16层螺旋CT脑血管造影在脑动脉瘤诊断中的应用

目的 探讨16层螺旋CT脑血管造影对脑动脉瘤的诊断价值.方法 对74例怀疑颅内动脉瘤患者行头颅16层螺旋CT脑血管造影检查,应用多平面重建(MPR)、曲面重建(CPR)、最大密度投影(MIP)、容积显示(VR)及仿真内窥镜(VE)等后处理技术,并对照DSA及手术结果,评估诊断准确性.结果 16层螺旋CT脑血管造影发现动脉瘤65例共77个动脉瘤.其中单发动脉瘤55例,9例为2个动脉瘤,1例为4个动脉瘤:瘤体最小约2.0mm,最大约49mm;瘤颈最小约1.5 mm,最大约8.5 mm.与手术结果对比符合率为94.74%,同DSA对比灵敏度、诊断符合率差异均无统计学意义(P>0.05).结论 16层螺旋CT脑血管造影能清晰显示颅内动脉瘤瘤体的部位及走向.瘤颈、载瘤动脉以及动脉瘤与周围结构的空间关系,诊断脑动脉瘤有较高的准确性,可作为急诊颅内动脉瘤患者的首选检查方法.     

多层螺旋CT冠状动脉成像与冠状动脉造影对照

背景：许多初步研究结果表明，16层螺旋CT对冠状动脉狭窄的显示具有较高的准确性。 目的：通过与冠状动脉造影对比评价多层螺旋CT诊断冠状动脉中、重度狭窄的准确性和局限性。 设计、时间及地点：金标准对照观察的临床诊断实验，于2005-06/2006-03在首都医科大学宣武医院心脏科完成。 对象：选择2005-06/2006-03首都医科大学宣武医院心内科收治的1个月内先后行64层螺旋CT和冠状动脉造影检查的临床诊断或可疑冠状动脉硬化性心脏病患者28例。 方法：采用国际上通用的目测直径法，对选择性冠状动脉造影或多层螺旋CT显示冠状动脉狭窄进行定量评价。分别对28例患者的280个节段进行分析。 主要观察指标：多层螺旋CT冠状动脉成像对冠状动脉狭窄的真阳性、真阴性、假阳性、假阴性以及灵敏度、特异度、准确度、阳性预测值、阴性预测值。 结果：纳入的28例患者全部进入结果分析。依节段计算多层螺旋CT的准确性，其灵敏度、特异度、阳性预测值和阴性预测值分别为46.5%，97.6%，86.8%和84.3%。若去除其中31个冠状动脉节段由于严重钙化而影响诊断的因素，则多层螺旋CT的诊断灵敏度、特异度、阳性预测值和阴性预测分别为66.7%，98.6%，90.3%和93.6%。 结论：多层螺旋CT冠状动脉成像是一种简便易行、安全可靠、风险小的无创性检查，对诊断冠状动脉硬化性心脏病尤其针对筛选冠状动脉硬化性心脏病而言有较好的前景，但也有一定局限性。     

多层螺旋CTA与DSA诊断颅内动脉瘤的应用价值及对比分析

目的探讨多层螺旋CT血管造影(CTA)及数字减影血管造影(DSA)在颅内动脉瘤诊断中的应用价值,对二者进行对比分析。方法回顾性分析经CTA、DSA双重检查并经手术证实的68例颅内动脉瘤患者临床及影像学资料。将CTA和DSA的诊断结果用SPSS13.0统计软件进行统计分析,差异显著性采用χ2检验,比较二者诊断颅内动脉瘤的准确性、敏感性和特异性。结果 CTA诊断的准确性、敏感性、特异性分别为93%、92.31%、98.72%;DSA诊断的准确性、敏感性、特异性分别为95%、94.87%、100%,二者无显著性差异。结论 CTA、DSA是截然不同的两种检查方法,都具有较高的临床应用价值,在诊断颅内动脉瘤方面各有其优势和不足,可以互补。     

CT脑灌注与血管造影在急性脑梗死中的临床应用

目的研究CT脑灌注与血管造影在急性脑梗死中的临床应用价值。方法对34例急性脑梗死患者行CT平扫、CT脑灌注和血管造影检查,观察成像,与对侧健区进行比较,重建血管造影图像,治疗后行CT复查。结果 CT平扫发现同临床症状相对应的病灶比例为76.47%;CT脑灌注显示血流量降低;病变区的脑容量同对侧健区的脑容量差异无统计学意义(P0.05),脑血流量低于对侧健区;对比峰值时间和对比剂平均通过时间病变区均高于对侧健区(P0.05);血管造影显示患者均存在颈内动脉闭塞或狭窄现象。结论对急性脑梗死采用CT脑灌注与血管造影可以准确显示病变区的血管情况,可作为早期诊断的重要依据。     

