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Frequency scouting for cardiac imaging with SSFP at 3 Tesla

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Abstract

Steady-state free precision techniques are often used in cine cardiac MRI, but are highly susceptible to off-resonance artifacts. In this article, we review the types and prevalence of off-resonance artifacts in the left ventricle on a 3 T MR scanner and describe the implementation of a technique to mitigate these artifacts. A group of 16 healthy children underwent SSFP cine imaging in the short axis. The synthesizer frequency was adjusted after scouting for the optimal frequency in a series of SSFP images with different frequency shifts. A total of 136 short-axis slices were examined for artifacts after the frequency adjustment. A significant number of slices in the apex region contained dark bands, flow artifacts and/or bright out-of-plane coherent artifacts. However, only five slices (3.6%) had artifacts that were detrimental to the accurate detection of myocardial boundaries. This technique offers a fast and easy way to suppress off-resonance artifacts in SSFP imaging at 3 T.

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Authors and Affiliations

  1. Department of Radiology, Cincinnati Children’s Hospital Medical Center, 3333 Burnet Ave., Cincinnati, OH, 45229, USA

    Janaka Wansapura, Robert Fleck & Eric Crotty

  2. Imaging Research Center, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA

    Janaka Wansapura

  3. Department of Cardiology, Cincinnati Children’s Hospital Medical Center, Cincinnati, OH, USA

    William Gottliebson

Authors
  1. Janaka Wansapura
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  2. Robert Fleck
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  3. Eric Crotty
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  4. William Gottliebson
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Correspondence to Janaka Wansapura.

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Wansapura, J., Fleck, R., Crotty, E. et al. Frequency scouting for cardiac imaging with SSFP at 3 Tesla. Pediatr Radiol 36, 1082–1085 (2006). https://doi.org/10.1007/s00247-006-0255-6

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  • DOI: https://doi.org/10.1007/s00247-006-0255-6

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