A J Martin

Summary

Affiliation: University of California
Country: USA

Publications

  1. ncbi MR imaging of partially thrombosed cerebral aneurysms: characteristics and evolution
    A J Martin
    Department of Radiology, University of California, San Francisco, 94143, USA
    AJNR Am J Neuroradiol 32:346-51. 2011
  2. ncbi Placement of deep brain stimulator electrodes using real-time high-field interventional magnetic resonance imaging
    Alastair J Martin
    Department of Radiology, University of California, San Francisco, California 94143, USA
    Magn Reson Med 54:1107-14. 2005
  3. ncbi Assessment of vasculature of meningiomas and the effects of embolization with intra-arterial MR perfusion imaging: a feasibility study
    A J Martin
    Department of Radiology, University of California, San Francisco, CA 94143, USA
    AJNR Am J Neuroradiol 28:1771-7. 2007
  4. ncbi Minimally invasive precision brain access using prospective stereotaxy and a trajectory guide
    Alastair J Martin
    Department of Radiology, University of California, San Francisco, California 94143, USA
    J Magn Reson Imaging 27:737-43. 2008
  5. ncbi Steady-state imaging for visualization of endovascular interventions
    Alastair J Martin
    Department of Radiology, University of California San Francisco, San Francisco, California 94143, USA
    Magn Reson Med 50:434-8. 2003
  6. ncbi MR imaging during endovascular procedures: an evaluation of the potential for catheter heating
    Alastair J Martin
    Department of Radiology, University of California, San Francisco, San Francisco, California 94143, USA
    Magn Reson Med 61:45-53. 2009
  7. ncbi Software requirements for interventional MR in restorative and functional neurosurgery
    Alastair J Martin
    Department of Radiology and Biomedical Imaging, University of California San Francisco, Box 0628, Room L 310, 505 Parnassus Avenue, San Francisco, CA 94143, USA
    Neurosurg Clin N Am 20:179-86. 2009
  8. ncbi Brain tumor resection: intraoperative monitoring with high-field-strength MR imaging-initial results
    A J Martin
    Department of Radiology, University of Minnesota, Minneapolis, MN 55455 0392, USA
    Radiology 215:221-8. 2000
  9. ncbi MR-guided and MR-monitored neurosurgical procedures at 1.5 T
    H Liu
    Department of Radiology, University of Minnesota Medical School, Minneapolis 55455, USA
    J Comput Assist Tomogr 24:909-18. 2000
  10. ncbi An efficient chemical shift imaging scheme for magnetic resonance-guided neurosurgery
    H Liu
    Center for MR Guided Therapy, Department of Radiology, Medical School, University of Minnesota, Mayo Building, Minneapolis, Minnesota 55455, USA
    J Magn Reson Imaging 14:1-7. 2001