64层螺旋CT脑灌注联合CT血管造影对颈内动脉狭窄或闭塞的诊断价值

目的探讨64层螺旋CT脑灌注联合CT血管造影对颈内动脉狭窄或闭塞的诊断价值。方法选取因颈内动脉狭窄或闭塞在我院进行治疗的80例患者,对其进行64层螺旋CT脑灌注、CT血管造影扫描。观察64层螺旋CT脑灌注的平均通过时间、对比脑血流量、脑血容量、对比剂峰值时间,观察血管造影后患者的劲内动脉狭窄程度。结果短暂性脑缺血发作、急性脑梗死患者患侧的对比剂峰值时间均明显长于健侧的对比剂峰值时间,差异有统计学意义(P<0.05)。结论采用64层螺旋CT脑灌注联合CT血管造影,能同时诊断颈内动脉狭窄或闭塞的脑部血流灌注及颈动脉狭窄的程度。     

多层螺旋CT诊断大面积脑梗死的应用价值

目的探讨螺旋CT对大面积脑梗死的诊断效果及应用价值。方法对在我院住院治疗的40例大面积脑梗死患者行多层螺旋CT平扫及CT血管造影(CTA),观察其诊断效果。结果 CT平扫初步诊断阳性率为55%,二次CT平扫复查阳性率为100%。CT表现为:22例为血管阻塞引起的大面积梗死,表现为片状低密度影,或表现浮云征、脑回征或假肿瘤征;12例为血栓脱落引起的大面积脑梗死,表现为大片状,低密度影,密度较均匀,边界较清楚,并且阴影沿血管走行;6例为外伤所致脑梗死,表现为在损伤基础上的大片状低密度影,且往往累及灰白质。CT血管造影示大脑前动脉严重狭窄或者闭塞患者7例,大脑中动脉严重狭窄或者闭塞患者18例,两动脉同时闭塞患者5例,颈内动脉末端闭塞2例,病变血管支配的脑实质范围比CT平扫所见梗死范围明显增大。结论多层螺旋CT平扫对大面积脑梗死诊断准确、省时,联合CT血管造影能够清楚显示病变血管狭窄程度及病变位置,为临床治疗提供有利依据,值得推广应用。     

CT血管造影评价静脉血栓栓塞的特征★

目的：介绍多排螺旋CT血管造影诊断静脉血栓栓塞的扫描技术和影像学征象，评价其在静脉血栓栓塞早期诊断中应用价值和优势。 方法：应用计算机检索Medline 1998-01/2007-10与静脉血栓栓塞和肺血栓栓塞的诊断相关的英文文章，检索词“venous thromboembolism，pulmonary thromboembolism，CT angiography”；同时通过手工和计算机检索万方数据库2000-01/ 2007-10相关中文文章，检索词“静脉血栓栓塞，CT血管造影，诊断”。通过检索得到228篇相关文献，纳入24篇完全符合要求的文献。 结果：多排螺旋CT利用多排采集技术，结合高质量的三维重建图像，能清晰地显示肺动脉远端分支，使肺栓塞的诊断进一步达到了亚段水平。薄层螺旋CT诊断肺栓塞的敏感性与肺动脉血管造影相比没有显著差异，其敏感性和特异性都高于肺通气/灌注核素扫描，且在排除急性肺栓塞时，螺旋CT有可能替代核素扫描成为检查的首选。 结论：螺旋CT扫描速度快，图像清晰，不遗漏小病灶。螺旋CT血管造影是静脉血栓栓塞安全、迅速、无创伤的有效诊断方法。     

