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[Radiologic appearance of primary anomalies of the lymphatic vessel system of the lung. Review and personal results]. 肺淋巴管系统原发性异常的影像学表现。回顾和个人结果]。
Aktuelle Radiologie Pub Date : 1997-09-01
J Kirchner, V Jacobi, A Stein, J Berkefeld, A Thalhammer, J Kollath
{"title":"[Radiologic appearance of primary anomalies of the lymphatic vessel system of the lung. Review and personal results].","authors":"J Kirchner,&nbsp;V Jacobi,&nbsp;A Stein,&nbsp;J Berkefeld,&nbsp;A Thalhammer,&nbsp;J Kollath","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Congenital disorders of the lymphatics of the lung are rare. On the basis of a literature review and our own experiences the disorders are divided into four groups and their radiographic findings are described. Pulmonary lymphangiectasia shows not typical signs. As an expression of the underlying pathophysiologic processes CT shows thickening of interlobular septs, interstitial edema and pleural effusions. Neither architectural distraction nor thickening of intralobular septs was seen. Lymphangioleiomyomatosis shows rather typical findings with multiple thin-walled bullae. In contrast to the opinion that architectural distraction is not seen in LAM we sometimes found signs of fibrosis. Disseminated pulmonary lymphangioma is characterised by proliferation of lymph vessels. CT-findings of this disorder have not been described before. CT shows multiple disseminated nodules of up to 2.5 cm accompanied by multiple bullae of similar distribution and size.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 5","pages":"243-8"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20340789","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
[Preoperative hook wire marking of nonpalpable suspected breast lesions]. 【术前钩丝标记不可触及的疑似乳腺病变】。
Aktuelle Radiologie Pub Date : 1997-09-01
G Sötje, R Waschkies, H Burba, F Freitag, Y Baron
{"title":"[Preoperative hook wire marking of nonpalpable suspected breast lesions].","authors":"G Sötje,&nbsp;R Waschkies,&nbsp;H Burba,&nbsp;F Freitag,&nbsp;Y Baron","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>45 clinical occult breast lesions in 43 patients were preoperatively localised using a mammographic unit, a hole compression plate, and a hookwire canula. 20 carcinomas were found. The positive predictive value of the mammography was 44%, a good result. Serious complications were absend and only one lesion was missed. The preoperative method is effective, rapid, and safe for detecting and localising occult breast lesions. The number operative explorations may be reduced by close contact to the radiologic colleagues and more primary stereotactic biopsies.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 5","pages":"253-5"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20340791","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
[Hepatic pseudolesion caused by puncture]. [穿刺引起的肝脏假性溃疡]。
Aktuelle Radiologie Pub Date : 1997-09-01
H Strunk, J Textor, L Leifeld
{"title":"[Hepatic pseudolesion caused by puncture].","authors":"H Strunk,&nbsp;J Textor,&nbsp;L Leifeld","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>We report the diagnosis and differential diagnosis of a hepatic pseudolesion due to percutaneous liver biopsy in a 30-year-old female patient with known chronic hepatitis C and renal insufficiency. In the course of transplant preparation, an abdominal spiral-CT examination pre and post i.v.-contrast injection as well as an angiography with CT-hepaticography and CT-portography were performed. In these examinations a 1 cm, hepatocellular-carcinoma mimicking liver lesion was found; it was hypodense in the CT-portography and showed a marked enhancement in the CT-hepaticography. This \"pseudolesion\", which was supposed to be due to the liver biopsy, resolved spontaneously.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 5","pages":"249-52"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20340790","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
[Percutaneous radiotherapy of bone metastases]. [骨转移的经皮放疗]。
Aktuelle Radiologie Pub Date : 1997-09-01
H Schüller, L Wisser, D Pauleit
{"title":"[Percutaneous radiotherapy of bone metastases].","authors":"H Schüller,&nbsp;L Wisser,&nbsp;D Pauleit","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Bone metastases causing pain syndromes and imminent pathologic fractures are among the main reasons for radiotherapy in patients suffering from malignant tumors. The indication is much influenced by the radiologic findings. Surgical methods are to be chosen in the first place in cases of pathologic fractures or patients with a high risk of such fractures. Different authors recommend various therapeutic regimens. Effective pain control can be achieved with one single dose of radiation. Doses of 6 to 40 Gy applied in one to 19 days are also efficient. Side effects, especially nausea and vomiting occur in 25% of cases; this number rises to 50% in cases of half body irradiation. Visible changes of bone mineral density may be noticed about 6 weeks after termination of radiotherapy. About 70% of osteolytic metastases show progressive sclerosis whereas osteosclerotic lesions may show both increase or decline of bone mass. In spite many years of experience the optimal strategy for radiation therapy of bone metastasis has not been defined; further studies are needed.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 5","pages":"274-8"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20340795","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
