Aberration correction with low-frequency transmission for medical acoustic imaging

Hirofumi Taki, Toru Sato

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

Phase aberration is one of the major causes of deterioration in the quality of medical acoustic imaging. To suppress the effect of aberration, we employ a focused transmit beam with a low center frequency for the calculation of an aberration correction value set. The aberration correction value set is applied to an imaging process utilizing high-frequency transmission. To evaluate the focus quality under severe aberration conditions, we introduce an evaluation criterion for beam patterns using the second moment of the acoustic field. The result implies that in severe aberration conditions without aberration correction, a low-frequency transmission acquires a better beam pattern, and the aberration correction value set for a high-frequency transmission should be calculated using a low-frequency transmission.

Original languageEnglish
Article number07HF08
JournalJapanese journal of applied physics
Volume49
Issue number7 PART 2
DOIs
Publication statusPublished - 2010 Jul 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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