MR血管成像在介入诊疗Budd-Chiari综合征合并肝静脉血栓中的应用

目的探讨MRA在介入诊疗Budd-Chiari综合征（BCS）合并肝静脉血栓中的应用价值。方法 20例患者经DSA证实为BCS合并肝静脉血栓并接受介入治疗,均于术前1周内接受MRA检查,对比分析MRA与DSA对显示肝静脉血栓的能力及BCS合并肝静脉血栓的影像学表现。结果 20例患者中,MRA共显示肝脏静脉51支,包括肝静脉血栓40支,副肝静脉血栓8支,肝静脉通畅3支;对其中40支肝脏静脉行DSA检查,发现肝静脉血栓33支,副肝静脉血栓4支,3支肝静脉通畅。与DSA对比,MRA诊断BCS合并肝静脉血栓的敏感度为97.22%（35/36）,特异度为75.00%（3/4）,准确率为95.00%（38/40）。两种检查方法诊断BCS合并肝静脉血栓的一致性良好（Kappa=0.722,P〈0.01）,临床检出率差异无统计学意义（χ2=0.5,P〉0.05）。结论 MRA能全面、准确诊断BCS合并肝静脉血栓,对介入治疗有重要指导作用。     

颈动脉粥样硬化性狭窄的超声与血管造影比较研究

目的比较超声与数字减影血管造影（DSA）诊断颈动脉粥样硬化性狭窄的差异。方法对340例缺血性脑血管病患者行颈动脉超声及全脑DSA检查,其中短暂性脑缺血发作（TIA）患者105例,脑梗死患者235例;又根据年龄分为青年组（n=54）、中年组（n=137）和老年组（n=149）。结果超声与DSA检查均发现梗死组颈动脉狭窄高于TIA组（P〈0．05）;超声与DSA检查均发现老年组颈动脉狭窄高于中年组和青年组（P〈0．05）,中年组高于青年组（P〈0．05）;超声检查颈动脉颅外段动脉狭窄与DSA相比,狭窄、闭塞及总体符合率分别为89．39％、80．85％、87．15％。结论颈部血管超声联合应用DSA对颈动脉粥样硬化的病因、诊断、临床治疗及术前评估与术后随访意义重大。     

CTA+CDFI检查对脑动脉瘤诊断效能分析

目的 探究CT血管造影（CTA）+彩色多普勒血流显像（CDFI）检查对脑动脉瘤（CA）诊断效能。方法 选取2019年3月～2021年9月我院收治的221例疑似CA患者,均行CTA、CDFI检查,以三维数字减影血管造影（3D-DSA）检查为金标准,观察CTA、CDFI检查结果,分析两种检查方式单独及联合检查诊断效能,对比CTA、CDFI检查瘤体检出数量、具体瘤体部位符合率、瘤体最大直径、瘤颈径。结果 221例疑似CA患者中,3D-DSA检查显示阳性134例,CDFI检查显示阳性122例,CTA检查显示阳性124例,CTA+CDFI检查显示阳性140例。CTA+CDFI检查灵敏度（97.76%）、准确度（94.57%）、阴性预测值（96.30%）高于CDFI(85.07%、87.33%、79.80%)、CTA(85.82%、87.33%、80.41%)单独检查（P<0.05）;CTA+CDFI检查漏诊率（2.24%）低于CDFI(14.93%)、CTA(14.18%)单独检查（P<0.05）;CTA+CDFI检查与3D-DSA检查金标准CA瘤体最大直径、瘤颈径对比无显著差异（P...     

