Abstract #3846
Validation of high temporal resolution spiral phase velocity mapping of coronary artery blood flow against Doppler Flowire
Jennifer Keegan 1 , Claire E Raphael 1 , Robin Simpson 1 , Kim Parker 2 , Peter Drivas 3 , Ranil de Silva 4 , Carlo Di Mario 4 , Sanjay Prasad 3 , and David Firmin 3,5
1
Cardiovascular Biomedical Research Unit,
Royal Brompton Hospital, London, United Kingdom,
2
Imperial
College, London, United Kingdom,
3
Cardiovascular
Biomedical Research Unit, Royal Brompton Hospital,
United Kingdom,
4
Cardiology,
Royal Brompton Hospital, United Kingdom,
5
Imperial
College London, United Kingdom
The temporal pattern of coronary flow velocity through
the cardiac cycle provides important information about
coronary haemodynamics and atherosclerotic disease
state. In this study, we compare breath-hold high
temporal resolution (19ms) spiral phase velocity mapping
of proximal left and right coronary blood flow velocity
with invasive gold-standard Doppler Flowire measurements
in a small group of patients. As expected, MR velocities
are lower than Doppler velocities (by 47% on average)
but the temporal flow patterns are similar (R2 = .47 -
.91). We conclude that spiral phase velocity mapping has
the potential to assess temporal patterns of coronary
flow velocity non-invasively.
How to access this content:
For one year after publication, abstracts and videos are only open to registrants of this annual meeting. Registrants should use their existing login information. Non-registrant access can be purchased via the ISMRM E-Library.
After one year, current ISMRM & ISMRT members get free access to both the abstracts and videos. Non-members and non-registrants must purchase access via the ISMRM E-Library.
After two years, the meeting proceedings (abstracts) are opened to the public and require no login information. Videos remain behind password for access by members, registrants and E-Library customers.
Click here for more information on becoming a member.
