fractional flow reserve
Analysis of factors effecting myocardial fractional flow reserve
... - 국 문 요 약 - 심 근 분 획 혈 류 예 비 력 에 영 향 을 주 는 요 인 에 대 한 분 석 목 적 : 관동맥 질환에서 심근 분획혈류예비력(myocardial fractional flow reserve) 은 관동맥의 기능적 협착 정도뿐 아니라 혈관내초음파 검사로 평가한 형태학적 협착 정도도 잘 반영하는 것으로 알려져 있다. 그러나 심근 ...
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Non-randomized comparison between revascularization and deferral for intermediate coronary stenosis with abnormal fractional flow reserve and preserved coronary flow reserve
... pressure-derived fractional flow reserve (FFR) has become a standard method for identifying functionally significant epicardial coronary artery stenosis 1–3 ...Coronary flow reserve ...
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Use of the Instantaneous Wave-free Ratio or Fractional Flow Reserve in PCI
... of flow measurements to make safe decisions about revascularization, 1,2 but this approach was soon superseded by the use of fractional flow reserve (FFR), which measures pressure as a sur- ...
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THE INFLUENCES OF SWIRL FLOW ON FRACTIONAL FLOW RESERVE IN MILD/MODERATE/SEVERE STENOTIC CORONARY ARTERIAL MODELS
... Swirl flow is often found in proximal coronary arteries, because the aortic valves can induce swirl flows in the coronary artery due to vortex ...investigate fractional flow reserve ...
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Clinical Outcomes of Deferred Lesions with Angiographically Insignificant Stenosis but Low Fractional Flow Reserve
... Low Fractional Flow Reserve Joo Myung Lee, MD, MPH, PhD; Bon-Kwon Koo, MD, PhD; Eun-Seok Shin, MD, PhD; Chang-Wook Nam, MD, PhD; Joon-Hyung Doh, MD, PhD; Xinyang Hu, MD, PhD; Fei Ye, MD, PhD; ...
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Diagnostic Accuracy of a Novel On-site Virtual Fractional Flow Reserve Parallel Computing System
... Purpose: To evaluate the diagnostic accuracy of a novel on-site virtual fractional flow reserve (vFFR) derived from coronary com- puted tomography angiography (CTA). Materials and Methods: We ...
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Clinical implications of three-vessel fractional flow reserve measurement in patients with coronary artery disease
... FFR is an invasive physiologic index that represents the degree of flow reduction due to an epicardial stenosis. 14 Therefore, the sum of FFR values of three major epicardial vessels can be considered as a ...
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Fractional Flow Reserve Versus Angiography in Left Circumflex Ostial Intervention After Left Main Crossover Stenting
... Fractional flow reserve measurements FFR is defined as the ratio between distal coronary pres- sure and aortic pressure, both measured simultaneously at ma- ximal ...
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Three Dimensional Quantitative Coronary Angiography Can Detect Reliably Ischemic Coronary Lesions Based on Fractional Flow Reserve
... Since introduction by Dr. Sones in the 1960s, contrast coro- nary angiography has been a mainstay in diagnosis of coronary artery disease. It visualizes the lumen of the coronary arteries, quantifies diameter stenosis ...
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Future Directions in Coronary CT Angiography: CT-Fractional Flow Reserve, Plaque Vulnerability, and Quantitative Plaque Assessment
... blood flow conditions within the 3D ...Noninvasive Fractional Flow Reserve [DISCOVER-FLOW]), FFR was estimated from CFD modeling in 158 vessels from 103 patients concurrently undergoing ...
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Comparison of clinical outcome after revascularization versus conservative treatment in patients with borderline fractional flow reserve measurements
... Bar F, Hoorntje J, Koolen J, Wijns W, de Bruyne B: Percutaneous coronary intervention of functionally nonsignificant stenosis: 5-year follow-up of the DEFER Study. J Am Coll Cardiol 49: 2105-2111, 2007 16. Seo MK, Koo ...