多层螺旋CT血管造影诊断颅内动脉瘤的临床价值

数字减影血管造影术（DSA）以其极高的空间分辨力，一直作为临床诊断颅内动脉瘤的金标准。但此项技术存在侵袭性，检查费用高且时间长，以及1％的并发症发生率等缺陷。近年来，随着16层螺旋CT检查技术的发展。使多层螺旋CT血管造影（multi-slice CT angiography，MSCTA）的影像质量明显提高，可以通过多平面重建（mutiple plane reconstruction，MPR）、最大密度投影（maximum intensity projection，MIP）、容积透视（volume rendering，VR）和CT仿真内镜（CT virtual endoscopy，CTVE）等重建方法提供二维和三维图像，从而清晰地显示动脉瘤自身的形态及其周围解剖结构。[第一段]     

64层螺旋CT与冠状动脉造影同步评价冠状动脉支架置入后血管再狭窄☆

背景：支架置入后复查冠状动脉造影对判定再狭窄有重要参考价值，而目前其微创性和价格等因素均影响了造影复查率。 目的：以选择性冠状动脉造影为“金标准”，分析64层螺旋CT在冠状动脉支架置入后再狭窄评价中的应用价值。 设计、时间及地点：回顾性病例分析，于2007-03/2008-07在东南大学附属中大医院完成。 对象：选择门诊复查和住院的冠心病患者22例，于支架置入后同步进行64层螺旋CT冠状动脉成像和选择性冠状动脉造影检查。男12例，女10例；平均年龄（68.0±9.6）岁。 方法：采用64层螺旋CT对22例冠心病患者的38个冠状动脉支架进行检查和重建分析，对支架的再狭窄情况进行评价，与“金标准”选择性冠状动脉造影结果进行对照。 主要观察指标：64层螺旋CT图像和选择性冠状动脉造影评价血管再狭窄情况。 结果：64层螺旋CT可以清晰的显示冠状动脉主干及其主要分支，对置入的支架均能清楚显示。在置入的38枚支架中，CT显示32枚支架保持通畅，并与常规“金标准”冠状动脉造影结果相吻合；另有6枚支架64层CT显示存在不同程度的再狭窄。与选择性冠脉造影结果对照后发现其中有4枚互相吻合，而另外2枚再狭窄未得到选择性冠状动脉造影的证实。64层CT诊断支架再狭窄的敏感性和特异性分别为100%和94.18%。 结论：64层螺旋CT在评估冠心病支架置入后的再狭窄问题上有很高准确性，能较准确地区分支架开通和闭塞。     

脊髓造影螺旋CT重建颈椎病仿真解剖模型的意义☆

背景：随着螺旋CT及计算机图像后处理技术的进步，医学仿真影像学在复杂颈椎病的诊断与治疗中获得了良好的临床应用效果。 目的：观察脊髓造影螺旋CT扫描多平面重建及三维重建颈椎影像仿真解剖模型的效果及其临床意义。 设计、时间及地点：计算机三维重建，金标准对比实验，于2001-01/2006-01在苏州大学附属第二医院完成。 对象：接受手术治疗的20例病情复杂的颈椎病患者。 方法：对20例患者进行颈脊髓造影螺旋CT薄层扫描，分别行多平面重建和三维重建，建立颈椎CT仿真解剖模型。将扫描及其重建结果用于术前病情评估、模拟手术，并以手术直视所见为金标准评价仿真解剖模型的准确性和效能。 主要观察指标：仿真解剖模型的准确性和效能。 结果：仿真解剖模型可同步显示骨性椎管和膜性椎管，为术前评估和模拟手术提供了颈椎全面、细微骨性解剖结构和硬膜囊、脊髓、神经根袖等软组织受压等解剖信息，与患者实际解剖相符合。 结论：仿真解剖模型直观、逼真，准确再现了颈椎解剖，可应用于综合评估颈椎病病情并模拟手术。     

