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Baseline correction does not improve flow quantification in phase-contrast velocity measurement for routine clinical
Christian Meierhofer1, Christine Lyko1, Eike Philipp Schneider1
1Department of Pediatric Cardiology and Congenital Heart Disease, Deutsches Herzzentrum München, Technische Universität München (TUM), Munich, Germany.
Clinical Imaging
|February 10, 2015
Summary
Baseline correction using a stationary gel phantom did not improve cardiovascular magnetic resonance (CMR) flow measurements and incorrectly suggested shunts in patients without them.
Area of Science:
- Cardiovascular Imaging
- Medical Physics
- Biomedical Engineering
Background:
- Phase-contrast cardiovascular magnetic resonance (CMR) flow measurements can be affected by velocity offset errors.
- Stationary gel phantoms are proposed as a method to correct these offset errors.
Purpose of the Study:
- To evaluate the impact of baseline correction using a stationary gel phantom on flow measurement accuracy in CMR.
- To assess the effect of this correction method on shunt calculation in patients without congenital heart disease shunts.
Main Methods:
- Flow measurements were performed in 24 patients with congenital heart disease.
- Baseline correction was applied using data from a stationary gel phantom.
Main Results:
- Baseline correction led to a significant increase in incorrectly calculated shunts in patients who did not have any.
- The method did not improve the accuracy of flow measurements.
Conclusions:
- Baseline correction with a stationary gel phantom is not clinically relevant for routine CMR.
- This method does not enhance the reliability of cardiovascular flow measurements or shunt detection.
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