Aktuelle Radiologie最新文献_第3页

[Pseudo-rupture of the femoral artery following balloon angioplasty]. 球囊血管成形术后假性股动脉破裂。

Aktuelle Radiologie Pub Date : 1998-07-01

D Kutzner, J Brossmann, U Kopp

引用次数: 0

[MRI in typical and atypical aortic dissection]. [典型和非典型主动脉夹层的MRI]。

Aktuelle Radiologie Pub Date : 1998-07-01

W Kersjes, N Fouda, T Sommer, S Mohr-Kahaly, K Schunk, F Schweden, H Schild

{"title":"[MRI in typical and atypical aortic dissection].","authors":"W Kersjes, N Fouda, T Sommer, S Mohr-Kahaly, K Schunk, F Schweden, H Schild","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: To determine the value of MRI in typical and atypical aortic dissections.Methods: MRI investigations on 16 patients with aortic dissections were analysed retrospectively; for 8 patients CT investigations carried out at almost the same time were available for comparison.Results: In all cases the diagnosis of aortic dissection was possible from MRI and CT. If a dissection membrane and a double lumen were present these were detected in all patients by both methods. In three patients with atypical dissections, only an asymmetrical abnormal wall thickening as sole sign for the presence of an aortic dissection was seen. A differentiation between true and false lumen was possible in 16 of 17 MRI investigations and in 5 of 8 CT investigations on the basis of differing blood flow velocities or, respectively, the detection of a thrombus in the false lumen. The relationship of the dissection membrane to the large aortic branches as well as the determination of the branch vessel origin with regard to true or false lumen could be evaluated better with MRI than with CT.Conclusions: Thus MRI has a significant role in the diagnosis and follow-up of aortic dissections. The advantage in comparison to the alternative spiral CT technique is, in addition to the absence of radiation exposure, the better analysis of the extent of the dissection as a result of the multi-planar slice orientation (especially in the region of the aortic arch and the arch vessel origins) without the necessity to administer iodine-containing contrast media.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 4","pages":"183-90"},"PeriodicalIF":0.0,"publicationDate":"1998-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20673817","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

[Radiation-induced osteonecrosis of the pelvic bones vs. bone metastases--a difficult differential diagnosis]. [放射引起的盆腔骨骨坏死与骨转移——一个困难的鉴别诊断]。

Aktuelle Radiologie Pub Date : 1998-07-01

U Höller, A Petersein, W Golder, S Hoecht, T Wiegel

{"title":"[Radiation-induced osteonecrosis of the pelvic bones vs. bone metastases--a difficult differential diagnosis].","authors":"U Höller, A Petersein, W Golder, S Hoecht, T Wiegel","doi":"","DOIUrl":"","url":null,"abstract":"Background: Since the introduction of megavoltage radiation therapy radiation osteitis has become a rare event and may be easily mistaken for bone metastases. A case of radiation osteitis is reported and diagnostic features are discussed.Case report: A 70 year-old female patient underwent rectum resection for rectum cancer and was given standard adjuvant therapy consisting of irradiation of the tumor site and lymph nodes in the pelvis with 18 MeV photons, boxfield technique up to 50.4 Gy and chemotherapy with 5-FU. Eight months later she complained of severe lower back pain. Plain radiographs and CT revealed osteolytic lesions in the ileosacral joints and os sacrum which appeared as circumscript areas of signal loss in MRI (T1-weighted sequence). A soft tissue mass was not detected. CT-guided biopsy excluded bone metastases.Conclusion: Characteristic features of radiation osteitis are spongiosa destructions initially in weight-bearing bones within the radiation field, namely the ileosacral joints, and the lack of pathologic soft tissue mass. False treatment, i.e. radiation for bone metastases, should be avoidable.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 4","pages":"196-7"},"PeriodicalIF":0.0,"publicationDate":"1998-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20673819","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

[Barium aspiration with fatal outcome]. [吸钡致死]。

Aktuelle Radiologie Pub Date : 1998-07-01

M Tsokos, F Schulz, H Vogel

引用次数: 0

[Multi-project angiography in the imaging of cerebral aneurysm]. 多项目血管造影在脑动脉瘤成像中的应用

