PURPOSE To compare dosimetry for head and neck cancer patients, calculated with TG-43 formalism and a commercially available grid-based Boltzmann solver. MATERIAL AND METHODS This study included 3D-dosimetry of 49 consecutive brachytherapy head and neck cancer patients, computed by a grid-based Boltzmann solver that takes into account tissue inhomogeneities as well as TG-43 formalism. 3D-trea...

Yttrium-90 radioembolization (Y-RE) is a well-established therapy for the treatment of hepatocellular carcinoma (HCC) and also of metastatic liver deposits from other malignancies. Nuclear Medicine and Cath Lab diagnostic imaging takes a pivotal role in the success of the treatment, and in order to fully exploit the efficacy of the technique and provide reliable quantitative dosimetry that are ...

A method is described for computing patient-specific absorbed dose rates to active marrow which accounts for spatial variation in bone volume fraction and marrow cellularity. A module has been added to the 3D Monte Carlo dosimetry program DPM to treat energy deposition in the components of bone spongiosa distinctly. Homogeneous voxels in regions containing bone spongiosa (as defined on CT image...

Abstract Strontium 90 (Sr-90) has been commonly used in the radiation treatment of pterygia eye. A radioactive plaque is placed an applicator onto surface eyeball for a specific length time to achieve desired dose. Dose usually calculated using source activity and decay, as well distance from it However, this assumes flat eye surface. This investigation 3D printing produce anthropomorphic phant...

INTRODUCTION Technologies with millimeter-waves (MMWs) have been popularized in our daily life. It warrants to investigate biological effect to concern MMW exposure. In the recent research, ocular injuries caused by MMW exposure were discussed[1]. In that in-vivo study, rabbit eyes were exposed to MMW at 60GHz to observe clinical courses of ocular damages. It is not clear the causal connection ...

We validated 3D radiochromic film dosimetry for volumetric modulated arc therapy (VMAT) using a newly developed spiral water phantom. The phantom consists of a main body and an insert box, each of which has an acrylic wall thickness of 3 mm and is filled with water. The insert box includes a spiral film box used for dose-distribution measurement, and a film holder for positioning a radiochromic...

Radiochromic and radiographic films are widely used for radiation dosimetry due to the advantage of high spatial resolution and two-dimensional dose measurement. Different types of scanners, including various models of flatbed scanners, have been used as part of the dosimetry readout procedure. This paper focuses on the characterization of the EBT2 film response in combination with a Microtek S...