Three-dimensional Imaging of Multi-slice Spiral CT in Bronchial Artery Correlative Study on Blood Supply of Central Lung Cancer and Its Clinical Significance

Objective: To evaluate three-dimensional bronchial artery imaging charactersin central lung cancer and applied values with multi-slice spiral CT (MSCT) to provide theoreticalevidence on blood supply and intervention therapy. Methods: Eighteen patients with central lungcancer underwent MSCT with real time helical thin-slice CT scanning. Three-dimensional bronchialartery reconstruction was done at the console work-station. The space anatomical characters ofbronchial artery were observed through different rotations. Results: For 6 cases, thethree-dimensional images of bronchial artery (33.33%) could exactly show the origins, the routes(lung inner segment and mediatism segment) and the diameters of bronchial arteries. Vision rate ofbronchial arteries was the highest in pulmonary artery stricture and truncation groups, and thevessels' diameter became larger apparently. These characters demonstrated blood supply of this kindof central lung cancer come from bronchial artery. Volume rendering images were the best ones amongthree-dimensional images. Conclusion: Three-dimensional imaging with MSCT in bronchial artery canreveal the anatomical characters of bronchial artery and provide theoretical evidence on bloodsupply and intervention therapy of central lung cancer.

Multi-slice spiral CT angiography in evaluating donors of living-related liver transplantation

BACKGROUND: During the past years, the number of liver transplantation has increased greatly, but the number of available organs has not increased. In view of the critical shortage of organs, the indications for living-related liver transplantation (LRLT) have broadened since experience with the procedure has been achieved. This study was undertaken to assess the value of multi-slice spiral CT (MSCT) angiography in evaluating the hepatic arterial and veinous anatomy of potential donors for LRLT. METHODS: MSCT was performed after intravenous injection of contrast material at 3 ml/s. The total dose was calculated as 2 ml/kg. Twenty LRLT donors (2 men and 18 women) were subjected to MSCT angiography of hepatic blood vessels. These were generated by volume rendering and maximum intensity projection, while curved planar reformation was added in 5 patients. RESULTS: We identified 10 important hepatic vascular variants in 9 of the 20 donors (4 arterial, 4 venous, and 2 portal venous variants). In hepatic arterial variants, two had a replaced right hepatic artery arising from the superior mesenteric artery, an accessory right hepatic artery from the superior mesenteric artery and a replaced left hepatic artery arising from the left gastric artery. In hepatic venous variants, three had an accessory inferior right hepatic vein and one had two accessory inferior right hepatic veins. In hepatic portal venous variants, two had trifurcation of the main portal vein. CONCLUSIONS: As a non-invasive and reliable method, MSCT angiography is of value in the clinical evaluation of LRLT donors. MSCT angiography should be recommended as a routine preoperative examination for potential LRLT donors.

Study on the combined value of multi-slice spiral CT in the diagnosis of elderly colorectal cancer colorectal cancer tumor markers

Objective:To investigate the value of tumor markers in colorectal cancer with multi-slice spiral CT in the diagnosis of elderly colorectal cancer.Methods:From January 2016 to September 2017 year period, 73 elderly patients with colorectal cancer treated in our hospital were selected as observation group;64 elderly patients with intestinal benign lesions were selected as control group during the same period. Serum samples were collected to detect contents of CEA, CA72-4, CA19-9 and CYFRA21-1 by Roche luminous immunoassay analyzer, and multi slice spiral CT was used.Results:Serum levels of CEA, CA72-4, CA19-9 and CYFRA21-1 levels of the observation group were significantly higher than that of the control group;the positive rate of CEA, CA72-4, CA19-9, CYFRA21-1 and their combined detection were all significantly higher than that of the control group;positive rate of MSCT in the observation group was higher than the control group;positive rates of tumor markers combining with MSCT examination of colorectal cancer were higher than that of combined detection of tumor markers and MSCT examination;but there was no significant difference in positive rate of combined detection of tumor markers and the positive rate of MSCT detection of colorectal cancer.Conclusion:Colorectal cancer tumor markers combined with multi-slice spiral CT in the diagnosis of colorectal cancer in elderly has important research value, can significantly improve the positive rate of diagnosis.

