共查询到19条相似文献,搜索用时 46 毫秒
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目的 探讨彩色多普勒超声(CDFI)对肝移植术前术后的应用价值.方法 对39例肝移植患者分别于术前术后多次进行彩色多普勒超声检查,并检查21例健康人肝的血流动力学改变.结果 术前彩色多普勒超声筛选适合手术患者36例,其中肝癌21例,肝硬化失代偿11例,肝硬化并肝癌4例.术后早期出现肝脏轻度增大,不同程度的胸腔积液、腹腔积液及胆囊窝积液.10例出现排斥反应,1例出现肝动脉并发症.结论 彩色多普勒超声对肝移植术前、术后的检查具有重要的临床意义,术前可选择适合手术的患者,术后可有效地观察移植肝形态学变化及血流动力学的变化,对提高肝移植手术的成功率有重要的应用价值. 相似文献
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随着新的器官保存液和新的免疫抑制剂的应用以及肝移植手术技术的进步,使肝移植进入了广泛应用的新时期。已成为治疗各种良、恶性终末期肝病的有效手段,彩色多普勒血流显象(CDFI)作为重要的检测手段成为原位肝移植(Orthotopiclivertransplantation,OLT)围手术期的首选影像学检查方法。我院从2001年9月至今完成OLT3例,现将我们对这3例OLT患者的超声检查体会报告如下:1资料与方法第1例为乙型肝炎后肝硬化患者;第2例为乙型肝炎、原发性肝癌合并丙型肝炎患者;第3例为酒精性肝硬化患者,3例均系肝硬化失代偿期并门… 相似文献
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目的:探讨彩色多普勒超声(CDFI)在原位肝移植术后黄疸鉴别诊断中的应用价值。方法:使用彩色多昔勒超声观察18例原位肝移植术后发生黄疸患者的肝脏动静脉血流变化及胆管、肝实质声像图改变,主要观察指标有最大血流速度、时间平均血流速度(TAV)、阻力指数(RI)及胆管内径,并结合临床资料、肝穿刺活检病理结果和内镜逆行胰胆管造影(ERCP)表现等进行综合分析。结果:18例患者于术后6天-5个月发生黄疸,持续时间为12天-1年。其中13例为胆道并发症,5例为胆总管吻合口狭窄,2例为慢性胆管炎,2例为肝内胆管结石,1例为左肝管胆泥形成并霉菌感染,3 例为肝内胆管轻度扩张,其余5例经肝穿刺活检证实为轻度急性排斥反应4例、临界急性排斥反应1例。结论:彩色多普勒超声成像技术对原位肝移植术后黄疸具有重要的鉴别诊断价值,对临床医生判断病情有重要意义。 相似文献
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目的 探讨彩色多普勒超声在活体肝移植供体术中术后的应用价值.方法 应用Mylab30、Sequoia512超声诊断仪对60例活体供肝肝移植供体进行术中、术后超声检查.术中应用超声标记肝中静脉及其粗大属支走行,协助外科医师进行供肝切取;术中切除供肝后,检查残肝血流情况;术后对供体残肝进行超声监测.结果 60例供者在术中超声定位引导下均成功切取肝脏;术中超声发现残肝门静脉狭窄1例(1/60,1.67%);术后超声检查发现胆漏4例(4/60,6.67%)、脾脏增大16例(16/60,26.67%),其中8例(8/16,50%)伴腹水.结论 在活体肝移植供体术中及术后彩色多普勒超声检查具有重要价值. 相似文献
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彩超在减体积肝移植术后流出道梗阻的诊断及介入治疗中的应用 总被引:2,自引:2,他引:0
目的探讨彩色多普勒超声在儿童减体积肝移植术后流出道梗阻的诊断及介入治疗中的应用价值.方法 2例儿童减体积肝移植术后流出道梗阻并发症病例,分析流出道梗阻的彩色多普勒超声表现及介入治疗前后的血流动力学改变.结果例1为肝静脉狭窄,超声表现为管腔直径不足2.5 mm,狭窄长度达15 mm,血流速度115.0 cm/s,同时伴大量腹水、脾脏增大.球囊括张术后血流速度轻度下降,1周后又重新恢复高速血流.支架植入术后血流速度降至正常范围,腹水消失.例2为下腔静脉狭窄,超声表现为下腔静脉肝后段内径明显变细、其直径不足0.3 mm,血流速度增快达200 cm/s以上.结论彩色多普勒超声对减体积肝移植术后流出道梗阻的诊断及监测介入术后血流动力学改变方面具有重要作用. 相似文献
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肝移植术后的血管并发症是导致移植失败的重要原因之一。彩色多普勒超声已成为肝移植术后血管并发症的首选影像学检查方法。本文就其技术在血管并发症中的临床应用方面做一综述。 相似文献
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目的:探讨二维超声对肝移植术后胆道并发症的诊断价值.方法:回顾性分析48例肝移植术后胆道并发症患者的二维超声图像,并与其它影像学检查结果相对比.结果:超声检出胆漏13例,胆管扩张36例,胆汁淤积16例,胆泥形成10例,结石形成13例.术后1个月内发生者37.8%,3个月内发生者68.9%.7例患者出现极其相似的病程,表现为胆管扩张,后扩张胆管内出现胆汁淤积,继而胆泥形成,最后发展至胆管结石.结论:超声在肝移植术后胆道并发症的诊断中有重要应用价值,是首选检查方法. 相似文献
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A G Tzakis R D Gordon L Makowka C O Esquivel S Todo S Iwatsuki T E Starzl 《Radiologic clinics of North America》1987,25(2):289-297
Progress in immunosuppression, surgical techniques, and perioperative care has promoted orthotopic liver transplantation from an experimental procedure to an accepted clinical treatment. Orthotopic liver transplantation, in turn, has changed the treatment of terminal liver disease from care that is largely treatment of symptoms and support to cure, but at the price of major surgery and life-long immunosuppression. This article reviews the current status of liver transplantation as practiced at the University of Pittsburgh. 相似文献
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C. Gazzera G. Isolato S. Stola F. Avogliero A. Ricchiuti G. Gandini 《La Radiologia medica》2010,115(8):1304-1313
Purpose
This paper discusses the role of colour Doppler ultrasound (CDUS) in the midterm follow-up of patients after orthotopic liver transplantation (OLT).Materials and methods
