Abstract
In conventional multi-shot IR-TFE sequences, e.g., clinical myocardial viability imaging, data collected during the first one or two shots is ignored, to minimize signal intensity variation across the shots. For a typical 8-10 heartbeat acquisition, such dummy shots results in scan overhead of 10-15% longer scan time. We evaluate the effect of removing the start-up shots in such IR-TFE sequences, and minimizing the effect of resulting artifacts
Highlights
In conventional multi-shot IR-TFE sequences, e.g., clinical myocardial viability imaging, data collected during the first one or two shots is ignored, to minimize signal intensity variation across the shots
We evaluate the effect of removing the start-up shots in such IR-TFE sequences, and minimizing the effect of resulting artifacts
Pulses, the apparent T1 of the tissue to be nulled is calculated for the given heart rate
Summary
In conventional multi-shot IR-TFE sequences, e.g., clinical myocardial viability imaging, data collected during the first one or two shots is ignored, to minimize signal intensity variation across the shots. We evaluate the effect of removing the start-up shots in such IR-TFE sequences, and minimizing the effect of resulting artifacts. Purpose The purposes of this work are two fold: (a) to theoretically analyze and experimentally evaluate the impact of removing the startup shot in a conventional cardiac viability sequence, and (b) evaluate potential mechanisms for minimizing the artifacts stemming from the removal of start-up shots. Pulses, the apparent T1 of the tissue to be nulled is calculated for the given heart rate. Based on this T1, an inversion flip angle which would yield nulling at the desired Td for the first shot [Fig 1]. Scanning was performed in a 1.5 T Achieva scanner (Philips Healthcare)
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
