DSA与三维螺旋CT血管造影对颅内动脉瘤诊断准确率分析

目的探讨数字减影血管造影(DSA)与三维螺旋CT血管造影(3D-CTA)对颅内动脉瘤诊断准确率。方法颅内动脉瘤患者43例,入院后均分别行DSA及3D-CTA检查。以手术病理检查结果为金标准,比较3D-CTA和DSA诊断准确率。结果3D-CTA对颅内动脉瘤诊断准确率与DSA相比无显著差异(P >0.05)。结论行3D-CTA对颅内动脉瘤诊断准确率高,避免延误患者最佳治疗时机。     

256层螺旋CT三维血管成像与三维DSA诊断颅内动脉瘤的对比分析

目的对比256层螺旋CT三维血管成像（3D．CTA）与三维数字减影血管造影（3D-DSA）诊断颅内动脉瘤的价值。方法回顾性分析46例就诊时临床表现疑似为蛛网膜下腔出血（SAH）或MR血管成像检查怀疑为颅内动脉瘤的患者,全部行头颈联合3D-CTA及3D-DSA检查,两名影像科医师使用盲法独立判读所有患者的3D-CTA图像,3D．DSA的图像由1名从事血管介入的神经科医师和1名介入影像科医师共同判读确定。以3D-DSA检出动脉瘤的数目为标准,评估3D-CTA的敏感性、特异性以及两名3D-CTA阅片者、3D-CTA与3D-DSA技术之间,在动脉瘤检出数量的一致性;测量动脉瘤瘤体最大径,以3D．DSA图像测量值为标准,比较两名3D-CTA阅片者用3D．CTA容积重建图像测量瘤体最大径的差异以及3D-CTA容积重建与3D-DSA图像在瘤体最大径测量上的差异。结果3D-DSA对46例患者中的37例共检出49个动脉瘤,其余9例未被发现动脉瘤。①3D-CTA在检出动脉瘤数目方面的敏感性为91．8％-93．9％,特异性为77．8-100％。②对〈3mm的动脉瘤,3D-CTA的敏感性均为83．3％,特异性为77．8％-100％。③从动脉瘤的检出率方面,3D-CTA阅片者以及3D．CTA与3D．DSA技术之间一致性均较高（分别为K=0．730,K=0．686-0．777）。④两名医师采用3D-CTA法测量的瘤体最大径与3D-DSA法的测量值,以及两名医师的3D-CTA测量值之间均存在高度相关性,均r值=0．996,均P值〈0．001。结论256层螺旋CT3D-CTA对动脉瘤检出的敏感性和特异性均较高,3D-CTA对动脉瘤的检出率和瘤体最大径测量与3D-DSA一致性较高,可以作为疑似动脉瘤患者的首选筛查方法。但其对瘤体最大径〈3mm的动脉瘤仍有假阴性的表现。在高度怀疑动脉瘤而3D-CTA结果显示为阴性时,仍需进一步行3D-DSA检查。     

3D-CTA、3D-DSA评估脑动脉瘤患者行显微外科夹闭术的治疗效果

目的 以三维CT血管成像（3D-CTA）、三维脑血管造影（3D-DSA）检查评估脑动脉瘤患者行显微外科夹闭术的效果,为合理选择脑动脉瘤显微外科夹闭后的评估方法提供依据.方法 对25例行显微外科夹闭术后的脑动脉瘤患者行3D-CTA、3D-DSA复查,分别对有无动脉瘤夹闭不全、动脉瘤颈残留/成角、载瘤动脉狭窄、载瘤动脉闭塞和动脉瘤夹滑脱移位5种影像学特征进行分析、赋值和计分,并进行统计分析.结果 25例患者中,术后3D-CTA复查显示载瘤动脉狭窄2例,未见动脉瘤夹闭不全、动脉瘤颈残留/成角、载瘤动脉闭塞和动脉瘤夹滑脱移位;3D-DSA复查显示动脉瘤夹闭不全1例、动脉瘤颈残留/成角1例、载瘤动脉狭窄2例,未见载瘤动脉闭塞和动脉瘤夹滑脱移位.两种检查方法的评分比较无统计学差异（P＞0.05）.结论 3D-CTA对显微外科夹闭术后的总体评价效果与3D-DSA具有可比性,但其对动脉瘤夹闭不全和动脉瘤颈残留/成角的显示不及3D-DSA.     