[Unexpected computerized tomography findings in neoplasm staging of a patient with plasmacytoma]. [1例浆细胞瘤患者肿瘤分期的意外计算机断层扫描结果]。
Aktuelle Radiologie Pub Date : 1997-09-01
C B Schäfer, M Allgäuer
{"title":"[Unexpected computerized tomography findings in neoplasm staging of a patient with plasmacytoma].","authors":"C B Schäfer,&nbsp;M Allgäuer","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A case of a 69-year-old male patient is described. Staging CT brought unexpected findings with therapeutic consequences. Pneumoperitoneum was the most important sign. A pneumoretroperitoneum and a dilatation of the colon sigmoldeum were also found. Intraoperatively a perforated sigmadiverticulitis was detected. Therefore, one should pay attention to extraskeletal changes during the staging of multiple myeloma.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 5","pages":"279-80"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20340796","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
[Diagnostic angiography in life-threatening colonic hemorrhage in Crohn disease]. [血管造影诊断克罗恩病危及生命的结肠出血]。
Aktuelle Radiologie Pub Date : 1997-09-01
T Muhr, F X Lenglinger, S Allinger, R Balon, W Fröhler, S Meindl, A Spöttl
{"title":"[Diagnostic angiography in life-threatening colonic hemorrhage in Crohn disease].","authors":"T Muhr,&nbsp;F X Lenglinger,&nbsp;S Allinger,&nbsp;R Balon,&nbsp;W Fröhler,&nbsp;S Meindl,&nbsp;A Spöttl","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Life-threatening colonic hemorrhage is a very rare condition in Crohn's disease. Lower gastrointestinal hemorrhage in Crohn's disease occurs in 0.6-2.5% of cases. In a patient presenting with severe gastrointestinal bleeding after ileocolectomy, mesenteric angiography provided precise localisation of the bleeding site in the area of the splenic flexure.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 5","pages":"281-3"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20340797","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
[Comparison of film-screen combinations with contrast detail diagram and interactive image analysis. 2: Linear assessment of grey scale ranges with interactive image analysis]. [对比细节图与交互图像分析的电影-屏幕组合对比。]2 .基于交互式图像分析的灰度范围线性评估[j]。
Aktuelle Radiologie Pub Date : 1997-09-01
G Stamm, G Eichbaum, G Hagemann
{"title":"[Comparison of film-screen combinations with contrast detail diagram and interactive image analysis. 2: Linear assessment of grey scale ranges with interactive image analysis].","authors":"G Stamm,&nbsp;G Eichbaum,&nbsp;G Hagemann","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>The following three screen-film combinations were compared: a) a combination of anticrossover film and UV-light emitting screens, b) a combination of blue-light emitting screens and film, and c) a conventional green fluorescing screen-film combination. Radiographs of a specially designed plexiglass phantom (0.2 x 0.2 x 0.12 m3) with bar patterns of lead and plaster and of air, respectively were obtained using the following parameters: 12 pulse generator, 0.6 mm focus size, 4.7 mm aluminum pre-filter, a grid with 40 lines/cm (12:1) and a focus-detector distance of 1.15 m. Image analysis was performed using an IBAS system and a Zeiss Kontron computer. Display conditions were the following: display distance 0.12 m, a vario film objective 35/70 (Zeiss), a video camera tube with a PbO photocathode, 625 lines (Siemens Heimann), an IBAS image matrix of 512 x 512 pixels with a resolution of 7 lines/mm, the projected matrix area was 5000 microns2. Grey scale ranges were measured on a line perpendicular to the grouped bar patterns. The difference between the maximum and minimum density value served as signal. The spatial resolution of the detector system was measured when the signal value was three times higher than the standard deviation of the means of multiple density measurements. The results showed considerable advantages of the two new screen-film combinations as compared to the conventional screen-film combination. The result was contradictory to the findings with pure visual assessment of thresholds (part I) that had found no differences. The authors concluded that (automatic) interactive image analysis algorithms serve as an objective measure and are specifically advantageous when small differences in image quality are to be evaluated.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 5","pages":"284-7"},"PeriodicalIF":0.0,"publicationDate":"1997-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20337734","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