Value of Multi-slice Spiral CT in the Diagnosis and Resectability of Pancreatic Cancer

Objective:To analyze the value of multislice spiral CT in the diagnosis and resectability of pancreatic cancer.Method:56 patients with pancreatic cancer treated in our hospital from January 2018 to October 2019 were selected as the research subjects.All patients underwent multi-phase scanning by multislice spiral CT.According to the results of the images,observe whether the pancreatic cancer has affected the blood vessels surrounding the pancreas,evaluate the resectability based on the results of the examination,and analyze the final results of the operation which was taken as the standard.Results:all the 56 cases presented slightly low density or equal density,and 28 cases had complete outline.Multi-slice spiral assessment of patients’vascular invasion types found that 192 branches can be resected with 70 branches cannot;Multi-slice spiral assessment of the main arterial and venous invasion grades around the pancreas of the patients found that 212 branches can be resected with 50 branches cannot;Multi-slice spiral CT was used to evaluate the resectability of pancreatic cancer compared with surgical results.The accuracy of resectable types of vascular invasion was 72.52%;the accuracy of resectable vascular invasion grades was 79.39%.Conclusion:the application of multi-slice spiral CT in the diagnosis of pancreatic cancer can provide a clear understanding of the condition of vascular invasion and distant metastasis,and the accuracy of assessing resection can reach more than 70.00%,which provides a reference for clinical application.

Comparison of the Imaging Manifestations and Diagnostic Values of Multi-slice Spiral CT and Enhanced MRI Scans of Primary Liver Cancer(PLC)Intrahepatic Lesions

Objective:To compare and analyze the clinical diagnostic value of multi-slice spiral CT and enhanced MRI for primary liver cancer(PLC),and to summarize the imaging findings.Methods:The research subjects in this article were 50 patients with PLC who were admitted to our hospital from 2017 April to 2018 September.After the patients were admitted,they were examined by multi-slice spiral CT and enhanced MRI scanning,and the pathological diagnosis results were followed up.Relevant information was reviewed and analyzed.Results:The detection rate of multi-slice spiral CT was higher than that of MRI in the portal venous phase lesion detection.The difference was statistically significant(P<0.05).The detection rate of lesions in the arterial phase and delayed phase was not statistically significant(P>0.05);the diagnostic accuracy of multi-slice spiral CT was 85.96%,and the diagnostic accuracy of enhanced MRI scanning was 91.11%,which was not statistically significant(P>0.05).MRI scans showed the capsules of primary liver cancer better than CT,but the difference was not statistically significant(P>0.05).Conclusion:In conclusion,both multi-slice spiral CT and enhanced MRI can be used for the effective diagnosis of primary liver cancer intrahepatic lesions.The diagnostic value of the two is equivalent,but enhanced MRI has a slightly higher diagnostic accuracy and can be used as the preferred method.

多层螺旋CT应用于肺磨玻璃结节诊断中的价值及CT指标分析

目的观察多层螺旋CT应用于肺磨玻璃结节诊断中的价值及分析CT指标。方法选择2023年1—12月济宁市第三人民医院收治的57例肺磨玻璃结节患者,进行多层螺旋CT检查、病理学检查,将病理学检查作为“金标准”,观察多层螺旋CT应用于肺磨玻璃结节定性诊断中的效果。根据病理学检查结果分为恶性组、良性组,比较2组CT指标,分析相关CT指标。结果病理学检查结果证实,57例肺磨玻璃结节患者中,25例(43.86%)为恶性,32例(56.14%)为良性;以病理学检查结果作为“金标准”,多层螺旋CT应用于肺磨玻璃结节定性诊断中的敏感度、特异度、准确度、阴性预测值、阳性预测值分别为92.00%(23/25)、96.88%(31/32)、94.74%(54/57)、93.94%(31/33)、95.83%(23/24),与病理学检查结果的一致性Kappa值为0.893。恶性组病灶边界模糊、内部结构不均匀、空泡征、分叶征、毛刺征占比分别为80.00%、84.00%、44.00%、64.00%、56.00%,均高于良性组的37.50%、34.38%、0、9.38%、9.38%;恶性组最大直径、CT值分别为(11.97±1.81)mm、(-387.43±121.30)HU,均高于良性组的(7.27±1.02)mm、(-510.31±160.03)HU,差异有统计学意义(P<0.05)。结论多层螺旋CT应用于肺磨玻璃结节定性诊断中的效果较好,相关CT指标包括病灶边界、内部结构、空泡征、分叶征、毛刺征及最大直径、CT值,可为临床医生提供更可靠的影像学依据。