We retrospectively studied 134 patients — 102 men and 32 women, age range 21–68 years — who underwent liver transplantation between May 2006 and April 2007. In the first week after OLT, CDUS examination was performed daily in patients with anastomoses at a high risk of thrombosis, and on the basis of clinical and laboratory findings in other patients. After discharge, follow-up was performed 1, 3, 6 and 12 months after transplantation. Any new parenchymal focal lesion was studied by computed tomography (CT) and, where needed, biopsy.Results
CDUS identified the following complications: 22 biliary (B), nine vascular (V) and seven focal lesions (FL). Sensitivity, specificity, positive and negative predictive values and diagnostic accuracy were, respectively: 79.2%, 97.3%, 86.3%, 95.5%, 94% (B), 100%, 99.2%, 88.9%, 100%, 99.3% (V) and 100%, 96.9%, 42.8%, 100%, 97% (FL). CDUS also showed 16 blood collections and eight suspected biliary collections (four of which were confirmed by percutaneous puncture).Conclusions
CDUS is an essential diagnostic tool in the follow-up of OLT. An early diagnosis of complications can improve graft integrity and patient survival. 相似文献15.
肾性高血压(renal hypertension)由于肾脏性高血压实质性病变和肾血管性病变引起的血压升高。肾动脉狭窄性高血压是可治愈的继发性高血压,其病情进展迅速,常引起难治继发性高血压,因此及早诊断并采取相应的干预措施具有非常重要的临床意义[1~4]。彩色多普勒诊断肾动脉狭窄具有无创、价廉、方便、无对比剂损伤等临床优点,因而在临床上应用越来越广泛[4],本文旨在探讨彩色多普勒超声在肾动脉狭窄的诊断价值。 相似文献
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Color Doppler ultrasound of the normal testis 总被引:10,自引:0,他引:10
Color Doppler ultrasound with point spectral analysis was performed on 30 testes of 15 asymptomatic volunteers. Intratesticular arteries and testicular capsular arteries were imaged in all 30 cases. Waveforms from these vessels were similar and consistently showed a low-impedance pattern with high levels of diastolic flow. This reflects the low vascular resistance of the testis. Supratesticular arteries were also identified in all 30 cases. In addition to the low-impedance-type waveforms from the testicular artery, waveforms obtained in the supratesticular region also originated from the deferential and/or cremasteric arteries. This resulted in some waveforms with high-impedance patterns, reflecting the high vascular resistance of the epididymis and peritesticular tissues. We believe that color Doppler ultrasound is capable of reliably showing the normal testicular arterial anatomy by imaging intraarterial blood flow. Knowledge of the normal color Doppler appearance and waveform characteristics of the testicular artery should aid in diagnosing scrotal conditions that alter blood flow. 相似文献
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目的:比较彩色多普勒超声、磁共振动态增强对乳腺病变的临床诊断价值。方法收集经手术与病理证实的95例同时做过超声与M R的101个乳腺病灶,对其二维声像图及CDFI特点与磁共振动态增强影像学表现,对照病理结果进行回顾性分析。结果彩色多普勒与MR动态增强扫描对乳腺良恶性病变定性诊断准确率分别为:超声良性病变诊断正确率73.3%,恶性病灶诊断正确率87.3%;M R良性病变诊断正确率84.3%,恶性病灶诊断正确率92.7%。95个患者共检出101处病灶,其中乳腺癌67例,占66%;纤维瘤23例,占23%,炎性肉芽肿4例,占4%;分叶状肿瘤2例,占2%;囊腺瘤1例,占1%;乳头状瘤4例,占4%。结论超声检查诊断准确性高,适用于乳腺疾病的常规检查;MR空间分辨力及软组织分辨力高,适用于超声检查难以定性的病变及乳腺癌的术前评估。 相似文献
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目的探讨彩色多普勒超声在移植肾急性排斥反应治疗过程中的监测价值。方法回顾性分析41例急性排斥的移植肾患者治疗前后不同时间点彩色多普勒超声特点及血肌酐水平,对比不同时间点移植肾叶间动脉RI及血肌酐水平的差异,分析治疗前叶间动脉RI与治疗后1个月血肌酐水平的相关性。结果移植肾急性排斥反应发生时及逆转后声像图表现及彩色多普勒超声测值存在差异,治疗后第3天开始彩色多普勒超声图像及血流参数变化与治疗前对比差异有统计学意义(P〈0.05),治疗后第5天开始血肌酐与治疗前对比差异有统计学意义(P〈O.05),治疗前叶间动脉RI与治疗效果具有较好的相关性。结论彩色多普勒超声可用于移植肾急性排斥反应的诊断及治疗效果评估,发生移植肾急性排斥反应时,彩色多普勒超声图像及血流参数变化早于血肌酐变化,治疗前叶间动脉RI与治疗效果具有很好的相关性。 相似文献