![]() ![]() ![]() The main objective of the present study was to upgrade a clinical gamma camera to obtain high resolution tomographic images of small animal organs. [Instituto Nacional de Pesquisas Espaciais (INPE), Sao Jose dos Campos, SP (Brazil). de Neurociencias e Ciencias do Comportamento Braga, J. [Universidade de Sao Paulo (FMRP/USP), Ribeirao Preto, SP (Brazil). [Faculdade de Medicina de Sao Jose do Rio Preto (FAMERP), SP (Brazil). Galvis-Alonso, O.Y., E-mail: [Faculdade de Medicina de Sao Jose do Rio Preto (FAMERP), SP (Brazil). We confirmed that the gamma camera had sufficient sensitivity and high quantitative accuracy for example, a weak hot spot (0.9 μSv/h) around a tree root could be detected within 45 min in a low dose rate field test, and errors of measured dose rates with point sources were less than 7% in a dose rate accuracy test.Ī clinical gamma camera-based pinhole collimated system for high resolution small animal SPECT imagingĮnergy Technology Data Exchange (ETDEWEB) From the sensitivity test, we found that the effective sensitivity was about 21 times higher than that of the gamma camera for high dose rate fields which we had previously developed. We tested basic performances of the developed gamma camera and carefully examined effects of the three methods. In order to improve the sensitivity of the pinhole type semiconductor gamma camera, we adopted three methods: a signal processing method to set the discriminating level lower, a high sensitivity pinhole collimator and a smoothing image filter that improves the efficiency of the source identification. We developed a pinhole type gamma camera, using a compact detector module of a pixelated CdTe semiconductor, which has suitable sensitivity and quantitative accuracy for low dose rate fields. Ueno, Yuichiro Takahashi, Isao Ishitsu, Takafumi Tadokoro, Takahiro Okada, Koichi Nagumo, Yasushi Fujishima, Yasutake Yoshida, Akira Umegaki, Kikuo The adapter ring is so designed to accommodate a variety of holders so as to enable the scanning of many different areas of a patient's anatomy by the scintillation cameraĭevelopment of a high sensitivity pinhole type gamma camera using semiconductors for low dose rate fields The adapter ring is secured directly to the pinhole collimator while the holder is adjustably mounted on the adapter. International Nuclear Information System (INIS)Ī patient restraining device for use with the pinhole collimator of a conventional Gamma Scintillation Camera, the restraining device being made of an adapter ring and a patient holder. It sold over 2,580,000 copies and became the eighth best-selling single in Japan.Patient restraining device for the pinhole collimator and gamma scintillation camera His most successful single was "Love Story wa Totsuzen ni" (1991), the theme song of a Japanese TV drama called Tokyo Love Story. He produced many hit singles as singer-songwriter, such as "Little Tokyo" (1989), "Itsuka Dokokade" (1992), "Tsutaetai Koto ga Arunda" (1997) and "Kirakira" (2002). In 1985 he began work as a solo musician. The group's most successful singles-"Sayonara" (1979), "Yes-No" (1980), and "Kimi ga Uso o Tsuita" (1984)-were written by Oda. He was the leader of Off Course from 1969 to 1989, and has done solo work since 1985.Īs the vocalist of Off Course, Oda wrote many Japanese standard numbers in the 70s and 80s. Kazumasa Oda (小田和正 Oda Kazumasa, born September 20, 1947) is a Japanese singer-songwriter, and composer.
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