多层螺旋CT对囊腔类肺癌的诊断价值及影像征象分析

目的:分析多层螺旋CT(MSCT)对囊腔类肺癌和非囊腔类肺癌的鉴别诊断价值与影像征象。方法:选取2021年9月—2023年9月临沂市中心医院收治的疑似囊腔类肺癌患者80例,均实施MSCT检查,以病理结果为金标准,分析MSCT对囊腔类肺癌的诊断效能,比较囊腔类和非囊腔类肺癌的影像特征。结果:MSCT诊断囊腔类肺癌的准确率为96.25%、灵敏度为95.35%、特异度为97.30%。囊腔类肺癌与非囊腔类肺癌患者在病变位置、病灶的最大直径、囊腔数目、混合磨玻璃、实性结节、囊壁均匀度、实体组分大小、病变非囊腔局部CT值方面的差异均有统计学意义(P<0.05)。结论:MSCT对囊腔类肺癌有较高的诊断价值,可指导临床后续治疗,但仍应结合患者实际进行选择。

Using receiver operating characteristic curves to evaluate the diagnostic value of the combination of multislice spiral CT and alpha-fetoprotein levels for small hepatocellular carcinoma in cirrhotic patients

BACKGROUND： The various combination of multiphase enhancement multislice spiral CT （MSCT） makes the diagno- sis of a small hepatocellular carcinoma （sHCC） on the back- ground of liver cirrhosis possible. This study was to explore whether the combination of MSCT enhancement scan and alpha-fetoprotein （AFP） level ficiency for sHCC. could increase the diagnostic ef- METHODS： This study included 35 sHCC patients and 52 cir- rhotic patients without image evidence of HCC as a control group. The diagnoses were made by three radiologists em- ploying a 5-point rating scale, with postoperative pathologic results as the gold standard. Receiver operating characteristic （ROC） curve analysis was performed to evaluate the diag- nostic value of the three MSCT combination modes （arterial phase＋portal-venous phase, arterial phase＋delayed phase, arterial phase＋portal-venous phase＋delayed phase） and AFP levels for sHCC on the background of liver cirrhosis. RESULTS： The area under ROC curve （AUC）, sensitivity, and specificity of the combination of arterial phase＋portal- venous phase＋delayed phase were 0.93, 93%, and 82%, respectively. The average AUC of the arterial phase＋portal- venous phase＋delayed phase combination was significantly greater than that of the arterial phase＋portal-venous phase （AUC=0.84, P=0.01） and arterial phase＋delayed phase （AUC=0.85, P=0.03）. Arterial phase＋portal-venous phase had a smaller AUC （0.84） than arterial phase＋delayed phase （0.85）, but the difference was insignificant （P=0.15）. After combining MSCT enhancement scan with AFP, the AUC, sensitivity, and specificity were 0.95, 94%, and 83%, respectively, indicating a greatly increased diagnostic efficiency for sHCC. CONCLUSIONS： The combination of AFP and 3 phases MSCT enhancement scan could increase the diagnostic efficiency for sHCC on the background of liver cirrhosis. The application of ROC curve analysis has provided a new method and reference in HCC diagnosis.

肺腺癌的MSCT征象与胸内增大淋巴结的关系分析

目的分析肺腺癌的多层螺旋CT(MSCT)征象与胸内增大淋巴结的关系。方法回顾性收集2020年6月至2023年6月在广东省中山市小榄人民医院行MSCT检查的96例肺腺癌患者的病例资料,根据患者是否出现胸内增大淋巴结(淋巴结短径>1 cm)分为有胸内增大淋巴结组(n=72)和无胸内增大淋巴结组(n=24),比较两组患者病理特征、MSCT征象,Logistic回归分析MSCT征象(肿瘤强化、血管集束征、分叶征、毛刺征、胸膜凹陷征)与胸内增大淋巴结的关系。结果有无胸内增大淋巴结肺腺癌患者肿瘤大小以及分化程度比较,差异均有统计学意义(P<0.05)。有无胸内增大淋巴结肺腺癌患者MSCT征象(肿瘤强化、血管集束征、分叶征、毛刺征以及胸膜凹陷征)比较,差异均有统计学意义(P<0.05)。Logistic回归分析肿瘤大小、分化程度、肿瘤强化和毛刺征均与胸内增大淋巴结的关系有统计学意义(P<0.05),回归系数分别为2.866、3.108、3.317和3.343,肿瘤大小、肿瘤强化和毛刺征均与胸内增大淋巴结呈正相关,肿瘤越大、强化程度越高、出现毛刺征,则越有可能出现胸内增大淋巴结;肿瘤分化程度与胸内增大淋巴结呈负相关,肿瘤分化程度越低,则越有可能出现胸内增大淋巴结。结论肺腺癌的MSCT表现如肿瘤大小、分化程度、CT强化程度、毛刺征均是胸内淋巴结增大的重要影响因素。

