HIGH RESOLUTION ECHO PLANAR IMAGING OF HUMAN BRAIN AT 4 TESLA

  • Jack, Clifford R Jr. (PI)
  • Hwang, T.- (PI)
  • Ellermann, J.M. (PI)
  • Kadah, Y. (PI)
  • Terpstra, M. (PI)
  • Ronen, I. (PI)
  • He, S. (PI)
  • Warren, W.S. (PI)
  • Vaughan, J. Thomas (PI)
  • Choi, I.- (PI)
  • Chen, W.E.I. (PI)
  • Lei, H.A.O. (PI)
  • Harel, Noam Y. (PI)
  • Ferris, C. (PI)
  • Carey, James R. (PI)
  • Cunningham, C. (PI)
  • Kayser, C. (PI)
  • Seaquist, Elizabeth R. (PI)
  • Georgieff, Michael K. (PI)
  • Terpstra, Melissa J. (PI)
  • He, B.I.N. (PI)
  • Mitsumori, L.E.E. (PI)
  • Engel, Stephen A. (PI)
  • Sponheim, Scott R. (PI)
  • [No Value], Kelvin O. (PI)
  • Ellermann, J.M. (PI)
  • Hylton-Watson, Nola M. (PI)
  • Chen, W.E.I. (PI)
  • Downs, Levi S. (PI)
  • Olman, Cheryl A. (PI)
  • Ogawa, Seiji (PI)
  • Phelps, Elizabeth (PI)
  • Merkle, Hellmut (PI)
  • Weisdorf, Sally (PI)
  • Rottenberg, David (PI)
  • Ebner, Timothy (PI)
  • Garwood, Michael (PI)
  • Vaughan, J. Thomas (PI)
  • Kim, Seong- (PI)
  • Bellugi, Ursula (PI)
  • Seaquist, Elizabeth (PI)
  • Chen, Wei William (PI)
  • Hu, Xiaoping (PI)
  • Gruetter, Rolf (PI)
  • Georgopolous, Apostolos (PI)
  • Ugurbil, Kamil (PI)
  • Ogawa, Seiji (PI)
  • Phelps, Elizabeth (PI)
  • Merkle, Hellmut (PI)
  • Ross, Brian David (PI)
  • Ebner, Timothy (PI)
  • Garwood, Michael (PI)
  • Vaughan, J. Thomas (PI)
  • Strick, Peter (PI)
  • Kim, Seong- (PI)
  • Seaquist, Elizabeth (PI)
  • Chen, Wei William (PI)
  • Hu, Xiaoping (PI)
  • Georgopolous, Apostolos (PI)
  • Ugurbil, Kamil (PI)
  • Mitra, Partha Pratim (PI)
  • Ashe, James (PI)
  • Georgopoulos, Apostolos (PI)
  • Llinas, Rodolfo (PI)
  • Xiao-Hong, Zhu (PI)
  • Hwang, T.- (PI)
  • Dassonville, Paul (PI)
  • Tsekos, Nikos (PI)
  • Ellermann, J.M. (PI)
  • Kadah, Y. (PI)
  • Terpstra, M. (PI)
  • Ronen, I. (PI)
  • He, S. (PI)
  • Warren, W.S. (PI)
  • Mitra, Partha Pratim (PI)
  • Ross, Brian David (PI)
  • Ebner, Timothy (PI)
  • Garwood, Michael (PI)
  • Vaughan, J. Thomas (PI)
  • Strick, Peter (PI)
  • Ashe, James (PI)
  • Kim, Seong- (PI)
  • Georgopoulos, Apostolos (PI)
  • Llinas, Rodolfo (PI)
  • Bellugi, Ursula (PI)
  • Xiao-Hong, Zhu (PI)
  • Dae-Shik, Kim (PI)
  • Galuske, Ralf (PI)
  • Tsekos, Nikos (PI)
  • Grohn, Ollie (PI)
  • van De Moortele, Pierre-Francois (PI)
  • Choi, I.- (PI)
  • Chen, W.E.I. (PI)
  • Logothetis, Nikos (PI)
  • Lei, H.A.O. (PI)
  • Vaughan, John (PI)
  • Gruetter, Rolf (PI)
  • Ashe, James (PI)
  • Pfeuffer, Josef (PI)
  • Shmuel, Amir (PI)
  • Goebel, Reiner (PI)
  • Kim, Seong- (PI)
  • Wang, Jinghua (PI)
  • Lee, Sang (PI)
  • Harel, Noam Y. (PI)
  • Michaeli, Shalom (PI)
  • Duong, Timothy (PI)
  • Ferris, C. (PI)
  • Yang, Qing (PI)
  • Ronen, Itamar (PI)
  • Cohen, Eric (PI)
  • Cunningham, C. (PI)
  • Kayser, C. (PI)
  • Marjanska, Malgorzata (PI)
  • Shapiro, Elsa (PI)
  • Lehericy, Stephane (PI)
  • Wiesinger, Florian (PI)
  • Koeneman, Kenneth (PI)
  • Sullivan, Jan Greer Greer (PI)
  • Dae-Shik, Kim (PI)
  • Joseph, Lee (PI)
  • Sorce, Dennis (PI)
  • Adriany, Gregor (PI)
  • Im, Chung-Soon (PI)
  • Guruajan, Arvind (PI)
  • Ashe, James (PI)
  • Shmuel, Amir (PI)
  • Jerde, Trenton (PI)
  • Rottenberg, David (PI)
  • Carey, James R. (PI)
  • Garwood, Michael (PI)
  • Collins, Christopher (PI)
  • Yacoub, Essa (PI)
  • Seaquist, Elizabeth R. (PI)
  • Georgieff, Michael K. (PI)
  • Kim, Seong- (PI)
  • Radhakrishna, Rao (PI)
  • Posse, Stefan (PI)
  • Mangia, Silvia (PI)
  • Terpstra, Melissa J. (PI)
  • Gulin, Oz (PI)
  • Michaeli, Shalom (PI)
  • Metzger, Gregory John (PI)
  • Vuchetich, John (PI)
  • Rusticihini, Aldo (PI)
  • Giove, Thomas (PI)
  • Landi, Nicole (PI)
  • Douglas, Yee (PI)
  • Sapiro, Guillermo (PI)
  • He, B.I.N. (PI)
  • Henry, Pierre Gilles (PI)
  • Idiyatullin, Djaudat (PI)
  • Mitsumori, L.E.E. (PI)
  • Engel, Stephen A. (PI)
  • Chow, Lisa (PI)
  • Sponheim, Scott R. (PI)
  • Malone, Stephen Matthew (PI)
  • Henry, Thomas Reid (PI)
  • Thompson, Paul (PI)
  • Papas, Klearchos (PI)
  • [No Value], Kelvin O. (PI)
  • Ellermann, J.M. (PI)
  • MacDonald, Angus (PI)
  • Ebner, Timothy (PI)
  • Hylton-Watson, Nola M. (PI)
  • Bolan, Patrick John (PI)
  • van De Moortele, Pierre-Francois (PI)
  • Thomas, Kathleen (PI)
  • Chen, W.E.I. (PI)
  • Luciana, Monica (PI)
  • Gopinath, Kaundinya Srinivasan (PI)
  • Erdman, Arthur (PI)
  • Downs, Levi S. (PI)
  • Feinberg, David Alan (PI)
  • Vaughan, John (PI)
  • Cullen, Kathryn Regan (PI)
  • Dubinsky, Janet (PI)
  • Specker, Sheila Mary (PI)
  • Kimberley, Teresa Jacobson (PI)
  • Kauppinen, Risto (PI)
  • Harel, Noam (PI)
  • Iltis, Isabelle Valentine (PI)
  • De Martino, Federico (PI)
  • Olman, Cheryl A. (PI)
  • Georgieff, Michael K. (PI)

