نتایج جستجو برای: brachytherapy

تعداد نتایج: 7959  

Journal: :The Lancet. Oncology 2006
Rafael Martinez-Monge Mauricio Cambeiro Mikel San-Julián Luis Sierrasesúmaga

Brachytherapy is a sophisticated radiation method in which radioisotopes are placed inside or at a short distance from the tumour. The volume of tissue that receives the prescribed dose of radiotherapy is therefore fairly small compared with that used in standard radiotherapy techniques. In paediatric oncology, this method of radiation delivery can have a favourable effect on several undesirabl...

2012
Mahdi Sadeghi Pooneh Saidi Claudio Tenreiro

The term of brachytherapy, also known as “internal radiotherapy, sealed source radiotherapy, curietherapy or endocurietherapy” is from Greek work brachy means short distance and therapy (treatment) and also known as internal radiotherapy or sealed source radiotherapy. Brachytherapy is a special form of radiotherapy where a radioactive source is carefully placed on or inside the area to be treat...

Journal: :iranian journal of medical physics 0
seyed mohsen hosseini daghigh radiation medicine department, shahid beheshti university, tehran, iran

introduction interaluminal brachytherapy is one of the important methods of esophageal cancer treatment. the effect of applicator attenuation is not considered in dose calculation method released by aapm-tg43. in this study, the effect of high-dose rate (hdr) brachytherapy esophageal applicator on dose distribution was surveyed in hdr brachytherapy. materials and methods a cylindrical pmma phan...

Journal: :Cancers 2023

This study aims to investigate the effect of dose escalation with brachytherapy (BT) as an addition definitive chemoradiotherapy (CRT) on local control and survival in esophageal cancer. From 2001 2020, 183 patients locally limited or advanced cancer received CRT without a two-center study. External-beam radiotherapy was delivered at 50.4 Gy 1.8 daily fractions, followed by sequential boost pri...

2009
Primoz Petric Robert Hudej Maja Music

PURPOSE To report on preliminary results of a prospective study on MRI-assisted cervix cancer brachytherapy pre-planning. MATERIAL AND METHODS In six locally advanced cervix cancer patients, five days before the first brachytherapy fraction, tandem & ring applicator was inserted under para-cervical anaesthesia, MRI performed and applicator removed. Procedure-time and patient-tolerability were...

2016
Joachim Chan Isabel Syndikus

The increased frequency of PSA testing has led to an increased diagnosis of early organ confined prostate cancer. Diagnosis is primarily made by histology, via TRUS-guided sextant biopsy or template biopsy which can provide improved localisation of cancer within the prostate. Staging is from digital rectal examination, from imaging with multi-parametric MRI (TNM staging), from PSA levels, and f...

Journal: :Medical physics 2006
Ali S Meigooni Shahid B Awan Kai Dou

Recently, elongated brachytherapy sources (active length >1 cm) have become commercially available for interstitial prostate implants. These sources were introduced to improve the quality of brachytherapy procedures by eliminating the migration and seed bunching associated with loose seed-type implants. However, the inability to calibrate elongated brachytherapy sources with the Wide-Angle Free...

Journal: :Journal of Experimental & Clinical Cancer Research : CR 2009
Gustavo A Viani Gustavo B Manta Eduardo J Stefano Ligia I de Fendi

BACKGROUND The literature supporting high-dose rate brachytherapy (HDR) in the treatment of cervical carcinoma derives primarily from retrospective series. However, controversy still persists regarding the efficacy and safety of HDR brachytherapy compared to low-dose rate (LDR) brachytherapy, in particular, due to inadequate tumor coverage for stage III patients. Whether LDR or HDR brachytherap...

Journal: :International journal of radiation oncology, biology, physics 2001
B Guix I Henríquez A Andrés F Finestres J I Tello A Martínez

PURPOSE To analyze the results obtained in a prospective group of patients with keloid scars treated by high-dose-rate (HDR) brachytherapy with or without surgery. METHODS AND MATERIALS One hundred and sixty-nine patients with keloid scars were treated with HDR brachytherapy between December 1991 and December 1998. One hundred and thirty-four patients were females, and 35 were males. The dist...

Journal: :RADIOISOTOPES 2012

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