MSCT联合磁共振对老年膝关节隐匿性骨折的诊断效能分析

目的探讨多层螺旋CT(MSCT)联合磁共振诊断老年人膝关节隐匿性骨折效能。方法选取2021年3月至2024年1月收治的疑似老年人膝关节隐匿性骨折患者120例作为研究对象,入院后均行MSCT及磁共振检查,比较MSCT、磁共振单独及联合检查对老年人膝关节隐匿性骨折诊断价值。结果38例复查MSCT,伤后第2周检出6例,第3周检出17例,第4周检出13例,>4周检出2例;联合检查诊断老年人膝关节隐匿性骨折的敏感度100.00%(109/109)、准确度100.00%(120/120)高于MSCT 84.17%(101/120)、91.67%(110/120)和磁共振85.83%(103/120)、94.17%(113/120),漏诊率0(0/109)低于MSCT的7.34%(8/109)、磁共振5.50%(6/109)(P<0.05)。结论MSCT、磁共振联合诊断可有效提高老年人膝关节隐匿性骨折诊断准确率,为临床早期诊断提供参考。

Diagnostic Value of Spiral CT Chest Enhanced Scan in Adult with Active Pulmonary Tuberculosis

Aim:To explore the diagnostic value of spiral CT chest enhanced scan for adults with active pulmonary tuberculosis.Methods:The clinical data of 60 adult patients with active pulmonary tuberculosis who were treated in our hospital from January 2018 to November 2019 were retrospectively analyzed.All patients underwent conventional chest radiography and spiral CT chest enhanced scan.The number of tuberculosis diagnosis,the detection rate of special site lesions,and the detection rate of active pulmonary tuberculosis signs by the two methods were compared.Results:In 60 patients,the pathological results confirmed the existence of 75 tuberculosis lesions.The detection rate of spiral CT was 98.67%,which was not statistically significant compared with the detection rate of 92.00%(P>0.05)in the conventional chest X-ray.The detection rate of spiral CT enhanced scans for tuberculosis lesions in special sites was 100.00%,which was significantly higher than that of conventional chest X-ray of 7.69%,and the accuracy rate of active pulmonary tuberculosis signs was 98.85%higher than that of conventional chest X-ray of 79.31%.P<0.05).The difference was statistically significant(P<0.05).Conclusion:Spiral CT chest enhanced scan can not only find special tuberculosis lesions that cannot be detected by conventional chest radiography,but also accurately determine active pulmonary tuberculosis in adults,which is of high diagnostic value.

自发性孤立性肠系膜上动脉夹层患者的临床特点、MSCT征象及预后分析

目的探究自发性孤立性肠系膜上动脉夹层(SISMAD)患者临床特点、MSCT征象,并分析预后。方法选择北京怀柔医院2015年11月-2022年11月期间收治的85例SISMAD患者为研究对象,收集患者临床资料并给予MSCT检查,按照是否有临床症状将患者分为无症状组(n=16)和有症状组(n=69),比较两组临床特点、多层螺旋CT(MSCT)征象及预后。结果无症状组、有症状组SISMAD患者肠呜音减弱、合并高血压、合并有同型半胱氨酸升高、长期吸烟史等临床特点差异有统计学意义(P<0.05)。无症状组、有症状组SISMAD患者血栓形成、夹层解剖长度、入口直径、真腔直径、真腔狭窄程度、Yoo分型等MSCT征象差异有统计学意义(P<0.05)。16例无症状患者10例未经特殊处理仅观察,5例采取内科保守治疗,1例采取腔内治疗,病情均得到有效控制;69例有症状患者46例采取内科保守治疗,2例腹痛加剧转为腔内治疗,16例采取腔内治疗,7例采取旁路搭桥、内膜切除等外科手术治疗,病情均恢复良好。结论SISMAD临床表现一般以腹痛为主,但也存在部分无症状患者,血栓形成、夹层解剖长度、入口直径、真腔直径、真腔狭窄程度、Yoo分型有助于评价SISMAD病情严重程度,并指导后续治疗方案制定。