血管内栓塞辅助显微手术治疗复杂难治性脑动静脉畸形

目的　探讨复杂难治性脑动静脉畸形 (AVM)的血管内栓塞辅助显微手术治疗的临床效果。　方法　分析 1999年 11月～ 2 0 0 3年 12月治疗Spetzler分级Ⅲ级以上脑AVM的 3 3例临床资料。Spetzler分级Ⅲ级 2 2例 ,Ⅳ级 9例 ,Ⅴ级 2例。脑AVM体积最大为 7 0cm× 8 6cm× 6 1cm ,最小为 2 5cm× 3 0cm× 2 8cm。所有病例均接受了血管内栓塞辅助显微手术治疗。　结果　 3 3例中 3 1例术后恢复良好 ,其余 2例中度致残。术后行MRI、MRA及DSA检查 ,未见血管流空影像及畸形血管影像。术后 6个月内行DSA血管造影检查证实 3 3例脑AVM完全切除 ,未见畸形血管影像。　结论　Spetzler分级Ⅲ级以上脑AVM是难治性疾病。血管内栓塞辅助显微手术切除可以取得良好的临床疗效。     

脑动脉硬化患者合并椎动脉异常的临床筛查探讨

目的:探讨以椎动脉数字减影血管造影(DSA)为参照标准,椎动脉超声、经颅多普勒(TCD)、磁共振动脉造影(MRA)、计算机体层动脉造影(CTA)对脑动脉硬化患者合并椎动脉异常的临床筛查、诊断价值。方法:对2006年1月至2010年9月收治的186例脑动脉硬化患者进行回顾性分析,男133例,女53例;年龄30～84岁,平均63.8岁。186例全部行DSA椎动脉造影,172例行椎动脉超声和TCD,53例行MRA,25例行CTA,以DSA椎动脉造影阳性为病例组,阴性为对照组,分别计算4种检查方法的灵敏度、特异度和一致率。结果:DSA、椎动脉超声、TCD、MRA、CTA检查发现椎动脉异常率分别为50.00%(93/186)、30.81%(53/172)、49.42%(85/172)、15.10%(8/53)、40.00%(10/25)。以DSA椎动脉造影为参照标准,超声检查的灵敏度50.57%,特异度89.41%,一致率69.77%;TCD的灵敏度68.48%,特异度72.50%,一致率70.35%;MRA的灵敏度21.43%,特异度92.00%,一致率54.72%;CTA的灵敏度63.64%,特异度78.57%,一致率72.00%。结论:椎动脉超声、TCD、MRA、CTA4种方法根据患者综合情况,合理、联合应用,有助于全面客观地诊断伴有动脉硬化患者的椎动脉异常。对明确有脑血管疾病的患者进行潜在的颈椎手法推拿,需引起高度警惕,可能会出现椎动脉损伤而造成并发症。     

MRA与DSA在椎动脉型颈椎病诊断中的应用比较

目的对比椎动脉磁共振造影(magneticresonanceangiography,MRA)与数字减影血管造影(digitalsubtractionangiography,DSA)诊断椎动脉型颈椎病的意义。方法自2001年11月至2004年2月,共收集临床诊断为椎动脉型颈椎病的患者35例,男11例,女24例;年龄23～76岁,平均58.3岁。同时行MRA及DSA检查,观察椎动脉的走行、管径、是否存在狭窄及狭窄部位等。结果DSA检查有阳性发现者32例,其中单侧椎动脉受累19例,双侧受累13例。MRA有阳性发现者29例,其中单侧椎动脉受累14例,双侧受累15例。除5例MRA阳性而DSA阴性外,其他MRA与DSA均为阳性。两种方法对管腔变细的诊断吻合率为100%。DSA对局限性狭窄及单侧缺如的诊断优于MRA。MRA对颈椎不稳及增生导致的椎动脉迂曲变形等表现的诊断阳性率高于DSA。结论(1)椎动脉DSA检查对局限性压迫及动力性压迫的诊断较准确,对椎动脉压迫来源较易作出判断,检查中可变换体位。缺点是为有创检查,存在造影剂副反应及用量的限制。(2)MRA为无创检查,容易诊断弥漫性、长节段狭窄及闭塞,对合并其他类型颈椎病患者较适用。可同时扫描颈椎间盘、脊髓及颈部其他血管,以进行鉴别诊断。适用于临床诊断不明确、高龄不能耐受DSA检查的患者。MRA的不足之处是对局部微小部位的狭窄或非闭塞性病变的诊断率低,检查中无法随时变换体位。     