三维计算机断层血管造影在诊断老年术后残余或复发性动脉瘤中的价值

目的比较三维计算机断层血管造影(3D-CTA)与当前的"金标准"数字减影造影术(DSA)在术后残余或复发性动脉瘤诊断中各自准确性。方法对56例行开颅动脉瘤夹闭术的老年患者进行3D-CTA检查,用ROC曲线来比较3D-CTA与DSA的诊断性能。结果 56例老年患者中有69个动脉瘤被发现,DSA检测到8个残余脑动脉瘤,3D-CTA检测到7个残余脑动脉瘤。3D-CTA的敏感性和特异性为81.25%和97.92%,准确度为95.54%。ROC曲线下面积(AUC)是0.928,ROC分析发现3D-CTA诊断性能好。结论研究认为3D-CTA可作为老年病人术后残余动脉瘤检测的替代方式。3D-CTA的敏感性和特异性能够十分接近传统DSA检测方法。3D-CTA作为一种性价比高、非侵入性的方法,非常适用于老年病人,对初始和长期评估残余动脉瘤可以替代DSA的检出手段。     

三维CT血管造影在前交通支动脉瘤诊治中的应用

目的探讨三维CT血管造影（3D—CTA）在前交通支动脉瘤的诊断与治疗中的临床意义。方法对85例手术治疗的前交通支动脉瘤进行回顾性研究,其中术前直接由数字减影血管造影（DSA）检查确诊并手术26例,术前直接由3D-CTA检查确诊并手术51例,8例术前同时行DSA＋3D-CTA检查并手术。67例术后复查3D．CTA,9例术后复查DSA。结果术前首先行3D—CTA检查的57例中,51例确诊并均经手术证实,6例3D-CTA检查结果阴性而补充DSA检查结果阳性。术前首先行DSA检查的28例中,26例确诊并均经手术证实,2例DSA检查结果阴性而补充3D-CTA检查结果阳性,所有动脉瘤均经显微手术夹闭,翼点入路73例,纵裂入路12例,疗效满意。结论3D-CTA可以作为前交通支动脉瘤的首选筛查手段,不但为手术入路的选择提供帮助,还可以作为术后常规复查手段。     

3D-CTA对颅内动脉瘤手术治疗的应用价值

为探讨三维CT血管造影技术（3D-CTA）在颅内动脉瘤手术中的应用价值,我们对手术证实的颅内动脉瘤破裂致蛛网膜下腔出血（SAH）患者134例的3D-CTA资料进行了分析。     

吲哚菁绿荧光血管造影在前交通动脉瘤夹闭术中的应用

目的探讨吲哚菁绿荧光血管造影在前交通动脉瘤夹闭术中的应用价值。方法回顾性分析开颅手术治疗19例前交通动脉瘤病例。术中采用吲哚菁绿荧光造影,评估动脉瘤夹闭情况以及载瘤动脉的血供情况,根据造影结果必要时调整动脉瘤夹。术后复查3D—CTA判断动脉瘤夹闭情况。结果19例前交通动脉瘤夹闭ICG荧光血管造影证实动脉瘤颈残留1例,误夹穿通血管1例,经重新调整动脉瘤夹位置后,均再次行荧光血管造影,证实动脉瘤颈夹闭满意,载瘤动脉及分支血管通畅,余17例ICG造影示夹闭满意。术后3D-CTA检查动脉瘤夹闭完全,载瘤动脉通畅,与术中ICG造影显像一致。结论术中吲哚菁绿血管造影简便易行,具有理想的空间和时间分辨率,具有可重复、安全性高等特点,对术中判断动脉瘤颈是否夹闭完全、载瘤动脉是否狭窄,远端分支是否通畅有重要参考价值,增加了手术安全性。     

