(Al2o3:C) and Beryllium Oxide (Beo) Optically Stimulated Luminescence (OSL) Detectors for the Purpose of Measuring Organ Dose in a Phantom for Diagnostic Radiology

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(Al2o3:C) and Beryllium Oxide (Beo) Optically Stimulated Luminescence (OSL) Detectors for the Purpose of Measuring Organ Dose in a Phantom for Diagnostic Radiology

Abstract ID: 19063 Title: Characterization of Optically Stimulated Luminescence Detectors for Organ Dose Phantom Measurement in Diagnostic Radiology Purpose:To evaluate the feasibility and accuracy of using aluminum oxide doped with carbon (Al2O3:C) and beryllium oxide (BeO) optically stimulated luminescence (OSL) detectors for the purpose of measuring organ dose in a phantom for diagnostic radiology. Methods:The energy response of each type of detector as a function of kVp and in-phantom depth was determined using blocks of Polymethyl methacrylate (PMMA) and an ionization chamber (0.4 cm3). The Al2O3:C detectors used in this study were cut from LuxelTM tape into 4 mm diameter circles of thickness 0.3 mm. The BeO detectors used in this study are ~4.7 mm x ~4.7 mm x 0.5 mm chips. Clinical irradiations were performed using a radiographic unit. The BeO signal was read using a RisÃ¸ TL/OSL-DA-15 automated reader and the Al2O3:C signal was read using a custom-built light emitting diode (LED)-based reader system. The results were compared to those obtained from LiF:Mg,Ti thermoluminescence detectors (TLD). Results:The energy-dependent response as a function of depth within the phantom for BeO and Al2O3:C were found to be < 8% and < 10%, respectively. For comparison, the TLDs were found to have an energy-dependent response of ~8%. The OSL detectors both offered reproducibility better than 5%. Conclusions:The proposed method of using BeO and Al2O3:C OSL detectors to perform in- phantom measurements has a comparable in-phantom energy response to that of TLDâ€™s and shows improved reproducibility of the measurements when compared to TLDâ€™s. Given the flexibility and accuracy of OSL detectors for various readout techniques, OSL detectors have a great potential to be used in clinical organ dose measurement for diagnostic x-ray exams. .

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Date of Issue: 17 June 2015 SAFETY DATA SHEET 1. SUBSTANCE AND SOURCE IDENTIFICATION Product Identifier SRM Number: 1877 SRM Name: Beryllium Oxide Powder Other Means of Identification: Not applicable. Recommended Use of This Material and Restrictions of Use This Standard Reference Material (SRM) is intended for use in laboratory analysis and health research for the development and validation of analytical methods and instruments used to determine beryllium, as well as for proficiency testing of laboratories involved in beryllium determinations. A unit of SRM 1877 consists of one bottle containing 20 g of beryllium oxide powder. Company Information National Institute of Standards and Technology Standard Reference Materials Program 100 Bureau Drive, Stop 2300 Gaithersburg, Maryland 20899-2300 Telephone: 301-975-2200 Emergency Telephone ChemTrec: FAX: 301-948-3730 1-800-424-9300 (North America) E-mail: [email protected] +1-703-527-3887 (International) Website: http://www.nist.gov/srm 2. HAZARDS IDENTIFICATION Classification Physical Hazard: Not classified. Health Hazard: Acute Toxicity, Inhalation Category 2 Skin Corrosion/Irritation Category 2 Serious Eye Damage/Irritation Category 2B Skin Sensitization Category 1 Carcinogenicity Category 1A STOT-Repeat Exposure Category 1 Label Elements Symbol Signal Word DANGER Hazard Statement(s) H330 Fatal if inhaled. H315+H320 Causes skin and eye irritation. H317 May cause an allergic skin reaction. H350 May cause lung cancer. H372 Causes damage to lungs through prolonged or repeated inhalation. Precautionary Statement(s) P201 Obtain special instructions before use. P202 Do not handle until all safety precautions have been read and understood. P260 Do not breathe dust. P264 Wash hands thoroughly after handling.
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