Objective To evaluate the urine cytology silver staining combined with ultrasonography（USG）in the detection of bladder transitional cell carcinoma （TCC） recurrence after transurethral resection of bladder tumor（TURBT）in terms of sensitivity and specificity. Methods Cystoscopy was used as “gold standard”. Urine cytology combined with USG or cystoscopy was measured separately and blindly. AgNORs protein stained by silver were used in cytology with Kappa of inter-observers 0.81. For the USG, the patients were scanned with trans-rectal probe with Kappa of inter-observers 0.76. The results of urine cytology combined with USG （Positive when urine cytology and/or USG positive. Negative when both urine cytology and USG negative） were compared with “gold standard”. Results The 148 consecutive superficial TCC patients with TURBT one year previously were included in this study. Fifty seven recurrenced cases were detected. Recurrence rate was 38.51%. The sensitivity and specificity of urine cytology silver stain were 89.47% （95% CI 0.82 to 0.98） and 87.91% （95% CI 0.81 to 0.95）. Area under ROC curve was 82.22%. The sensitivity and specificity of USG were 57.90% （95% CI 0.45 to 0.71 ） and 90. 11% （ 95% CI 0.84 to 0.96）. Area under ROC curve was 73.13% . The sensitivity was improved to 94. 74% （95% CI 0.89 to 1.00） when cytology combined with USG. But specificity decreased to 84. 62% （95% CI 0.77 to 0.92 ）. Area under ROC curve was improved to 98.28%. Conclusions Urine cytology silver stain combined with USG improves the high sensitivity for follow-up TCC patients after TURBT. The non-invasive protocol is suggested.
目的 探讨胰管结石慢性胰腺炎的诊断和治疗。方法 收集我院1993年3月至2003年9月经手术治疗的胰管结石慢性胰腺炎患者34例的临床资料并进行回顾性分析。结果 全组病例均经B超和CT检查确诊，均经手术治疗。手术方式： 胰十二指肠切除术5例； 胰管切开取石、胰空肠Roux-Y吻合术27例，其中同时行胆囊切除术6例，Oddi扩约肌切开、T管引流术4例，胆肠Roux-Y吻合术2例； 胃空肠、胆肠吻合加活检术2例。治愈31例，缓解2例，死亡1例。结论 影像学检查是诊断本病的重要手段，准确率高。根据合并症和胰管扩张程度选择合适的手术方式，可取得良好治疗效果。
目的:探讨B超检查对急腹症的临床应用价值。方法:回顾性分析326例急腹症的超声表现并与手术后、病理诊断以及随访结果进行对照。结果:326例急腹症中以急性胆囊炎、输尿管结石、急性阑尾炎以及妇科急症常见,共289例,占88％,其他急腹症37例,占12％。经手术和病理证实217例,109例临床随访证实。超声符台率89.9％。结论:B超检查对急腹症的早期诊断以及鉴别诊断具有重要临床意义,是急腹症首选的诊断方法。
目的 探讨与评价术中B超定位下经肝胆管取石在肝内胆管结石治疗中的手术指征及优劣性。方法 总结2002～2006 年29例肝内胆管结石行肝叶切除+经肝胆管取石患者的临床资料,对其手术效果及并发症进行分析。结果 无胆管损伤及手术死亡病例, 并发症发生率为37.93%，残石率为10.34%。结论 术中B超定位下经肝胆管取石结合肝叶切除对肝内胆管结石是一种较好的治疗方式，主要适用于Ⅱb型肝内胆管结石患者。
ObjectiveTo investigate the therapeutic effect of B ultrasound-guided percutaneous catheter drainage combined with veno-venous hemofiltration at different time points and multi-site in treatment of hyperlipidemic severe acute pancreatitis (HL-SAP). MethodsThe clinical data of 34 patients with HL-SAP initially underwent B ultrasound-guided percutaneous catheter drainage combined with veno-venous hemofiltration at different time points and multi-site from January 2010 to June 2014 were retrospectively analyzed. According to the different of the onset to treatment time, 34 cases were divided into the≤24 h group and > 24 h group. The serum platelet activating factor (PAF) and triglyceride (TG) at the time of admission and after admission 1, 3, 5, 7, and 10 days were detected, and the hospitalization time, mortality, and the rate of conversion to open surgery were observed. ResultsThe levels of PAF and TG in the both groups tended to gradually decrease with different degrees, were significantly lower than that the before treatment (P < 0.05), and the decline of PAF and TG in≤24 h group were more significant than > 24 h group. The hospitalization time, mortality, and the rate of conversion to open surgery in the≤24 h group were significantly lower than those of the > 24 h group (P < 0.05). ConclusionThe early using of B ultrasound-guided percutaneous catheter drainage combined with veno-venous hemofiltration at different time points and multi-site would have a beneficial impact on the management of HL-SAP and complications.
目的报告8例肝血管平滑肌脂肪瘤的影像学特征及病理学特点，探讨其诊断与治疗方法。方法对8例经手术及病理证实的肝血管平滑肌脂肪瘤的术前影像学表现（B超、CT、MRI、99mTcPMT）、手术情况及病理特点进行分析。结果B超： 肿瘤呈强回声光团6例，低回声光团2例； 边界清楚7例，血供丰富、内部回声不均匀4例，其中1例内部呈分隔网状结构。彩色Doppler超声示肿瘤血供丰富，均测及动脉频谱，阻力指数为0.4～0.5。静脉造影示肿瘤内血流信号明显增加。CT： 平扫示肿瘤呈低密度影7例，不均匀5例，边界清楚7例，肿瘤内见软组织影2例，脂肪成分2例。增强扫描示动脉期明显强化，门脉期及延迟期逐渐呈低密度。MRI: 肿瘤呈短T1、长T2信号，增强后强化明显，脂肪抑制后短T1变成长T1。99mTcPMT示肿瘤呈放射性增强，5 min相肿块区呈放射性缺损，2 h、5 h延迟相肿块区未见放射性填充，肝血池相肿块呈放射性填充。病理及免疫组化： 肿瘤由成熟的脂肪、血管及平滑肌组成，HMB45阳性。术前确诊3例。结论B超示强回声光团，CT呈低密度影中出现软组织影、脂肪成分，增强明显，MRI出现脂肪信号，脂肪抑制后短T1变成长T1，增强明显。99mTcPMT示肿瘤呈放射性增强，5 min相呈放射性缺损，延迟相未见放射性填充，肝血池相呈放射性填充。这些是肝血管平滑肌脂肪瘤的影像学特点，结合病史可作出诊断。此病应尽早手术治疗，行肝部分切除术。最后确诊依靠病理检查及免疫组化分析。
B-type ultrasound images have important applications in medical diagnosis. However, the widely spread intensity inhomogeneity, low-scale contrast, constructed defect, noise and blurred edges all make it difficult to implement automatic segmentation of lesion in the images. Based on region level set method, a subordinate degree region level set model was proposed, in which subordinate degree probability of each pixel was defined to reflect the pixel subjection grade to target and background respectively. Pixels were classified to either target or background by calculation of their subordinate degree probabilities, and edge contour was obtained by region level set iterations. In this paper, lesion segmentation is regarded as local segmentation of specific area, and the calculation is restrained to the local sphere abide by the contour, which greatly reduce the calculation complexity. Experiments on B-type ultrasound images showed improved results of the proposed method compared to those of some popular level set methods.
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