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PURPOSE Prognostic factors in 1292 patients with brain metastases, treated in a single institution were identified in order to determine subgroups of patients suitable for selection in future trials. MATERIALS AND METHODS From January 1981 through December 1990, 1292 patients with CT-diagnosed brain metastases were referred to the Department of Radiation(More)
1H MR spectra obtained by chemical shift imaging (CSI) of contrast-enhancing brain tumors before and after the administration of Gd-contrast agent were quantitated and compared with the results in normal brain tissue included in the volume of interest. Twenty-seven combined magnetic resonance imaging and spectroscopy (MRI, MRS) examinations of brain tumor(More)
The feasibility, toxicity and tumor response of stereotactic body radiation therapy (SBRT) for treatment of primary and metastastic liver tumors was investigated. From October 2002 until June 2006, 25 patients not suitable for other local treatments were entered in the study. In total 45 lesions were treated, 34 metastases and 11 hepatocellular carcinoma(More)
PURPOSE Target delineation using only CT information introduces large geometric uncertainties in radiotherapy for lung cancer. Therefore, a reduction of the delineation variability is needed. The impact of including a matched CT scan with 2-[18F]fluoro-2-deoxy-D-glucose positron emission tomography (FDG-PET) and adaptation of the delineation protocol and(More)
PURPOSE We used four-dimensional multislice spiral computed tomography (MSCT) to determine respiratory lung-tumor motion and compared this strategy to common clinical practice in conformal radiotherapy treatment-planning imaging. METHODS AND MATERIALS The entire lung volume of 10 consecutive patients with 14 lung metastases were scanned by a 16-slice(More)
OBJECTIVE A case study at the department for heart surgery of an Austrian University Hospital in 2001, examined the outcome of improved communication aimed at empowering patients to be more effective co-producers of recuperation after surgery. METHODS Evaluated were the effects of a training program for developing communication skills of health(More)
BACKGROUND AND PURPOSE To evaluate the process of target volume delineation in lung cancer for optimization of imaging, delineation protocol and delineation software. PATIENTS AND METHODS Eleven radiation oncologists (observers) from five different institutions delineated the Gross Tumor Volume (GTV) including positive lymph nodes of 22 lung cancer(More)
PURPOSE The prostate volume delineated on MRI is smaller than on CT. The purpose of this study was to determine the influence of MRI- vs. CT-based prostate delineation using multiple observers on the dose to the target and organs at risk during external beam radiotherapy. MATERIALS AND METHODS CT and MRI scans of the pelvic region were made of 18 patients(More)
BACKGROUND A retrospective study of 1,493 head and neck cancer patients was designed to test current radiobiological thinking, postulating the detrimental effect of protracted overall treatment times (OTT) and/or split course (SC) regimes in radiation therapy on local tumor control. METHODS Primary squamous cell carcinomas of the oral cavity (OC),(More)
BACKGROUND Aggressive fibromatosis (AF) is a soft tissue tumor and is rare in childhood, with high potential for local invasiveness and recurrence. General recommendations for the clinical management of pediatric patients with AF remain undetermined. METHODS The authors retrospectively analyzed 13 children with AF who were diagnosed from 1987 until 2004(More)