64排CT与DSA及C臂 CT检出肝癌小病灶的对比

目的比较64排CT、DSA和C臂CT对肝癌小病灶（直径≤3.0 cm）的检出能力。方法对48例肝癌患者先行64排CT扫描,再行肝动脉DSA、TACE和C臂CT扫描。2周内复查CT（碘化油CT）,由3名影像科医师对64排CT、DSA、C臂CT和碘化油CT图像进行分析,计数4种方法对直径≤3.0 cm病灶的显示情况,并以碘化油CT诊断结果作为标准,用McNemar检验比较64排CT、DSA和C臂CT诊断肝癌小病灶的检出率。结果碘化油CT证实48例患者共133个病灶（直径0.5~3.0 cm）,其中64排CT检出55个（55/133,41.35%）,DSA检出110个（110/133,82.70%）,C臂CT检出130个（130/133,97.74%）,三者间两两比较,差异均有统计学意义（P〈0.0001）。根据病灶大小将133个病灶分为3组,A组（直径0.5~1.0 cm）98个病灶,B组（直径1.1~2.0 cm）27个,C组（直径2.1~3.0 cm）8个。64排CT、DSA、C臂CT分别检出A组病灶29、76和95个,B组19、26和27个,C组7、8和8个。结论 C臂CT可提高对肝癌小病灶的检出率。     

多层螺旋CT血管成像诊断脑动脉瘤:与DSA对比研究

目的 探讨16层螺旋CT容积再现脑血管成像技术对脑动脉瘤的诊断价值。方法 对23例临床怀疑脑动脉瘤患者（其中蛛网膜下腔出血者20例）的16层螺旋CT三维血管后处理图像、DsA图像进行回顾性对比研究。CT后重建技术分别采用小视野容积再现技术（shutter volume rendering）、最大密度投影法（M1P）和多曲面重建（MPR），所有CT图像及DSA脑血管造影图像均由两位放射科医生和两位脑外科医生进行双盲法分析评价。结果 16层螺旋CT脑血管成像共检出动脉瘤25个，其中3例为多发性，1例CT血管成像（CTA）结果为阴性，阳性率95．7％（22／23），与DSA比较符合率95．7％（22／23）；16层CTA发现动脉瘤的敏感性为100％（24／24），特异性为100％（1／1），准确性为96．2％（25／26）。CTA对显示瘤体、瘤颈、载瘤动脉与周围血管关系与DSA相比更清晰、确切，并能显示病灶与颅骨结构间的关系，立体感强。结论 16层螺旋CT脑血管成像对脑动脉瘤具有极高的诊断价值，相对无创是诊断脑动脉瘤的最佳影像检查方法，有望替代DSA。     

3D-CTA在破裂动脉瘤诊断及指导治疗中的价值

目的:探讨3D计算机断层血管造影术(3D-CTA)在破裂脑动脉瘤诊治中的临床应用价值。方法:选取2012年9月—2017年6月采用介入手术治疗的47例颅内动脉瘤破裂出血患者作为研究对象,所有患者在手术前均接受了3D-CTA检查、数字剪影血管造影(DSA)检查,以DSA检查结果作为金标准,计算3D-CTA诊断颅内动脉瘤的符合率;并对47例患者的介入栓塞治疗效果进行临床评价。结果:47例颅内动脉瘤破裂出血患者,经DSA检查共发现51处动脉瘤,其中破裂出血47个,4个未破裂;3D-CTA检查共计发现动脉瘤48个,其中对大脑中动脉瘤、小脑后下动脉动脉瘤、脉络膜前动脉瘤、A1～A3段动脉瘤、椎动脉动脉瘤的检出率与DSA检查结果的符合率均达到100%;漏诊前交通动脉瘤、后交通动脉瘤、床突段动脉瘤各1个,与DSA检查结果的诊断符合率分别为94.74%、93.33%、66.67%;3D-CTA诊断动脉瘤的结果与DSA的结果整体符合率为94.12%;47例患者均成功实施手术,术后进行动脉瘤栓塞效果评价,其中达到0级标准43个、达到1级标准8个;出现脑梗死2例,术中破裂出血2例;术后28 d及术后3个月两组患者的mRS分级情况良好,术后28 d及术后3个月的预后良好率分别为72.34%、85.11%。结论:3D-CTA在破裂脑动脉瘤诊断中与DSA具有极高的符合率,因其具有检测时间短、无创等优势,在临床指导动脉瘤诊断及介入治疗中具有重要价值。     