Detail Information

Publications39

  1. ncbi MR imaging of partially thrombosed cerebral aneurysms: characteristics and evolution
    A J Martin
    Department of Radiology, University of California, San Francisco, 94143, USA
    AJNR Am J Neuroradiol 32:346-51. 2011
    ..We investigated the ability of T1-weighted, T2-weighted, and steady-state MR imaging techniques to delineate thrombus morphology and reveal changes with time...
  2. ncbi Placement of deep brain stimulator electrodes using real-time high-field interventional magnetic resonance imaging
    Alastair J Martin
    Department of Radiology, University of California, San Francisco, California 94143, USA
    Magn Reson Med 54:1107-14. 2005
    ..0 +/- 0.8 mm (range = 0.1-1.9 mm). All procedures were considered technical successes and there were no intraoperative complications; however, one patient did develop a postoperative infection...
  3. ncbi Assessment of vasculature of meningiomas and the effects of embolization with intra-arterial MR perfusion imaging: a feasibility study
    A J Martin
    Department of Radiology, University of California, San Francisco, CA 94143, USA
    AJNR Am J Neuroradiol 28:1771-7. 2007
    ..We investigate the benefits that selective injection of MR contrast may have in identifying vascular territories and determining the effects of embolization therapy...
  4. ncbi Minimally invasive precision brain access using prospective stereotaxy and a trajectory guide
    Alastair J Martin
    Department of Radiology, University of California, San Francisco, California 94143, USA
    J Magn Reson Imaging 27:737-43. 2008
    ..To evaluate the capabilities of MR-guided "prospective stereotaxy" methods for accessing brain structures for biopsy or electrode implantation...
  5. ncbi Steady-state imaging for visualization of endovascular interventions
    Alastair J Martin
    Department of Radiology, University of California San Francisco, San Francisco, California 94143, USA
    Magn Reson Med 50:434-8. 2003
    ..The addition of a blood pool agent in an in vivo model was found to be necessary for adequate visualization of a dysprosium-marked catheter...
  6. ncbi MR imaging during endovascular procedures: an evaluation of the potential for catheter heating
    Alastair J Martin
    Department of Radiology, University of California, San Francisco, San Francisco, California 94143, USA
    Magn Reson Med 61:45-53. 2009
    ..2 W/kg produced negligible heating near catheters. For the evaluated application, substantial SAR restrictions, coupled with limited imaging durations, are proposed as sufficient to permit MRI without concern for thermal injury...
  7. ncbi Software requirements for interventional MR in restorative and functional neurosurgery
    Alastair J Martin
    Department of Radiology and Biomedical Imaging, University of California San Francisco, Box 0628, Room L 310, 505 Parnassus Avenue, San Francisco, CA 94143, USA
    Neurosurg Clin N Am 20:179-86. 2009
    ..An optimal software interface for iMRI requires fusion of many of the capabilities offered by these individual devices and further requires the development of tools to handle the integration and presentation of dynamically updated data...
  8. ncbi Brain tumor resection: intraoperative monitoring with high-field-strength MR imaging-initial results
    A J Martin
    Department of Radiology, University of Minnesota, Minneapolis, MN 55455 0392, USA
    Radiology 215:221-8. 2000
    ..To investigate the challenges and benefits of magnetic resonance (MR) imaging during brain tumor resection...
  9. ncbi MR-guided and MR-monitored neurosurgical procedures at 1.5 T
    H Liu
    Department of Radiology, University of Minnesota Medical School, Minneapolis 55455, USA
    J Comput Assist Tomogr 24:909-18. 2000
    ....
  10. ncbi An efficient chemical shift imaging scheme for magnetic resonance-guided neurosurgery
    H Liu
    Center for MR Guided Therapy, Department of Radiology, Medical School, University of Minnesota, Mayo Building, Minneapolis, Minnesota 55455, USA
    J Magn Reson Imaging 14:1-7. 2001
    ..The multiecho scheme has made the CSI technique efficient enough to be routinely used in MR-guided surgical procedures at 1.5 T and also allows the possibility of taking full advantage of MRI capability...
  11. ncbi Interventional MRI at high-field (1.5 T): needle artifacts
    H Liu
    Center of Image Guided Therapy, Department of Radiology, University of Minnesota, Minneapolis 55455, USA
    J Magn Reson Imaging 8:214-9. 1998
    ..Images of actual human brain tumor biopsies performed using the same needle under MRI guidance and monitoring demonstrated this artifact...
  12. ncbi Biopsy needle tip artifact in MR-guided neurosurgery
    H Liu
    Center for MR Guided Therapy, Department of Radiology, Medical School, University of Minnesota, Minneapolis, Minnesota 55455, USA
    J Magn Reson Imaging 13:16-22. 2001
    ..J. Magn. Reson. Imaging 2001;13:16-22...
  13. ncbi Estimation of fusiform intracranial aneurysm growth by serial magnetic resonance imaging
    Bradley P Dispensa
    Department of Anesthesia and Perioperative Care and Center for Cerebrovascular Research, University of California San Francisco, San Francisco, California 94110, USA
    J Magn Reson Imaging 26:177-83. 2007
