Radiology Key

[9]. Within the last few years is has become more difficult to obtain iridium-192 wire in the UK. The future trend is to carry out implants using remote afterloading machines….

Anal cancer Implantation is rarely used as the sole treatment of anal cancer. Patients are initially treated with external beam radiotherapy to doses of 40–45   Gy over 4–5 weeks. Patients with…

Figure 11.1B) are inserted to the tumour-bearing structure at 12   mm intervals under fluoroscopic control. The most posterior gutter guide is inserted first and attempts are made to keep all subsequent…

Bile duct cancer Primary biliary cancer is a rare condition. For this reason, studies in the use of intraluminal brachytherapy have tended to be small, non-randomized trials. Iridium wire or,…

Oesophagus An endoscope is used to place a suitable catheter through the oesophageal tumour. A high dose iridium source or, less frequently, caesium pellets in the medium dose rate Selectron…

Bronchial cancers The possible major indication for intraluminal brachytherapy in carcinoma of bronchus is obstruction of a major airway. A fine catheter can be introduced through the tumour using a…

Gynaecological cancer Related posts: descriptors of the radionuclide imaging process Radiation treatment planning: immobilization, localization and verification techniques Principles and practice of radiation treatment planning trends Dentition

[1]. The proposed threshold BED for rectal complications is 90   Gy3 (i.e. calculated with an α/β of 3   Gy), and for 50% morbidity rate is 190   Gy3. The dose tolerance of the bladder…

Dosimetry Radioactive material is implanted into tissues according to distribution rules which vary according to the system used. In Europe, the classical Parker-Paterson and Quimby systems have largely been superseded…

Radionuclides in brachytherapy Related posts: descriptors of the radionuclide imaging process Radiation treatment planning: immobilization, localization and verification techniques Principles and practice of radiation treatment planning trends Dentition