彩色多普勒超声及计算机断层扫描血管造影术对腹膜后纤维化的诊断价值及随访分析

目的探讨彩色多普勒超声（CDU）及计算机断层扫描血管造影术（CTA）对腹膜后纤维化（RPF）诊断及随访价值。 方法回顾性分析2016年1月至2021年12月中山大学附属第一医院收治并诊断为RPF患者18例。对RPF组织回声特点、累及范围、组织厚度进行比较；评估腹主动脉、下腔静脉、髂动脉血流情况以及输尿管是否扩张、有无肾积水等。随访分析患者的治疗效果。 结果18例患者中，单侧肾积水8例，双侧6例；单侧输尿管扩张5例，双侧8例。17例进行CTA检查，1例仅累及内脏动脉，1例仅累及髂内动脉，15例不同程度累及腹主动脉及髂动脉，下腔静脉被包绕者7例。8例进行CDU检查，1例累及髂内动脉者漏诊，其余患者CDU检查与CTA检查结果一致。两者测量RPF厚度差异无统计学意义。平均随访时间36.2（5~66）个月，其中12例患者随访症状均有明显改善。3例CDU及CTA随访纤维化组织厚度较治疗前明显缩小。 结论利用CDU及CTA对RPF影像学特点、病变范围、肾脏、输尿管及受累大血管与纤维组织之间的关系病变等进行多角度分析，可以提高对RPF诊断的准确性，避免漏诊及误诊，对RPF的早期诊断、治疗及随访具有重要的意义。     

Arterial diameters on catheter and computed tomographic angiography

BackgroundThe diagnosis of cerebral vasospasm is hampered by lack of an accurate, noninvasive test. Computed tomographic angiography (CTA) may be useful but the correlation between arterial diameters determined from catheter digital subtraction angiography (DSA) and CTA over a range of artery sizes would need to be determined to show this. The purpose of this study was to determine the correlation between artery diameters measured on DSA and multidetector CTA.MethodsTwo hundred forty artery diameters were measured in DSA and CTA from 46 patients who underwent both studies within 12 hours of each other. Axial cross section, maximum intensity projection, and volume-rendered images were measured and compared by linear correlation. Two independent readers measured CTA diameters to determine interobserver variability by linear correlation. Values also were categorized and compared by χ² and κ statistics. Analysis was repeated with unmeasurable arteries assigned a value of 0.ResultsThere were significant correlations between arterial diameters measured on DSA and those from CTA measured by any method (R² ranging from 0.45 to 0.76, P < .0001), although there was a tendency for the slope of this relationship to be less than 1, indicating underestimation of diameter of large and overestimation of diameter of small arteries with CTA. Computed tomographic angiography diameters also correlated significantly between the 2 reviewers with higher values often when unmeasureable arteries were assigned a value of 0 (κ = 0.23-0.55, P < .0001).ConclusionArterial diameters measured on multidetector CTA correlate well with those determined from DSA and should permit use of CTA for quantitative study of cerebral vasospasm and other conditions requiring accurate measurement of arterial diameters. The limitation of CTA remains the inability to measure some arteries due to artifact.     