[Are nonionic contrast media identical in their tolerability? Results of a double-blind randomized multicenter study with iomeprol and iopromide]. 非离子造影剂的耐受性是否相同?iomeprol和ioproide的双盲随机多中心研究结果。
Aktuelle Radiologie Pub Date : 1997-07-01
E Schmiedel
{"title":"[Are nonionic contrast media identical in their tolerability? Results of a double-blind randomized multicenter study with iomeprol and iopromide].","authors":"E Schmiedel","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Since a larger number of nonionic contrast media is available for the radiologist, the question arises as to whether they differ in their clinical tolerability. A double-blind, randomized, two-group comparison of phase IV with lomeprol and lopromide was carried out at 6 hospitals involving a total of 1,200 patients with the indication for computed tomography. The contrast media doses and the flow in computed tomography of the skull, thorax, and abdomen were, depending on the centre, between 50 and 200 ml and 0.5 and 3.0 ml/s, respectively. The biostatistical evaluation of adverse events which were probably contrast medium-related produced a highly significant difference between the two contrast media in favor of lomeprol (p = 0.0005). The difference in the reactions of heat, nausea, and vomiting is of clinical relevance as such adverse events may negatively affect the examination procedure and the opacification in spiral computed tomography.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 4","pages":"183-8"},"PeriodicalIF":0.0,"publicationDate":"1997-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20272876","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
[Contrast media-associated nephropathy--pathogenesis and prevention]. 造影剂相关性肾病——发病机制和预防。
Aktuelle Radiologie Pub Date : 1997-07-01
C M Erley, S H Duda
{"title":"[Contrast media-associated nephropathy--pathogenesis and prevention].","authors":"C M Erley,&nbsp;S H Duda","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>Contrast media-associated nephrotoxicity continues to be a relevant cause of acute renal failure, especially in patients with pre-existing renal insufficiency. Alterations in renal hemodynamics and direct tubular toxicity by contrast media are the primary factors believed to be responsible for contrast media-associated nephrotoxicity. We review recent insights into the pathogenesis of this complication and summarize prophylactic strategies focussing on hydration, vasoactive pharmacological agents, and prophylactic hemodialysis'.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 4","pages":"189-92"},"PeriodicalIF":0.0,"publicationDate":"1997-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20272877","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
[Image reconstruction of computerized tomography pictures using functional algebra]. [用函数代数方法重建计算机断层图像]。
Aktuelle Radiologie Pub Date : 1997-07-01
M Bradaczek, H Bradaczek
{"title":"[Image reconstruction of computerized tomography pictures using functional algebra].","authors":"M Bradaczek,&nbsp;H Bradaczek","doi":"","DOIUrl":"","url":null,"abstract":"<p><p>A detailed presentation of the process for calculating computed tomograms from the measured data by means of functional algebra is given and an attempt is made to demonstrate the relationships to those inexperienced in mathematics. Suggestions are also made to the manufacturers for improving tomography software although the authors cannot exclude the possibility that some of the recommendations may have already been realized. An interpolation in Fourier space to right-angled coordinates was not employed so that additional computer time and errors resulting from the interpolation are avoided. The savings in calculation time can only be estimated but should amount to about 25%. The error-correction calculation is merely a suggestion since it depends considerably on the apparatus used. Functional algebra is introduced here because it is not so well known but does provide appreciable simplifications in comparison to an explicit presentation. Didactic reasons as well as the possibility for reducing calculation time provided the foundation for this work.</p>","PeriodicalId":76986,"journal":{"name":"Aktuelle Radiologie","volume":"7 4","pages":"222-7"},"PeriodicalIF":0.0,"publicationDate":"1997-07-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"20272885","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
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