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Objective To evaluate correlation of CT features of tuberculous adrenal glands with duration of adrenal insufficiency and propose a new staging criteria for adrenal TB Methods CT features of 28 cases of documented adrenal tuberculosis were analysed retrospectively The patients were divided into 3 groups according to the duration of adrenal insufficiency: group A (10 cases , less than 1 year), group B (13 cases, 1 year to 4 years), group C (5 cases, longer than 4 years) The main CT features analyzed included size and shape of the adrenal gland, calcification ,and low density foci Results Enlargement of the adrenal gland: group A(10) , group B (13), group C (1) Basic configuration of adrenal gland were identifiable in group A ,whereas others had more irregular shape Calcification: group A (2) , group B (11),group C (5) Low density foci: group A (3), group B(0), group C (0) Conclusion CT features of adrenal glands correlated with duration of adrenal insufficiency in adrenal tuberculosis It is more reasonable to use tri phase criteria according to CT appearance in adrenal tuberculosis
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Objective To analyse the CT findings of Bochdalek hernia in adult.Methods The CT scan of 42 cases were reviewed showing a mass abutting the upper surface of the diaphragm, the defect was located in the posteromedial aspect of hemidiaphragm with continuity of subdiaphragmatic and supradiaphramatic densities through the diaphramatic defect. Among these, 25 cases were male and 17 cases female. The average age was 64 years, 71.4%≥60 old.Results 53 Bochdalek hernias were identified in 42 cases, 11 cases were bilateral, 21 cases were on the left and 10 cases were on the right side. The diaphragmatic defects diameter ranged 0.5～6.7 cm, the median was 2.8 cm. The range of Bochdalek hernias diameter was 1.5～9.0 cm, with median of 3.7 cm. There was a significant association between diaphragmatic defects and size of hernias (r s=0.72,P
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Objective To evaluate the value of CT scan in patients with obstructive sleep apnea syndrome (OSAS) pre and post surgical operations.Methods 36 patients with OSAS and 50 normal adults were included in this study .The patients were divided into two typesaccording to the location of stricture site .The upper airway from roof of nasopharynx to glottis was evaluated using a Siemens Somatom Spiral Scanner and divided into upper pharyngeal and lower pharyngeal. The cross sectional area of two planes were measured and calculated. Meanwhile, The surgical effect of two types were compared by the pharyngeal area and AHI, SaO2 pre and post operations.Results Ⅰ type:The area of upper pharyngeal expanded (P0.05).AHI from 52.7 to 37.2 and SaO2 from 59.8% to 68%(P
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Objective To investigate the diagnostic value comparatively of CT and radiography in pneumoconiosis.Methods Chest radiographic and CT images were analyzed retrospectively in 52 cases with pneumoconiosis.Results The pulmonary disseminated small shadowes (diameter 10 mm),13 cases and 9 cases were detected by CT and radiography respectively.20 cases (5 pneumonia,3 pulmonary tuberculosis,1 lung cancer,6 pneumothorax,4 pulmonary emphysema) and 10 cases (1 pneumonia,1 pulmonary tuberculosis,6 pneumothorax,2 pulmonary emphysema) with complications were showed by CT and radiography respectively.Conclusion CT is not superior to radiography in diagnosis of simple pneumoconiosis,but CT is superior to radiography detecting the big shadow of lung and complications,and it can help radiologists to avoid mistakes.
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Objective To study the value of imaging characters in diagnosing mediastinal tumors.Methods X-ray and CT findings of pathologically proved mediastinal tumors in 58 cases were analysed,the findings enabling qualitative diagnosis were recommended. Results There were 40 cases of anterior mediastinal tumors including intrathoracic thyroid tumors [n=32,5 tyroid carcinomas and 1 thyroid cyst ,thymomas (n=3) and teratomas (n=5, 3 cases ruptured)]. All the other 18 cases in posterior mediastinum were neurogenic tumors.Conclusion Based on the combination of the mediastinal compartment knowledge, X-ray and CT findings of the tumors and the clinical information, the qualitative diagnosis of mediastinal tumors will be characterized correctly.
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Objective To investigate the normal position and configuration of anterior mediastinum.Methods Chest CT scanning was performed in 100 healthy volunteers. Various parameters of the anterior mediastinum were measured, including position (shift distance from medial line of the body),frontal and retral width, and anterioposterior dimension.Results The normal range (with the limit of 95%) of the anterior mediastinum included: the position was shifted 5 mm to right and 15 mm to left, the frontal width was under 30 mm in both man and woman, the posterior width was under 40 mm in woman, and under 50 mm in man, the anterioposterior diameter was under 30 mm in woman and under 35 mm in man.Conclusion The normal region about position and configuration of the anterior mediastinum is established in this study. These data will helpful in detecting the subtle mediastinal shift or other abnormal situation affected the mediastinum.
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Objective To evaluate the CT appearances and diagnostic value of malignant obstructive jaundice.Methods The CT signs of malignant obstructive jaundice proved by surgery and pathology in 50 cases were analyzed ,among them ,there were 21 cases of cholangiocarcinoma,15 cases of the head of pancreas, 8 cases of ampullary carcinoma, 4 cases of gallbladder carcinoma and 2 cases of cholangiocarcinoma complicated with gallbladder carcinoma.Results CT features of malignant obstructive jaundice included dilatation of the bile ducts which presented as“soft rattan sign”,other findings were “truncation sign”,“soft tissue mass”,“double duct sign”,lymphadenopathy and ascites .Conclusion CT examination has important value in diagnosing malignant obstructive jaundice. It can supply accurate location and causes of obstructive jaundice.
