Study on anatomic variation of the portal vein based on magnetic resonance angiography using THRIVE sequence / 实用放射学杂志

Objective To analyze the anatomic variation of the portal vein based on magnetic resonance angiography using THRIVE sequence in one-stop examination of the liver.Methods Reconstructed three-dimensional images of 648 cases of hepatic portal vein acquired by THRIVE sequence were analyzed.Anatomic variation of the hepatic portal vein was investigated and the diameters of main portal vein (MPV), splenic vein (SV), superior mesenteric vein (SMV) and inferior mesenteric vein (IMV) were measured.Results (1)Four types of different variations of intrahepatic portal vein were observed, with normal type accounting for 79.2% (514/648), type Ⅰ 8.3% (54/648), type Ⅱ 9.0% (58/648) and type Ⅲ 3.4% (22/648), respectively.(2)Four types of different variations of extrahepatic portal vein were also observed, with type Ⅰ accounting for 37.4% (167/447), type Ⅱ 20.4% (91/447), type Ⅲ 36.2% (162/447) and other 6.0% (27/447), respectively.(3)Diameter of MPV, SV, SMV and IMV were (14.03±2.44) mm, (9.51±2.40) mm, (11.14±1.99) mm and (6.01±0.78) mm, respectively.Conclusion It is feasible to analyze anatomic variation in the hepatic portal vein using reconstructed three-dimensional images acquired by THRIVE sequence in one-stop examination of the liver.

Factors associated w ith unfavorable outcome in minor ischemic stroke / 国际脑血管病杂志

ObjectiveToinvestigatetheriskfactorsforunfavorableoutcomeinpatientswithminor ischemic stroke. Methods Patients with minor ischemic stroke were enroled prospectively. The modified Rankin Scale ( mRS ) w as used to assess the clinical outcome at day 90 after onset, and mRS 0-2 w as defined as favorable outcome. The demographic data, vascular risk factors, clinical data, imaging data, stroke etiologic subtypes, laboratory test results, and treatment methods in the favorable outcome group and unfavorable outcome group w ere compared. Multivariate logistic regression analysis w as used to identify the independent risk factors for early poor outcome in patients w ith minor ischemic stroke. Results A total of 516 patients with minor ischemic stroke were enroled. At day 90 after onset, 90 patients (17.44%) had unfavorable outcome and 426 (82.56%) had favorable outcome. Multivariate logistic regression analysis showed that age (odds ratio [OR] 1.045, 95% confidence interval [CI] 1.017-1.074; P=0.002), heart diseases (OR 2.021, 95%CI 1.063-3.841; P=0.032), baseline National Institutes of Health Stroke Scale (NIHSS) score (OR 1.662, 95%CI 1.177-2.347; P=0.004), limb movement disorder ( OR 2.430, 95%CI 1.010-5.850; P=0.048), ataxia (OR 2.929, 95%CI 1.188-7.221;P=0.020), early neurological deterioration ( OR 50.994, 95%CI 17.659-147.258; P<0.001), infarct diameter ( OR 1.279, 95%CI 1.075-1.521; P=0.005), non-responsible vascular stenosis ( OR 2.518, 95%CI 1.145-5.536;P=0.022), and large artery atherosclerotic stroke ( OR 2.010, 95%CI 1.009-4.003; P=0.047) w ere the independent risk factors for unfavorable outcome in minor ischemic stroke. Conclusions The early poor outcome of minor ischemic stroke is closely associated w ith age, heart diseases, baseline NIHSS score, limb movement disorder, ataxia, early neurological deterioration, infarct diameter, non-responsible vascular stenosis, and large artery atherosclerotic stroke. The relevant examinations need to be improved early, the etiologic subtype should be identified, and the correct clinical treatment should be guided.

Application of low-dose multi-slice spiral CT in early lung cancer screening / 中国基层医药

Objective To evaluate the prevalence rate of pulmonary malignant disease in people at high risk of lung cancer through low-dose multi-slice spiral CT. Methods 1 200 symptom-free volunteers were under low-dose spiral CT scans in an on-going screening study. The people tested aged 40 or older regardless of their gender or smoking history. Low-dose CT scans were performed with Iightspeed Plus multi-slice scanner using spiral mode, 120 kV,30 mAs. Results Calcified nodules were detected in 32 participants and non-calcified nodules were detected in 18 participants by low-dose CT,in which 3 were vicious ones,including 1 non-solid lesion and 2 solid lesions. The detection rate of lung cancer was 0. 25%. Conclusion Low-dose multi-slice spiral CT was effective in detecting, classifying and defining lung nodules,and furthermore would make it possible to find lung cancer at earlier stage.

Correlational study between Idiopathic pneumothorax and thoracic deformity in the youth / 中国基层医药

Objective To test the possibility that the thoracic defomity is a risk factor of the diopathic pneumothorax in youth by making a statistical analysis of the thoracic sagittal diameter and transverse diameter ratio in patients and normal people. To study the correlation between this ratio and age of the patients. Methods 107 cases of idiopathic pneumothorax were taken as subjects and other 105 cases in' the same period with normal pneumothorax were used as the control group. T-test,correlation study and scottered spot maps were made based on the ratio of vertical and horizontal diameters,the mean and the age. Results The mean thorax aspect ration( MTAR) of the patients with spontaneous pneumothorax was 0.38, and MTAR in normal people was 0.44, indicating a statistical significance ( P < 0.01) of the difference of MTAR between the two groups. The age of the patients' first onset age and the ratio of vertical and horizontal diameter was positively correlated. Conclusion Thoracic deformity of idiopathic pneumothorax had a higher incidence in young people,and there was a positive correlation between of the age of their first onset and the ratio of vertical and horizontal tracks.

MR cholangiopancreatography diagnosis for cholangitis caused by clonorchis sinensis / 中华放射学杂志

Objective To evaluate the MR cholangiopancreatography (MRCP) diagnosis for cholangitis caused by clonorchis sinensis. Methods Fifty-four cases with cholangitis caused by clonorchis sinensis were examined by MRCP (3D FASE-Heavy T 2WI sequence). The results of MRCP were compared with that of ERCP, laparoscopy, and pathology. Results The diagnostic accuracy for the cause of the disease was 88.9%. Main findings on MRCP included slight dilation of the intra-hepatic biliary duct ( n =46), small cystiform dilation of peripheral biliary ending ( n =43), extra-hepatic biliary dilations ( n =15) and strictures ( n =19), and low signal intensity filling defect in the common bile duct and gallbladder ( n =6). Conclusion MRCP of biliary tree images can be obtained with 3D FASE Heavy T 2WI sequence in considerable details. The characteristic of the cholangitis caused by clonorchis sinensis on MRCP was the slight dilation or stricture of extensive intra-hepatic biliary duct, combined with small cystiform dilation of peripheral biliary ending. MRCP was an ideal technique in diagnosing the disease.