Duan Xu

Summary

Affiliation: University of California
Country: USA

Publications

  1. pmc MR spectroscopy of normative premature newborns
    Duan Xu
    Department of Radiology and Biomedical Imaging, University of San Francisco, California, USA
    J Magn Reson Imaging 33:306-11. 2011
  2. pmc Magnetic resonance spectroscopy imaging of the newborn brain--a technical review
    Duan Xu
    Department of Radiology and Biomedical Imaging, Joint UCSF UC Berkeley Graduate Group in Bioengineering, University of California, San Francisco, CA 94158, USA
    Semin Perinatol 34:20-7. 2010
  3. pmc Quantitative analysis of spatial distortions of diffusion techniques at 3T
    Duan Xu
    Department of Radiology and Biomedical Imaging, University of California San Francisco, CA, USA
    Magn Reson Imaging 28:451-4. 2010
  4. ncbi request reprint High-speed 3T MR spectroscopic imaging of prostate with flyback echo-planar encoding
    Albert P Chen
    Department of Radiology, University of California at San Francisco, San Francisco, CA 94143, USA
    J Magn Reson Imaging 25:1288-92. 2007
  5. ncbi request reprint 3D 1H MRSI of brain tumors at 3.0 Tesla using an eight-channel phased-array head coil
    Joseph A Osorio
    UCSF UCB Joint Graduate Group in Bioengineering, University of California San Francisco, San Francisco, California 94158 2532, USA
    J Magn Reson Imaging 26:23-30. 2007
  6. ncbi request reprint High-resolution 3D MR spectroscopic imaging of the prostate at 3 T with the MLEV-PRESS sequence
    Albert P Chen
    Department of Radiology, University of California at San Francisco, San Francisco, CA 94143 2512, USA
    Magn Reson Imaging 24:825-32. 2006
  7. doi request reprint GRAPPA-based susceptibility-weighted imaging of normal volunteers and patients with brain tumor at 7 T
    Janine M Lupo
    Department of Radiology, Surbeck Laboratory of Advanced Imaging, University of California, San Francisco, CA 94158 2532, USA
    Magn Reson Imaging 27:480-8. 2009
  8. pmc Flexible transceiver array for ultrahigh field human MR imaging
    Bing Wu
    Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
    Magn Reson Med 68:1332-8. 2012
  9. ncbi request reprint Design of flyback echo-planar readout gradients for magnetic resonance spectroscopic imaging
    Charles H Cunningham
    Department of Electrical Engineering, Stanford University, Stanford, California, USA
    Magn Reson Med 54:1286-9. 2005
  10. pmc 7T human spine imaging arrays with adjustable inductive decoupling
    Bing Wu
    Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA 94158, USA
    IEEE Trans Biomed Eng 57:397-403. 2010

Detail Information

Publications45

  1. pmc MR spectroscopy of normative premature newborns
    Duan Xu
    Department of Radiology and Biomedical Imaging, University of San Francisco, California, USA
    J Magn Reson Imaging 33:306-11. 2011
    ..To establish normative metabolite ratios throughout the newborn brain using three-dimensional (3D) MR spectroscopic imaging (MRSI)...
  2. pmc Magnetic resonance spectroscopy imaging of the newborn brain--a technical review
    Duan Xu
    Department of Radiology and Biomedical Imaging, Joint UCSF UC Berkeley Graduate Group in Bioengineering, University of California, San Francisco, CA 94158, USA
    Semin Perinatol 34:20-7. 2010
    ....
  3. pmc Quantitative analysis of spatial distortions of diffusion techniques at 3T
    Duan Xu
    Department of Radiology and Biomedical Imaging, University of California San Francisco, CA, USA
    Magn Reson Imaging 28:451-4. 2010
    ..These methods have confirmed the SSFSE based diffusion method is less distorted than the EPI based one, which is generally accepted through visual inspection...
  4. ncbi request reprint High-speed 3T MR spectroscopic imaging of prostate with flyback echo-planar encoding
    Albert P Chen
    Department of Radiology, University of California at San Francisco, San Francisco, CA 94143, USA
    J Magn Reson Imaging 25:1288-92. 2007
    ..The short acquisition time provided by this method reduces the 3T prostate MRI/MRSI exam time, allows longer repetition times, and/or allows the acquisition of additional MR acquisitions within the same exam...
