Work

Suppression of vascular enhancement artifacts through the use of a multiband, selectively spoiled radiofrequency excitation pulse

Year: 2011

Type: article

Abstract: PURPOSE: To test the ability of a multi-band RF pulse to reduce flow enhancement artifacts for steady state imaging without compromising temporal resolution or spatial coverage. MATERIALS AND METHODS: Selectively spoiled composite RF pulses that provide simultaneous excitation and flow preparation were designed and tested by means of simulation, phantom, and in vivo measurements under varying conditions of flow. RESULTS: Suppression of flow enhancement was found to depend on flow velocity and spatial extent of spoiled regions. By determining necessary pulse characteristics for a given experimental geometry, flow enhancement was reduced and sensitivity to T(1)-reducing contrast agent was dramatically increased. CONCLUSION: These pulses provide an effective means of suppressing flow enhancement without sacrificing temporal resolution or spatial coverage.

Source: Journal of Magnetic Resonance Imaging

DOI: 10.1002/jmri.22523

Authors: Dustin K. Ragan, James A. Bankson

Institutions: The University of Texas MD Anderson Cancer Center, The University of Texas at Austin

Language: English

Topic: Advanced MRI Techniques and Applications

Subfield: Radiology, Nuclear Medicine and Imaging

Field: Medicine

Domain: Health Sciences

SDG: Good health and well-being

Open Access status: bronze

Funders: National Institutes of Health, National Cancer Institute