Adults and children with headache: evidence-based diagnostic evaluation

Headache represents one of the most common complaints in the outpatient and emergency room setting [1]. Most causes of headache are benign and do not require emergent imaging or intervention. The authors' review of the diagnostic tests does not offer absolute indications for neuroimaging because most of the evidence is based on studies that are not randomized controlled trials. Imaging guidelines for adults and children, however, have emerged based on the available level 2 and 3 literature. CT imaging remains the initial test of choice for new-onset headache in adults and headache suggestive of SAH. Most of the available literature also recommends performing lumbar puncture when CT is equivocal in ruling out SAH [1]. The sensitivity of MR imaging appears to be less than CT for SAH [1]. Newer MR imaging techniques need to be tested and developed to determine if they have higher sensitivity than CT or lumbar puncture in the detection of SAH. In adults with suspected brain metastatic disease, contrast-enhanced MR imaging is the imaging study of choice [38,39]. Contrast-enhanced MR imaging is the examination of choice for brain metastatic lesions less than 2 cm [39]. CT angiography and MR angiography have sensitivities greater than 85% for brain aneurysms larger than 5 mm [43]. If clinically warranted, aneurysms smaller than 5 mm may require digitally subtracted angiography because of the low sensitivity of MR and CT angiography. In children, the choice of diagnostic test strategy depends on the risk group. In high-risk patients, MR imaging is the test of choice whereas in low-risk patients, close clinical observation with periodic reassessment is the best strategy [44]. Clinical diagnosis will always play a key role in the evaluation of headache disorders; however, for the small subset of patients who present with headache secondary to an intracranial space-occupying lesion, bleeding, or SAH, making the diagnosis is crucial to decreasing morbidity and mortality. CT, MR imaging, and lumbar puncture play important roles in the assessment of headache disorders, but their future roles will continue to evolve as the technology becomes more sophisticated and robust, and physicians become more expert with their use [1].     

CT中耳仿真内窥镜成像对中耳结构空间解剖关系的显示价值

背景：中耳结构复杂、细微,位置深而隐匿。CT仿真内窥镜成像可利用螺旋CT容积扫描数据重建出空腔器官内表面的立体图像,类似纤维内镜所见。 目的：验证64排螺旋CT中耳仿真内窥镜对中耳正常结构的显示能力以及在病变中耳中的临床应用价值。 设计、时间及地点：验证性对比观察,于2005-10/2006-03在中山大学附属第一医院放射科完成。 对象：选择33例(66耳)疑有中耳疾病行双耳螺旋CT检查患者,其中正常35耳;病变31耳包括慢性化脓性中耳炎24耳,慢性化脓性中耳炎乳突根治术后复发2耳、中耳癌2耳、外耳道异物肉芽肿1耳及颞骨骨折2耳。 方法：行颞骨64排螺旋CT容积扫描,软组织算法密集重建后,利用Navigator软件行中耳CT仿真内窥镜成像。所有CT仿真内窥镜成像均与常规二维CT图像及手术对照。 主要观察指标：观察的主要结构包括各听小骨及其间的关节、上中下鼓室、鼓窦及外耳道、鼓室各壁结构、面隐窝、鼓室天盖、锤骨前、上韧带、砧骨后韧带及后鼓室的结构。 结果：100%的CT仿真内窥镜图像可清晰显示正常中耳大部分听小骨及鼓室各壁结构,68.6%(24/35)及74.3%(26/35)的CT仿真内窥镜图像可分别清晰显示镫骨前、后脚,而且CT仿真内窥镜图像可清晰显示后鼓室重要解剖结构。慢性化脓性中耳炎病例中,CT仿真内窥镜显示锤骨柄、砧骨长脚骨质破坏与手术所见的符合率为91.7%(22/24),锤骨头、砧骨短脚、镫骨脚骨质骨质破坏的符合率分别为95.8%(23/24),100%(24/24)及87.5%(21/24);1耳中耳癌中CT仿真内窥镜可清晰、立体显示鼓室盖、鼓岬及外半规管的骨质破坏;1耳颞骨骨折中CT仿真内窥镜可清晰显示锤砧关节脱位。中耳CT仿真内窥镜成像平均耗时约10 min。 结论：64排螺旋CT中耳CT仿真内窥镜可以清晰显示中耳的正常解剖细节,对病变中耳骨质破坏显示的符合率较高,且CT仿真内窥镜耗时不长,可以临床常规使用。     

The Predictive Accuracy of the Delayed Spot Sign for Haematoma Expansion in Spontaneous Supratentorial Intracerebral Haemorrhage: A Systematic Review and Meta-Analysis

