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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
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연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2018.1
- 수록면
- 140 - 148 (9page)
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초록· 키워드
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Purpose: This study was conducted to determine the influence of standoff material on acoustic radiation force impulse (ARFI) measurements in an elasticity phantom by using two different probes. Methods: Using ARFI elastography, 10 observers measured the shear wave velocity (SWV, m/sec) in different lesions of an elasticity phantom with a convex 4C1 probe and a linear 9L4 probe. The experimental setup was expanded by the use of an interposed piece of porcine muscle as standoff material. The probe pressure on the phantom was registered. Results: Faulty ARFI measurements occurred more often when quantifying the hardest lesion (74.0 kPa 4.97 m/sec) by the 9L4 probe with the porcine muscle as a standoff material interposed between the probe and the phantom. The success rate for ARFI measurements in these series was 52.4%, compared with 99.5% in the other series. The SWV values measured with the 9L4 probe were significantly higher (3.33±1.39 m/sec vs. 2.60±0.74 m/sec, P<0.001 in the group without muscle) and were closer to the reference value than those measured with the 4C1 probe (0.25±0.23 m/sec vs. 0.85±1.21 m/sec, P<0.001 in the same group). The SWV values measured when using the muscle as a standoff material were lower than those without the muscle (significant for 9L4, P=0.040). The deviation from the reference value and the variance increased significantly with the 9L4 probe if the muscle was in situ (B=0.27, P=0.004 and B=0.32, P<0.001). In our study, the pressure exerted by the operator had no effect on the SWV values. Conclusion: The presence of porcine muscle acting as a standoff material influenced the occurrence of failed measurements as well as the variance and the accuracy of the measured values. The linear high-frequency probe was particularly affected.
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참고문헌 (40)
참고문헌 신청
Goertz RS / 2011 / An abdominal and thyroid status with acoustic radiation force impulse elastometry: a feasibility study: acoustic radiation force impulse elastometry of human organs / Eur J Radiol 80:e226~e230
Mei M / 2013 / EUS elastography for diagnosis of solid pancreatic masses: a meta-analysis / Gastrointest Endosc 77:578~589
Rustemovic N / 2011 / A pilot study of transrectal endoscopic ultrasound elastography in inflammatory bowel disease / BMC Gastroenterol 11:113
Stock KF / 2010 / ARFI-based tissue elasticity quantification in comparison to histology for the diagnosis of renal transplant fibrosis / Clin Hemorheol Microcirc 46:139~148
Barrault C / 2013 / Non-invasive assessment of liver graft fibrosis by transient elastography after liver transplantation / Clin Res Hepatol Gastroenterol 37:347~352
Mei M / 2013 / EUS elastography for diagnosis of solid pancreatic masses: a meta-analysis / Gastrointest Endosc 77:578~589
Rustemovic N / 2011 / A pilot study of transrectal endoscopic ultrasound elastography in inflammatory bowel disease / BMC Gastroenterol 11:113
Stock KF / 2010 / ARFI-based tissue elasticity quantification in comparison to histology for the diagnosis of renal transplant fibrosis / Clin Hemorheol Microcirc 46:139~148
Barrault C / 2013 / Non-invasive assessment of liver graft fibrosis by transient elastography after liver transplantation / Clin Res Hepatol Gastroenterol 37:347~352
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