INTRODUCTION The Czech thermoluminescent dosimeters (TLD) quality assurance network was established in 1997. Its aim is to pursue a regular independent quality audit in Czech radiotherapy centres and to support state supervision. MATERIALS AND METHODS The audit is realised via mailed TL dosimetry. The TLD system consists of encapsulated LiF:Mg,Ti powder (type MT-N) read with Harshaw manual re...

Accurate estimation of the surface dose in radiotherapy patients with head and neck cancer is very important terms treatment. The aim this study to evaluate for intensity-modulated (IMRT) using thermoluminescent dosimeters (TLDs). In addition, it aimed examine estimates treatment planning system (TPS) different grid sizes. Before computed tomography (CT) images were taken 15 patients, 5 points ...

background: radioiodine therapy has proven to be an effective method in the treatment of patients with differentiated thyroid carcinoma after thyroidectomy. the scope of this study is to describe a method to obtain the dose of organs using medical internal radiation dosimetry (mird) method. at the end, the results of mird calculations were compared with thermoluminescent dosimeter (tld-100). ma...

We describe an optically transparent, laser heated, thermoluminescent glass dosimeter that is used for fiber-optic-coupled remote radiation monitoring. The glass consists of ZnS nanocrystallites embedded in a Vycor glass host, doped with Cu and Nd ions. An 807 nm, 1 W GaAlAs laser is used to rapidly heat microscopic regions, surrounding the Nd ions, in the composite glass to stimulate blue-gree...

This work intend to identify and follow up quality control parameters to improve thermoluminescence dosemeter (TLD) system used for personal dosimetry in ionizing radiation metrology laboratory (IRML). Characterization of personal dosimetry system has presented in terms of the stability of reader calibration factors, linearity of response for Cs as reference radiation source, energy and angular...

Since the beginning of its use, radiation has already presented harm, justifying the necessity of controlled use. In order to monitor its effects and even avoid them, dosimetry has arisen. For the purpose of ensured all the necessary safety and monitor areas where there is radiation use, a lot of devices able to identify and quantify many types of radiation were developed. However, some these d...