Tomasz Piotrowski

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The aim of this study was to evaluate the clinical and pathological features of breast cancer patients with bilateral breast cancer and to assess the impact of the second breast cancer on their prognosis. Thirty six breast cancer patients with bilateral (metasynchronous) cancer were treated in Greatpoland Cancer Center from 1983 to 1995. It constituted 4.1%(More)
INTRODUCTION To evaluate the impact interfraction prostate (CTV1) motion corrections on doses delivered to seminal vesicles (CTV2) and lymph nodes (CTV3), and to determine ideal planning target volume (PTV) margins for these targets with prostate-based position verification. MATERIAL AND METHODS Retrospective analysis based on 253 cone beam computed(More)
BACKGROUND AND AIM This study proposed a method to estimate the beam-on time for prostate cancer patients treated on Tomotherapy when FW (field width), PF (pitch factor), modulation factor (MF) and treatment length (TL) were given. MATERIAL AND METHODS THE STUDY WAS DIVIDED INTO TWO PARTS: building and verifying the model. To build a model, 160 treatment(More)
AIM/BACKGROUND The analysis of systematic and random errors obtained from the pooled data on inter-fraction prostate motion during radiation therapy in two institutions. MATERIALS AND METHODS Data of 6085 observations for 216 prostate cancer patients treated on tomotherapy units in two institutions of position correction shifts obtained by co-registration(More)
PURPOSE The aim of this work was to analyze the results of palliative HDR brachytherapy in patients with advanced esophageal cancer. METHODS AND MATERIALS Ninety-one patients with unresectable, advanced esophageal cancer were treated palliatively by HDR brachytherapy. All patients received a total dose of 22.5 Gy in three fractions per week. Remissions of(More)
The purpose of the study was to determine the relation between the incidence of radiation pneumonitis (RP) and available parameters from a dose-volume histogram (DVH) in patients with non-small cell lung cancer (NSCLC) who underwent three-dimensional conformal radiotherapy treatment. Between January 1999 and August 2003 in the Greatpoland Cancer Center, 62(More)
PURPOSE Certain constraints for target coverage and dose limits in Organs at Risk (OARs) shows some evidence that doses values and homogeneity index in treated volume depends on prognostic factors such as prostate volume, location of urethra and the number of inserted applicators. Our study is to determine the relation between values of the doses in(More)
Pulsed Dose Rate (PDR) treatment is a new brachytherapy modality that combines physical advantages of high-dose-rate (HDR) brachytherapy (isodose optimization, radiation safety) with the radiobiological advantages of low-dose-rate (LDR) brachytherapy. Pulsed brachytherapy consists of using a stronger radiation source than for LDR brachytherapy and is given(More)
The purpose of this study was to determine the benefit of high dose rate endotracheal brachytherapy as an exclusive palliative treatment of obstructive tracheal cancer. Thirty-five patients with advanced tracheal carcinoma were treated between May 1999 and March 2001 in Greatpoland Cancer Center. They were qualified for brachytherapy due to life-threatening(More)