Aktuelle Radiologie Pub Date : 1998-07-01

M Hering, A K Wakhloo, C Zwicker, M Schumacher

引用次数: 0

[Clinical aspects of image quality and doses in gated pulsed imaging]. [门控脉冲成像中图像质量和剂量的临床方面]。

Aktuelle Radiologie Pub Date : 1998-07-01

S Vetter, H Heckmann, E P Strecker, H P Busch, K F Kamm, H Allmendinger

{"title":"[Clinical aspects of image quality and doses in gated pulsed imaging].","authors":"S Vetter, H Heckmann, E P Strecker, H P Busch, K F Kamm, H Allmendinger","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: The relations between image quality in last image hold images and dose in grid controlled fluoroscopy in comparison to the continuous mode need to be characterised and recommendations for the clinical application of this technique should be given.Material and methods: Spatial resolution, signal-noise ratio and, contrast-detail visibility were evaluated by phantom measurements in grid controlled pulsed and continuous fluoroscopy. Dose was measured at the image intensifier entrance. Image quality of last image hold (LIH) images of clinical examinations was graded in relation to single shot exposures.Results: Signal-noise ratio and contrast-detail visibility depend on the dose per puls. Spatial resolution and contrast-detail visibility in grid controlled fluoroscopy are superior than to in the continuous mode. Image quality of the LIH images from the grid controlled fluoroscopy was improved. Radiation exposure could be reduced to 10-46%.Conclusions: Combinations of puls-dose and -frequency are recommended for achieving extensive dose reduction and improved image quality of LIH images.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 4","pages":"191-5"},"PeriodicalIF":0.0,"publicationDate":"1998-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20673818","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

[Pleural drainage in acute thoracic trauma. Comparison of the radiologic image and computer tomography]. 胸膜引流在急性胸外伤中的应用。影像学与计算机断层扫描的比较[j]。

Aktuelle Radiologie Pub Date : 1998-07-01

P Heim, R Maas, C Tesch, E Bücheler

引用次数: 0

[3-phase spiral CT of the liver, Value of non-contrast arterial and portal venous studies in the diagnosis of focal liver lesions]. [肝脏3期螺旋CT，非对比动脉和门静脉造影在肝局灶性病变诊断中的价值]。

Aktuelle Radiologie Pub Date : 1998-07-01

R Hünerbein, P Reuter, B Skutta, F P Kuhn

{"title":"[3-phase spiral CT of the liver, Value of non-contrast arterial and portal venous studies in the diagnosis of focal liver lesions].","authors":"R Hünerbein, P Reuter, B Skutta, F P Kuhn","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: To assess the value of noncontrast, arterial and portal venous phase of triphasic helical CT in detecting and characterising focal liver lesions.Material and methods: 120 patients with focal liver disease underwent triphasic helical CT examinations with a collimation of 6.5 mm at a table feed of 6.5 mm/s. The liver scans were obtained before the administration of 120 ml of non-ionic contrast material (flow 2 or 3 ml/s), at the arterial phase, and at the portal venous phase (20 s, respectively 60 s after injection). Patients were divided into four groups according to the underlying disease and enhancement pattern. The studies were evaluated retrospectively.Results: A total of 269 lesions was seen. The noncontrast phase (NCP) revealed 86% of lesions, the arterial phase (AP) 95% and the portal venous phase (PVP) 91%. In the first group of hypovascular lesions (colorectal carcinoma) all lesions (73/73) were detected in the PVP. In the second group of hypervascular lesions (breast cancer, melanoma) the combination of AP and PVP revealed 73 of 74 lesions. In the third group of patients with unknown primary and detected lesions by sonography all 89 lesions were detected with the combination of AP and PVP. In the fourth group of patients with cirrhosis 3 of 33 lesions were detected exclusively during the AP and 3 other lesions exclusively during the NCP. To make a definitive diagnosis of focal liver lesions the value of the three phases was as follows: to characterise lesions the PVP was sufficient in 62%, the combination of PVP and AP in 27%, and the combination of all three phases in 11%.Conclusions: If hypovascular lesions are suspected examination during PVP is sufficient. In cases of hypervascular lesions and lesions of unknown primary AP and PVP should be combined. Unenhanced scans are of additional diagnostic value only in patients with liver cirrhosis.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 4","pages":"176-82"},"PeriodicalIF":0.0,"publicationDate":"1998-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20673816","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