Project: Research project

Project Details

Description

Echo-planar imaging (EPI) is sensitive to magnetic field
inhomogeneities which lead to signal loss and geometric distortions of
the image. The magnetic field inhomogeneities induced due to
susceptibility differences, as encountered in the human body, increase
with the magnetic field strength. Thus, it is a challenge to
implement high resolution EPI techniques on high magnetic field
systems. Furthermore, in EPI images, each k-space line has different
dephasing in the phase-encoding direction if flow is present, causing
artifacts in the phase-encoding direction. In order to have high
spatial and temporal resolution and minimize flow artifacts, a new
multi-shot, fast, high resolution EPI method has been developed which
utilizes variable flip angles, center-out k-space sampling, and
navigator echoes. In our segmentation scheme with variable flip
angles, the SNR is maximized since the k-space is sampled always from
the center. Consequently, this technique is well-suited for the
functional activation studies which require high temporal and spatial
resolution. Since the center k-space line is sampled first with
little flow contribution, flow artifacts are greatly reduced. The
navigator echoes can be utilized to monitor physiological motion and
correct such motion effects; this feature will be especially useful
when many segments and a long data acquisition time are employed.
sing a short effective echo time, resulting in a high SNR.
StatusFinished
Effective start/end date6/1/935/31/13

ASJC

  • Medicine(all)

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