introduction: nowadays,  considerable developments  in  the field  of  radiotherapy have  been  achieved.  they  include  the  advances  made  in  the  equipments  and  treatment  planning  techniques  which  require  highly complex calculations. such achievements have made it possible to treat cancer patients not only  with  higher  radiation  dose  but  also  with  higher  precision  and  con...

A new therapy planning strategy We are investigating a new therapy planning strategy: interactive dose shaping (IDS). This planning paradigm aims to perform interactive local dose adaptations of a plan without compromising already established valuable dose features in real time. The key operation that facilitates dose shaping in real time by a direct interaction with a 3D dose distribution thro...

An apparatus was constructed to facilitate superimposition of the beam focus radiogram upon the axial transverse tomogram, in order to guide subsequent radia tion therapy more accurately. The apparatus automatically draws six isodose curves in three colors, by plotting the relative doses of the beam focus radiogram. In addition, the isodose chart was made at the same magnification as that of th...

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 ...

PURPOSE This study describes how to identify the coincidence of desired planning isodose curves with film experimental results by using a mathematical fractal dimension characteristic method to avoid the errors caused by visual inspection in the intensity modulation radiation therapy (IMRT). METHODS AND MATERIALS The isodose curves of the films delivered by linear accelerator according to Pla...

BACKGROUND Wedge filters are commonly used in radiation oncology for eliminating hot spots and creating a uniform dose distribution in optimizing isodose curves in the target volume for clinical aspects. These are some limited standard physical wedges (15°, 30°, 45°, 60°),or creating an arbitrary wedge angle, like motorized wedge or dynamic wedge,... The new formulation is presented by the comb...

Introduction: Nowadays,  considerable developments  in  the field  of  radiotherapy have  been  achieved.  They  include  the  advances  made  in  the  equipments  and  treatment  planning  techniques  which  require  highly complex calculations. Such achievements have made it possible to treat cancer patients not only  with  higher  radiation  dose  but  also  with  higher  precision  and  con...

Introduction: Wedge filters are commonly used in radiation oncology for eliminating hot spots and creating a uniform dose distribution in optimizing isodose curves in the target volume for clinical aspects. These are some limited standard physical wedges (15°, 30°, 45°, 60°), or creating an arbitrary wedge angle, like motorized wedge or dynamic wedge, ... The new formulation is...

AIM Compare the planning target volume (PTV) coverage in three different shielding techniques in cranial irradiation. SETTINGS AND DESIGN Tertiary care center, prospective study. MATERIALS AND METHODS The whole brain and meninges were contoured in ten planning CT scans, and expanded by 5 mm for the PTV. Shielding was designed using the French Society of Pediatric Oncology (SFOP) guidelines ...