Development of High-speed Iterative Refraction Calibration Method of Ultrasound Computed Tomography System for Breast Cancer Screening

DOI
  • Tsubota Yushi
    Hitachi, Ltd., Research & Development Group, Center for Exploratory Research
  • Kawabata Kenichi
    Hitachi, Ltd., Research & Development Group, Center for Exploratory Research
  • Suzuki Atsurou
    Hitachi, Ltd., Research & Development Group, Center for Exploratory Research
  • Terada Takahide
    Hitachi, Ltd., Research & Development Group, Center for Exploratory Research
  • Wu Wenjing
    Hitachi, Ltd., Research & Development Group, Center for Exploratory Research
  • Yamanaka Kazuhiro
    Hitachi, Ltd., Research & Development Group, Center for Exploratory Research

Bibliographic Information

Other Title
  • 乳がん検診向け超音波CT装置の高速な屈折補正再構成法の開発

Abstract

<p>We are developing an ultrasound computed tomography (USCT) system for earlier breast cancer screening. USCT differs from mammography in having great advantages of no X-ray exposure and no compression.Like echography, USCT can show a reflection boundary (structure) image. In addition, sound speed (hardness) distribution in a subject is guessed from the time-of-flight information of transmitted ultrasound waves on the basis of an X-ray CT algorithm.Considering the wave nature of ultrasound to improve image quality generally increases the calculation burden.To achieve both high quality images and high throughput, we developed an iterative refraction calibration method. This method was applied to gel phantom data measured by a USCT prototype with a ring array 10 cm in diameter. As a result, we achieved a calculation speed seven times faster than that of a conventional bent-ray reconstruction with the same contrast on a sound speed image.</p>

Journal

Details 詳細情報について

  • CRID
    1390001205270144768
  • NII Article ID
    130006077217
  • DOI
    10.11239/jsmbe.55annual.401
  • ISSN
    18814379
    1347443X
  • Text Lang
    ja
  • Data Source
    • JaLC
    • CiNii Articles
  • Abstract License Flag
    Disallowed

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