三维螺旋CT血管造影在颅内巨大脑膜瘤手术中的应用

目的探讨三维螺旋CT血管造影（3D-CTA）对颅内巨大脑膜瘤手术的指导作用。方法 27例颅内巨大脑膜瘤患者术前行3D-CTA,观察肿瘤及其相邻血管、血窦、骨性解剖标志,据此制定手术入路、确定肿瘤切除范围及需要保护的毗邻血管神经。结果 3D-CTA清晰显示了肿瘤位置、大小、生长侵袭方向及其与相邻血管、骨性解剖标志的空间关系,据此制定手术方案,肿瘤全切除24例、次全切除2例、部分切除1例,术中出血平均175 ml,3例术后轻偏瘫,1例瘤腔内出血2,3例恢复良好。结论在颅内巨大脑膜瘤切除术前行3D-CTA,可清晰显示肿瘤位置、大小、生长侵袭方向及其与相邻血管、骨性解剖标志的空间关系,有利于手术方案的制定,提高肿瘤的切除率,减少术中出血及医源性神经损伤。     

CTA与2D DSA、3D DSA在颅内动脉瘤检出率和动脉瘤颈可见度中的应用价值

目的探究三维CT血管造影(CTA)与2D数字减影血管造影(DSA)、3D DSA在颅内动脉瘤检出率和动脉瘤颈可见度中的应用价值。方法选取老年蛛网膜下腔出血患者50例,均接受CTA与2D DSA、3D DSA检测,对其检查的结果进行回顾性分析。结果 CTA、3D DSA诊断的灵敏度、特异度均明显优于2D DSA(P<0.05);CTA、3D DSA的误诊率均明显低于2D DSA(P<0.05);2D DSA在颅内动脉瘤颈可见度与载瘤血管的关系检查中的应用价值明显低于CTA,3D DSA明显优于CTA(P<0.05)。结论2D DSA在颅内动脉瘤检出率方面与CTA相比,基本无差异,但是其在瘤径、瘤形态、与载瘤血管的关系方面,CTA的应用价值优于2D DSA。3D DSA在颅内动脉瘤检出率、瘤径、瘤形态、与载瘤血管之间的关系方面与CTA相比,具有一定的优势。     

联合应用三维计算机断层和数字减影血管造影诊治颅内动脉瘤

目的 探讨联合应用三维计算机断层血管造影(CTA)和数字减影血管造影(DSA)诊治颅内动脉瘤的效果。方法 对60例怀疑颅内动脉瘤的患者行CTA和DSA检查，其中1例仅行CTA检查。所有病例再行CTA、DSA检查，将所有检查结果及术中发现做比较。结果 (1)CTA发现55例共56个动脉瘤，9例宽颈，1例多发动脉瘤；DSA发现52例共56个动脉瘤，9例宽颈，4例多发动脉瘤；共治疗53例。(2)9例宽颈动脉瘤，4例手术(2例分别球囊、支架辅助栓塞)，4例多发动脉瘤均行手术夹闭，1例载瘤动脉闭塞；43例窄颈动脉瘤，31例电解可脱微弹簧圈(GDC)栓塞，9例夹闭，3例转院。(3)2例仅依据CTA资料行急诊手术，术中发现与CTA检查结果相符。结论 CTA和DSA联合检查有助于颅内动脉瘤的诊断，对治疗方案的选择有重要的指导意义。     

16层螺旋CT血管造影在颅内血管性病变诊断中的应用

目的探讨16层螺旋CT血管造影在颅内血管性病变的诊断价值。方法搜集我院2008年3月至2009年5月期间,应用16层螺旋CT血管造影并进行容积重建（VR）、多平面重建（MPR）、最大密度投影（MIP）显示脑血管,诊断颅内血管性病变,评价其诊断病变的价值。结果28例中诊断出颅内动脉瘤3例,动脉狭窄25例。16层螺旋CT血管造影可清楚显示病变的位置、大小、形态以及与周围血管和颅骨的关系。结论16层螺旋CT血管造影对颅内血管性病变具有无创、快捷、经济、安全、准确性较高等特点,在诊断颅内血管性病变的应用中与DSA检查互补也可得到更完整的信息,可作为临床颅内血管疾病的有效检查方法之一。     

Three-dimensional CT angiography with volume rendering for the dignosis of multiple intracranial aneurysms

Objective: To evaluate the importance of 3D-CTA with volume rendering for the diagnosis of multiple intracranial aneurysms. Methods: Axial source images were obtained by helical CT scanning and reconstruction of 3D-CTA images was done by volume rendering technique in conjunction with muhiplanar reformation. Results: In the past one year, there were 10 patients diagnosed as having multiple intracranial aneurysms by 3D-CTA and altogether 24 aneurysms were visualized, including 10 small aneurysms (≤5mm. Three-dlmenslonal CT angiography with volume rendering demonstrated aneurysms very well and provided useful information concerning the site, shape, size and spatial relationship with the surrounding vessels and bone anatomy. Conclusion: Three-dimensional CT angiography with volume rendering is a quick, reliable, and relatively noninvasive method for diagnosing multiple intracranial aneurysms. It delineates detailed aneurysmal morphology, and provides useful information for planning microsurgical approaches.     