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Clinical Outcomes in Patients with Deferred Coronary Lesions according to Disease Severity Assessed by Fractional Flow Reserve
... Keywords: Fractional Flow Reserve; Coronary Artery Disease; Prognosis Ki-Bum Won, 1,2 Chang-Wook Nam, 1 Yun-Kyeong Cho, 1 Hyuck-Jun Yoon, 1 Hyoung-Seob Park, 1 Hyungseop Kim, 1 Seongwook Han, 1 ...
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Clinical Relevance of Functionally Insignificant Moderate Coronary Artery Stenosis Assessed by 3-Vessel Fractional Flow Reserve Measurement
... Supplemental Methods Sample Size Calculation of the 3V FFR-FRIENDS Study The primary hypothesis of the 3V FFR-FRIENDS 1 study was that patients with low total sum of 3-vessel fractional flow reserve ...
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Outcomes of Percutaneous Coronary Intervention in Intermediate Coronary Artery Disease Fractional Flow Reserve–Guided Versus Intravascular Ultrasound–Guided
... ⫽ fractional flow reserve; IVUS ⫽ intravascular ultrasound; LAD ⫽ left anterior descending coronary artery; LVEF ⫽ left ventricular ejection fraction; PCI ⫽ percutaneous coronary ...
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Relationship Between Intravascular Ultrasound Parameters and Fractional Flow Reserve in Intermediate Coronary Artery Stenosis of Left Anterior Descending Artery
... - 국문요약 - 중등도 관상동맥 협착 질환에서 혈관내초음파로 측정된 변수와 심근 분획 혈류 예비력과의 상관 관계 혈관내 초음파는 관상동맥 죽상 경화반 (atheromatous plaque)의 형상 평가, 혈관 내경 및 병변 길이등 형태학적 특성을 평가할 수 있는 좋은 검사법으로 관상동맥 중재 시술 시 많은 도움을 주고 있으나, 심근 허혈을 직접적으로 평가할 수는 없는 검사이다. 심근분획 혈류 ...
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Clinical and Physiological Outcomes of Fractional Flow Reserve-Guided Percutaneous Coronary Intervention in Patients With Serial Stenoses Within One Coronary Artery
... Investigators. Fractional flow reserve versus angiography for guiding percutaneous coronary ...and flow velocity measurements in humans: feasibility, reproducibility, and hemodynamic ...
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Coronary Computed Tomography Angiography-Derived Fractional Flow Reserve in Patients with Anomalous Origin of the Right Coronary Artery from the Left Coronary Sinus
... Conclusion: Take-off level, intramural course, and slit-like ostium were the main predictors of abnormal CT-FFR values. Importantly, patients with abnormal CT-FFR values showed a higher prevalence of typical angina and ...
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Validation of the diagnostic performance of 'HeartMedi V.1.0', a novel CT-derived fractional flow reserve measurement, for patients with coronary artery disease: a study protocol
... INTRODUCTION Fractional flow reserve (FFR) has become the standard of care for functional assess- ment of the extent and severity of coronary ...
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Integrated physiologic assessment of ischemic heart disease in real-world practice using index of microcirculatory resistance and fractional flow reserve: insights from the International Index of Microcirculatory Resistance Registry.
... Currently, FFR-guided decision-making for epicardial coro- nary stenosis has been a well-validated approach to avoid unnecessary stent implantation and to enhance patient clinical outcomes. 10–12 However, epicardial ...
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Long-Term Clinical Outcomes of Fractional Flow Reserve-Guided Versus Routine Drug-Eluting Stent Implantation in Patients With Intermediate Coronary Stenosis: Five-Year Clinical Outcomes of DEFER-DES Trial.
... Proper Fractional Flow Reserve Criteria for Intermediate Lesions in the Era of Drug-Eluting Stent (DEFER-DES) Trial was a prospective, randomized study conducted in 6 university hospitals in ...
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