  5. ncbi request reprint 3D 1H MRSI of brain tumors at 3.0 Tesla using an eight-channel phased-array head coil
    Joseph A Osorio
    UCSF UCB Joint Graduate Group in Bioengineering, University of California San Francisco, San Francisco, California 94158 2532, USA
    J Magn Reson Imaging 26:23-30. 2007
    ..To implement proton magnetic resonance spectroscopic imaging (1H MRSI) at 3 Tesla (3T) using an eight-channel phased-array head coil in a population of brain-tumor patients...
  6. ncbi request reprint High-resolution 3D MR spectroscopic imaging of the prostate at 3 T with the MLEV-PRESS sequence
    Albert P Chen
    Department of Radiology, University of California at San Francisco, San Francisco, CA 94143 2512, USA
    Magn Reson Imaging 24:825-32. 2006
    ..5 t mrsi...
  7. doi request reprint GRAPPA-based susceptibility-weighted imaging of normal volunteers and patients with brain tumor at 7 T
    Janine M Lupo
    Department of Radiology, Surbeck Laboratory of Advanced Imaging, University of California, San Francisco, CA 94158 2532, USA
    Magn Reson Imaging 27:480-8. 2009
    ..GRAPPA-based SWI at 7 T revealed regions of microvascularity, hemorrhage and calcification within heterogeneous brain tumors that may aid in characterizing active or necrotic tumor and monitoring treatment effects...
  8. pmc Flexible transceiver array for ultrahigh field human MR imaging
    Bing Wu
    Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California 94158, USA
    Magn Reson Med 68:1332-8. 2012
    ..Seven Tesla parallel imaging with generalized autocalibrating partially parallel acquisitions (GRAPPA) performed using this flexible transceiver array was also presented...
  9. ncbi request reprint Design of flyback echo-planar readout gradients for magnetic resonance spectroscopic imaging
    Charles H Cunningham
    Department of Electrical Engineering, Stanford University, Stanford, California, USA
    Magn Reson Med 54:1286-9. 2005
    ..3 min and 4096 voxels in 8.5 min). The trajectories were insensitive to errors in timing and require only a modest (10 to 30%) penalty in SNR relative to conventional phase encoding using the same acquisition time...
  10. pmc 7T human spine imaging arrays with adjustable inductive decoupling
    Bing Wu
    Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA 94158, USA
    IEEE Trans Biomed Eng 57:397-403. 2010
    ..Preliminary results of human spine images acquired using the transceiver arrays demonstrate the feasibility of the design for ultrahigh-field MR applications and its robust performance for parallel imaging...
  11. doi request reprint High-resolution intracranial MRA at 7T using autocalibrating parallel imaging: initial experience in vascular disease patients
    Cornelius Von Morze
    Department of Radiology, University of California, San Francisco, CA 94143 2512, USA
    Magn Reson Imaging 26:1329-33. 2008
    ..In this study, we applied parallel imaging to 7T TOF MRA studies of normal volunteers and patients with vascular disease, in order to obtain very high resolution (0.12 mm(3)) images within a reasonable scan time...
  12. pmc 3D sensitivity encoded ellipsoidal MR spectroscopic imaging of gliomas at 3T
    Esin Ozturk-Isik
    Margaret Hart Surbeck Laboratory of Advanced Imaging, Department of Radiology and Biomedical Imaging, University of California, San Francisco, CA 94158, USA
    Magn Reson Imaging 27:1249-57. 2009
    ..The goal of this study was to implement time efficient data acquisition and reconstruction methods for 3D magnetic resonance spectroscopic imaging (MRSI) of gliomas at a field strength of 3T using parallel imaging techniques...
  13. pmc A practical multinuclear transceiver volume coil for in vivo MRI/MRS at 7 T
    Chunsheng Wang
    Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA
    Magn Reson Imaging 30:78-84. 2012
    ..Finite difference time domain method simulations for evaluating the design and 7-T MR experiment results acquired using the prototype coil are presented...
  14. pmc Phased array 3D MR spectroscopic imaging of the brain at 7 T
    Duan Xu
    Joint UCSF UC Berkeley Graduate Group in Bioengineering, University of California, San Francisco and Berkeley, CA 94143, USA
    Magn Reson Imaging 26:1201-6. 2008
    ..The new 7 T MRSI sequence was tested in volunteer studies and demonstrated the feasibility of obtaining high-SNR phased-array 3D MRSI from the human brain...
