Rontgenpraxis; Zeitschrift fur radiologische Technik最新文献_第10页

[Monstrous venous hemangioma of the retroperitoneum: problems of diagnosis]. 腹膜后畸形静脉血管瘤:诊断问题。

Rontgenpraxis; Zeitschrift fur radiologische Technik Pub Date : 2000-01-01

S Leinung, I Lotz, P Würl, A Frey, L Lochhaas, M Schönfelder

{"title":"[Monstrous venous hemangioma of the retroperitoneum: problems of diagnosis].","authors":"S Leinung, I Lotz, P Würl, A Frey, L Lochhaas, M Schönfelder","doi":"","DOIUrl":"","url":null,"abstract":"The venal haemangioma is defined as a benign tumor consisting of veinlike vessels. The preoperative diagnosis and its inherent problems are illustrated using a coincidentally diagnosed monstrous haemangioma tumor of the retroperitonial space in a twenty year old patient. With respect to our patient, X-ray, computer tomography and angiography all failed as diagnostic tools. Only the use of Doppler sonographic flow signals suggested the presence of a haemangioma. The morphology, prognosis and clinical significance of blood vessel tumors are multifaceted. The most important differential diagnoses to the venous haemangioma are the cavernous and the capilliary haemangioma. The venous haemangioma distinguishes itself through the presence of blood vessel walls. Haemangiomas are common benign tumors. In the presence of highly developed muscular components, there exists a transition to angiomyomas and to leiomyomas. Venal haemangiomas are extremely rare in the demonstrated localisation of the retroperitoneal space. Here they can grow to monstrous preportions whilst remaining undetected. Thus the patient is under the potential danger of bleeding to death through trivial injuries. The therapy of choice remains total surgical excision. In situations of unclear clinical results with respect to preoperative diagnosis especially amongst young adults, one should at least consider the possibility of a haemangioma as the root of the problem.","PeriodicalId":76505,"journal":{"name":"Rontgenpraxis; Zeitschrift fur radiologische Technik","volume":"52 9","pages":"302-8"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21774989","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

[Radiotherapy in Langerhans-cell histiocytosis. 2 case reports and review of the literature]. 放疗治疗朗格汉斯细胞组织细胞增多症。2例病例报告及文献综述]。

Rontgenpraxis; Zeitschrift fur radiologische Technik Pub Date : 2000-01-01

R Heyd, G Strassmann, F Donnerstag, T Martin, N Zamboglou

{"title":"[Radiotherapy in Langerhans-cell histiocytosis. 2 case reports and review of the literature].","authors":"R Heyd, G Strassmann, F Donnerstag, T Martin, N Zamboglou","doi":"","DOIUrl":"","url":null,"abstract":"The use of radiotherapy in the treatment of Langerhans' cell histiocytosis was first reported in the literature in 1930 and has been proven as effective in numerous studies. We present the results of two female adults with eosinophilic granuloma of bone who underwent conventionally fractionated radiation therapy with total doses of 7 x 1.8 Gy and 7 x 2.0 Gy in four different sites. After observation periods raging from three months to six years local control of the disease was achieved in all treated locations. A review of 18 previously published studies include a total of 310 sites of eosinophilic granuloma of bone in 216 patients. It was demonstrated in 13 studies that the patients had complete relief of symptoms. An average of 94.3% had local control of the symptoms. Furthermore, in 12 studies for a total of 344 cases with involvement of other organs local control was reported in an average of 64.8% (range: 14.3-100%). Based on our own observations and on the literature review we conclude that low dose radiation therapy plays an important role in the management of localised Langerhans' cell histiocytosis. In order to minimise the risk of radiation induced neoplasms an accurate and precise radiation technique is required.","PeriodicalId":76505,"journal":{"name":"Rontgenpraxis; Zeitschrift fur radiologische Technik","volume":"53 2","pages":"51-61"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21828583","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

Dosimetric analysis at ICRU reference points in HDR-brachytherapy of cervical carcinoma. 宫颈癌hdr近距离放射治疗ICRU参考点剂量学分析。

