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为了解重症肝炎、肝炎后肝硬变的肾脏病理改变,我们对本院1980~1992年重症肝炎、肝炎后肝硬变死亡患者的尸检结果进行分析,结果报告如下。1临床资料与结果1.1一般情况118例患者中,男92例,女26例。年龄1~77岁,其中小儿11例,老年患者28例。1.2诊断标准重症肝炎患者均符合1990年全国病毒性肝炎会议诊断标准,包括急性重症肝炎8例,亚急性重症肝炎21例,慢性重症肝炎55例。肝硬变患者34例,均尸检证实。1.3临床与实验室检查本组患者生前有明确泌尿系病史者仅4例,其中1例为慢性肾小球肾炎,1例输尿管结石,2例慢性肾盂肾炎。118例患… 相似文献
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出血性脑梗塞(28例CT分析) 总被引:2,自引:0,他引:2
本文对28例出血性脑梗塞的CT资料做了详细分析。其中19例作过2 ̄7次CT扫描。本文首次发现,部分病例其梗塞灶内出血是反复发生的,呈逐渐增多或此起彼伏的形式。结合文献对出血性脑梗塞的有关问题进行了讨论。 相似文献
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小儿外伤性脑血管闭塞(附10例报告) 总被引:7,自引:0,他引:7
目的:研究小儿外伤性脑血管闭塞的临床与CT表现。探讨其形成的机理及CT诊断价值。方法:对10例有明确颅外伤及伤后肢体偏瘫等体征的幼儿进行了CT扫描观察并记录。结果:2例正常,1例大面积脑梗塞、7例腔隙性脑梗塞(1例于丘脑、6例于内囊)。结论:外伤性腔隙性脑梗塞在幼儿中常见,而且大部分病变都发生在内囊(6∶1)。其产生的机理可能是脑外伤引起脑血管痉挛性闭塞所致脑缺血性坏死。CT扫描对其诊断的确立具有重要价值 相似文献
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大脑中动脉狭窄相关的脑梗塞20例临床分析 总被引:1,自引:0,他引:1
目的:分析了20例大脑中动脉(MCA)狭窄相关的脑梗塞患者的临床中风模式与神经影像(CT/MRI)特点。方法;对经颅多普勒超声(TCD)等确诊的20例MCA狭窄的脑梗塞患者进行临床与神经影像的对比分析,结果:20例中,腔隙综合征10例(50%),CT/MRI显示无病灶2例(10%),基底节和内囊腔隙性脑梗塞8例(40%)非腔隙综合征10例(50%),CT/MRI显示MCA皮层无梗塞9例(45%), 相似文献
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脑梗塞同侧功能障碍的CT分析 总被引:2,自引:0,他引:2
脑梗塞是急性脑血管闭塞引起脑缺血所造成的脑组织坏死,自CT问世以来,此病诊断准确率明显提高。文献报道脑梗塞对侧功能障碍多见,同侧功能障碍较少见[1,2]。本文分析26例脑梗塞引起同侧功能障碍的CT表现,并讨论其发病有关因素。1材料与方法搜集我院199... 相似文献
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目的:分析脑梗塞的MR表现,部分与CT对比,以探讨FMR在诊断该上的价值,材料与方法;对5例脑梗塞病例的MR片进行回顾性分析。结果:44例表现为侧脑室旁、基底节及内囊区单个或多个塞灶,直径约5-20mm,脑干梗塞4例,发生于脑叶的大片状梗塞4例,小脑半球梗塞2例,出血性梗塞1例,伴脑萎缩10例,室旁水肿5例。结论:MR能较CT更早发现脑梗塞,能较好显示皮质受累程度及脑干,小脑梗塞,由于多方位成像。 相似文献
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Y Itai K Ohtomo T Kokubo M Minami H Yoshida 《Journal of computer assisted tomography》1988,12(6):971-975
Four cases of postnecrotic liver scar were examined by dynamic CT or MR imaging or both. Postnecrotic scars appeared as low-density areas on plain CT, showed marked and prolonged enhancement on single level dynamic CT, and became isodense on postcontrast scan. On T2-weighted images, postnecrotic scar were as hyperintense as the spleen. Postnecrotic liver scar is an example of localized attenuation or intensity difference not corresponding to mass lesion. It should be distinguished from mass lesions associated with lobar or segmental attenuation (or intensity) difference of the liver as well as nonmass lesions such as irregular fatty infiltration, radiation hepatitis, and hepatic infarction. 相似文献
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F H Doyle J M Pennock L M Banks M J McDonnell G M Bydder R E Steiner I R Young G J Clarke T Pasmore D J Gilderdale 《AJR. American journal of roentgenology》1982,138(2):193-200
