Manifestation of Intestinal Tuberculosis on Multi-slice Computed Tomography Enteroclysis / 中山大学学报(医学科学版)

[Objective] To summarize image manifestations in intestinal tuberculosis (ITB) examined by multi-slice computed tomography enteroclysis (MSCT) and evaluate the diagnostic value of MSCTE in ITB,[Methods] The imaging findings were retrospectively analyzed in 15 cases of ITB that were confirmed by endoscopy or postoperative pathologic examination,including the location,number,shape,edge,surrounding tissue alterations of ITB and other associated changes in the peritoneum,mesentery and solid abdominal organs,and compared with endoscopy and pathology.[Results] In 15 patients,ileocecum was involved in 13 cases (87％),4 cases (27％) showed multi-segmental symmetric intestinal mural thickening,9 patients (60％) showed solid masses,1 case (7％) showed multi-segmental symmetric intestinal mural thickening and solid masses,1 case (7％) showed homogenous enhanced masses and perforation,12 cases (86％) showed enlarged lymph nodes (LNs) with rim enhancement,and 2 cases (13％) showed the comb sign of enhanced mesenteric vessels.Based on enhancement pattern of MSCTE,ITB was divided into three types:homogenous enhancement type (n=5);target sign type (n=2);caseous necrosis type (n=2).[Conclusion] The imaging features of ITB are diverse.MSCTE can clearly display the shape of intestinal mucosa,the alterations of intestinal wall and the relationship between lesion and adjacent tissues,which provides valuable information for the clinic diagnosis of ITB.

CT and MRI findings of pancreatic neuroendocrine neoplasm / 中国介入影像与治疗学

Objective To demonstrate the imaging characteristics of pancreatic neuroendocrine neoplasm (P-NEN).Methods The CT and MRI findings of 43 cases of P-NEN confirmed by pathology were analyzed,and compared with pathological results.Results Mean size of 43 lesions in 43 P-NEN patients were (25.00± 1.82)mm.Necrosis cystic degeneration were found in 26 lesions.In CT plain scan,15 lesions were isodense,28 lesions were hypodense.All of 43 lesions were hypointensity signal on T1WI;27 lesions were hypointensity signal,16 cases were isointensity signal on T2WI.Twenty-seven lesions showed envelope;30 lesions showed clear outline.In enhancement images,24 lesions were marked enhancement since arterial phase;8 lesions showed delayed enhancement;5 lesions showed centrality enhancement;6 lesions showed wild enhancement.Conclusion P-NEN has some characteristics on CT and MRI scanning,imaging can play an important role in diagnosis for P-NEN.

Visceral abdominal adiposity tissue volume quantification using noninvasive MRI in prediction of type 2 diabetes / 中国医学影像技术

Objective To investigate the feasibility of utilizing visceral abdominal adiposity tissue (VAT) volume quantification using MRI to predict type 2 diabetes mellitus (T2DM).Methods Forty-eight subjects including 15 T2DM (T2DM group),17 impaired glucose tolerance (IGT,IGT group) and 16 normal glucose tolerance (NGT,NGT group) were enrolled in this study.All subjects underwent upper abdominal iterative decomposition of water and fat with echo asymmetry and least square estimation-image quantification (IDEAL-IQ) MRI scanning.VAT volume of the second and third lumber vertebral body ranges (VATV L2,VATV L3),sum of VATV L2 and L3 (total VATV),hepatic and pancreatic fat were measured in fat fraction mapping of T1WI IDAEL-IQ sequence on post-processing workstation.The accuracy of predicting T2DM using VAT was evaluated by Logistic regression equation via ROC curve.Results The mean of VATV L2,VATV L3 and total VATV in T2DM group were significantly higher than those of IGT group and NGT group (P＜0.05),while there were no significant difference of these metrics between IGT group and NGT group (P＞0.05).Taking 460.34 ml as the cut-off value for VATV L2 to predict T2DM,sensitivity was 73.33％,specificity was 75.76％ and accuracy was 75.00％,respectively.Taking 429.46 ml as the cut-off value for VATV L3 to predict T2DM,sensitivity was 86.67％,specificity was 72.73％ and accuracy was 77.08％,respectively.Taking 887.83 ml as the cut-off value for total VATV to predict T2DM,the sensitivity,specificity and accuracy were 86.67％,72.73％ and 77.08％,respectively.Only VATV L3 was enrolled by Logistic regression equation (P=0.01,OR=1.01),and the sensitivity,specificity and total accuracy of prediction for T2DM were 80.00 ％,88.20 ％,and 84.40 ％,respectively.Conelnsion It is feasible to utilize VAT volume quantification with MRI to predict T2DM.VATV L3 is a better predictor.

Multi-slice Computed Tomography Enteroclysis in Evaluation of Active Ulcerative Colitis / 中国医学影像学杂志

Purpose To summarize the characteristics of computed tomography enteroclysis (CTE) in active ulcerative colitis (UC), and to explore the value of multi-slice CTE in the evaluation of UC. Materials and Methods Thirty-five patients with active UC confirmed by clinical manifestation, colonoscopy and pathology underwent CTE examination in the study. According to the modiifed Mayo-score, the patients were divided into mild group, moderate group and severe group, and the CTE manifestations were compared among the three groups. Results Among 35 patients, 6 patients were in the mild group, 13 in the moderate group, and 16 in the severe group. Submucosal bubbles had signiifcant differences between mild and moderate groups (P0.05). Conclusion Multi-slice CTE can provide image features of bowel wall, intestinal tube and structures outside intestine in the evaluation of UC, thus it is useful in the diagnosis of active UC as well as in its clinical grading.