Quantitative Evaluation of Peripheral Arterial Blood Flow Using Peri-Interventional Fluoroscopic Parameters: An In Vivo Study Evaluating Feasibility and Clinical Utility

Table 4

TTP data before and after intervention for ROIs 1 to 4.

ROI	TTP: preintervention (s)	TTP: postintervention (s)	Significance of change ( value)	Correlation coefficient (rho)	Significance of correlation ( value)
I	1.26 (±0.75)	0.82 (±0.41)	0.280	−0.260	0.268
II	1.32 (±0.77)	1.11 (±0.53)	0.631	−0.121	0.610
III	2.07 (±0.78)	1.40 (±0.58)	0.063	−0.434	0.056
IV	2.43 (±0.88)	1.45 (±0.48)	0.009	−0.590	0.006

The arithmetic mean plus/minus standard deviation and values demonstrating the significance of pre- to postinterventional changes are listed. Spearman rank correlation coefficients (rho) and corresponding values demonstrating the significance of correlations in changes across all 10 patients at each ROI are also listed. values are calculated based on changes at each specific ROI and do not compare differing ROIs to one another. Significant values are marked with an asterisk.