双源Flash扫描模式CTA结合迭代重建诊断脑血管病变

目的探讨第二代双源Flash扫描模式CTA结合迭代重建诊断脑血管病变的临床应用价值。方法回顾性分析105例接受双源Flash扫描模式结合迭代重建脑血管CTA的疑诊脑血管病变患者的资料。以3D-DSA为金标准,计算Flash扫描模式CTA诊断脑血管病变的敏感度、特异度、阳性预测值、阴性预测值及准确率。比较3D-DSA与Flash扫描模式CTA诊断脑血管病变的差异,计算双源Flash扫描模式CTA的辐射剂量及对比剂用量。结果 105例中,Flash扫描模式CTA诊断60例共73个脑动脉瘤,其中微小动脉瘤24个;诊断13例脉动静脉畸形(AVM);检出颈内动脉海绵窦瘘5例、静脉畸形2例,脑动脉狭窄9例,烟雾病6例。以3D-DSA为金标准,CTA误诊微小动脉瘤2例,漏诊1例位于大脑中动脉远端区域的AVM。Flash扫描模式CTA诊断脑血管病变的敏感度、特异度、阳性预测值、阴性预测值及准确率分别为98.94%(93/94)、81.82%(9/11)、97.89%(93/95)、90.00%(9/10)和97.14%(102/105),辐射剂量为(231.9±13.2)mGy·cm,对比剂用量为(49.32±2.54)ml。结论脑部Flash扫描模式CTA结合迭代重建可快速、准确诊断脑血管病变,同时辐射剂量低、对比剂用量少。     

Diagnostic value of CTA and MRA in intracranial traumatic aneurysms

Objective： To investigate the diagnostic value of computerized tomographic angiography （ CTA ） and magnetic resonance angiography （ MRA ） for intracranial traumatic aneurysms （TAs）. Methods： CTA and MRA of six patients with intracranial TAs verified by digital subtraction angiography （DSA） and surgery were retrospectively analysed. All patients were examined by nonenhanced computerized tomography （CT） and two by CTA. The source data were reconstructed by volume rendering （VR） and multi-planar reconstruction （MPR） from CTA. Four of them had maxhnum intensity project （MIP） from MRA. Results ： Of the six patients, a total of seven TAs were detected by CTA and MRA examinations. Five cases had only one TA and one case had two TAs. The average diameter was 2.3 cm （1.1-3.3 cm）. CTA demonstrated two TAs appeared at the cavernous segment of the internal carotid artery （ICA） and the middle cerebral artery （MCA） respectively. MCA TA was definitely and dearly demonstrated on VR images, whereas VR images failed to depict the cavernous ICA TA, which was detected on MPR images. Two TAs were found irregular saccular shape,irregular margin of parent artery and wide neck on CTA. Four MRA examinations demonstrated five TAs, including the cavernous segment ICA TAs （2 cases）, the supraclinoid segment ICA TA （1 case ）, and the cavernous segment associated with opposite side of the petrosal segment ICA TA （1 case）. In a cavernous ICA TA, MRA only revealed aneurysm body, whereas aneurysm neck and distal segment of the parent artery were not revealed. In the remaining cases, MRA clearly depicted aneurysm body and parent artery, whereas the neck was not displayed. ICA TAs showed irregular capsnle-like high signal intensity on MRA images. Four TAs exhibited irregular distal segment of the parent artery. TAs at the supraclinoid segment or MCA failed to find fracture signs on nonenhanced CT. Conclusions： Both CTA and MRA examinations are the effective non-invasive method of imageology for diagnosing intracranlal TAs, while CTA is more eligible for diagnosing TAs after nonenhanced CT has demonstrated skull base fractures.     

