Background/Aim. In the past two decades, we have witnessed emergence of new radiation therapy techniques, radiotherapy treatment planning system (TPS) with calculating algorithms for dosage calculation in a patient, units multislice computed tomography (CT) and image-guided delivery. The aim study was investigating significant difference dosimetric TPS relation to values obtained by measuring o...

Essential for the calculation of photon fluence distributions for intensity modulated radiotherapy (IMRT) is the use of a suitable objective function. The objective function should reflect the clinical aims of tumor control and low side effect probability. Individual radiobiological parameters for patient organs are not yet available with sufficient accuracy. Some of the major drawbacks of some...

Throughout the year 2000 our standard treatment planning software TRiP98 [1, 2] which went into production last year [3] was used in combination with the Voxelplan environment for the planning of all 32 patients [4]. Specific improvements on the software side were the introduction of inhomogeneous dose prescriptions, extensions of the beam model and addition of auxiliary functions. Inhomogeneou...

In this paper, we present the eIMRT project which is currently carried out by diverse institutions in Galicia (Spain) and the USA. The eIMRT project will offer radiotherapists a set of algorithms to optimize and validate radiotherapy treatments, both CRT- and IMRT-based, hiding the complexity of the computer infrastructure needed to solve the problem using GRID technologies. The new platform is...

Extranodal natural killer/T-cell lymphoma (ENKTL), nasal type, is a rare form of non-Hodgkin lymphoma. Treatment of ENKTL primarily relies on radiation; thus, proper delineation of target volumes is critical. Currently, the ideal modalities for delineation of gross tumor volume for ENKTL are unknown. We describe three consecutive cases of localized ENKTL that presented to the Nova Scotia Cancer...

Radiation therapy attempts to deliver ionizing radiation to the tumour and can improve the survival chances and/or quality of life of patients. There are chances of errors and uncertainties in the entire process of radiotherapy that may affect the accuracy and precision of treatment management and decrease degree of conformation. All expected inaccuracies, like radiation dose determination, vol...