  15. pmc High-resolution phased-array MRI of the human brain at 7 tesla: initial experience in multiple sclerosis patients
    Meredith Metcalf
    UCSF UC Berkeley Joint Graduate Group in Bioengineering, University of California, San Francisco and Berkeley, CA 94017, USA
    J Neuroimaging 20:141-7. 2010
    ..Clear involvement of the GM was observed with improved morphological detail in comparison to imaging at lower-field strength...
  16. doi request reprint Rapid in vivo musculoskeletal MR with parallel imaging at 7T
    Suchandrima Banerjee
    Radiology, University of California, San Francisco, San Francisco, California 94158, USA
    Magn Reson Med 59:655-60. 2008
    ..Robust quantification of bone and cartilage metrics could be derived from accelerated ankle and knee acquisitions. PI can enhance the clinical feasibility of in vivo bone and cartilage HR-MRI for osteoporosis and osteoarthritis at 7T...
  17. pmc Development of a robust method for generating 7.0 T multichannel phase images of the brain with application to normal volunteers and patients with neurological diseases
    Kathryn E Hammond
    University of California San Francisco Berkeley Joint Graduate Group in Bioengineering, San Francisco, CA 94158 2532, USA
    Neuroimage 39:1682-92. 2008
    ..5 T. The clinical images showed novel contrast in MS plaques and depicted microhemorrhages and abnormal vasculature in brain tumors with unsurpassed resolution and contrast...
  18. pmc Design of cosine modulated very selective suppression pulses for MR spectroscopic imaging at 3T
    Joseph A Osorio
    UCSF UCB Joint Graduate Group in Bioengineering, San Francisco, California 94158 2532, USA
    Magn Reson Med 61:533-40. 2009
    ..This provided improved coverage and suppression of unwanted lipid signals with a smaller number of pulses. The use of the improved pulse sequence was validated in volunteer studies, and in clinical 3D MRSI exams of brain tumors...
  19. pmc A DTI-based template-free cortical connectome study of brain maturation
    Olga Tymofiyeva
    Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, United States of America
    PLoS ONE 8:e63310. 2013
    ..We also explored how the equal area nodes can be grouped into modules without any prior anatomical information--an important step toward a fully network-driven registration and analysis of brain connectivity...
  20. ncbi request reprint In vivo bone and cartilage MRI using fully-balanced steady-state free-precession at 7 tesla
    Roland Krug
    Department of Radiology, University of California, San Francisco, San Francisco, California, USA
    Magn Reson Med 58:1294-8. 2007
    ..3) compared with 3T (21.3 +/- 3.3). Bone SNR increased from 11.8 +/- 2.0 to 13.2 +/- 2.5 at the higher field strength. We concluded that there is SNR benefit and great potential for bone and cartilage imaging at higher field strength...
  21. pmc A dual-tuned quadrature volume coil with mixed λ/2 and λ/4 microstrip resonators for multinuclear MRSI at 7 T
    Yong Pang
    Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158 2330, USA
    Magn Reson Imaging 30:290-8. 2012
    ..A preliminary proton image of a mouse on the sagittal plane is also acquired using the proposed dual-tuned volume coil at 7 T, illustrating a fairly uniform B(1) field and sufficient image coverage for imaging in mice...
  22. ncbi request reprint Sequence design for magnetic resonance spectroscopic imaging of prostate cancer at 3 T
    Charles H Cunningham
    Department of Electrical Engineering, Stanford University, California, USA
    Magn Reson Med 53:1033-9. 2005
    ..Studies in a human subject verified that this behavior is reproduced in vivo and demonstrated that the water and lipid suppression of the new pulse sequence are sufficient for application in prostate cancer patients...
  23. pmc Extreme premature birth is not associated with impaired development of brain microstructure
    Sonia L Bonifacio
    Department of Pediatrics, University of California, San Francisco, CA 94143 0748, USA
    J Pediatr 157:726-32.e1. 2010
    ..To assess whether birth at <26 weeks gestation is an important predictor of brain microstructure maturation as determined by using diffusion tensor imaging...
  24. ncbi request reprint Partially-parallel, susceptibility-weighted MR imaging of brain vasculature at 7 Tesla using sensitivity encoding and an autocalibrating parallel technique
    Janine M Lupo
    University of California San Francisco, CA, USA
    Conf Proc IEEE Eng Med Biol Soc 1:747-50. 2006
    ....
