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MOTION-TRACKING X-RAY CT IMAGE PROCESSING METHOD AND MOTION-TRACKING X-RAY CT IMAGE PROCESSING DEVICE

外国特許コード F130007545
整理番号 S2012-0172-N0
掲載日 2013年7月16日
出願国 世界知的所有権機関(WIPO)
国際出願番号 2012JP008088
国際公開番号 WO 2013/094186
国際出願日 平成24年12月18日(2012.12.18)
国際公開日 平成25年6月27日(2013.6.27)
優先権データ
  • 特願2011-276545 (2011.12.18) JP
発明の名称 (英語) MOTION-TRACKING X-RAY CT IMAGE PROCESSING METHOD AND MOTION-TRACKING X-RAY CT IMAGE PROCESSING DEVICE
発明の概要(英語)

Provided are a motion-tracking x-ray CT image processing method and a motion-tracking x-ray CT image processing device with which it is possible to simultaneously estimate motion and CT images, and to minimize motion artifacts. [Solution] An x-ray CT image processing method which carries out a statistical estimate in prior knowledge relating to the movement and the x-ray absorption coefficient of a measurement subject comprises: a step of hypothesizing that the measurement subject changes smoothly over time, and defining a first probability model (prior knowledge of the measurement subject over all times) relating to movement and a second probability model (projected image observation model over all times) relating to observation

and a step of carrying out a statistical estimate dependent on both the first probability model and the second probability model. The first probability model relating to the movement of the measurement subject and the second model relating to observation are defined as probability models with which statistical estimates are carried out at the outset, and motion and CT images are simultaneously estimated by carrying out induction based on the probability models.

  • 出願人(英語)
  • ※2012年7月以前掲載分については米国以外のすべての指定国
  • NATIONAL UNIVERSITY CORPORATION KYOTO UNIVERSITY,
  • MAEDA, SHINICHI,
  • TANAKA, TAKUMI,
  • ISHII, SHIN
  • 発明者(英語)
  • MAEDA, SHINICHI,
  • TANAKA, TAKUMI,
  • ISHII, SHIN
国際特許分類(IPC)
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