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N-365 다목적팬텀에서 초음파진단장치의 음속변화 효과

The Effect of Acoustic Velocity of Ultrasonographic Equipment Using an N-365 Multipurpose Phantom

  • 김연민 (원광보건대학교 방사선과) ;
  • 심재구 (대구보건대학교 방사선과) ;
  • 김상현 (신한대학교 방사선학과)
  • Kim, Yon-Min (Department of Radiotechnology, Wonkwang Health Science University) ;
  • Shim, Jae-Goo (Department of Radiologic Technology, Daegu Health College) ;
  • Kim, Sang-Hyun (Department of Radiological Science, Shinhan University)
  • 투고 : 2017.06.20
  • 심사 : 2017.08.31
  • 발행 : 2017.08.31

초록

초음파영상 진단장치의 성능을 평가할 때, 초음파장비에서 제공하는 음속변화 파라메타를 변화시킴에 따른 공간분해능의 변화를 알아보고자 하였다. 익산 소재 A기관에서 사용중인 초음파 진단장치에서 3.0 ~ 5.0 MHz 볼록형 탐촉자를 이용하여 초음파팬텀영상를 얻었다. N-365 다목적 초음파팬텀으로 종거리 측정정확도, 종 횡 해상도를 측정하였다. 같은 방법으로 초음파장치의 음속을1580 m/sec부터 1400 m/sec 까지 6단계로 변화시켜 측정 값의 차이가 있는지 image J 프로그램을 이용하여 반치폭을 측정하였다. 측정 결과, 횡측해상도는 속도변화에 따라 1.91 mm ~ 5.3 mm까지 측정되었으며, 음속 1420 m/sec 일 때 반치폭 1.91 mm로 가장 작게 측정되었다. 종측해상도는 1.03 mm ~ 1.14 mm까지 측정되었으며, 음속 1400 m/sec 일 때 반치폭 1.03 mm 로 가장 작게 측정되었다. 초음파장치의 음속이 느려질수록 종측정 길이가 짧아지는 상관관계를 보였다.

To evaluate the performance of ultrasound imaging system, we investigated the change of spatial resolution according to changing sonic velocity change parameter provided by ultrasound equipment. Ultrasound phantom images were obtained using a 3.0 ~ 5.0 MHz convex transducer in an ultrasound diagnostic device used at a medical institution located at Iksan. N-365 multi-purpose ultrasound phantom was used to measure longitudinal distance measurement accuracy and longitudinal and transverse resolution. In the same manner, the sonic velocity of the ultrasound equipment was changed from 1580 m/sec to 1400 m/sec in six steps, and the full width at half maximum(FWHM) was measured using the image J program to determine whether the measured values were different. As a result, lateral resolution was measured from 1.91 mm to 5.3 mm according to the speed change, and the smallest FWHM was 1.91 mm at 1420 m/sec. The axial resolution was measured from 1.03 mm to 1.14 mm according to the speed change, and the smallest FWHM was 1.03 mm at 1400 m/sec. The slower the sound velocity of the ultrasound equipment, the shorter the length of longitudinal measurement.

키워드

참고문헌

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피인용 문헌

  1. 근골격계 초음파검사에 사용되는 표재성 검사용 젤 패드 물질의 유용성 평가 vol.15, pp.6, 2017, https://doi.org/10.7742/jksr.2021.15.6.899