  25. pmc Reduced field-of-view diffusion-weighted imaging of the brain at 7 T
    Cornelius Von Morze
    Department of Radiology and Biomedical Imaging, University of California, San Francisco MC 2512, CA 94158 2512, USA
    Magn Reson Imaging 28:1541-5. 2010
    ..The new acquisition greatly reduced the level of artifacts in six human subjects (including four patients with early symptoms of dementia)...
  26. pmc Shielded microstrip array for 7T human MR imaging
    Bing Wu
    Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94158, USA
    IEEE Trans Med Imaging 29:179-84. 2010
    ..An experimental method was also introduced and utilized for quantitative measurement and evaluation of RF coil resonance stability or "cable resonance" behavior...
  27. ncbi request reprint Considerations in applying 3D PRESS H-1 brain MRSI with an eight-channel phased-array coil at 3 T
    Yan Li
    UCSF UCB Joint Graduate Group in Bioengineering, San Francisco, CA 94720, USA
    Magn Reson Imaging 24:1295-302. 2006
    ..5 T with a quadrature head coil. This is expected to be critical for clinical applications of MRSI in patients with brain tumors because it can be used to either decrease acquisition time or improve spatial resolution...
  28. pmc Feasibility of using hyperpolarized [1-13C]lactate as a substrate for in vivo metabolic 13C MRSI studies
    Albert P Chen
    Department of Radiology, University of California, Box 2512, San Francisco, CA 94158 2512, USA
    Magn Reson Imaging 26:721-6. 2008
    ..This study also demonstrated the potential value of this hyperpolarized agent to investigate in vivo lactate uptake and metabolism in preclinical animal models...
  29. ncbi request reprint Single-shot fast spin-echo diffusion tensor imaging of the lumbar spine at 1.5 and 3 T
    Julio Carballido-Gamio
    Department of Radiology, University of California San Francisco, CA 94158, USA
    Magn Reson Imaging 25:665-70. 2007
    ..Results indicate that DTI-SSFSE is a candidate as a clinical sequence for obtaining diffusion tensor images of the lumbar intervertebral discs with scan times shorter than 4 min...
  30. ncbi request reprint Abnormal brain development in newborns with congenital heart disease
    Steven P Miller
    Department of Neurology, University of California at San Francisco, San Francisco, USA
    N Engl J Med 357:1928-38. 2007
    ..We characterized brain metabolism and microstructure, as measures of brain maturation, in newborns with congenital heart disease before they underwent heart surgery...
  31. pmc Development and initial evaluation of 7-T q-ball imaging of the human brain
    Pratik Mukherjee
    Department of Radiology, University of California San Francisco, San Francisco, CA 94143 0628, USA
    Magn Reson Imaging 26:171-80. 2008
    ....
  32. pmc Towards the "baby connectome": mapping the structural connectivity of the newborn brain
    Olga Tymofiyeva
    Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, United States of America
    PLoS ONE 7:e31029. 2012
    ..In the application to infants with HIE, a trend to declining brain network integration and segregation was observed with increasing neuromotor deficit scores...
  33. pmc Cerebellar development in the preterm neonate: effect of supratentorial brain injury
    Emily W Y Tam
    Department of Neurology and Pediatrics, University of California San Francisco, 521 Parnassus Ave, San Francisco, CA 94143, USA
    Pediatr Res 66:102-6. 2009
    ..DTI studies may provide an early indicator for cerebellar injury and abnormal cerebellar development in preterm neonates...
  34. ncbi request reprint Spectroscopic imaging of the brain with phased-array coils at 3.0 T
    Duan Xu
    Joint UCSF UCB Graduate Group in Bioengineering, University of California, San Francisco and Berkeley, CA 94143, USA
    Magn Reson Imaging 24:69-74. 2006
    ..The use of low peak power, dual-band spectral-spatial pulses was also investigated for application to 3 T MRSI of the brain using the body coil for radiofrequency excitation and PA coils for signal reception...
  35. ncbi request reprint Intracranial time-of-flight MR angiography at 7T with comparison to 3T
    Cornelius Von Morze
    Department of Radiology, UCSF, San Francisco, California, USA
    J Magn Reson Imaging 26:900-4. 2007
    ..To establish the feasibility of intracranial time-of-flight (TOF) MR angiography (MRA) at 7T using phased array coils and to compare its performance to 3T...
