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81.
颅面部的 CT扫描检查主要包括颅脑面部上、下颌骨、中耳、内耳、鼻窦、眼眍、眼球及颞骨茎突等部位的扫描检查 ,上述部位的扫描检查的位置的摆法 ,层面的厚度、间距 ,扫描时间及螺距等参数的选择及扫描后图像的后处理工作对检查结果的诊断至关重要。上述参数任意一个选择不当及 相似文献
82.
支气管结核48例临床分析 总被引:2,自引:2,他引:0
目的:探索支气管结核的临床特征及诊断方法。方法:分析48例1995-2001年支气管结核临床表现,影像学及纤支镜检查结果。结果:48例患者中青年女性明显高于其他组占66.7%(32/48),咳嗽42例(87.5%),咯血10例(20.8%),胸痛13例(27%),气促28例(58.3%),发热12例(25%),乏力盗汗19例(39.5%)。胸片及CT示:肺内浸润渗出性病灶32例(66.7),空调6例(12.5%),肺不张20例(41.7%),阻塞性肺炎18例(37.5%),肺门及纵隔淋巴结肿大9例(18%),痰涂片结核菌阳性率为37.5%,纤支镜刷检结核菌阳性率为45.8%,组织活检中57.5%证实为结核。结论:当有支气管结核临床表现时,应行胸部X线、CT检查,有条件者行张支镜检查,纤支镜检查是诊断支气管结核最重要的方法。 相似文献
83.
4例颈静脉球瘤的影像学诊断 总被引:1,自引:0,他引:1
目的:分析颈静脉球瘤的各种影像学表现。重点讨论此瘤各种影像学检查的价值与限度。方法:报道4例经手术病理证实的颈静脉球瘤,并结合文献对其影像学表现及其各种检查方法进行分析。结果:颈静脉球瘤的影像学检查方法颇多;其表现各具特点,尤其是高分辨率薄层CT及MR表现颇具特征性,能为此瘤术前诊断提供可靠依据。结论:颈静脉球瘤的各种影像学检查方法都有一定的价值和限度。应恰当选择,合理应用,可取得理想的诊断结果。尤其是高分辨率薄导CT及MR检查具有明显的优势,应作为术前常规和必需的检查项目。 相似文献
84.
CT图象的面罩式覆盖法定量诊断脂肪肝 总被引:1,自引:0,他引:1
目的 探讨脂肪肝的脂肪浸润程度的无创性检查方法及临床意义。方法 用 GE 30 0 0 I CT机扫描 36例脂肪肝患者肝脏、脾脏 ,用 CT机配备软件处理数据 ,面罩式覆盖法计算肝脏各个层面的脂肪面积与对应层面肝脏面积 ,并得出比值 (脂肪浸润指数 )。用生化仪检测肝功能指标。肝穿刺病理检测肝组织内脂肪浸润程度。结果 平均脂肪浸润指数与肝功能状态呈显著正相关 ,亦与肝穿刺的病理结果呈正相关 (r=0 .86 5 ,P<0 .0 1)。结论 CT图象面罩式覆盖法对脂肪浸润的定量分析是诊断脂肪肝可靠的无创性检查方法 ,对非均匀性脂肪肝该方法优于肝穿刺 相似文献
85.
Infantile myofibromatosis is a mesenchymal tumor most commonly seen in infancy. The tumors have a variable appearance on
CT/MR and often simulate a more aggressive neoplasm. This report describes CT/MR findings in cases of infantile myofibromatosis
with pathologic correlation. Discussion into the success of imaging in suggesting the correct diagnosis is also addressed.
Infantile myofibromatosis is a mesenchymal disorder of infancy characterized by the presence of tumorous nodules in the skin,
subcutaneous tissue, muscle, viscera, and bone. Cases of solitary and multiple lesions have been described. We present the
clinical, histologic, and radiographic findings of one case of the solitary form of infantile myofibromatosis that was recently
diagnosed at our hospital. 相似文献
86.