Difference of Thrombus Location between Initial Noninvasive Vascular Image and First DSA Findings in Mechanical Thrombectomy for Intracranial Large Vessel Occlusion: Post Hoc Analysis of the SKIP Study

In patients who undergo mechanical thrombectomy for intracranial large vessel occlusion, the occluded site is sometimes distal to the site shown in the initial vascular imaging. We investigated the factors related to the change in the occluded site between the sequential imagings. The 203 patients in the SKIP study were reviewed retrospectively. Magnetic resonance angiography (MRA) or computed tomography angiography (CTA) was used to assess the occluded site. The occluded site shown in the cerebral angiography appeared to be distal to the occluded site shown in the initial vascular imaging in 55 patients (group A). The location of the occluded site in the remaining 148 patients did not change between the sequential imagings (group B). MRA was used more often than CTA in group A (54 MRA, 1 CTA; P <0.01). Patients with middle cerebral artery (M1) occlusion were more likely to show change of the occluded site than patients with internal carotid artery (ICA) occlusion (M1: 38%, ICA: 9%; P <0.01). The number of patients who received intravenous recombinant tissue plasminogen activator did not differ between the two groups (group A: 54%, group B: 49%; P = 0.5). In patients with acute intracranial large vessel occlusion who require mechanical thrombectomy, physicians should be aware that the location of the thrombus may be distal to the occluded site shown in the initial vascular imaging, particularly in patients with M1 occlusion shown by MRA.     

Imaging Modalities for Renal Artery Stenosis in Suspected Renovascular Hypertension: Prospective Intraindividual Comparison of Color Doppler US,CT Angiography,GD-Enhanced MR Angiography,and Digital Substraction Angiography

The aim of the study was to evaluate the diagnostic accuracy of Color Doppler US, CT Angiography (CTA), and GD-enhanced MR Angiography (MRA) compared with digital subtraction angiography (DSA) for the detection of renal artery stenosis in patients with clinically suspected renovascular hypertension. Fifty-eight patients with suspected renovascular hypertension were enrolled in the study. All patients underwent Color Doppler US, CTA and GD-enhanced MRA. DSA was the gold standard method for the number of renal arteries, existence and degree of stenosis, or evidence of fibromuscular dysplasia. DSA depicted 132 renal arteries, 16 stenoses, and 4 arteries with fibromuscular dysplasia. Color Doppler US failed to detect 1 main and 14 polar arteries. CTA depicted all main renal arteries and 7/16 polar arteries, but failed to detect stenosis in two accessory vessels. Likewise, MRA did not detect stenotic accessory renal arteries, depicted 9/16 polar renal arteries, but missed two main renal arteries. All methods depicted the four main renal arteries with fibromuscular dysplasia. The overall sensitivity, specificity, and positive and negative predictive accuracy were 75%, 89.6%, 60% and 94.6%, respectively, for color Doppler US; 94%, 93%, 71%, and 99%, respectively, for CTA; and 90%, 94.1%, 75%, and 98%, respectively, for GD-enhanced MRA. CTA and GD-enhanced MRA have comparable and satisfactory results with respect to the negative predictive accuracy of the suspected renal artery stenosis. The concept of an imaging algorithm including US as screening test when appropriate and CTA or MRA as the second step-procedure is suggested. Therefore, DSA may be reserved for cases with major discrepancies or therapeutic interventions.     

Wall Imaging of Cerebral Aneurysms with a Modified Surface-Rendering Technique of Spiral CT

Summary ? Background. There has been no detailed documentation of the advantages of three-dimensional (3D) wall imaging of cerebral aneurysms. The usefulness of such endoscopic images obtained with modified spiral computed tomography angiography (CTA) was therefore examined in comparison with conventional spiral CTA and digital subtraction angiography (DSA).  Methods. Fifteen of 45 patients who underwent conventional spiral CTA in our department in the past 4 years, were further studied with a technical modification of surface-rendering reconstruction in spiral CT. Endoscopic images were obtained by regulating the lower and higher thresholds of spiral CT scans in processing. Digital subtraction angiography was also performed for 14 of the 15 patients. The 3D wall images of the cerebral aneurysms were assessed in comparison with findings from conventional CTA and DSA.  Findings. The true orifice of the aneurysms could be visualized with the endoscopic mode in all of the 15 cases. In paraclinoid aneurysms, particularly below the anterior clinoid process, the relationships to associated vessels and bone structures were more clearly disclosed with this mode. The endoscopic images of aneurysms with rigid clots or neighboring distended veins were not as adversely affected as conventional CTA. In 4 of the 15 the wall imaging precisely located the branches arising from the dome of aneurysms which DSA could not.  Interpretation. Wall imaging of complex or small cerebral aneurysms provided valuable information on their relationships to associated arteries and surrounding bony structures. The endoscopic mode, a simple modification of surface rendering, is easily available in commercial CT processing packages.     

