Yongxian Qian

Summary

Affiliation: University of Pittsburgh
Country: USA

Publications

  1. pmc Repeatability of ultrashort echo time-based two-component T2* measurements on cartilages in human knee at 3 T
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    Magn Reson Med 69:1564-72. 2013
  2. doi request reprint Sodium imaging of human brain at 7 T with 15-channel array coil
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    Magn Reson Med 68:1807-14. 2012
  3. pmc High-resolution sodium imaging of human brain at 7 T
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
    Magn Reson Med 68:227-33. 2012
  4. doi request reprint High-resolution ultrashort echo time (UTE) imaging on human knee with AWSOS sequence at 3.0 T
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    J Magn Reson Imaging 35:204-10. 2012
  5. pmc Multicomponent T2* mapping of knee cartilage: technical feasibility ex vivo
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
    Magn Reson Med 64:1426-31. 2010
  6. doi request reprint High-resolution spiral imaging on a whole-body 7T scanner with minimized image blurring
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    Magn Reson Med 63:543-52. 2010
  7. doi request reprint Parallel imaging with 3D TPI trajectory: SNR and acceleration benefits
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, PA 15213, USA
    Magn Reson Imaging 27:656-63. 2009
  8. pmc Improved large tip angle parallel transmission pulse design through a perturbation analysis of the Bloch equation
    Hai Zheng
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
    Magn Reson Med 66:687-96. 2011
  9. pmc Multi-slice parallel transmission three-dimensional tailored RF (PTX 3DTRF) pulse design for signal recovery in ultra high field functional MRI
    Hai Zheng
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
    J Magn Reson 228:37-44. 2013
  10. ncbi request reprint Decomposed direct matrix inversion for fast non-cartesian SENSE reconstructions
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    Magn Reson Med 56:356-63. 2006

Collaborators

Detail Information

Publications16

  1. pmc Repeatability of ultrashort echo time-based two-component T2* measurements on cartilages in human knee at 3 T
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    Magn Reson Med 69:1564-72. 2013
    ..005). These CV values suggest that in vivo measurement of two-component T2* relaxation in the knee cartilages is repeatable on clinical scanner at 3 T, with a signal-to-noise ratio of 90...
  2. doi request reprint Sodium imaging of human brain at 7 T with 15-channel array coil
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    Magn Reson Med 68:1807-14. 2012
    ..The 15-channel array coil is an efficient tool to substantially improve SNR in sodium imaging on human brain...
  3. pmc High-resolution sodium imaging of human brain at 7 T
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
    Magn Reson Med 68:227-33. 2012
    ..44 mm (measured resolution 5.5 mm) due to the improvement of in-plane resolution...
  4. doi request reprint High-resolution ultrashort echo time (UTE) imaging on human knee with AWSOS sequence at 3.0 T
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    J Magn Reson Imaging 35:204-10. 2012
    ..To demonstrate the technical feasibility of high-resolution (0.28-0.14 mm) ultrashort echo time (UTE) imaging on human knee at 3T with the acquisition-weighted stack of spirals (AWSOS) sequence...
  5. pmc Multicomponent T2* mapping of knee cartilage: technical feasibility ex vivo
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
    Magn Reson Med 64:1426-31. 2010
    ..A map of decay types presented spatial distribution of these T2* decays. These results showed the technical feasibility of multicomponent T2* mapping on human knee cartilage explants...
  6. doi request reprint High-resolution spiral imaging on a whole-body 7T scanner with minimized image blurring
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    Magn Reson Med 63:543-52. 2010
    ..These images showed that spiral imaging at 7T was feasible...
  7. doi request reprint Parallel imaging with 3D TPI trajectory: SNR and acceleration benefits
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, PA 15213, USA
    Magn Reson Imaging 27:656-63. 2009
    ..The 3D nature of both TPI trajectory and coil sensitivities might be responsible for the high acceleration and low noise amplification. Consequently, TPI-SENSE may have potential advantages for parallel sodium imaging...
  8. pmc Improved large tip angle parallel transmission pulse design through a perturbation analysis of the Bloch equation
    Hai Zheng
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, Pennsylvania, USA
    Magn Reson Med 66:687-96. 2011
    ....
  9. pmc Multi-slice parallel transmission three-dimensional tailored RF (PTX 3DTRF) pulse design for signal recovery in ultra high field functional MRI
    Hai Zheng
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
    J Magn Reson 228:37-44. 2013
    ..Phantom and human experiments are used to demonstrate the effectiveness and robustness of the proposed method on three subjects using an eight-channel whole body parallel transmission system...
  10. ncbi request reprint Decomposed direct matrix inversion for fast non-cartesian SENSE reconstructions
    Yongxian Qian
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, Pennsylvania 15213, USA
    Magn Reson Med 56:356-63. 2006
    ..The DMI method may be useful for noise evaluations in parallel coil designs, dynamic MRI, and 3D sodium MRI with fixed coils and trajectories...
  11. ncbi request reprint Optimal coil array design: the two-coil case
    Pascal Spincemaille
    Department of Radiology, Weill Medical College of Cornell University, New York, NY 10022, USA
    Magn Reson Imaging 25:671-7. 2007
    ..For the infinite cylinder and the finite sphere, optimal solutions can be quite different from the "magical" overlap...
  12. pmc Parallel transmission RF pulse design for eddy current correction at ultra high field
    Hai Zheng
    Department of Bioengineering, University of Pittsburgh, Pittsburgh, PA, USA
    J Magn Reson 221:139-46. 2012
    ..Moreover, the proposed model-based correction method not only demonstrates comparable excitation patterns as the trajectory measurement method, but also significantly improves time efficiency...
  13. ncbi request reprint Self-calibrated spiral SENSE
    Yongxian Qian
    Department of Radiology, University of Pittsburgh, PA, USA
    Magn Reson Med 52:688-92. 2004
    ..The preliminary data indicate that self-calibrated SENSE is as accurate as standard SENSE, which uses a fully sampled reference scan...
  14. doi request reprint Acquisition-weighted stack of spirals for fast high-resolution three-dimensional ultra-short echo time MR imaging
    Yongxian Qian
    MR Research Center, Radiology, University of Pittsburgh, 200 Lothrop Street, Pittsburgh, PA 15213, USA
    Magn Reson Med 60:135-45. 2008
    ..Compared with long-TE (10 ms) images, the ultrashort-TE AWSOS images provided clear visualization of short-T(2) tissues such as the nose cartilage, the eye optic nerve, and the brain meninges and parenchyma...
  15. pmc Superparamagnetic iron oxide is suitable to label tendon stem cells and track them in vivo with MR imaging
    Yunfa Yang
    MechanoBiology Laboratory, Department of Orthopaedic Surgery, University of Pittsburgh School of Medicine, 210 Lothrop Street BST, E1640, Pittsburgh, PA 15213, USA
    Ann Biomed Eng 41:2109-19. 2013
    ..Taken together, the findings of this study show that labeling TSCs with SPIO particles is a feasible approach to track TSCs in vivo by MRI, which offers a non-invasive method to monitor repair of injured tendons. ..
  16. doi request reprint Sodium MRI and the assessment of irreversible tissue damage during hyper-acute stroke
    Fernando E Boada
    MR Research Center, Department of Radiology, University of Pittsburgh, Pittsburgh, PA, USA
    Transl Stroke Res 3:236-45. 2012
    ..An illustration of the salient features of the technique is also presented using a nonhuman primate model of reversible middle cerebral artery occlusion. ..