Collimator Selection for Quantitative 201Tl Radiopharmaceutical Imaging.
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- KOJIMA Akihiro
- Department of Radiology, Kumamoto University School of Medicine
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- TSUJI Akinori
- Department of Radiology, Kumamoto University School of Medicine
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- NABESHIMA Mitsuko
- Department of Radiology, Kumamoto University School of Medicine
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- TOMIGUCHI Seiji
- Department of Radiology, Kumamoto University School of Medicine
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- NAKASHIMA Rumi
- Department of Radiology, Kumamoto University School of Medicine
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- MATSUMOTO Masanori
- Department of Radiological Technology, College of Medical Science, Kumamoto University
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- TAKAHASHI Mutsumasa
- Department of Radiology, Kumamoto University School of Medicine
Bibliographic Information
- Other Title
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- 定量的な放射性タリウムイメージングのためのコリメータ選択
- テイリョウテキ ナ ホウシャセイ タリウム イメージング ノ タメ ノ コリメ
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Abstract
We investigated the performance of a low-energy (LE) collimator and a medium-energy (ME) collimator in201Tlradiopharmaceutical scintigraphic imaging contaminated with202Tlwhich emittes higher energy photons (440 keV) . Using these collimators, energy spectra, planar images and SPECT images were acquired for three201Tlradiopharmaceutical sources. From the result of the energy spectra measurement, the LE collimator had a large amount of septral penetration by the high energy photons from202Tl, compared with the ME collimator, but both collimators showed the almost same energy distribution at201HgX-ray energy region. In planar and SPECT imaging using single-energy window (W1 : 71 keV±15%), both collimators had the same contrast values for some cold lesions, but for dual-energy window (W1 plus W2 : 167 keV±10%) the ME collimator gave better contrast values than the LE one. In conclusion, the LE collimator is suitable for the single-energy window (W1) imaging and the use of the ME collimator is recommended for the dual-energy window (W1+W2) imaging.
Journal
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- RADIOISOTOPES
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RADIOISOTOPES 43 (7), 411-418, 1994
Japan Radioisotope Association
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Keywords
Details 詳細情報について
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- CRID
- 1390282679131610624
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- NII Article ID
- 130004382674
- 10008538125
- 10007129351
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- NII Book ID
- AN00351589
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- ISSN
- 18844111
- 00338303
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- NDL BIB ID
- 3898358
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed