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1 FFR computed tomography (CT) derived (FFR(CT)) has shown
2 FFR derived from routine coronary angiography (FFR(angio
3 FFR measurements were performed with a microcatheter +/-
4 FFR pullback and conventional FFR(CT) significantly unde
5 FFR SEARCH (Stent Evaluated at Rotterdam Cardiology Hosp
6 FFR was measured in vessels with coronary lesions of var
7 FFR(angio) has the promise to substantially increase phy
8 FFR(angio) measured from the coronary angiogram alone ha
9 FFR(angio) values correlated well with FFR measurements
10 FFR(CT) also outperformed PET on a per-vessel basis (AUC
11 FFR(CT) showed a diagnostic accuracy, sensitivity, and s
12 FFR(CT) values were retrospectively derived from the cor
13 FFR(CT) was available for 1030 lesions (mean FFR(CT) val
14 FFR(INV) profiles were developed by plotting FFR(INV) va
15 FFR(INV) recordings were obtained prospectively during m
16 FFR(INV) values from the terminal vessel may overestimat
17 FFR(INV)<=0.8 was considered positive for lesion-specifi
18 FFR-guided heart rate settings had no adverse effect on
24 dels to determine the association between an FFR-guided revascularization strategy and all-cause mort
27 ular MRI-based strategy is noninferior to an FFR-based strategy with respect to major adverse cardiac
28 scularization strategy was noninferior to an FFR-guided revascularization strategy with respect to th
31 in whom 3-vessel FFR(CT) could be analyzed, FFR(CT) holds clinical potential to provide anatomic and
34 ent, outlining developments for both iFR and FFR in new clinical domains beyond the confines of stabl
37 R derived from routine coronary angiography (FFR(angio)) eliminates both of these requirements and di
42 ysis, there was positive correlation between FFR and CT-FFR (Pearson correlation coefficient, R=0.64,
43 We also demonstrate a dissociation between FFR-related cortical activity from that related to the l
44 tion, in diabetics, the relationship between FFR and angiographic indices was particularly weak (C st
46 ovided coronary CTA images were evaluable by FFR(CT), whereas PET had a favorable performance in per-
47 hest per-patient and -vessel AUC followed by FFR(CT) (0.86 vs. 0.83; p = 0.157; and 0.90 vs. 0.79; p
49 ique (disengagement of the guiding catheter, FFR(INV) pullback) is required to avoid erroneous FFR(IN
50 FFR</=0.80; DS>/=50%), negative concordance (FFR>0.80; DS<50%), positive mismatch (FFR</=0.80; DS<50%
51 to FFR and %DS values: positive concordance (FFR</=0.80; DS>/=50%), negative concordance (FFR>0.80; D
54 ve coronary CT angiography with conventional FFR(CT)-derived post hoc for each vessel and stenosis (F
63 y tree and heart contours, calculation of CT FFR values, and color coding of the coronary tree accord
66 ce or absence of significant disease with CT FFR (55%) than with coronary triple-rule-out CT angiogra
69 was positive correlation between FFR and CT-FFR (Pearson correlation coefficient, R=0.64, P<0.0001).
73 ceiver-operating characteristic curve for CT-FFR was 0.83 (0.72-0.93, P<0.0001), which was higher tha
74 ation for future research into the use of CT-FFR for coronary evaluation pre-aortic valve replacement
76 suggests that the diagnostic accuracy of CT-FFR in this cohort potentially enables its use in clinic
78 mography-derived fractional flow reserve (CT-FFR) is a clinically used modality for assessing coronar
80 puted tomography angiography (CTA) datasets (FFR(CT)) has emerged as a promising noninvasive test to
85 (with GC engaged [FFR(eng)] and disengaged [FFR(dis)]) in 202 intermediate stenoses of 173 patients.
