Cross Talks on to 201Tl- and 123I-Photopeak Windows with Simultaneous Administration of Them, Using of a Gamma Camera.
スポンサーリンク
概要
- 論文の詳細を見る
<I>Comparison of myocardial imaging with simultaneous administration of</I> <SUP>201</SUP>TlCl <I>and</I> <SUP>123</SUP>I-<I>MIBG are examined. However, as there are both cross talks on to</I> <SUP>201</SUP>Tl-<I>photopeak window from</I> <SUP>123</SUP>I <I>and to</I> <SUP>123</SUP>I-<I>photopeak window from</I> <SUP>201</SUP>Tl, <I>it is important that we understand these quantitative cross talks, previously. The purpose of this study is to estimate the relative cross talk on to each photopeak window from another nuclide. These cross talks determined from gamma rays spectra, which were measured by inputting signals from a gamma camera into a multi-channel (2048 ch.) pulse height analyser</I>.<BR><I>Three types of collimators, which are HR (high resolution), AP (all purpose) for low energy, and ME (medium energy), and cuboid phantoms (size of the base: 10×10 cm</I><SUP>2</SUP>) <I>were used in this experiment. As a result of the cross talk measurement, uses of the HR- and the AP-collimator were not suitable for myocardial imaging with</I> <SUP>123</SUP>I-<I>MIBG, because</I> <SUP>123</SUP>I <I>emits mostly gamma rays with energy of 159 keV and some gamma rays of higher energies, moreover, the lead characteristic X-rays contribute considerably on to</I> <SUP>201</SUP>Tl-<I>photopeak window. When the phantom containing both nuclides of</I> <SUP>201</SUP>Tl <I>and</I> <SUP>123</SUP>I <I>with equal activities was imaged with the gamma camera, the cross talk fractions to the</I> <SUP>201</SUP>Tl-<I>photopeak window were 45-50% for the HR-, 34-40% for the AR-, and 9-10% for ME-collimator. Also, those to the</I> <SUP>123</SUP>I-<I>photopeak window were 9-12%, 9-12%, and 7-11% for the HR-, the AP-, and the ME-collimator, respectively</I>.<BR><I>From the above results, we recommend the use of the ME-collimator for myocardial imaging with simultaneous administration of</I> <SUP>201</SUP>Tl <I>and</I> <SUP>123</SUP>I.
- 社団法人 日本アイソトープ協会の論文
社団法人 日本アイソトープ協会 | 論文
- Distortion of Pulse Height Spectra Due to Absorbers in the Measurement of Low-energy .BETA.-rays with a Silicon Detector.
- タイトル無し
- Estimation of Angular Distributions of the Low-Energy .BETA.-Ray Emission from a Sealed Source.
- Comparison of SPECT images with four kinds of 99nTc collimators.
- Cross Talks on to 201Tl- and 123I-Photopeak Windows with Simultaneous Administration of Them, Using of a Gamma Camera.