Aktuelle Radiologie最新文献_第5页

[Solid craniopharyngioma in the 3rd ventricle--differential diagnostic aspects]. 【第三脑室实体颅咽管瘤——鉴别诊断】。

Aktuelle Radiologie Pub Date : 1998-03-01

H Urbach, E Behrens, A von Deimling, J Reul

引用次数: 0

[What is the role of Doppler color sonography associated with echo-signal enhancing levovist in complementary breast diagnosis?]. 多普勒彩色超声联合超声信号增强在乳腺补充诊断中的作用是什么?

Aktuelle Radiologie Pub Date : 1998-03-01

C Grüner, A Schönwälder, R Schulz-Wendtland, N Lang, W Bautz

{"title":"[What is the role of Doppler color sonography associated with echo-signal enhancing levovist in complementary breast diagnosis?].","authors":"C Grüner, A Schönwälder, R Schulz-Wendtland, N Lang, W Bautz","doi":"","DOIUrl":"","url":null,"abstract":"At the women's hospital of the University of Erlangen we performed a prospective clinical study to evaluate the use of color Doppler imaging supported by the new echo contrast agent Levovist in comparison to clinical examination, B-mode sonography, mammography, and MRI. In 40 patients the sensitivity and specificity of each method was estimated in predicting the dignity of palpable or mammographically detectable tumors of the breast. Prior to and after administration of Levovist we recorded the number of vessels, the PI, RI, SD-ratio, and maximum flow velocity after correction of the angle. Color Doppler imaging of the tumor and the surrounding tissue was documented on video tape for five minutes after the administration of Levovist. We measured the time until an increase and decrease in color signal was detectable. The following sensitivities/specificities were found: clinical examination 57.1% (12/21)/73.7% (14/19), B-mode sonography 100% (21/21)/84.2% (16/19), mammography 100% (21/21)/89.5% (17/19) and MRI 92.3% (14/15)/78.6% (15/18). Without the contrast agent color Doppler imaging could not differentiate between malignant and benign lesions. There was no significant difference in the perfusion of benign and malignant tumors. However, after the administration of Levovist, there appeared to be a significant difference for SD-ratio. With a cut-off-level of 3.5 we found a sensitivity/specificity of 85% (17/ 20)/78.6% (11/14) for the Doppler method. There was a weak correlation between the time of appearance of the augmented Signal in color Doppler and the velocity of enhancement of the contrast agent in MRI (n = 24, r = 0.47, p = 0.02). Only with the use of a contrast agent was color Doppler ultrasound able to support the other methods in pre-operative differentiation of benign and malignant lesions in the breast.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 2","pages":"58-62"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20513636","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Aortic rupture and retroperitoneal bleeding im Behcet disease]. [Behcet病的主动脉破裂和腹膜后出血]。

Aktuelle Radiologie Pub Date : 1998-03-01

M Born, P Decker, G Layer, J Heider, H Schild

引用次数: 0

[Possibilities of follow-up imaging after implantation of a carbon fiber-reinforced hip prosthesis]. [碳纤维增强髋关节假体植入后随访成像的可能性]。

Aktuelle Radiologie Pub Date : 1998-03-01

T Krüger, C Alter, H Reichel, A Birke, W Hein, R P Spielmann

{"title":"[Possibilities of follow-up imaging after implantation of a carbon fiber-reinforced hip prosthesis].","authors":"T Krüger, C Alter, H Reichel, A Birke, W Hein, R P Spielmann","doi":"","DOIUrl":"","url":null,"abstract":"Introduction: There are many problems in the radiological diagnosis of aseptic loosening in total hip arthroplasty. Computed tomography (CT) and magnetic resonance tomography (MRT) are not usable for metallic implants (stainless steel, cobalt alloy, titanium alloy).Material and methods: From April 1993 to December 1993 15 CFRP non-cemented hip prostheses have been implanted. In a prospective clinical study plane radiographs, CT and MRT have been analysed.Results: Three stems were revised (1 femoral fracture, 1 severe thigh pain, 1 aseptic loosening). CFRP are not visible in plane radiographs. There was a complete (two-third of the cases) or nearly complete (one-third of the cases) small sclerotic interface between the prosthesis and the bone, these were apparent in CT and MRT in stable implant cases and did not have any clinical correlations.Discussion: The small sclerotic interface is quite different in comparison to so called \"Reactive Lines\". In one case of aseptic loosening there was an interposition of soft tissue between prosthesis and bone in MRT and CT. CFRP inaugurates new diagnostic possibilities in aseptic loosening of hip prosthesis and in tumour surgery too.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 2","pages":"81-6"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20513640","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Detection of aneurysm in subarachnoid hemorrhage--CT angiography vs. digital subtraction angiography]. [蛛网膜下腔出血动脉瘤的检测——CT血管造影与数字减影血管造影]。