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Objective To explore CT and HRCT manifestations of Swyer-James syndrome(SJS).Methods CT and HRCT were performed in 19 patients,3 of them underwent inspiratory and expiratory HRCT,1 patient surgically proved with bronchiolitis obliterans and bronchiectasis.Results CT demonstrated 37 lobes were involved appearing as hyperlucent and with decreased vascularity ,the volume of lobes decreased in 35(95%) ; CT showed 19 patients with brochiectasis , 2 patients with pulmonary tuberculosis , 6 patients with brochiolitis , and 3 with segmental atelectasis.Conclusion CT and HRCT are very useful for the diagnosis of SJS.
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Objective To investigate 16-slice spiral CT findings of bony canals of the internal auditory canal ( IAC ) fundus withmultiplanar reformation (MPR) and provide evidence for dignosis of lesions in the IAC fundus and surgery.Methods CT scan of thetemporal bone was performed in 30 volunteers. Bony canals of the IAC fundus were measured in images acquired with MPR.Results The mean?SD measurements (in mm) of the anteroposterior diameter and superoinferior diameter of fundus of the IAC was (4.07?0.97) mm and (3.24?0.88) mm respectively. The mean?SD measurements (in mm) of the length and width of bony canal for the labyrinthinesegment of the facial nerve was (3.04?0.52) mm and (0.96?0.31) mm, respectively. The mean?SD measurements (in mm) of the length and width of bony canal of the superior vestibular nerve was (2.52?0.48) mm and (0.83?0.30) mm respectively. The mean?SD measurements (in mm) of the length and width of bony canal of the cochlear nerve was (0.89?0.19) mm and (2.05?0.39) mm respectively. The mean?SD measurements ( in mm ) of the length and width of bony canal of the inferior vertibular nerve was ( 1.07?0.23 ) mm and (0.73?0.21) mm respectively. The mean?SD measurements ( in mm ) of the length and width of singular canal was (3.56?0.68) mm and (0.56?0.11) mm respectively . Conclusion MPR with 16-slice spiral CT can demonstrate the shape and measurements of the IAC fundus,which would contribute in dignosis of lesions in the IAC fundus and surgery.
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Objective To clarify the helical CT features and anatomic distribution of recurrence and metastasis of postoperative esophageal cancer.Methods Fifty patients ( 43 men , 7 women , ages 42~76 , mean 58 years ) with postoperative esophageal cancer underwent helical CT examination.On the basis of axial CT imaging , CT features were evaluated , including types , anatomic distribution and time of recurrence in patients with postoperative esophageal cancer .Results Among 50 patients , 31 patients developed recurrence and metastasis. Of 31 patients , 12 patients had recurrence of upper gastrointestinal tract , including esophagogastric anastomoses (n = 8), esophageal stump (n =1) , and intrathoracic stomach (n=3). Lymph node metastasis were investigated in 28 cases , which included right upper paratracheal (2R, n=11), and subcarinal right(7+8, n=11) ; 13 patients possessed lymph node metastasis of two and over-two regions ; Five patients had abdominal para-aortic lymph node metastasis. Metastasis of lung, liver and pancreas were discovered in 8, 7 and 1, respectively. There were six with pleural fluid . All of recurrence and metastasis occurred in the periods from 3 months to 1 year after surgery (P
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Objective To study the relationship between CT and clinic in hemorrhagic infarction . Methods CT findings in 43 cases with hemorrhagic infarction were retrospectively analyzed ,including 30 males and 13 females and aged 26～72 years (mean 51 years) . Most cases had hypertension , headache or/and vomiting . 29 cases were followed up with CT scan after clinical treatment . Results Most cerebral infarction occurred in middle cerebral artery or their branches . On plain CT scans , the lesion appeared as sector , triangular or irregular area of low density in which presented high density lesions of patch and plaque. Conclusion CT is the first diagnostic method for hemorrhagic infarction . CT follow-up can help to observe the treatment result and to evaluate the prognosis of this disease.
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Objective To study the CT features of cerebral infarction and the relation to blood glucose level in diabetes mellitus.Methods The CT features and relation to the level of blood glucose were retrosepectively analyzed in 41 cases of cerebral infarction diabetes mellitus.The diagnosis of diabetes mellitus was based on the WHO criteria in all cases.Results The focus of infarction located at the area of base ganglion,brain stem and thalamencephalon in 38 cases(92.7%).Multiple focus was found in 30 cases(73.2%)and there was positive correlation between focus number and the level of blood glucose.Lacuna cerebral infarction was observed in 38 cases(92.7%) and large patchy cerebral infarction in 3 cases.Brain white matter demyelination was complicated in 24 caese(58.5%).Conclusion Cerebral infarction of diabetes mellitus mainly manifestes as multiple lacuna cerebral infarction and has close relation to the level of blood glucose.
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80% of low density area in tumor), 10 PR(50%-80%) and 3 NC(0.05). Conclusion For tumor treated with hyperthermia plus radiotherapy, the response evaluation should be based on both the change in the mass size and the percentage of low density area in the tumor.
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Objective To study the appearances of split cord malformation(SCM)and evaluate the diagnostic value of CT for SCM.Methods Clinical and CT data of 48 cases with SCM were analyzed retrospectively ,21 were males and 27 were females,ranged from 1 day to 8 years with a mean of 11.6 months. All cases evaluated by plain CT with coronal and sagittal reconstructions.Results Type I accounted 75%, consisted of two hemicords, each contained in its dural tube and separated by a rigid median septum .TypeⅡaccounted 25%, consisted two hemicords contained in a single dural sac separated by a non-rigid, fibrous median septum. Associated abnormalities: tethered cord syndrome(n=38), syringomyelia(n=9), intradural lipomas(n=10), meningocele(n=18).Conclusion CT can clearly demostrate the position, the septum and the shape of the SCM, as well as associated abnormalities.