  36. doi request reprint A serial in vivo 7T magnetic resonance phase imaging study of white matter lesions in multiple sclerosis
    Wei Bian
    The UC Berkeley and UCSF Graduate Program in Bioengineering, University of California San Francisco, USA
    Mult Scler 19:69-75. 2013
    ..This pilot study acquired serial in vivo MR scans at 7T to track the evolution of phase contrast as MS lesions progress...
  37. doi request reprint MRI of the spine: image quality and normal-neoplastic bone marrow contrast at 3 T versus 1.5 T
    Jian Zhao
    Department of Radiology, University of California, San Francisco, 400 Parnassus Ave, A 367, Box 0628, San Francisco, CA 94143 0628, USA
    AJR Am J Roentgenol 192:873-80. 2009
    ..The objectives of our study were to compare image quality of the spine and visualization of spine abnormalities at 3 T and 1.5 T as well as to evaluate differences in quantitative assessment of normal and neoplastic vertebral bone marrow...
  38. pmc A machine learning approach to automated structural network analysis: application to neonatal encephalopathy
    Etay Ziv
    Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, California, United States of America
    PLoS ONE 8:e78824. 2013
    ..Our algorithm offers a novel tool to evaluate neonates at risk for developing neurological deficit. The described approach can be applied to any brain pathology that affects structural connectivity. ..
  39. pmc Perinatal events and early magnetic resonance imaging in therapeutic hypothermia
    Sonia L Bonifacio
    Division of Neonatology, University of California San Francisco, School of Medicine, 533 Parnassus Avenue, U585, Box 0748, San Francisco, CA 94143 0748, USA
    J Pediatr 158:360-5. 2011
    ..To compare the association between perinatal events and the pattern and extent of brain injury on early magnetic resonance imaging in newborn infants with and without therapeutic hypothermia for hypoxic-ischemic encephalopathy...
  40. ncbi request reprint Q-ball reconstruction of multimodal fiber orientations using the spherical harmonic basis
    Christopher P Hess
    Department of Radiology, University of California San Francisco, San Francisco, California 94143 0628, USA
    Magn Reson Med 56:104-17. 2006
    ..In vivo results from 3T whole-brain HARDI of adult volunteers are also provided to verify the underlying mathematical theory...
  41. ncbi request reprint Design of symmetric-sweep spectral-spatial RF pulses for spectral editing
    Charles H Cunningham
    Department of Electrical Engineering, Stanford University, Stanford, California, USA
    Magn Reson Med 52:147-53. 2004
    ..5 T and 3 T. The spectral and spatial spin-echo profiles of the new pulses were measured experimentally. Spectra acquired in phantom experiments showed a well-resolved, edited lactate doublet, with 91% to 93% editing efficiency...
  42. ncbi request reprint Single-shot fast spin-echo diffusion tensor imaging of the brain and spine with head and phased array coils at 1.5 T and 3.0 T
    Duan Xu
    Department of Radiology, University of California, San Francisco CA, USA
    Magn Reson Imaging 22:751-9. 2004
    ..The diffusion tensor SSFSE method was also able to assess diffusion abnormalities in a brain stem hemorrhage, unaffected by the spatial distortions that limited conventional EPI acquisition...
  43. pmc Single-ventricle anatomy predicts delayed microstructural brain development
    Viyeka Sethi
    Department of Pediatrics and Neurology, University of California, San Francisco Benioff Children s Hospital, San Francisco, California, USA
    Pediatr Res 73:661-7. 2013
    ....
  44. pmc Pediatric brain injury: can DTI scalars predict functional outcome?
    Duan Xu
    Department of Radiology and Biomedical Imaging, University of California San Francisco, 1 Irving St, AC112, Box 2512, San Francisco, CA 94143, USA
    Pediatr Radiol 43:55-9. 2013
    ..Other more complex mathematical models and post-processing uses are also discussed briefly...
  45. pmc Malformations of cortical development: diagnostic accuracy of fetal MR imaging
    Orit A Glenn
    Department of Radiology and Biomedical Imaging, Neuroradiology Section, University of California, San Francisco, 505 Parnassus Ave, Box 0628, San Francisco, CA 94143 0628, USA
    Radiology 263:843-55. 2012
    ..To determine the diagnostic accuracy of fetal magnetic resonance (MR) imaging for malformations of cortical development by using postnatal MR imaging as reference standard...