TOPAZ-Pico – это компактный многоканальный анализатор, предназначенный для обработки сигналов от стандартных сцинтилляционных блоков детектиро- вания на основе кристаллов NaI(Tl), LaBr3(Ce), LaCl3(Ce) и других, соединённых с фотоэлектронными умножителями (ФЭУ).

TOPAZ-X – это компактный многоканальный анали- затор, предназначенный для обработки сигналов от блоков детектирования на базе кремниевых детекто- ров высокого разрешения с электрическими охлади- телями, использующими эффект Пельте. Такие блоки детектирования применяются в различных областях рентгеновской спектрометрии, в частности, в рентге- но-флуоресцентном анализе.

В статье «Fundamentals of Materials, Techniques, and Instrumentation for OSL and FNTD Dosimetry» изложены основы OSLи FNTD технологии для задач индивидуальной дозиметрии. Статья написана основоположником данной технологии Марком Аксельродом.

Метод оптически стимулированной люминесценции (OSL) уже стал успешным инструментом в области индивидуальной дозиметрии, геологическом и археологическом датировании, а также в системах получения изображений в радиационной диагностике. В этом обзоре кратко описывается история OSL технологии. Значительные успехи были достигнуты в недавно проведенном теоретическом исследовании OSL, чтобы объяснить поведение чувствительных к радиации материалов с несколькими типами дозиметрических ловушек, центров рекомбинации и конкурирующими глубинными ловушками. Прогресс в инженерии материалов и детекторов позволил провести новые и перспективные разработки в отношении OSL приложений в медицинской области. Особое внимание уделяется Al2O3: C, как материалу, используемому во многих дозиметрических приложениях. Настоящая технология может обеспечить изготовление волоконные детекторов Al2O3: C с диаметром до 300 мкм. Новая оптоволоконная система RL / OSL имеет высокий потенциал для использования в in vivo и in vitro дозиметрии, так же как в лучевой терапии и диагностической маммографии. Описываются различные аспекты использования аппаратуры, алгоритмов обработки данных, измерений после облучения и в реальном времени. © 2007 Elsevier Ltd. Все права защищены.

Commercially available surface diodes are found to have as great as
12% change in sensitivity with the angle of incidence of radiation. This work is a study of the cause of angular dependence in diode sensitivity and how it can be decreased.

Purpose: A new type of in vivo dosimeter, an optically stimulated luminescent dosimeter
OSLD, has now become commercially available for clinical use. The OSLD is a plastic disk infused with aluminum oxide doped with carbon Al2O3:C. Crystals of Al2O3 :C, when exposed to ionizing radiation, store energy that is released as luminescence 420 nm when the OSLD is illuminated with stimulation light 540 nm. The intensity of the luminescence depends on the dose absorbed by the OSLD and the intensity of the stimulation light. The effects of accumulated dose on OSLD response were investigated.

Purpose: Optically stimulated luminescence (OSL) dosimetry has been recently introduced in radiation therapy as a potential alternative to the thermoluminescent dosimeter (TLD) system. The aim of this study was to investigate the feasibility of using OSL point dosimeters in the energy range used in diagnostic imaging.

Purpose: The aim of this work was to create a mailable phantom with measurement accuracy suitable for Radiological Physics Center (RPC) audits of high dose-rate (HDR) brachytherapy sources at institutions participating in National Cancer Institute-funded cooperative clinical trials. Optically stimulated luminescence dosimeters (OSLDs) were chosen as the dosimeter to be used with the phantom.

Purpose: To investigate the effect of energy (kVp) and filters (no filter, half Bowtie, and full Bowtie) on the dose response curves of the Gafchromic XRQA2 film and nanoDot optical stimulated luminescence dosimeters (OSLDs) in CBCT dose fields. To measure surface and internal doses received during x-ray volume imager (XVI) (Version R4.5) and on board imager (OBI) (Version 1.5) CBCT imaging protocols using these two types of dosimeters.

Radiation treatments of cancer patients require deliveries of high dose, usually 180 cGy or more per day, for 30–40 consecutive daily treatments. In vivo dosimetry is desired for cancer patients to ensure that the patient is not overexposed or that the exposure occurred in the desired region.

Purpose: For external beam in vivo measurements, the dosimeter is normally placed on the patient’s skin, and the dose to a point of interest inside the patient is derived from surface measurements. In order to obtain accurate and reliable measurements, which correlate with the dose values predicted by a treatment planning system, a dosimeter needs to be at a point of electronic equilibrium.

Purpose: To show the feasibility of clinical implementation of OSLDs for high dose-rate (HDR) in vivo dosimetry for gynecological and breast patients. To discuss how the OSLDs were characterized for an Ir-192 source, taking into account low gamma energy and high dose gradients. To describe differences caused by the dose calculation formalism of treatment planning systems.

Purpose: Optically stimulated luminescent detectors (OSLDs) are quickly gaining popularity as passive dosimeters, with applications in medicine for linac output calibration verification, brachytherapy source verification, treatment plan quality assurance, and clinical dose measurements.

Purpose: Optically stimulated luminescent detectors (OSLDs) have a number of advantages in radiation dosimetry making them excellent dosimeters for quality assurance and patient dose verification. Although the dosimeters have been investigated in several modalities, relatively little work has been done in examining the dosimeters for use in clinical proton beams.

Purpose: Measurements were taken with optically stimulated luminescence dosimeters (OSLDs) and with RTQA2 radiochromic film to evaluate the use of each for in vivo dosimetry with intraoperative radiotherapy of the breast.

Optically stimulated luminescent detectors, which are widely used in radiation protection, offer a number of potential advantages for application in radiation therapy dosimetry. Their introduction into this field has been somewhat hampered by the lack of information on their radiation response in megavoltage beams.

Purpose: Micro-CT is considered to be a powerful tool to investigate various models of disease on anesthetized animals. In longitudinal studies, the radiation dose delivered by the micro-CT to the same animal is a major concern as it could potentially induce spurious effects in experimental results. Optically stimulated luminescence dosimeters (OSLDs) are a relatively new kind of detector used in radiation dosimetry for medical applications.

This article investigates the performance of Al2O3 :C optically stimulated luminescence dosimeters
OSLDs for application in radiotherapy. Central-axis depth dose curves and optically stimulated luminescence
OSL responses were obtained in a water phantom for 6 and 18 MV photons, and for 6, 9, 12, 16, and 20 MeV electron beams from a Varian 21EX linear accelerator.