    ..Intracranial aneurysm (IA) growth is associated with increased morbidity. We sought to establish a quantitative computational method based on contrast-enhanced MR angiography (CE-MRA) for estimating aneurysmal volume changes over time...
  14. ncbi Myocardial microinfarction after coronary microembolization in swine: MR imaging characterization
    Marcus Carlsson
    Department of Radiology and Biomedical Imaging, University of California San Francisco, 513 Parnassus Ave, HSW 207B, San Francisco, CA 94134, USA
    Radiology 250:703-13. 2009
    ..To use first-pass perfusion and delayed-enhanced (DE) magnetic resonance (MR) imaging for the detection of the early effects of coronary microembolization on myocardial perfusion and viability...
  15. ncbi Flow residence time and regions of intraluminal thrombus deposition in intracranial aneurysms
    V L Rayz
    Department of Radiology, University of California San Francisco, 4150 Clement Street, San Francisco, CA 94121, USA
    Ann Biomed Eng 38:3058-69. 2010
    ..A model including both low WSS and increased RT predicted thrombus-prone regions significantly better than the models with RT or WSS alone...
  16. ncbi Quantitative MR measurements of regional and global left ventricular function and strain after intramyocardial transfer of VM202 into infarcted swine myocardium
    Marcus Carlsson
    Dept of Radiology and Biomedical Imaging, UCSF, 513 Parnassus Ave, HSW207B, San Francisco, CA 94134 0628, USA
    Am J Physiol Heart Circ Physiol 295:H522-32. 2008
    ..The combined use of cine and tagging MR imaging provides valuable information on the efficacy of gene therapy...
  17. ncbi Magnetic resonance imaging quantification of left ventricular dysfunction following coronary microembolization
    Marcus Carlsson
    Department of Radiology and Biomedical Imaging, University of California, San Francisco, San Francisco, California 94134, USA
    Magn Reson Med 61:595-602. 2009
    ..It also changed LV geometry and decreased radial and circumferential strain over the course of 1 week...
  18. ncbi Interventional magnetic resonance guidance of deep brain stimulator implantation for Parkinson disease
    Alastair J Martin
    Departments of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94143, USA
    Top Magn Reson Imaging 19:213-21. 2009
    ..Preliminary evaluation of clinical outcomes indicates comparable results to that achieved with conventional implantation methods, and the technique holds promise for substantially reducing operative durations...
  19. ncbi Experimental renal artery embolization in a combined MR imaging/angiographic unit
    Mark W Wilson
    Department of Radiology, University of California, San Francisco, 505 Parnassus Avenue, Room M 361, San Francisco, CA 94143, USA
    J Vasc Interv Radiol 14:1169-75. 2003
    ....
  20. ncbi Implantation of deep brain stimulator electrodes using interventional MRI
    Philip A Starr
    Department of Neurosurgery, University of California, San Francisco, 533 Parnassus Avenue Box 0445, San Francisco, CA 94143, USA
    Neurosurg Clin N Am 20:193-203. 2009
    ..With further technical refinement, the interventional MRI method should improve the accuracy, safety, and speed of deep brain stimulator electrode placement...
  21. ncbi Subthalamic nucleus deep brain stimulator placement using high-field interventional magnetic resonance imaging and a skull-mounted aiming device: technique and application accuracy
    Philip A Starr
    Department of Neurosurgery, University of California, San Francisco, California 94143, USA
    J Neurosurg 112:479-90. 2010
    ....
  22. ncbi Heterogeneous microinfarcts caused by coronary microemboli: evaluation with multidetector CT and MR imaging in a swine model
    Marcus Carlsson
    Department of Radiology and Biomedical Imaging and Department of Pathology, University of California, San Francisco, 185 Berry St, Suite 350, Campus Box 0946, San Francisco, CA 94107 5705, USA
    Radiology 254:718-28. 2010
    ..Conclusion: Modern multidetector CT and MR imaging are sensitive modalities with which to depict heterogeneous microinfarcts and determine regional LV dysfunction and decreased perfusion in the territory of intervention. (c) RSNA, 2010...
  23. ncbi Noninvasive MR characterization of structural and functional components of reperfused infarct
    Maythem Saeed
    Department of Radiology and Biomedical Imaging, University of California San Francisco, San Francisco, CA 94107 5705, USA
    Acta Radiol 51:1093-102. 2010
    ..left ventricular (LV) remodeling is a highly complex phenomenon that starts soon after infarction and progresses to extensive regional and global architectural changes over time...
  24. ncbi MR guidance of targeted injections into border and core of scarred myocardium in pigs
    Maythem Saeed
    Department of Radiology, University of California San Francisco, 513 Parnassus Ave, Room HSW 207 B, San Francisco, CA 94143 0628, USA
    Radiology 240:419-26. 2006
    ....
  25. ncbi Magnetic resonance imaging of implanted deep brain stimulators: experience in a large series
    Paul S Larson
    Department of Neurological Surgery, University of California, San Francisco, CA 94143 0112, USA
    Stereotact Funct Neurosurg 86:92-100. 2008
    ..This series strongly suggests that the 0.1 W/kg recommendation for SAR may be unnecessarily low for the prevention of MRI-related adverse events...
