Qfr là gì

Quantitative Flow Ratio (QFR) from Medis Medical Imaging offers a novel, safe1, non-invasive approach to lớn physiology designed lớn enhance procedural efficiency2, drive economic value* and improve the patient’s proceduralexperience**.

Medis QFR is being distributed by obatambeienwasirherbal.com Medical in North America only.


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Applicable pre, during, và post PCISupports predictable treatment with Residual QFR Reduces physiological assessment time by 29%2
No purchase of capital equipment requiredNo adenosine or pressure wire usedEfficient workflow both online & off
Arturo Cesaro, et al; Fractional assessment of coronary stenosis; An overview of available techniques. Is quantitative flow ratio a step khổng lồ the future? 2018 July 11.Westra J, Andersen BK, et al; Diagnostic performance of in-procedure angiography-derived Quantitative Flow Reserve compared khổng lồ pressure-derived Fractional Flow Reserve: The FAVOR II Europe-Japan Study. J Am Heart Assoc 2018.Data on file. 35-100018.Choi et al. Clinical relevance & prognostic implications of contrast quantitative flow ratio in patients with coronary artery disease. International Journal of Cardiology. Sept 2020.Emori H, Kubo T, Ket al; Quantitative flow ratio và instantaneous wave-free ratio for the assessment of the functional severity of intermediate coronary artery stenosis. Coronary Artery Disease 2018.

 

* Reduced side effect profile when compared to FFR with adenosine induced hyperemia

** Cost savings based on the reduced cost of QFR compared khổng lồ conventional FFR và the respective cost of administration of hyperemic agent (adenosine) và additional invasive proce dural resources


QAngio XA 3d is software intended khổng lồ be used for performing calculations in X-ray angiographic images of the coronary arteries. QAngio XA 3 chiều enables interventional cardiologists & researchers khổng lồ obtain quantifications of one or more lesions in the analyzed coronary vessel segment. In particular, QAngio XA 3d provides:
Quantitative results of coronary vessel segments based on a 3d reconstructed model; Dimensions of the cardiovascular vessels và lesions; Quantification of the pressure drop in coronary vessels.

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QAngio XA 3 chiều is indicated for use in clinical settings where validated and reproducible quantified results are needed to tư vấn the assessment of coronary vessels in X-ray angiographic images, for use on individual patients with coronary artery disease. When the quantified results provided by QAngio XA 3d are used in a clinical setting on X-ray images of an individual patient, the results are only intended for use by the responsible clinicians.
The two 2 chiều angiographic images used for the 3 chiều vessel reconstruction need to lớn be taken with at least 25 degrees difference in viewing angle.
QFR measurements have not been evaluated for non-coronary arteries, pediatric patients, and cardiac patients with the following conditions:
Tachycardia with frequency above 100 bpm Systolic aortic resting blood pressure below 75 mm Hg Atrial fibrillation Atrial fibrillation
Culprit lesions in Acute Coronary SyndromeBifurcation lesions with 1,1,1 Medina classification Aorto-ostial artery stenoses or ostial right coronary artery stenoses Distal Left Main lesions in combination with a proximal Circumflex lesion Vessels with retrograde fillings Bypass graftsGrafted coronary arteries Myocardial bridging
When no nitroglycerin has been administered either systemic nor intracoronary; Too much overlap of other vessels with the lesion or areas just around the lesion in the target vessel in one or both angiographic acquisitions; Too much foreshortening of the target coronary artery in one or both angiographic acquisitions.
QAngio XA 3d must be used by cardiologists or trained technicians who are qualified to perform cardiac analysis. If the analysis results are used khổng lồ reach a diagnosis, the results must be interpreted by a qualified medical professional. In clinical practice QAngio XA 3d should not be used for purposes other than those indicated in the section Intended Use.
Users must have sufficient proficiency in the selected operating language, read this manual, become familiar with the software, and must be certified by Medis before using QAngio XA 3d in a clinical environment in order lớn obtain reliable analysis results.
The shapes of objects and calipers displayed may get slightly distorted when the resolution is set lớn an aspect ratio different than the monitor’s physical aspect ratio. This distortion does NOT affect the accuracy of measurements or analyses. To lớn avoid distortion, mix the resolution of the monitor khổng lồ an aspect ratio equal to lớn the physical aspect ratio. LCD monitors typically operate best at their native resolution. Microsoft Windows recommends a resolution when it has sufficient information to do so.
QAngio XA 3d has been cleared for market in the United States by the FDA (Food và Drug Administration) under the provisions of Section 510(k) of the Food, Drug, & Cosmetic Act.