[Heavy metal incorporation as an unusual self-injury]. [重金属结合作为一种不寻常的自残]。

Aktuelle Radiologie Pub Date : 1998-05-01

G Kernbach-Wighton, H Kijewski, R Sprung, D Degner, A Riegel, K S Saternus

{"title":"[Heavy metal incorporation as an unusual self-injury].","authors":"G Kernbach-Wighton, H Kijewski, R Sprung, D Degner, A Riegel, K S Saternus","doi":"","DOIUrl":"","url":null,"abstract":"A 19-year-old man was admitted to hospital because of uncharacteristic neurologic symptoms. During the first examination morphologic alterations due to an injection of mercury into the left arm and the left side of the trunk were found. The dose and the manner of application were doubtful and suspected to be a case of self-infliction. The man informed the police only 7 months later because his relatives had finally persuaded him to do so. The description of the infliction by unknown perpetrators was full of contradictions. Initially the patient gave only an indistinct description. But later on, the number of details increased. At the same time there was a change in the characteristics of the perpetrator(s). Other differences existed concerning a loss of consciousness which should have been caused by a single stroke on an arm. Furthermore, the patient told about a swelling as big as an egg, provoked by an injection of liquid mercury. It could be shown by experiments that mercury can be injected into soft-tissue very simply and that it spreaded widely. Arguments for a self-injection were e.g. the technical possibility, the topography of the injection marks, and an easy handling of the syringe. A psychiatric examination furthermore revealed, that the patient had had periods of restriction of thinking, sometimes combined with a lack of appreciation.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 3","pages":"131-4"},"PeriodicalIF":0.0,"publicationDate":"1998-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20563489","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

[Imaging tumor extension of renal cell carcinomas with magnetic resonance tomography. Improved tumor-tissue contrast with Gd-DTPA-assisted spin-echo sequences and simultaneous fat suppression]. 磁共振成像肾细胞癌的肿瘤扩展。gd - dtpa辅助的自旋回波序列改善肿瘤组织对比，同时抑制脂肪。

Aktuelle Radiologie Pub Date : 1998-05-01

S Venz, J Hierholzer, U Keske, R Friedrichs, R Schröder, C Siewert, N Hosten, R Felix

{"title":"[Imaging tumor extension of renal cell carcinomas with magnetic resonance tomography. Improved tumor-tissue contrast with Gd-DTPA-assisted spin-echo sequences and simultaneous fat suppression].","authors":"S Venz, J Hierholzer, U Keske, R Friedrichs, R Schröder, C Siewert, N Hosten, R Felix","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: To evaluate the use of contrast-enhanced T1-weighted images with fat suppression (T1FS) to improve the contrast-to-noise ratio of renal cancer and renal parenchyma as well as perirenal fat.Methods: 25 patients with histologically proven unilateral renal cancer after nephrectomy were examined before surgery. In addition to plane and contrast-enhanced T1-weighted as well as T2-weighted spin-echo images, all patients had T1 FS immediately after administration of Gd-DTPA in two planes. The contrast-to-noise ratio was calculated using circular regions-of-interest which outlined the tumor, the renal parenchyma, pyelon, and the perirenal fat.Results: T1 FS significantly improved the contrast-to-noise ratio of renal cancer and renal parenchyma compared to all conventional spinecho sequences (p < 0.001; Wilcoxon-Test). Compared to contrast-enhanced T1-weighted images without fat-suppression T1 FS yielded a higher CNR of the tumor, the perirenal fat and the pyelon. Another advantage was the absence of the chemical-shift artifact which is mostly pronounced in T2-weighted images and a reduced number of observed artifacts due to breathing.Conclusion: T1 FS should replace conventional contrast-enhanced T1-weighted spin-echo images in the work-up of renal cancer using MRI.","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"8 3","pages":"119-24"},"PeriodicalIF":0.0,"publicationDate":"1998-05-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20563487","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