Rontgenpraxis; Zeitschrift fur radiologische Technik Pub Date : 2000-01-01

H T Eich, U Haverkamp, O Micke, F J Prott, R P Müller

{"title":"Dosimetric analysis at ICRU reference points in HDR-brachytherapy of cervical carcinoma.","authors":"H T Eich, U Haverkamp, O Micke, F J Prott, R P Müller","doi":"","DOIUrl":"","url":null,"abstract":"In vivo dosimetry in bladder and rectum as well as determining doses on suggested reference points following the ICRU report 38 contribute to quality assurance in HDR-brachytherapy of cervical carcinoma, especially to minimize side effects. In order to gain information regarding the radiation exposure at ICRU reference points in rectum, bladder, ureter and regional lymph nodes those were calculated (digitalisation) by means of orthogonal radiographs of 11 applications in patients with cervical carcinoma, who received primary radiotherapy. In addition, the doses at the ICRU rectum reference point was compared to the results of in vivo measurements in the rectum. The in vivo measurements were by factor 1.5 below the doses determined for the ICRU rectum reference point (4.05 +/- 0.68 Gy versus 6.11 +/- 1.63 Gy). Reasons for this were: calibration errors, non-orthogonal radiographs, movement of applicator and probe in the time span between X-ray and application, missing connection of probe and anterior rectal wall. The standard deviation of calculations at ICRU reference points was on average +/- 30%. Possible reasons for the relatively large standard deviation were difficulties in defining the points, identifying them on radiographs and the different locations of the applicators. Although 3 D CT, US or MR based treatment planning using dose volume histogram analysis is more and more established, this simple procedure of marking and digitising the ICRU reference points lengthened treatment planning only by 5 to 10 minutes. The advantages of in vivo dosimetry are easy practicability and the possibility to determine rectum doses during radiation. The advantages of computer-aided planning at ICRU reference points are that calculations are available before radiation and that they can still be taken into account for treatment planning. Both methods should be applied in HDR-brachytherapy of cervical carcinoma.","PeriodicalId":76505,"journal":{"name":"Rontgenpraxis; Zeitschrift fur radiologische Technik","volume":"53 2","pages":"62-6"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21828584","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

[Use of the ROC method in image quality problems in roentgen mammography. 2. Studies on image quality and radiation exposure in large-layer thickness]. ROC方法在x线摄影图像质量问题中的应用。2. 大层厚下图像质量与辐射暴露的研究[j]。

Rontgenpraxis; Zeitschrift fur radiologische Technik Pub Date : 2000-01-01

R Klein, M Säbel

引用次数: 0

[Results of radiotherapy in brain metastasis]. 放疗治疗脑转移的结果。

Rontgenpraxis; Zeitschrift fur radiologische Technik Pub Date : 2000-01-01

J Schultze, A Kaya, B Kimmig

{"title":"[Results of radiotherapy in brain metastasis].","authors":"J Schultze, A Kaya, B Kimmig","doi":"","DOIUrl":"","url":null,"abstract":"Purpose: To evaluate the effect of radiation therapy in the treatment of brain metastases.Patients and methods: Fifty-eight patients with brain metastases were irradiated. In 52 patients the post-therapeutic survival time could be evaluated. Most frequent basic tumor entity was lung cancer, followed by breast cancer. Eighteen patients underwent neurosurgery prior to radiation therapy, 23 patients underwent only radiotherapy and in 13 patients an additional chemotherapy was performed. Four patients were treated by all these means. Radiation therapy was done as a whole brain irradiation with a total dose of 40 Gy at single doses of two Gy or 30 Gy at single doses of 3 Gy respectively.Results: There were no radiogenic complications. 42 of 58 patients (72%) showed an improved neurological status. In ten patients radiation therapy had to be abandoned due to deterioration of the patients condition, five patients died in the hospital. Mean survival time for all the patients were 213 days, by subtracting the preterminally treated patients the time improved up to 269 days. The prognosis was dependant of several factors. Main importance had the basic tumor entity itself leading to a mean survival time in breast cancer patients of 347 days in contrary to those with lung cancer and 152 days mean survival time. Good general status, young age and solitary metastasis were positive predictive factors.Conclusions: Radiation therapy is capable to improve quality of life and to prolong survival after an only short treatment period. Treatment should be initiated quickly and consequently after diagnosis.","PeriodicalId":76505,"journal":{"name":"Rontgenpraxis; Zeitschrift fur radiologische Technik","volume":"53 3","pages":"102-9"},"PeriodicalIF":0.0,"publicationDate":"2000-01-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"21952992","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 procedures in the region of neck blood vessels: DSA, MRA, CT angiography]. [颈部血管区域成像程序:DSA、MRA、CT血管造影]。

Rontgenpraxis; Zeitschrift fur radiologische Technik Pub Date : 2000-01-01

R Tomczak, H Seifart, S Krämer, T Fleiter, A Gabelmann, J Görich

引用次数: 0

[Use of the ROC method in image quality problems in roentgen mammography. I. ROC analysis as image quality test procedure]. ROC方法在x线摄影图像质量问题中的应用。1 . ROC分析作为图像质量检验程序]。

Rontgenpraxis; Zeitschrift fur radiologische Technik Pub Date : 2000-01-01

R Klein, M Säbel

引用次数: 0

[Renal parenchymal defects as signs of renal tuberculosis]. 【肾实质缺损是肾结核的征象】。

Rontgenpraxis; Zeitschrift fur radiologische Technik Pub Date : 2000-01-01

T H Kirchner, J Kirchner, V Jacobi