This study aims to determine the distribution of radiation doses on PTV and OAR radioteraphy planning in RSUP. Prof. Dr. I.G.N.G Ngoerah, Bali, Indonesia does no exceed a predetermined limit. The research metode used is value Homogenity Index (H), Conformity (CI), maximum ose Organ At Risk (OAR), amely right eye lens, left brainstem, optic chiasma, spinal cord. These data are compared with prov...

The fluence to effective-dose and organ-absorbed-dose conversion coefficients for charged pions and muons were calculated based on the instructions given in ICRP Publication 103. For the calculation, the particle motions in the ICRP/ICRU adult reference computational phantoms were simulated using the PHITS code for four idealized irradiation geometries as well as those closely representing the ...

Craniospinal is known as the method to kill cancer within a wide radiation area, starting from cranial spinal nervous system. In case, has spread through fluid of cerebro spinalis, such medulloblastoma. We carried out research determine isodose curve in medulloblastoma craniospinal patients and DVH (Dose Volume Histogram) statistic OAR (Organ at Risk) by using 3D-CRT radiotherapy technique. To ...

Radially restricted linear energy transfer (LET) is a basic physical parameter relevant to radiation biology and radiation protection. In this report a convenient method is presented for the analytical computation of this quantity without the need for complicated simulation. The method uses the energy-restricted LET L delta, as recently redefined in a 1993 ICRU draft document and supplements it...

UNLABELLED BACKGROUND The purpose of this work was to reveal the research interest value of positron emission tomography (PET) imaging in visualizing the induced tissue activity post high-energy photon radiation treatment. More specifically, the focus was on the possibility of retrieving data such as tissue composition and physical half-lives from dynamic PET acquisitions, as positron-emitti...

PURPOSE The aim of this study is to evaluate the decrease of biological equivalent dose and its correlation with local/loco-regional control of tumour in the treatment of cervical cancer when the strength of the Ir-192 high dose rate (HDR) brachytherapy (BT) source is reduced to single, double and triple half life in relation to original strength of 10 Ci (∼ 4.081 cGy x m(2) x h(-1)). MATERIA...