Bruce Daniel

Publication Details

  • Double Half RF Pulses for Reduced Sensitivity to Eddy Currents in UTE Imaging MAGNETIC RESONANCE IN MEDICINE Josan, S., Pauly, J. M., Daniel, B. L., Pauly, K. B. 2009; 61 (5): 1083-1089

    Abstract:

    Ultrashort echo time imaging with half RF pulse excitation is challenging as eddy currents induced by the slice-select gradient distort the half pulse slice profile. This work presents two pulses with T(2)-dependent slice profiles that are less sensitive to eddy currents. The double half pulse improves the slice selectivity for long T(2) components, while the inverted double half pulse suppresses the unwanted long T(2) signal. Thus, both approaches prevent imperfect cancellation of out-of-slice signal from contaminating the desired slice. Experimental results demonstrate substantially improved slice selectivity and R(2)* quantitation accuracy with these pulses. These pulses are effective in making short T(2) imaging and quantitation less sensitive to eddy currents and provide an alternative to time-consuming gradient characterization.

    View details for DOI 10.1002/mrm.21879

    View details for Web of Science ID 000265566000010

    View details for PubMedID 19235919

Stanford Medicine Resources:

Footer Links: