice of position in taking film,quality assurance of film,the right time in taking film and carefulness in reading film may affect the diagnosis of rib fracture.
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Objective To study the radiographic findings of the chest in patients after open heart surgery and its evaluating methods.Methods 236 cases after open heart surgery were divided into 3 groups according to the date of the first postoperative chest films:0～3 d,4～7 d and 8 d or more.The findings on pre and postoperative chest films were compared in 7 aspects respectively.Results 8 typses of complications were detected including severe ones such as acute pulmonary edema,the low cardiac output syndrome and ARDS.The incidences of widening of the mediastinum,pleural effusion and pulmonary interstitial edema were lower in over 8 d group than those in the other two groups(?