Nuclear magnetic resonance (NMR) scans of the liver were obtained in 12 normal volunteers and 32 patients using a whole-body machine developed by Thorn-EMI Ltd., and the results were compared with x-ray computed tomography (CT). Two types of NMR scan, saturation-recovery and inversion-recovery, were performed in order to obtain values for the spin-lattice relaxation time, T1. Although the saturation-recovery scans show little soft-tissue detail, the inversion-recovery scans demonstrated the interlobar fissure, hepatic veins, portal veins, bile ducts, and gallbladder. In comparison with CT (Siemens Somatom 2), both types of NMR scan showed some blurring due to respiratory movement but much less linear artifact across the liver from the air-fluid interface in the stomach. Focal disease within the liver was demonstrated by both CT and NMR, although an area of focal atrophy and another of hepatic infarction were only recognized with NMR. In diffuse disease the pattern varied. In steatosis CT was virtually diagnostic, while NMR showed no specific features. In hemochromatosis, hepatitis, eight cases of cirrhosis, and one of Wilson disease, both techniques showed abnormalities of varying specificity. In two cases of cirrhosis and one of primary biliary cirrhosis, only the NMR scan was abnormal. Nuclear magnetic resonance images are now sufficiently anatomically detailed to permit serious comparisons with technically advanced computed tomography. The information revealed is fundamentally different and can be expected to have some diagnostic utility. 相似文献
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目的:探讨急性酒精性肝炎的CT影像特征。方法:回顾性分析经临床、化验、CT综合诊断的70例急性酒精性肝炎病例的CT影像资料;本组病例肝功能化验均无甲、乙肝炎表现。结果:急性酒精性肝炎CT影像表现为:点状、片状低密度急性肝损害征象以及胆汁淤积、肝内胆管扩张,重者可出现肝组织坏死液化、肝肿大。急性酒精性肝炎的并发症有:肝硬化、脾大、脂肪肝、腹水。根据急性肝损害的严重程度,分为轻度39例,中度23例,重度8例。治疗后复查CT,除2例死亡外,其他所有病例的急性肝损害征象可恢复。其并发症酒精性肝硬化为不可逆病变。结论:CT能够显示急性酒精性肝炎的影像学特征。 相似文献
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大脑中动脉高密度征的动态CT表现与临床 总被引:3,自引:0,他引:3
目的探讨大脑中动脉高密度征(HMCAS)在大脑中动脉(MCA)供血区超急性期梗死的诊断价值。方法对46例MCA供血区超急性期脑梗死(发病6h内)的CT征象及临床表现进行分析,并定期复查CT观察其动态变化。结果MCA供血区超急性期脑梗死46例中表现为HMCAS者32例(71.1%),临床均为完全前循环梗死(TACI),25例死亡(78.1%),其中HMCAS进展且合并MCA点状征的14例中12例(85.7%)死亡,其余均遗留严重神经功能缺损;而无HMCAS的14例中8例为部分前循环梗死(PACI),6例为TACI,仅2例(14.3%)死亡,两者差异具有统计学意义(P<0.01)。3例HMCAS在复查随访时消失,病人病情好转且均转化为出血性脑梗死。结论大脑中动脉高密度征的动态CT变化有助于MCA供血区超急性期脑梗死的诊断及预后判断。 相似文献
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非潜水性骨梗死影像学诊断 总被引:1,自引:0,他引:1
目的 探讨非潜水性骨梗死的影像学表现。方法 7例患中,平片 CT MRI ECT检查、平片 CT、平片 MRI检查各2例;单纯拍平片1例。结果 7例共累及14骨。早期平片、CT可无异常发现,亦可见病变区密度不均或轻度骨膜反应。MRI示病灶中心T1WI呈等骨髓脂肪信号,边缘呈迂曲的低信号带;该带T2WI可分2层。整个坏死区呈地图样改变。ECT显示为中央放射性缺损,边缘放射性浓聚。晚期平片、CT扫描病灶呈类环形、花边状或条状致密影。MRI、ECT此期表现无特征。结论 对早期病例,MRI是最好的检查手段。晚期病例检查应首选平片和CT。 相似文献
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超急性脑梗死首诊的多层螺旋CT表现 总被引:1,自引:0,他引:1
目的 探讨超急性期脑梗死的多层螺旋CT(multislice spiral computed tomography, MSCT)平扫表现.方法 回顾分析确诊的 19例超急性脑梗死病例,所有病例发病后1~6 h内进行第1次MSCT平扫检查,经发病后3 h~5 d复查MSCT或MRI确诊,观察分析MSCT平扫征象.结果 首次诊断超急性脑梗死17例,可疑诊断2例.MSCT平扫阳性表现主要有脑实质低密度征19例,局部脑肿胀征13例,脑动脉高密度征3例.结论 MSCT平扫对超急性脑梗死具有较高诊断价值. 相似文献
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CT and MR imaging of radiation hepatitis 总被引:9,自引:0,他引:9