86 ignificantly changed after GC disengagement: FFR(eng) 0.84+/-0.08 versus FFR(dis) 0.80+/-0.09, P<0.00
89 ty); (2) whether the extent of DeltaFFR(eng)-FFR(dis) could be clinically significant and therefore a
90 cision-making; and (3) whether DeltaFFR(eng)-FFR(dis) related to the stenosis location, that is, prox
92 with distal coronary segments (DeltaFFR(eng)-FFR(dis), proximal and middle 0.04+/-0.03 versus distal
93 ospectively measured twice (with GC engaged [FFR(eng)] and disengaged [FFR(dis)]) in 202 intermediate
97 patient, site-level, and procedural factors, FFR-guided revascularization was associated with a 43% l
98 FR(angio) Accuracy versus Standard FFR (FAST-FFR) study is a prospective, multicenter, international
99 ausing lesions was significantly greater for FFR(CT) (0.94 and 0.92) in comparison with coronary CTA
100 etimes spanning four orders of magnitude for FFR of spin-orbit excited molecular ions with merged bea
102 was 75.4 (95% CI, 23.4 to 127.5) seconds for FFR-guided rate-adaptive pacing and 3.1 (95% CI, -44.1 t
106 impede hyperemic flow, and therefore impact FFR measurements and related clinical decision-making.
109 ponse programming on the basis of individual FFR data and conventional age-guided rate-response progr
111 s were to evaluate the impact of integrating FFR on management decisions and on clinical outcome of p
112 th a post-percutaneous coronary intervention FFR <=0.85 as compared with those with an FFR >0.85.
113 th a post-percutaneous coronary intervention FFR <=0.85, mean post procedural FFR was 0.79+/-0.05.
114 hich post-percutaneous coronary intervention FFR was assessed in 1000 consecutive all-comer patients.
117 al stenoses in serial disease using invasive FFR pullback and the noninvasive equivalent, fractional
124 true FFR attributable to individual lesions (FFR(true)) was then measured following PCI of one of the
125 assessing the distal effect of all lesions, FFR(CT) correlated moderately well with invasive FFR ( R
127 od to quantify riverine connectivity and map FFRs, we provide a foundation for concerted global and n
136 dance (FFR>0.80; DS<50%), positive mismatch (FFR</=0.80; DS<50%), and negative mismatch (FFR>0.80; DS
140 and test the accuracy of a novel noninvasive FFR(CT)-derived percutaneous coronary intervention (PCI)
147 f an infarct-related artery, the addition of FFR-guided complete revascularization of non-infarct-rel
149 However, limited data exist on the effect of FFR on long-term clinical outcomes in patients with stab
150 ess is known about the prognostic effects of FFR measured directly after percutaneous coronary interv
151 ST-IT (Portuguese Study on the Evaluation of FFR-Guided Treatment of Coronary Disease), sharing a com
152 sent study sought to determine the impact of FFR(CT) on heart team's treatment decision-making and se
155 rve a hierarchy of grouping organizations of FFR, most notably many participants sequentially recalle
156 valuate contemporary, real-world patterns of FFR use and its effect on outcomes among unselected pati
157 as to evaluate the diagnostic performance of FFR(CT) and compare it with coronary CTA, single-photon
160 nt, there was significant underestimation of FFR(true) using FFR(pullback) (mean discrepancy, 0.06+/-
161 termine the association between the usage of FFR and all-cause mortality in patients with stable angi
162 opean and American guidelines for the use of FFR during PCI and shows that intracoronary pressure wir
163 giographically intermediate stenoses, use of FFR has slowly risen, and was associated with significan
164 In this observational study, the use of FFR was associated with a lower risk of long-term mortal
165 However, despite the relative ease of use of FFR, multiple technical factors can impair its accuracy,
166 Two separate cohorts were created based on FFR thresholds (<=0.80 as ischemic and >0.80 as nonische
173 ents (11%) had >=1 lesion(s) with a post-PCI FFR <=0.80 with post-PCI FFR <=0.80 in 78 lesions (9.8%)
174 ents (56%) had >=1 lesion(s) with a post-PCI FFR <=0.90, and 73 patients (11%) had >=1 lesion(s) with
176 no significant relationship between post-PCI FFR and the clinical end point at 30-day follow-up ( P=0
177 accumulated evidence suggests that post-PCI FFR be incorporated into routine practice in those patie
180 We investigated the potential of post-PCI FFR measurements to predict clinical outcome in patients
183 omized trials have established that post-PCI FFR value is independently predictive of long-term outco
184 aims of this study were to evaluate post-PCI FFR values, identify predictors for a low post-PCI FFR,
189 rovides evidence for improvement in post-PCI FFR with subsequent interventions (functional optimizati
190 lues, identify predictors for a low post-PCI FFR, and to investigate whether a relationship between p
