彩色多普勒超声在甲状腺癌诊断与鉴别诊断中的应用价值

目的：探讨彩色多普勒超声对甲状腺癌的诊断价值。方法：回顾分析甲状腺肿瘤63例,其中甲状腺癌33例,甲状腺腺瘤30例,全部经手术病理证实。观察并比较两种病灶的形态、大小、分布、血流形态、动脉血流速度、阻力指数和血流丰富程度。结果：本组病例中甲状腺癌与甲状腺腺瘤病灶结节在声像图及血流供应特征等方面都有明显差异。结论：高频彩色多普勒超声在甲状腺癌术前诊断中具有重要价值。     

老年人结肠癌彩超诊断与鉴别诊断

目的：探讨彩超在老年人结肠癌诊断与鉴别诊断中的应用。方法：回顾性分析63例经结肠镜活检或手术病理证实的老年结肠肿瘤彩超声像图。结果：结肠癌58例,非结肠癌5例。术前彩超诊断结肠癌55例,漏诊3例,误诊2例,非结肠癌3例,彩超诊断老年人结肠癌的敏感性94．8％,特异性60．0％,准确性92．1％,阳性预测值96．5％,阴性预测值50．0％。结论：彩超在老年人结肠癌诊断与鉴别诊断中具有重要价值。     

彩色多普勒超声评估诊断鼻咽癌放疗后颈动脉狭窄的效果及价值探讨

目的分析彩色多普勒超声(CDFI)诊断鼻咽癌(NPC)放疗后颈动脉狭窄的效果及价值。方法将2018年3月~2020年3月作为研究时间段,选取期间我院接诊的100例NPC放疗后颈动脉狭窄患者,均行CDFI检查,对诊断结果展开分析。结果(1)本组病例共检出5例完全闭塞(5.00%)、9例重度狭窄(9.00%)、31例中度狭窄(31.00%)、55例轻度狭窄(55.00%);(2)在颈动脉斑块类型方面,以硬斑块居多,共51例(51.00%);(3)颈动脉斑块主要累及颈总动脉(46.00%)。结论CDFI对于诊断NPC放疗后颈动脉狭窄有较好效果,能够明确颈动脉狭窄程度、斑块类型、斑块分布部位以及累及血管,值得推广。     

旋髂浅动脉皮瓣血管的解剖与超声评价

目的探讨彩色多普勒血流成像对旋髂浅动脉的显示价值,为旋髂浅动脉皮瓣的临床应用提供影像学信息。方法对60例拟取旋髂浅动脉皮瓣行重建术患者的旋髂浅动脉及其分支血管采用CDFI进行检测,观察旋髂浅动脉的走行位置,是否存在浅支,记录旋髂浅动脉的直径,距离皮肤的深度,并测量旋髂浅动脉的峰值流速及阻力指数等。结果彩色多普勒超声可清晰显示旋髂浅动脉的位置、直径及其血流信号;对于大部分患者可清晰显示其浅支。60例中检测到旋髂浅动脉深支60例,显示率100%;旋髂浅动脉浅支41例,显示率68.3%。超声对于旋髂浅动脉均做出了准确的评估并体表定位,与术中所见吻合。结论彩色多普勒超声能清晰地显示旋髂浅动脉并对其进行准确的术前评估,为皮瓣的设计提供影像学依据,具有重要的指导意义及应用价值。     

Malignant transformation of rectal endometriosis: Preoperative diagnosis by endorectal ultrasound guided biopsy

The prevalence of malignant transformation of endometriotic lesions is estimated between 0.3% and 1%. Malignant transformations of endometriosis occur in the colorectum is rarer, accounting for 0.25%. Because the malignant transformation of colorectal endometriosis rarely involves mucosa, it is difficult to obtain abnormal tissue by routine endoscopic biopsy. In this case, we evaluated a patient with a rectal mass by endorectal ultrasound (ERUS) and performed endorectal ultrasound-guided biopsy (EGB). Malignant transformations of endometriosis were confirmed by histological result. For patients with rectal tumors but with negative findings on colonoscopy and biopsy, ERUS and EGB contribute to preoperative diagnosis.     

彩超对子宫内膜癌的血流RI值与血清CA-125检测的意义及影响因素分析

目的探讨彩超检测血流阻力指数（RI）联合血清CA-125对子宫内膜癌的诊断价值及影响因素。方法收集2012年1月-2013年12月,我院收治的子宫内膜癌患者65例,进行彩超声检查并检测其血清CA-125水平,分析RI值、CA-125与组织学分级、临床分级、子宫肌层浸润深度、盆腔淋巴结转移之间的关系。结果 RI随病理分级、临床分期升高、肌层浸润深度的增加及盆腔淋巴结转移而降低;CA-125随肌病理分级、临床分期升高及盆腔淋巴结转移而升高（P〈0.05）。结论子宫内膜癌患者的彩超RI值与CA-125水平与病理特征密切相关,术前进行彩超检查肿瘤血流RI以及血清CA-125水平对于子宫内膜癌的诊断及治疗方案选择具有重要指导意义。     

彩色多普勒超声检查对骨科大手术后下肢深静脉血栓形成的临床意义

目的：探讨彩色多普勒超声检查骨科大手术后下肢深静脉血栓形成的临床意义。方法选取我院2010年1月～2013年12月行骨科大手术的532例患者作为研究对象,通过彩色多普勒超声检查分析骨科大手术后1周、2周下肢深静脉血栓形成的发生情况。结果经彩色多普勒超声检查,532例患者术后检查出208例下肢深静脉血栓形成,发生率达到39.10%,单侧肢体发生血栓的有172例,占82.69%;双侧肢体同时有深静脉血栓形成的有36例,占总血栓患者的17.31%;术后1周查出下肢深静脉血栓形成的患者有166例,占总病例的79.80%。第2周后检出下肢深静脉血栓形成患者占18.75%。结论骨科大手术后1周时间是下肢深静脉血栓形成较高的时期,彩色多普勒超声检查具有无创、准确以及敏感度高的特点,应作为骨科大手术后诊断下肢深静脉血栓的首选。     

Porcelain laminate veneers: Clinical survey for evaluation of failure

ObjectiveTo investigate the association of the failure of porcelain laminate veneers with factors related to the patient, material, and operator.MethodsThis clinical survey involved 29 patients (19 women and 10 men) and their dentists, including undergraduate and postgraduate dental students and dental interns. Two questionnaires were distributed to collect information from participants. All patients were clinically examined. Criteria for failure of the porcelain laminate veneers included color change, cracking, fracture, and/or debonding.ResultsA total of 205 porcelain laminate veneers were evaluated. All of the restorations were fabricated from IPS e.max Press and cemented with Variolink Veneer (Ivoclar Vivadent, Schaan, Principality of Liechtenstein) or RelyX veneer cement (3M ESPE, St. Paul, MN, USA). The preparations were generally located in enamel (58.6%), and most veneers had an overlapped design (89.7%). Ten patients (34.48%) showed veneer failure, most often in terms of color change (60%). Overall, 82.8% of patients were satisfied with their restorations.ConclusionInsufficient clinical skills or operator experience resulted in restoration failure in one-third of patients.