进展期胃癌胃壁浸润CT“分层征”的病理学基础

目的 探讨进展期胃癌胃壁浸润CT分层征象的病理学基础。方法 31例病理证实的进展期胃癌 ,均作了胃肠造影及螺旋CT扫描。术后胃标本牵拉固定后 ,放射状象限取材 ,作病理对照观察。结果 动脉期、非平衡期及平衡期可见病灶分层情况分别为 35 .5 %、19.4%及 12 .9%。①病灶分两层 ,其低密带清晰 ,密度均一者有 11例 ,系黏膜下层癌细胞浸润及纤维组织广泛增生 ,使黏膜下层致密、增厚 ,肌层结构完整 ,仅在肌束间有癌巢形成。②病灶虽分两层 ,但其低密带不均 ,内可见条索影者 7例 ,为黏膜下层坏死、肿瘤细胞分泌的黏液及少量纤维组织增生构成。③病灶分三层者 2例 ,分四层者 1例 ,CT表现为“靶征” ,是癌组织树根状从黏膜下层浸润至肌层的肌纤维束之间所致。结论 进展期胃癌螺旋CT三期扫描可清楚地观察病灶分层 ,与病理对照 。

胃癌MSCT扫描中征象学改变的初步小结

目的:探讨胃癌CT增强扫描中出现的具有共同特征的征象学改变。材料和方法:79例经胃镜诊断为胃癌并经手术证实的患者在术前进行多层螺旋CT(MSCT)平扫及双期增强(延迟时间为20s和70s),观察图像中共同的增强特点并进行小结。结果:59例病例(75%)增强后胃壁出现了“白线”和“晕”的征象。结论:胃癌CT增强图像中可以发现一些共同的征象学改变,可能对提高胃癌CT诊断准确率有所帮助。

原发性支气管肺癌中医证型与螺旋CT表现及病理分型的相关性分析

目的:探讨原发性支气管肺癌中医证候与临床分期及病理分型相关性,为支气管肺癌中医证候分型提供客观指标。方法:回顾性分析68例原发性支气管肺癌(以下简称肺癌)中医证候与临床分期及组织病理学类型,研究各证候与临床分期及病理分型间的相关性。结果:四种证候中医证型和组织病理学类型尚有统计学联系;不同的中医证候的胸腔积液征具有统计学意义,其他空泡征、毛刺征等MSCT征象与中医证候尚未具有统计学意义。结论:原发性支气管肺癌MSCT表现存在着一定的相关性,统计结果对确定肺癌临床证候分型标准有重要意义,可作为临床辨证论治及疗效评价的依据。

周围型肺癌叶间胸膜凹陷征的64层MSCT VR及Colored lit表现

目的研究周围型肺癌叶间胸膜凹陷征的64层螺旋CT表现及其在容积再现(VR)及色彩点亮技术(Colored lit)重建图像的各种表现。资料与方法搜集经手术、病理证实的周围型肺癌48例,根据肿瘤大小及生长部位,总结其叶间胸膜凹陷的不同螺旋CT表现,并分析其形成的原因。结果根据肿瘤发生的部位及其与胸膜结构的空间位置关系将周围型肺癌的叶间胸膜凹陷征归纳为3种主要表现:(1)典型表现:横断面上见一组有一定形态变化规律的胸膜凹陷改变,叶间胸膜呈皱缩改变,共32例,占67%。(2)线条状影:水平裂和斜裂胸膜凹陷,表现为曲线状,共5例,占10%。(3)结节状、团块状影:周围型肺癌与叶间胸膜关系密切,整体呈结节状、团块状影,共11例,占23%。结论 64层螺旋高分辨率CT,尤其是容积再现(VR)及色彩点亮技术(Colored lit)重建图像有利于周围型肺癌叶间胸膜凹陷征的显示。

多层螺旋CT在肺动脉栓塞诊断中的价值研究

目的:评价多层螺旋CT在肺动脉栓塞临床诊断中的应用价值。方法:选取61例肺动脉栓塞患者作为研究对象,对61例患者实施多层螺旋CT诊断,统计本组患者肺动脉或分支栓塞的检出率,观察本组患者的CT表现。结果:结合其他影像学诊断方法进行诊断,本组61例患者累计出现201支肺动脉或分支栓塞,多层螺旋CT诊断的肺动脉或分支栓塞检出率为94.03%。多层螺旋CT影像学资料显示本组患者中,60例患者有明显的肺动脉栓塞直接征象(肺动脉内充盈缺损),1例患者无明显的肺动脉栓塞直接征象,54例患者有明显的间接征象(“马赛克征”、支气管动脉扩张、肺动脉高压等),诊断准确率为96.72%。结论:多层螺旋CT诊断肺动脉栓塞,无创、操作简单、能够直接显示肺实质情况,图像资料清晰,诊断准确率高,具有临床应用价值。

