지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 발행연도
- 2017.1
- 수록면
- 39 - 52 (14page)
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초록· 키워드
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Purpose: The aim of this study was to investigate factors that influence arterial Doppler waveforms in an in vitro phantom to provide a more accurate and comprehensive explanation of the Doppler signal. Methods: A flow model was created using a pulsatile artificial heart, rubber or polyethylene tubes, a water tank, and a glass tube. Spectral Doppler tracings were obtained in multiple combinations of compliance, resistance, and pulse rate. Peak systolic velocity, minimum diastolic velocity, resistive index (RI), pulsatility index, early systolic acceleration time, and acceleration index were measured. On the basis of these measurements, the influences of the variables on the Doppler waveforms were analyzed. Results: With increasing distal resistance, the RI increased in a relatively linear relationship. With increasing proximal resistance, the RI decreased. The pulsus tardus and parvus phenomenon was observed with a small acceleration index in the model with a higher grade of stenosis. An increase in the distal resistance masked the pulsus tardus and parvus phenomenon by increasing the acceleration index. Although this phenomenon occurred independently of compliance, changes in the compliance of proximal or distal tubes caused significant changes in the Doppler waveform. There was a reverse relationship between the RI and the pulse rate. Conclusion: Resistance and compliance can alter the Doppler waveforms independently. The pulse rate is an extrinsic factor that also influences the RI. The compliance and distal resistance, as well as proximal resistance, influence the pulsus tardus and parvus phenomenon.
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참고문헌 (21)
참고문헌 신청
Platt JF / 1989 / Duplex Doppler US of the kidney: differentiation of obstructive from nonobstructive dilatation / Radiology 171:515~517
Platt JF / 1990 / Intrarenal arterial Doppler sonography in patients with nonobstructive renal disease: correlation of resistive index with biopsy findings / AJR Am J Roentgenol 154:1223~1227
Platt JF / 1991 / Acute renal failure: possible role of duplex Doppler US in distinction between acute prerenal failure and acute tubular necrosis / Radiology 179:419~423
Kim SH / 1992 / Duplex Doppler US in patients with medical renal disease: resistive index vs serum creatinine level / Clin Radiol 45:85~87
Bige N / 2012 / Renal arterial resistive index is associated with severe histological changes and poor renal outcome during chronic kidney disease / BMC Nephrol 13:139
Platt JF / 1990 / Intrarenal arterial Doppler sonography in patients with nonobstructive renal disease: correlation of resistive index with biopsy findings / AJR Am J Roentgenol 154:1223~1227
Platt JF / 1991 / Acute renal failure: possible role of duplex Doppler US in distinction between acute prerenal failure and acute tubular necrosis / Radiology 179:419~423
Kim SH / 1992 / Duplex Doppler US in patients with medical renal disease: resistive index vs serum creatinine level / Clin Radiol 45:85~87
Bige N / 2012 / Renal arterial resistive index is associated with severe histological changes and poor renal outcome during chronic kidney disease / BMC Nephrol 13:139
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