Comparison of computerized tomography angiography and digital subtraction angiography in ruptured cerebral aneurysm surgery

Objective: The aim of the present study was to review the efficacy of 16‐row multislice computerized tomography angiography (CTA) in ruptured cerebral aneurysm surgery by comparison with conventional digital subtraction angiography (DSA). Methods: A systemic review of patients suffering from ruptured cerebral aneurysm was performed. We report the results obtained during the 19‐month period from April 2003 to October 2004. In total, 32 patients had undergone aneurysm surgeries, in which 11 patients had both DSA and CTA performed. Results: Among the 11 patients with both DSA and CTA performed, two aneurysms were missed in DSA in two patients. The sensitivity and specificity of CTA were 100%. The correlation of CTA with DSA in operative findings was 100%. Our CTA could detect the aneurysm size down to 2 mm in diameter. Conclusion: The diagnostic accuracy of 16‐row multislice CTA is promising and it compares well with DSA for detection and evaluation of ruptured cerebral aneurysms. It is safe and effective to establish treatment decision on the basis of CTA alone in the majority of cases.     

减影CTA阈值调节法测量脑血管径线

目的评价减影CTA中采用阈值调节法测量脑血管径线的准确性。方法收集接受脑血管CTA检查的患者60例,采用阈值调节法测量并比较常规CTA和减影CTA中双侧大脑前动脉、大脑中动脉、颈内动脉的血管径线差异。结果根据常规CTA血管内CT值标化阈值后,减影CTA所测各段血管径线均小于常规CTA测值(P均0.05);分别根据各自图像中血管内CT值标化阈值后,常规CTA和减影CTA所测各段血管径线差异均无统计学意义(P均0.05)。结论减影CTA中采用阈值测量法测量血管径线准确、可靠,具有一定临床应用价值。     

DSA杂交手术室“一站式”精准治疗颅内复杂动脉瘤合并脑内血肿

目的探讨DSA杂交手术室"一站式"精准治疗颅内复杂动脉瘤合并脑内血肿的价值。方法对11例颅内复杂动脉瘤合并脑内血肿未发生脑疝患者于发病72 h内行DSA杂交手术室"一站式"精准治疗,术中以DSA评估动脉瘤是否累及载瘤动脉,行DSA引导下颅内外血管搭桥联合动脉瘤孤立术或球囊临时阻断辅助下动脉瘤塑形夹闭治疗,同步清除血肿。实时监测术中治疗情况,记录术中及术后并发症。随访观察术后6个月CTA表现;于出院及末次随访时以格拉斯哥转归评分(GOS)评价疗效,GOS≥4分认为治疗效果良好。结果对5例行颞浅动脉(STA)-大脑中动脉(MCA)搭桥,术中DSA示桥血管通畅,一期行动脉瘤孤立术;6例行动脉瘤塑形夹闭,术中3例误夹穿支血管,1例夹闭不全,调整瘤夹位置后夹闭效果满意。术后并发小灶性脑梗死2例,癫痫1例。出院时、末次随访时治疗效果良好患者均占81.82%(9/11)。术后6个月均未见复发,吻合口及载瘤动脉无狭窄。结论对难以直接夹闭或介入栓塞治疗的颅内复杂动脉瘤合并脑内血肿患者,采用DSA杂交手术室"一站式"精准治疗可获得较好效果。