A comparison of the effectiveness of thermoluminescent crystals LiF:Mg,Ti, and LiF:Mg,Cu,P for clinical dosimetry

• Published in: Medical physics (Lancaster) Vol. 24; no. 9; pp. 1527 - 1529
• Main Authors: Harris, Christie K., Elson, Howard R., Lamba, Michael A. S., Foster, Alvis E.
• Format: Journal Article
• Language: English
• Published: United States American Association of Physicists in Medicine 01-09-1997
• Subjects: 87.55.05; Biophysical Phenomena; Biophysics; Copper; Crystallization; Dosimetry; Evaluation Studies as Topic; Fluorides; Humans; Lithium Compounds; Magnesium; Phosphorus; Physicists; Radiation therapy equipment; Reproducibility of Results; Sensitivity and Specificity; Thermoluminescence; thermoluminescent dosimeters; Thermoluminescent Dosimetry - instrumentation; Thermoluminescent Dosimetry - methods; Thermoluminescent Dosimetry - statistics & numerical data; Titanium; 87.55.05
• ISSN: 0094-2405; 2473-4209
• DOI: 10.1118/1.598042

This study compared the relative effectiveness of TLD crystals LiF:Mg,Ti (TLD-100) and LiF:Mg,Cu,P (TLD-700H) for clinical dosimetry, focusing on reproducibility, linearity, and energy response. Experimental results indicated that TLD-700H was superior to TLD-100 with regard to reproducibility, lack of supralinearity, and the absence of variation in TL signal with radiation quality. TLD-700H also had the additional advantages of higher sensitivity and immediate readability. The investigators concluded that this relatively new TLD crystal shows promising potential for clinical dosimetry.