The authors describe two cases of radiation hepatitis evaluated by magnetic resonance imaging and CT with CT angiography (CTA) additionally performed in one patient. On CT the radiation hepatitis appeared as sharply demarcated region of lower attenuation than the adjacent normal liver. The region of radiation hepatitis demonstrated decreased perfusion in the portal venous phase of CTA, and 4 min delayed images following CTA showed increased density or relative increased accumulation of contrast. Magnetic resonance in both cases showed that the area of low density on CT had high signal on the T2-weighted image and had increased water content as determined by proton spectroscopic imaging method. 相似文献
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王学成 《实用医学影像杂志》2005,6(5):246-248
目的 探讨成人外伤性脑梗死的影像特点.方法 分析30例成人外伤性脑梗死的临床与CT资料.结果 脑叶梗死17例,基底节-内囊区梗死13例,伴蛛网膜下腔出血15例,硬膜下血肿9例,硬膜外血肿3例,脑内血肿3例,脑疝5例,出血性脑梗死2例.结论 CT发现成人外伤性脑梗死的最佳时间是外伤后24 h~6 d,梗死多伴有颅脑损伤的其他CT表现,临床结合动态CT观察是诊断成人外伤性脑梗死的有效方法. 相似文献
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目的:妊娠子痫并脑血管病并非少见,且脑水肿与脑梗塞的早期CT表现极为相似,早期诊断,及时治疗至关重要,本旨在分析各并发症的CT特点,重点讨论脑水肿与早期脑梗塞的鉴别诊断。材料与方法:妊娠子痫合并脑血管病共23例,其中脑水肿12例,脑梗塞7例,脑内血肿4例,所有病人发病后急诊作CT平扫,3例行增强扫描,15例病人复查CT。结果:脑水肿CT表现为双侧顶、额、枕叶较为对称的片状低密度区,以顶叶为甚,脑梗塞CT表现类似脑水肿,脑内血肿CT表现均为皮层下血肿。结论:CT检查妊娠子痫并脑血管病具有迅速、准确的诊断价值。 相似文献
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The relationship between cerebral infarction and angiographic characteristics in childhood moyamoya disease 总被引:2,自引:0,他引:2
Mugikura S Takahashi S Higano S Shirane R Kurihara N Furuta S Ezura M Takahashi A 《AJNR. American journal of neuroradiology》1999,20(2):336-343
BACKGROUND AND PURPOSE: In childhood-onset moyamoya disease, the angiographic disease process of stenoocclusive lesions is progressive, and cerebral infarctions often develop as a result of ischemia. Our purpose was to determine how the severity of stenoocclusive lesions in the anterior and posterior circulations affects the distribution of cerebral infarction in patients with childhood-onset moyamoya disease. METHODS: In 69 patients with childhood-onset moyamoya disease, angiograms were reviewed for stenoocclusive lesions, and CT scans, MR images, or both were reviewed for the sites and extent of cerebral infarction. The relationship between the angiographic and CT/MR findings was examined. RESULTS: The prevalence and degree of stenoocclusive lesions of the posterior cerebral artery (PCA) significantly correlated with the extent of lesions around the terminal portion of the internal carotid artery (ICA). The prevalence of infarction significantly correlated with the degree of stenoocclusive changes of both the ICA and PCA. Infarctions tended to be distributed in the anterior borderzone in less-advanced cases, while in more advanced cases lesions were additionally found posteriorly in the territory of the middle cerebral artery, the posterior borderzone, and the PCA territory. CONCLUSION: Our results indicate that progressive changes of the anterior and posterior circulations are associated with the distribution of cerebral infarction, culminating in a patchily disseminated or honeycomb pattern of infarction on CT and MR studies in late stages of the disease. 相似文献