The purpose of this study is to find the uncertainties in the reconstruction of MR compatible ring-tandem intracavitary applicators of high-dose rate image-based brachytherapy treatment planning using rigid registration of 3D MR and CT image fusion. Tandem and ring reconstruction in MR image based brachytherapy planning was done using rigid registration of CT and MR applicator geometries. Verif...

background and aims: needle stick injuries are a common and serious occupational hazard in the medical settings. so, this study was aimed to assess the incidence of needle stick injury among medical students at tabriz imam reza hospital in 2014. methods: this is a cross-sectional study which its data was collected from 211 medical students in tabriz imam reza hospital. the study was done using ...

For each patient receiving definitive treatment for cervix cancer, several CT/MR imaging studies need to be registered in order to specify the total physical or biological dose to each fixed tissue voxel in an organ system. This turns out to be a difficult problem due to large localized deformations and displacements of bladder, rectum, vagina, uterus and paracervical tissues due to tumor regre...

Résumé. Using a high speed camera, we study the peeling dynamics of an adhesive tape under a constant load with a special focus on the so-called stick-slip regime of the peeling. It is the first time that the very fast motion of the peeling point is imaged. The speed of the camera, up to 16000 fps, allows us to observe and quantify the details of the peeling point motion during the stick and sl...

use the ‘‘handle,’’ likened to an open scroll, to steady the patch strip as it is loaded with aqueous antigens and applied to the patient’s back. The cotton tipped applicator can then be gently reverse rolled out of position once the patch test strip is applied. This method allows for decreased handling of the adhesive surface, increased stability of the patch and ultimately much less risk of a...

The design, analysis, and fabrication of a prototype triaxial applicator is described. The applicator provides both reflected and transmitted signals that can be used to characterize the electromagnetic properties of materials in situ. A method for calibrating the probe is outlined and validated using simulated data. Fabrication of the probe is discussed, and measured data for typical absorbing...

The paper presents an optimization study based on genetic algorithms (GA’s) for a radio-frequency applicator used in heating dielectric band products. The weakly coupled electro-thermal problem is analyzed using 2D-FEM. The design variables in the optimization process are: the voltage of a supplementary “guard” electrode and six geometric parameters of the applicator. Two objective functions ar...