195 FFR(INV) profiles were developed by plotting FFR(INV) values (y-axis) and site of measurement (x-axis
198 haring a common design, were pooled as PRIME-FFR (Insights From the POST-IT and R3F Integrated Multic
201 wever, the rationale for low post procedural FFR values remains often elusive based on angiographic f
203 The predictive accuracy of FFR(pullback), FFR(CT), and the novel technique (FFR(CT-P)) was then as
204 re participants perform 'final free recall' (FFR) of several random lists of words each of which was
205 With conventional angiography as reference, FFR(CT) assessment resulted in reclassification of 14% o
206 th Guiding Catheter Disengagement) registry, FFR was prospectively measured twice (with GC engaged [F
208 t from the intrinsic variability of repeated FFR measurements (test-retest repeatability); (2) whethe
209 performing invasive fractional flow reserve (FFR(INV)) by minimizing pressure distortions and identif
212 ng; measurements of fractional flow reserve (FFR) and coronary flow reserve (CFR) and the index of mi
222 linical outcomes of fractional flow reserve (FFR) measurement in patients with stable ischemic heart
224 wire measurement of fractional flow reserve (FFR) provides decision-making guidance during percutaneo
229 tomography-derived fractional flow reserve (FFR-CT) is a novel, noninvasive test for myocardial isch
230 ling gives rise to Fano-Feshbach resonances (FFR) that have become key to understanding and controlli
232 The auditory frequency-following response (FFR) is a non-invasive index of the fidelity of sound en
236 and specificity of the dichotomously scored FFR(angio) for predicting pressure wire-derived FFR usin
237 The FFR(angio) Accuracy versus Standard FFR (FAST-FFR) study is a prospective, multicenter, inte
244 incidence of coronary revascularization than FFR and was noninferior to FFR with respect to major adv
245 al optimization) challenging the notion that FFR after angiographic optimization is fixed because of
251 eviously believed, and we illustrate how the FFR to complex sounds can enhance the wider field of aud
252 ent evidence suggesting that, in humans, the FFR arises from multiple cortical and subcortical source
253 he iFR group and in 61 of 1007 (6.1%) in the FFR group (difference in event rates, 0.7 percentage poi
254 I group and 16 of 430 patients (3.7%) in the FFR group (risk difference, -0.2 percentage points; 95%
256 group and 213 of 464 patients (45.9%) in the FFR group met criteria to recommend revascularization (P
257 in the cardiovascular-MRI group than in the FFR group underwent index revascularization (162 [35.7%]
260 and cerebrovascular events was higher in the FFR-guided PCI versus the CABG group (44.5% versus 31.9%
261 only to study basic auditory processes, the FFR is an uncommonly multifaceted response yielding a we
263 meaningful diagnostic discordance, with the FFR from the pressure wire >0.80 and that from the micro
264 up of 4.7 years (range 0 to 11.2 years), the FFR group had lower adjusted risk estimates for all-caus
266 We demonstrate a dissociation between this FFR-f0-sensitive response in the right and an area in le
267 oses were divided into 4 groups according to FFR and %DS values: positive concordance (FFR</=0.80; DS
269 nt projections, on-site operators blinded to FFR then calculated FFR(angio) using proprietary softwar
273 s coronary intervention (PCI) planning tool (FFR(CT-P)) in predicting the true significance of indivi
275 anner tool more accurately predicts the true FFR contribution of each stenosis in serial coronary art
276 Forty-two patients (68 vessels) underwent FFR and CTA; 39 patients (92.3%) and 60 vessels (88.2%)
279 e, a noninvasive physiology assessment using FFR(CT) changed heart team's treatment decision-making a
280 gnificant underestimation of FFR(true) using FFR(pullback) (mean discrepancy, 0.06+/-0.05; P<0.001, r
284 nary artery disease undergoing single-vessel FFR assessment (excluding ST-segment elevation myocardia
285 y artery disease who underwent single-vessel FFR measurement in routine clinical practice, performing
288 Hospital) is a prospective registry in which FFR measurements were performed after PCI in 1000 consec
290 determine the proportion of patients in whom FFR(CT) changed the treatment decision and planning.
291 Particularly, in 38 stenoses (19%) with FFR values in the 0.81 to 0.85 range, GC disengagement w
294 tive coronary angiography when compared with FFR and evaluate the influence of risk factors (RF) on t
295 lar and cerebrovascular events compared with FFR-guided PCI, driven by a higher rate of repeat revasc
298 eat revascularization was more frequent with FFR-guided PCI (24.9% versus 8.2%; hazard ratio, 3.51 [9
300 all patients undergoing PCI (with or without FFR guidance) for stable angina pectoris in Sweden betwe