MSCT扫描卵巢血管蒂征像在鉴别诊断卵巢肿瘤来源中的可行性研究

目的探讨多层螺旋CT(MSCT扫描卵巢血管蒂征像在鉴别诊断卵巢肿瘤来源中的可行性。方法将2018年1月至2018年12月于我院就诊治疗的136例盆腔肿块的患者的临床病例及影像学资料进行回顾性整理分析,所有患者入院后均行MSCT检查,由2名资深影像诊断医生对其检查结果进行诊断,并以手术病理检查结果为标准,总结MSCT中卵巢血管蒂征象的有无。结果 58例患者为卵巢源性肿瘤,余78例为非卵巢源性肿瘤;卵巢源性肿瘤患者其卵巢血管蒂征象检出阳性率(82.76%)显著高于非卵巢源性肿瘤患者的卵巢血管蒂征象检出阳性率(41.03%)(P<0.05);以术后病理检查结果为金标准,MSCT检查诊断卵巢源性肿瘤的灵敏度、特异度和准确率分别为81.13%、81.93%和81.62%,进行kappa一致性检验示MSCT检查盆腔卵巢肿块为卵巢源与病理学诊断比较具有统计学意义(P<0.05),提示诊断性较好;卵巢血管蒂征象诊断卵巢源性肿瘤的灵敏度、特异度和准确率分别为86.21%、69.23%和76.47%;MSCT检查中而卵巢动脉难以显示,两侧卵巢静脉可清晰显示,进一步增强扫面于静脉期显示正常卵巢呈卵圆形或杏仁状,卵巢悬韧带可清晰显示,且较卵巢静脉稍粗,表现为扇形增宽与卵巢相连的软组织密度影,部分患者可见卵巢血管蒂征。结论 MSCT检查可清晰显示卵巢肿瘤特征以及卵巢血管蒂征象,该征象对卵巢源性肿瘤的诊断具有较好的灵敏度和特异度,有助于卵巢肿瘤的定性诊断。

低剂量螺旋CT征象联合MDSCs对良恶性孤立性肺结节的鉴别诊断价值

目的探讨低剂量螺旋CT征象联合外周血髓源性抑制细胞(MDSCs)对初诊孤立性肺结节(SPN)性质的鉴别诊断价值。方法选取2019年1月—2021年12月检出的SPN 185例,均行低剂量螺旋CT扫描,比较恶性、良性结节的影像学特点,采用多因素Logistic回归分析结节性质的影响因素,采用受试者工作特征(ROC)曲线及曲线下面积(AUC)分析低剂量螺旋CT征象及MDSCs鉴别诊断结节性质的价值。结果恶性结节形态不规则、血管集束征、毛刺征、空气支气管征、棘状突起、胸膜凹陷征、分叶征所占比例高于良性结节(P<0.01)。恶性结节最长毛刺长度短于良性结节,MDSCs高于良性结节(P<0.01)。结节形态、血管集束征、毛刺征、空气支气管征、棘状突起、胸膜凹陷征、分叶征、最长毛刺长度、MDSCs均与结节性质相关(P<0.01)。ROC曲线显示,低剂量螺旋CT征象联合诊断结节性质的AUC最大,为0.907。结论良恶性SPN患者低剂量螺旋CT检查中结节形态、血管集束征、毛刺征、空气支气管征、棘状突起、胸膜凹陷征、分叶征、最长毛刺长度等征象及MDSCs存在明显差异,联合鉴别诊断结节性质具有较高价值。

64排螺旋CT诊断成人肠套叠的征象分析

目的针对成人肠套叠的64排螺旋CT征象进行分析,从而评价64排螺旋CT对成人肠套叠的诊断价值。方法对牡丹江医学院红旗医院19例经手术证实为成人肠套叠的患者的64排螺旋CT资料进行回顾性分析,男12例,女7例,年龄25～60岁(平均42.5岁)。结果主要直接征象有:①同心圆征或彗星尾征,17例;②血管卷入征,10例;③脂肪征,14例。主要间接征象有:①靶环征,3例;②肠梗阻,16例;③其他征象如邻近肠系膜或筋膜浸润,4例。结论 64排螺旋CT对诊断成人肠套叠具有重要价值,诊断成人肠套叠的特异性征象是同心圆征、血管卷入征和脂肪征。