A successful case of varix of the left gastroepiploic vein preoperatively diagnosed by 3D-CT angiography and resected by laparoscopy: A case report

Introduction:Gastric varices can be present in up to 20% of patients with portal hypertension. However, a varix of the left gastroepiploic vein (LGV) is extremely rare. Surgery is required if bleeding occurs; thus, precise diagnosis is crucial. We present a successful case of preoperative diagnosis intraabdominal varix of the LGV using three-dimensional-computed tomography angiography (3D-CTA) followed by laparoscopic resection. This is the first report of a case with variant LGV. Our study demonstrates the efficacies of 3D-CTA and laparoscopic surgery for the diagnosis and safe resection of the intraabdominal varix, respectively.Patient concerns:A 74-year-old woman was referred to our department with a tumor in the abdominal cavity. On physical examination, no lumps were palpable in the upper abdomen.Diagnosis:The enhanced CT was revealed that the tumor was not enhanced in the early phase, but in the equilibrium phase. Moreover, 3D-CTA clearly revealed that the tumor was being supplied by the LGV. Thus, it was diagnosed as a variant of the LGV.Interventions:Surgical resection was performed laparoscopically as per the guidance of preoperative 3D-CTA findings. During surgery, a dark tumor was found along the gastroepiploic vessels, supplied by the LGV. The tumor was resected safely based on the preoperative information.Outcomes:Histopathological examination of the tumor showed accumulation of various vessels, but no malignant cells. Therefore, we made a final diagnosis of the tumor as an LGV varix. For follow-up, an annual CT examination was performed and after 3 years postoperation, no recurrence was observed.Conclusions:In the present case, we have achieved a successful preoperative diagnosis using 3D-CTA, and resection was safely accomplished using laparoscopy guided by preoperative anatomical information. This is the first report of an LGV variant. Appropriate management is crucial because bleeding is a catastrophic event. Therefore, imaging procedures such as 3D-CTA for diagnosis, followed by safe resection by laparoscopic surgery, are effective tools for the treatment of epiploic vein varices.     

三维CT血管成像在颅内动静脉畸形诊治中的价值

目的探讨三维CT脑血管成像（CTA）在颅内动静脉畸形（AVM）诊治中的价值。方法采用8排螺旋CT及静脉注射非离子型对比剂进行头部螺旋容积扫描,分析23例AVM的CT平扫、增强的影像表现,利用血管生成及图像融合技术对病变进行容积重建。依据CTA检查结果,对15例颅内AVM的患者进行手术病灶切除。通过手术所见,评价三维CTA对AVM的诊断和手术治疗的指导价值。结果行CTA检查发现23例25处AVM,手术切除AVM病灶15处。①手术中发现AVM的位置与三维CTA检查结果完全一致,符合率为100％。②三维CTA对供血动脉显示率为91．9％（34／37）,其中3例因供血动脉纤细、走行弯曲显示不清;引流静脉的显示率为77．8％,其中4例（6支）引流静脉因弯曲、血管团及供血动脉重叠,显示不清。18例引流静脉及所导入的静脉窦同时显影。③三维CTA检测15处畸形血管团平均累及范围为（13．75±0．48）cm^2;术中测量为（13．51±0．52）cm^2,CTA与手术结果比较,差异无统计学意义（P〉0．05）。结论多排螺旋CT血管成像技术可清晰完整地显示AVM的准确位置、畸形血管团、病灶范围、供血动脉、引流静脉全程及邻近组织的三维影像,能够提供手术所需的重要信息。     

