Indicator of small calcification detection in ultrasonography using decorrelation of forward scattered waves

Hirofumi Taki, Takuya Sakamoto, Makoto Yamakawa, Tsuyoshi Shiina, Toru Sato

Research output: Contribution to journalArticle

Abstract

For the improvement of the ability in detecting small calcifications using Ultrasonography (US) we propose a novel indicator of calcifications in an ultrasound B-mode image without decrease in frame rate. Since the waveform of an ultrasound pulse changes at a calcification position, the decorrelation of adjacent scan lines occurs behind a calcification. Therefore, we employ the decorrelation of adjacent scan lines as an indicator of a calcification. The proposed indicator depicted wires 0.05 mm in diameter at 2 cm depth with a sensitivity of 86.7% and a specificity of 100%, which were hardly detected in ultrasound B-mode images. This study shows the potential of the proposed indicator to approximate the detectable calcification size using an US device to that of an X-ray imager, implying the possibility that an US device will become a convenient, safe, and principal clinical tool for the screening of breast cancer.

Original languageEnglish
Pages (from-to)556-560
Number of pages5
JournalWorld Academy of Science, Engineering and Technology
Volume71
Publication statusPublished - 2010 Nov 1

Keywords

  • Calcification
  • Decorrelation
  • Forward scattered wave
  • Ultrasonography

ASJC Scopus subject areas

  • Engineering(all)

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