For over sixty years, the QFR program has collected and published quarterly aggregate statistics on the financial results and position of U.S. corporations. Based upon a sample survey, the QFR presents estimated statements of income and retained earnings, balance sheets, and related financial and operating ratios.

5 days ago · Log in to begin reporting for the Quarterly Financial Report (QFR). If needed, you can save and complete your survey over multiple sessions. 2024 Quarter 4 (Internet reporting for this quarter will close on March 16, 2025 at 3:45 p.m., Eastern time.)

Quantitative flow ratio (QFR) is a novel angiography-based method for deriving fractional flow reserve (FFR) without pressure wire or induction of hyperemia. The accuracy of QFR when assessed online in the catheterization laboratory has not been adequately examined to date.

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6 days ago · The letters PDF or the icon indicate a document is in the Portable Document Format (PDF).To view the file you will need the Adobe® Reader, which is available for free from the Adobe web site.

Mar 19, 2018 · Quantitative flow ratio (QFR) is a novel diagnostic modality for functional testing of coronary artery stenosis without the use of pressure wires and induction of hyperemia. QFR is based on computation of standard invasive coronary angiographic imaging.

相比于狭窄度，FFR、QFR、FFRCT能够更准确的反映血管狭窄对心脏功能影响的严重程度，为医生决定是否要进行血管支架手术，提供更可靠的决策依据。 其次，三者的差别在于，FFR检查需要注射血管扩张药物，并使用额外的导丝，因此风险和费用都相对较高；而QFR则只需要 冠脉造影图像 （XA）就可以进行计算，不需要注射药物，也不需要额外导丝，因此风险和费用都显著降 …