Previous studies have shown that spot signs on imaging modalities such as CT perfusion, delayed phase CTA or post contrast CT imaging reportedly have greater ability to predict haematoma expansion (HE) than the traditional CT angiography spot sign. We performed a systematic review and meta-analysis of the diagnostic accuracy of the spot sign on delayed imaging modalities in predicting haematoma expansion.Pubmed, Excerpta Medica Database, and the Cochrane library were searched on the 11 November 2019. The search strategy utilised the following terms: CT angiography OR post contrast CT OR CT perfusion OR CT AND intracerebral haemorrhage (or synonyms) AND spot sign OR delayed spot sign OR dynamic spot sign. The area under the summary of receiver operating curves for diagnostic accuracy of delayed spot sign in predicting HE was calculated using bivariate random effects meta-analysis.501 articles were identified, with 10 meeting inclusion criteria. The studies included 711 patients overall, with 272 (38%) demonstrating a spot sign. The presence of a delayed spot sign was associated with HE with a diagnostic odds ratio of 25.4 (12.7-50.9). Pooled sensitivity was 0.81 (0.72-0.88), with a pooled specificity of 0.82 (0.76-0.88). Pooled positive likelihood ratio was 4.30, with a pooled negative likelihood ratio of 0.26. The area under the receiver operating curve (AUC) was 0.88.The delayed spot sign has greater diagnostic accuracy in predicting haematoma expansion than the traditional CT angiography spot sign. Further research could determine the delayed imaging technique that has the greatest diagnostic accuracy.     

Computed tomography in the diagnosis of malignant brain tumours: do all patients require biopsy?

A proportion of patients with computed tomographic (CT) scan appearances of malignant brain tumour undergo conservative management, despite the absence of histological confirmation of the diagnosis. Concern that this policy risked misdiagnosing a benign tumour prompted us to examine the accuracy of CT scanning in diagnosing malignant lesions. The study was designed to determine whether within a group of 300 patients with intracerebral mass lesions of known pathology, two sub-groups existed: one with appearances so specific for malignant glioma that biopsy was unnecessary, and the other in which the appearances were characteristic of malignancy, though not specific for glioma. Three neuroradiologists independently reviewed the CT scans, together with brief clinical details. When diagnosing malignant tumours, all made errors: nine benign lesions were considered to be malignant. When diagnosing malignant glioma, one neuroradiologist made errors, but the other two adopted a more cautious approach and were accurate. The restricted a "certain" diagnosis to about one in five scans considered to show malignant tumour. Those diagnosed specifically as malignant glioma were intrinsic, irregular, mixed density lesions, exhibiting variable enhancement and infiltrating the peri-ventricular tissues, especially the corpus callosum. Using these criteria, they could correctly identify a small proportion of patients with malignant gliomas. In all other patients, biopsy remains the only means of obtaining a definitive diagnosis.     

What is the most sensitive non-invasive imaging strategy for the diagnosis of intracranial aneurysms?

OBJECTIVES: To determine whether combining non-invasive tests for intracranial aneurysms together would significantly improve aneurysm detection over individual tests. METHODS: 114 patients undergoing intra-arterial digital subtraction angiography to confirm or exclude an intracranial aneurysm were also examined by CT angiography, MR angiography, and transcranial power Doppler ultrasound. The reviewers and ultrasonographers were blinded to the angiogram result, other imaging results and all clinical information. RESULTS: The combination of non-invasive tests did improve diagnostic performance on a per patient basis. The combination of power Doppler and CT angiography had the greatest sensitivity for aneurysm detection (0.83; 05% confidence interval (95% CI) 0.66-0.93) and the level of agreement for this strategy with the reference angiographic standard was excellent (kappa 0.84; 95% CI 0.72-0.95). The improvement in sensitivity of adding power Doppler to CT angiography was not significant (p=0.55) but the improvement in the level of agreement with the reference standard was substantial. However, even the most sensitive combination strategy performed poorly in the detection of small (3-5 mm) and very small (<3 mm) aneurysms with a sensitivity of 0.43 (95% CI 0.23-0.66) and 0.00 (95% CI 0.00-0.31) respectively. CONCLUSIONS: The addition of transcranial power Doppler ultrasound to either CT angiography or MR angiography does improve diagnostic performance on a per patient basis but aneurysms of 5 mm or smaller can still not be reliably identified by current standard clinical non-invasive imaging modalities.     

