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2014 Fiscal Year Final Research Report

Development of an image reconstruction algorithm for sensitivity improvement of ultra-high spatial resolution SPECT for molecular functional quantitation in a selected small region

Research Project

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Project/Area Number 23500575
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Medical systems
Research InstitutionNational Cardiovascular Center Research Institute

Principal Investigator

ZENIYA Tsutomu  独立行政法人国立循環器病研究センター, 研究所, 室長 (50443487)

Co-Investigator(Renkei-kenkyūsha) IIDA Hidehiro  独立行政法人国立循環器病研究センター, 研究所, 部長 (30322720)
WATABE Hiroshi  大阪大学, 医学系研究科, 准教授 (40280820)
HAYASHI Takuya  独立行政法人理化学研究所, 分子イメージング科学研究センター, 副チームリーダー (50372115)
KOSHINO Kazuhiro  独立行政法人国立循環器病研究センター, 研究所, 研究員 (90393206)
HIRANO Yoshiyuki  独立行政法人国立循環器病研究センター, 研究所, 派遣研究員 (00423129)
KUDO Hiroyuki  筑波大学, システム情報工学研究科, 教授 (60221933)
TERAMOTO Noboru  大阪大学, 医学系研究科, 特任研究員 (40372114)
Project Period (FY) 2011-04-28 – 2015-03-31
Keywords画像診断 / 核医学 / SPECT / 画像再構成アルゴリズム / 分子機能定量 / 高解像度 / トランケーション / マルチピンホールコリメータ
Outline of Final Research Achievements

We developed an image reconstruction algorithm for ultra-high spatial resolution SPECT system to quantify molecular functions in a selected small region. This algorithm is not affected by lack of data (i.e. truncation). In addition, we improved this algorithm for multi-pinhole SPECT system to improve sensitivity. SPECT study was performed using 8-pinhole collimator with 55-mm field of view. This study showed significant sensitivity improvement which permits short scan.

Free Research Field

医用画像工学

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Published: 2016-06-03  

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