三维CT血管造影与冠状动脉造影图像实时融合技术在冠状动脉慢性闭塞病变介入治疗中的应用:1例报道

本文回顾了我科应用三维冠脉CT血管造影(CTA)与冠状动脉造影(CAG)图像实时融合技术指导右冠状动脉慢性闭塞病变介入治疗的患者1例。该患者因"不稳定型心绞痛"入院,CAG示:前降支中段狭窄95%、前降支远端70%、回旋支近中段50%~90%,右冠近段弥漫狭窄最重85%,右冠中段闭塞。患者冠脉CTA明确右冠脉慢性闭塞病变特征,并预测慢性闭塞病变开通难易程度。同时,我们采用三维CTA与CAG图像融合技术,实时指导慢性闭塞开通,并且帮助明确球囊及支架的位置。同时运用微导管、对侧造影验证三维CTA与CAG图像融合指导的效果。     

Application of 3D-computed tomography angiography technology in large meningioma resection

ObjectiveTo discuss the role of 3D-computed tomography angiography (3D-CTA) technology in reducing injuries of large meningioma surgery.Methods3D-CTA preoperative examinations were done in 473 patients with large meningioma (simulated group). The images were analyzed by 3D post-processing workstation. By observing the major intracranial blood vessels, venous sinus, and the compression and invasion pattern in the nerve region, assessing risk level of the surgery, simulating the surgical procedures, the surgical removal plan, surgical routes and tumor blood-supplying artery embolisation plan were performed. Two hundred and fifty seven large meningioma patients who didn't underwent 3D-CTA preoperative examination served as control group. The incidence of postoperative complications, intraoperative blood transfusion and the operation time were compared between these two groups.ResultsCompared with the control group, the Simpson's grade I and II resection rate was 80.3% (380/473), similar with that of the control (81.3%, 209/257). The incidence of postoperative complications in 3D-CTA simulated group was 37.0% which was significantly lower than that (48.2%) of the control (P<0.01). The intraoperative blood supply for simulated group and the control was (523.4±208.1) mL and (592.0±263.3) mL, respectively, with significant difference between two groups (P<0.01). And the operation time [(314.8±106.3)] min was significantly lower in simulated group than that in the control [(358.4±147.9) min] (P<0.01).ConclusionApplication of 3D-CTA imaging technology in risk level assessment before large-scaled meningioma resection could assist in the rational planning of tumor resectin, surgical routes, and is helpful in reducing injuries and complications and enhancing the prognosis of the patients.     

A case of polyarteritis nodosa with lesions of the superior mesenteric artery illustrating the diagnostic usefulness of three-dimensional computed tomographic angiography

A 40-year-old Japanese man who developed upper abdominal pain, weight loss, and hypertension was diagnosed as suffering with polyarteritis nodosa (PAN) with lesions of the superior mesenteric artery (SMA). Three-dimensional computed tomographic angiography (3D-CTA) and conventional angiography revealed smooth segmental luminal narrowing of the branches of the SMA. In addition, an enhanced abdominal CT scan demonstrated diffuse thickening of the wall of the affected SMA. Treatment with high-dose corticosteroids resulted in immediate improvement of the abdominal manifestations and normalized the serum C-reactive protein levels. Furthermore, the subsequent enhanced CT and 3D-CTA revealed improvement of the wall thickening and luminal narrowing of the SMA and its branches during the treatment period. In addition to possessing the diagnostic usefulness of conventional angiography, 3D-CTA is also less invasive and facilitates the prompt and accurate diagnosis of PAN. Furthermore, thickening of the wall of medium-sized arteries evidenced by enhanced CT scan may also support a diagnosis of PAN.     

Three-dimensional computed tomography angiography of coronary artery bypass graft with electron beam tomography]

OBJECTIVES: Assessment of coronary artery bypass graft patency by three-dimensional reconstructed computed tomography angiography (3D-CTA) derived from electrocardiography-gated contrast-enhanced electron beam tomography (EBT) was evaluated. METHODS: Thirty-nine patients with 99 grafts (45 arterial grafts and 54 venous grafts) underwent 3D-CTA and selective coronary angiography within a 3-week interval. 3D-CTA images of the coronary bypass grafts were compared with the coronary angiography images used as the control. RESULTS: 3D-CTA defined 42 of 44 arterial grafts as patent (sensitivity: 95%), all 47 venous grafts as patent (sensitivity: 100%) and all 7 venous grafts as occlusive (specificity: 100%). The overall sensitivity and specificity were 98% and 88%, respectively. CONCLUSIONS: 3D-CTA is an useful noninvasive technique with adequate sensitivity and specificity to assess coronary artery bypass graft patency.