腔隙性梗死的影像学评估对照研究

目的对照研究CT与磁共振在腔隙性梗死诊断中的临床意义。方法选取安阳市肿瘤医院2013-02—2015-07收治的腔隙性梗死患者80例,所有患者行CT与磁共振检查,对诊断结果进行分析对比。结果病理检查检出病灶385例,磁共振检查共检出病灶360个(93.5%),CT检测出153个(39.7%),病灶位置包括丘脑、小脑、颞叶、基底节、额叶、枕叶、顶叶、脑干,磁共振检查病灶检出率明显高于CT(P0.05);两种检测方法的检出率对比差异有统计学意义(P0.05)。两种检查方法病灶大小对比差异有统计学意义(χ2=8.134,P0.05);两种检查方法检查时间、病灶大小、检查费用对比差异有统计学意义(P0.05);磁共振检查主要呈小片斑块状,T1、T2长信号,DWI加深,T2FLAIR高信号,CT检查影像主要呈低密度小片状、斑点状显影。结论 CT与磁共振均可用于腔隙性梗死诊断,但磁共振早期诊断价值以及病灶检出率明显优于CT检查,能够明确反映病灶的位置、大小及数量,便于后期及时有效治疗,值得在临床实践中推广应用。     

轻型弥漫性轴索损伤的早期诊治

目的探讨轻型弥漫性轴索损伤（DAI）的临床特征与诊治方法。方法回顾性分析10例轻型DAI患者的临床资料。结果10例患者均有昏迷史,昏迷时间10min～6h。头颅cT检查结果示7例未见异常,2例头皮血肿,1例少量蛛网膜下腔出血,未见脑实质内出血和颅内血肿。伤后24h内MRI检查结果示10例均发现2~6mm大小的脑内损伤灶,每例1-5个,平均3．2个。出院后10例患者随访1~5年,无死亡和严重残疾病例;8例遗留不适症状;2例恢复正常,无不适症状。10例患者GOS评分均为5分。结论头部MRI诊断轻型DAI敏感性优于头部CT;加强认识可以早期诊断和治疗,多数患者预后良好。     

Orbital cavernous hemangioma: role of imaging

CT and MR imaging are particularly important in the diagnostic investigation of patients with vascular disorders of the orbit. The improved image quality of CT and MR imaging, along with dynamic CT angiography, MR angiography, MR venography, and multiphase dynamic contrast CT/MR imaging, has proven useful to delineate as well as differentiate various orbital vascular lesions. This article presents the current classification of orbital vascular disorders and describes the CT/MR imaging characteristics of orbital cavernous hemangiomas and simulating lesions.     

Benign odontogenic tumors of the mandible and maxilla

Benign odontogenic tumors are characterized by imaging findings of expansile growth and well-defined margins with smooth borders, and their appearance is very similar to that of odontogenic and nonodontogenic cysts. From the viewpoint of diagnostic imaging of odontogenic tumors, teeth are designed differently according to their origin from the apex or crown. Therefore, for differential diagnosis, it is necessary to select diagnostic methods that make it possible to evaluate these findings in detail. Intraoral and panoramic radiography are highly effective in examining the relationship between teeth and lesions, especially the vertical relationship. When a lesion is suspected in the mandible or maxilla on CT, MR imaging, or nuclear medicine, these procedures must be performed as supplementary imaging techniques. CT demonstrates well the degree of bone resorption, osteosclerosis, cortical bone swelling, destruction, and calcification. MR imaging is effective in differentiating between tumors and cysts, evaluating the infiltration of malignant tumors in the jawbone and surrounding soft tissue, and detecting bone marrow changes of the jaw. Differentiation between tumors and cysts must be achieved by contrast-enhanced studies. Combining plain radiography with advanced imaging techniques, including CT and MR imaging, can improve the accuracy of diagnosing odontogenic tumors.     

螺旋CT三维成像评估活体供肾血管

背景：术前供肾血管的影像学评估对选择合适供肾及决定手术方式至关重要。 目的：评估16层螺旋CT血管显影对活体供肾血管的显示水平。 方法：术前对59例活体供肾者进行CT血管显影检查,三维重建肾脏动脉显像,由放射科医师评估血管情况,并与术中描述的血管情况对比。分析CT血管显影检查肾脏血管的敏感性和准确度。 结果与结论：螺旋CT血管显影检查肾动脉总的敏感性和准确度分别为96.6% ,90.5%。50例供肾为单支动脉,螺旋CT血管显影诊断的敏感性和准确度分别为96.1%,92.9%。在6例有两支肾动脉供肾中,螺旋CT血管显影敏感性和准确度均下降为83.3%。3例供肾有3支肾动脉,螺旋CT血管显影的敏感性和准确度为66.7%。螺旋CT血管显影对多支肾动脉总的诊断准确度为77.7%。说明无创、立体直观的螺旋CT血管显影检查可以准确地预测90.5%以上供肾动脉血管情况,是供肾术前血管评估的较好手段。