Aktuelle Radiologie Pub Date : 1998-03-01

W Röhnert, V Hänig, V Hietschold, N Abolmaali

{"title":"[Detection of aneurysm in subarachnoid hemorrhage--CT angiography vs. digital subtraction angiography].","authors":"W Röhnert, V Hänig, V Hietschold, N Abolmaali","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The value of CT-angiography (CT-A) for the visualization of intracranial aneurysms was more closely defined by comparison with digital subtraction angiography (DSA).Methods: Over a period of 18 months a total of 106 patients in whom a subarachnoidal hemorrhage had been detected on native CT were examined in parallel by spiral CT and DSA. CT-angiography was performed under standardized parameters and included processing with 3D surface reconstructions.Results: In 64 patients (60.4%) a total of 72 aneurysms were detected. In four cases (6.2%) there were two and in two cases (3.1%) even three aneurysms. The findings of DSA and CTA agreed in 98 cases (92.5%). In four patients (3.8%) a false negative result was obtained in CTA and the initial DSA.Conclusions: Digital subtraction angiography must still be considered as the gold standard in the diagnosis of cerebral aneurysms. On account of its excellent spatial delineation of aneurysms and possibilities for exact measurements, CT-angiography represents a valuable, supplementary method--in some cases also an alternative method--to digital subtraction angiography.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 2","pages":"63-70"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20513637","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Long-term follow up of intravenous mercury therapy]. 静脉汞治疗的长期随访。

Aktuelle Radiologie Pub Date : 1998-03-01

U Stier

引用次数: 0

[PTA of the brachiocephalic arteries]. [头臂动脉的PTA]。

Aktuelle Radiologie Pub Date : 1998-03-01

J Link, J Brossmann, S Müller-Hülsbeck, M Heller

{"title":"[PTA of the brachiocephalic arteries].","authors":"J Link, J Brossmann, S Müller-Hülsbeck, M Heller","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: Assessment of the technical success and mid-term success of PTA of brachiocephalic occlusive disease.Material and methods: 24 patients, who were treated interventionally because of stenoses of the brachiocephalic arteries were enrolled into this prospective study. In total there were 27 lesions (26 arteriosclerotic lesions and one dissection with pseudoaneurysma). 18 lesions were located in the subclavian artery (extending into the axillar artery in one case), 4 in the brachiocephalic trunk, three in the common carotid artery and two in the vertebral artery. As adjunctive to balloon dilatation 8 stents were implanted.Results: Technical success was achieved in 24/27 lesions. There was an embolic complication in one of 27 interventions. 15/24 patients with 17 treated lesions underwent control angiography with a mean follow-up of 14 months. Follow-up angiography revealed one occlusion and three significant restenoses. 5/24 patients agreed only to clinical follow-up and Doppler examinations, three were lost and one patient died.Conclusion: PTA of brachiocephalic occlusive disease showed good technical success. Additional implantation of stents may be useful. Midterm success is satisfactory.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 2","pages":"76-80"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20513639","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Neuro-interventional treatment of cerebrovascular malformations]. 【神经介入治疗脑血管畸形】。

Aktuelle Radiologie Pub Date : 1998-03-01

J Reul

引用次数: 0

[Does angiographic localization of bleeding affect the management and mortality in gastrointestinal hemorrhage of unknown origin?]. 出血的血管造影定位是否影响不明原因消化道出血的处理和死亡率?

Aktuelle Radiologie Pub Date : 1998-03-01

J Heider, G Layer, H J Textor, H H Schild

{"title":"[Does angiographic localization of bleeding affect the management and mortality in gastrointestinal hemorrhage of unknown origin?].","authors":"J Heider, G Layer, H J Textor, H H Schild","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: To evaluate the effect of angiography on patient management and mortality in patients with GIB of unknown origin.Material and methods: 88 angiographies were performed in 74 patients with GIB of unknown origin (18 upper gastrointestinal tract [GIT]), 35 lower GIT. 21 unknown localisation) and were evaluated retrospectively in regard to the influence on patient management and clinical outcome.Results: After unsuccessful endoscopic diagnosis, angiography shows a sensitivity of 60% in the acute phase of GIB. Once the GIB had stopped the sensitivity was 14%. Following angiographic localisation, patients were more commonly treated surgically (71% vs. 44.5%) and subsequently had a lower rate of persistent or recurring bleeding (15% vs. 37.5%) as well as a lower event related mortality (10.5% vs. 25%). Patients with angiographic localisation of the bleeding site had a better outcome than patients with unsuccessful bleeding localisation, with regard to both surgical (85% vs. 62.5%) and conservative (100% vs. 85%) treatment.Conclusion: Angiographic localisation should be attempted in all cases of unknown GI-bleeding after endoscopic methods have been unsuccessful or ambiguous, because such a procedure has a positive effect on patient management and outcome. Moreover, angiography also offers therapeutic options.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 2","pages":"71-5"},"PeriodicalIF":0.0,"publicationDate":"1998-03-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20513638","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":0,"RegionCategory":"","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

[Pulmonary complications of induction therapy in acute myeloid leukemia in adults. Findings in chest x-rays and computer tomography]. 成人急性髓性白血病诱导治疗的肺部并发症。胸部x光和计算机断层扫描的发现]。

Aktuelle Radiologie Pub Date : 1998-03-01

J Kirchner, A Boehme, C Hüttmann, V Jacobi

引用次数: 0