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2012 Vol.31, Issue 8 Preview Page
Improvements of Pulse Doppler Gap Filling Algorithms for Portable Medical Ultrasound Imaging System

휴대용 초음파진단기를 위한 펄스 도플러 갭 필링 알고리즘의 개선

MooHo Bae1
,
Hyung-Jun An1*
배 무호1
,
안 형준1*
1한림대학교 정보전자공학대학 전자공학과
*Corresponding Author
30 November 2012. pp. 580-589
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Abstract

In this paper, we studied on Doppler gap-filling algorithms suitable for a portable or low-cost medical ultrasound imaging system, and as a result, found out algorithms based on mirroring or autoregressive model. Moreover, controlling the computational demand in the proper range, we improved the performances of these algorithms by solving their problems. Effectiveness of these modified algorithms is verified by computer simulations and experiments which used artificially generated Doppler signals and Doppler data acquired from human body through an actual ultrasound system.

Keywords
Medical ultrasound system
Pulse Doppler mode
Gap filling
Mirroring
Autoregressive model

이 논문에서는 휴대용, 또는 저가형 초음파진단기에 비교적 고급 기능인 도플러 갭 필링 모드를 적용하고자 할 때 적합한 알고리즘들을 찾아보았고, 그 결과 미러링 기반, 또는 자기회귀 모델 기반의 알고리즘들을 찾을 수 있었다. 또, 계산량이 지나치게 많아지지 않는 범위 내에서, 그러한 알고리즘들의 성능의 문제점을 보완하여 더욱 개선시켰다. 수정된 알고리즘들은 인공적으로 발생시킨 도플러 신호 및 실제 초음파장비를 써서 인체로부터 획득한 도플러 데이터를 써서 시뮬레이션 및 실험을 함으로써 유효성을 확인하였다.

키워드
초음파진단기
펄스도플러 모드
갭 필링
미러링
자기회귀모델
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Information
  • Publisher :The Acoustical Society of Korea
  • Publisher(Ko) :한국음향학회
  • Journal Title :The Journal of the Acoustical Society of Korea
  • Journal Title(Ko) :한국음향학회지
  • Volume : 31
  • No :8
  • Pages :580-589
  • Received Date : 2012-07-13
  • Revised Date : 2012-09-21
  • Accepted Date : 2012-10-05
  • DOI :https://doi.org/10.7776/ASK.2012.31.8.580
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