C. H. van der Meyden J. F. K. de Villiers B. D. Middlecote J. Terblanchè 《Neuroradiology》1994,36(3):221-223
A 9-year-old boy presented with a subacute history of optic neuritis followed by brainstem involvement, with fever and a lymphocytic pleocytosis in the cerebrospinal fluid. Gadolinium-enhancing ring lesions were demonstrate in the white matter of the cerebrum, brainstem and cerebellum on day 17 of the illness, all appearing simultaneously as part of a monophasic illness. A parietal lesion exerted mass effect. Needling and biopsy yielded no evidence of a pyogenic lesion, tumour or tuberculosis and showed vasculitis. There was insufficient material for myelin staining. Dexamethasone therapy lead to rapid improvement of the radiological lesions: MRI and CT on day 34 of the illness showed complete clearing of the lesions except for residual abnormality at the biopsy site. 相似文献
87.
SM6是我国检测E1Tor霍乱弧菌是否带有溶源性噬菌体的指示菌株。江苏的6株E1Tor霍乱弧菌和SM6都属于噬菌体-生物分型的1d型,而在噬菌体分型中SM6为1/2型,江苏的6株菌株则为1/2/3型;霍乱毒素(CT)基因测定也表明两者的不同,SM6不含CT基因,江苏的6株都含有CT基因,显示噬菌体分型可将噬菌体-生物分型的型别进一步划分,SM6的特性也为霍乱的进一步研究提供了资料。 相似文献
88.
目的:探讨螺旋CT血管造影(Spiral CT angiography,SCTA)技术,以期提高SCTA造影的质量。材料与方法:采用Somatom Plus 4螺旋CT扫描系统对10例病人行腹部SCTA检查。扫描技术和造影剂参数按病变范围和性质而定,三维重建采用最大强度投影法(MIP)或表面阴影显示法(SSD)或弯曲平面重建法(CPR)。结果:SCTA检查技术能可靠地显示血管形态和病变,评价腹部肿瘤与邻近血管关系。结论:SCTA是无创伤性的血管成像术,在很大范围可替代创伤性的血管造影。 相似文献
89.
T. J. Vogl S. Steiner B. Schnell A. Gerbes C. McMahon C. Wilimzig J. Lissner 《European radiology》1992,2(4):310-316
Twenty-nine patients with diffuse liver disease were examined by ultrasound, CT and MRI. MRI was performed using T1- and T2-weighted spin-echo sequences as well as fast gradient-echo-sequences. The paramagnetic contrast agent Gd-DTPA was applied intravenously (0.1 mmol/kg). in patients with hepatitis, MRI could be used in guiding liver biopsies as inflammatory changes were clearly delineated. CT and ultrasound were superior to MRI in the detection of focal or diffuse fatty degeneration. On the other hand MRI was more helpful in differentiating fatty changes and neoplasm. In liver cirrhosis, fibrotic changes were most clearly demonstrated by MRI. In patients suffering from hemochromatosis MRI offers advantages over CT and ultrasound in the diagnosis and follow up due to the paramagnetic properties of iron, resulting in a reduction in signal intensity. In patients with Wilson's disease a characteristic pattern of parenchymal changes was seen. Administration of Gd- DTPA contributes additional information about perfusion conditions in the liver parenchyma, however this information was not of diagnostic relevance in the cases we studied.
Correspondence to: T.J. Vogl 相似文献
90.
A. Larsson Ch. Jensen M. Bilting S. Ekholm H. Stephensen C. Wikkelsö 《Acta neurochirurgica》1992,117(1-2):15-22
Summary Thirteen patients with normal pressure hydrocephalus were operated upon with an externally manoeuvrable shunt system (Sophy SU8) in order to investigate its influence on clinical outcome, intracranial pressure and cranial CT parameters. The opening pressure was set at high at surgery and lowered stepwise at intervals of three months to medium and low. The clinical condition, intracranial pressure and cranial CT parameters were examined at the end of the 3 months interval on each pressure level.The patients improved within the first 3 months inspite of an unchanged mean intracranial pressure and remained in a stable clinical condition during the rest of the study period. The intracranial pressure was significantly reduced at 9 months. The ventricular index, Evans index, temporal horn and third ventricle width were reduced 3 months post-operatively and did not change significantly during the rest of the study. The pre-operative third ventricle width was correlated to high psychometric test results after shunt surgery. Reduction in ventricular index, Evans index and third ventricle width after surgery correlated to improvement in psychometric scoring.The clinical improvement after shunt surgery for normal pressure hydrocephalus is seen within 3 months and is independent of the adjusted valve pressure. 相似文献