Key result
High temporal resolution breath-hold spiral phase velocity mapping accurately assessed temporal patterns of coronary blood flow, showing a strong linear relationship with invasive Doppler measurements for the ratio of peak diastolic to peak systolic velocity.
Why the study?
Does high temporal resolution spiral phase velocity mapping accurately assess temporal patterns of coronary blood flow compared to invasive Doppler guidewire?
Population
18 patients undergoing clinically indicated coronary angiography, including 14 with hypertrophic…
Comparison
Retrospectively-gated breath-hold spiral phase… vs Invasive Doppler guidewire study (Combowire)
Design
Cross-sectional
Authors
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May support non-invasive coronary flow research; leaves open clinical adoption pending prospective validation.
Observational (n=18)
Does high temporal resolution spiral phase velocity mapping accurately assess temporal patterns of coronary blood flow compared to invasive Doppler guidewire?
Effect estimate: R2 0.93 (RCA), 0.70 (LAD)
High temporal resolution breath-hold spiral phase velocity mapping by CMR accurately assesses temporal patterns of coronary blood flow, offering a non-invasive alternative to Doppler guidewire, though it underestimates absolute flow velocities.
Keegan et al. (2015) conducted an observational in Patients undergoing clinically indicated coronary angiography (n=18). High temporal resolution spiral phase velocity mapping (CMR) vs. Doppler guidewire was evaluated on Correlation of peak diastolic to peak systolic velocity ratio (PDV/PSV) between CMR and Doppler (R2 0.93 (RCA), 0.70 (LAD)). High temporal resolution breath-hold spiral phase velocity mapping accurately assessed temporal patterns of coronary blood flow, showing a strong linear relationship with invasive Doppler measurements for the ratio of peak diastolic to peak systolic velocity.
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