  26. ncbi Injection of adeno-associated viral vector encoding vascular endothelial growth factor gene in infarcted swine myocardium: MR measurements of left ventricular function and strain
    Alexis Jacquier
    Department of Radiology, University of California San Francisco, 513 Parnassus Ave, HSW 207 B, San Francisco, CA 94134 0628, USA
    Radiology 245:196-205. 2007
    ....
  27. ncbi Whole-heart steady-state free precession coronary artery magnetic resonance angiography
    Oliver M Weber
    Department of Radiology, University of California San Francisco, San Francisco, California 94143, USA
    Magn Reson Med 50:1223-8. 2003
    ..It is concluded that the whole-heart coronary MRA technique improves visible vessel length and facilitates high-quality coronary MRA of the complete coronary artery tree in a single measurement...
  28. ncbi Endovascular stents in pulmonary valve and artery in swine: feasibility study of MR imaging-guided deployment and postinterventional assessment
    Titus Kuehne
    Department of Radiology, University of California San Francisco, 505 Parnassus Ave, L308, San Francisco, CA 94143-0628, USA
    Radiology 226:475-81. 2003
    ..CONCLUSION: MR imaging has the potential to guide stent placement in the pulmonary valve or artery and to evaluate flow volume within the stent lumen after the intervention...
  29. ncbi Free-breathing, three-dimensional coronary artery magnetic resonance angiography: comparison of sequences
    Oliver M Weber
    Department of Radiology, University of California, San Francisco, USA
    J Magn Reson Imaging 20:395-402. 2004
    ..To compare six free-breathing, three-dimensional, magnetization-prepared coronary magnetic resonance angiography (MRA) sequences...
  30. ncbi Preliminary assessment of turbo spectroscopic imaging for targeting in brain biopsy
    A J Martin
    Department of Radiology, University of Minnesota School of Medicine, 420 Delaware St. SE, Minneapolis, MN, USA
    AJNR Am J Neuroradiol 22:959-68. 2001
    ..Coupling TSI targeting with conventional imaging and intraoperative confirmation of needle positioning resulted in a 100% diagnostic success rate and increased the clinician's confidence in the histologic findings...
  31. ncbi Estimating the hemodynamic impact of interventional treatments of aneurysms: numerical simulation with experimental validation: technical case report
    Gabriel Acevedo-Bolton
    Department of Radiology, Veterans Affairs Medical Center San Francisco, San Francisco, California 94121, USA
    Neurosurgery 59:E429-30; author reply E429-30. 2006
    ....
  32. ncbi Magnetic resonance perfusion tracks 133Xe cerebral blood flow changes after carotid stenting
    Nerissa U Ko
    Department of Neurology, University of California, San Francisco, USA
    Stroke 36:676-8. 2005
    ..CONCLUSIONS: Bolus-tracking MR perfusion correlates with 133Xe-CBF in estimating postprocedural increases in blood flow but may underestimate the magnitude of the change with higher relative changes...
  33. ncbi Perfusion MR neuroimaging in patients undergoing balloon test occlusion of the internal carotid artery
    E Michel
    Department of Radiology, University of Minnesota Hospital, 420 Delaware St SE, MMC 292, Minneapolis, MN 55455, USA
    AJNR Am J Neuroradiol 22:1590-6. 2001
    ....
  34. ncbi Interventional cardiac magnetic resonance imaging
    Oliver M Weber
    Departments of Radiology, Electrophysiology, Medicine, and Pediatric Cardiology, University of California at San Francisco, 505 Parnassus Ave, L310 Box 0628, San Francisco, CA 94143-0628, USA
    Semin Roentgenol 38:352-7. 2003
  35. ncbi Measurement of cerebrospinal fluid oxygen partial pressure in humans using MRI
    Greg Zaharchuk
    Department of Radiology, University of California-San Francisco, San Francisco, California 94143-0628, USA
    Magn Reson Med 54:113-21. 2005
    ..Similar approaches could be applied to noninvasively monitor oxygenation in many acellular, low-protein body fluids...
  36. ncbi MR portal venography: preliminary results of fast acquisition without contrast material or breath holding
    Mark W Wilson
    Department of Radiology, University of California, San Francisco, 94143-0628, USA
    Acad Radiol 9:1179-84. 2002
    ..CONCLUSION: MR venography with SSFP accurately depicted the portal venous system in 10 of 11 patients without the use of respiratory suspension or contrast material...
  37. ncbi Numerical simulations of flow in cerebral aneurysms: comparison of CFD results and in vivo MRI measurements
    Vitaliy L Rayz
    Radiology Service, VA Medical Center San Francisco, 4150 Clement Street, San Francisco, CA 94121, USA
    J Biomech Eng 130:051011. 2008
    ..The results demonstrate the clinical relevance of computational models and suggest that realistic patient-specific flow conditions are required for numerical simulations of the flow in aneurysmal blood vessels...
  38. ncbi Carotid stent delivery in an XMR suite: immediate assessment of the physiologic impact of extracranial revascularization
    Alastair J Martin
    Department of Radiology, University of California--San Francisco, San Francisco, CA 94143, USA
    AJNR Am J Neuroradiol 26:531-7. 2005
    ..CONCLUSION: MR imaging reliably reflects the state of the carotid artery and provides a means of monitoring and quantifying the effects of revascularization...
  39. ncbi Real-time MR properties of particulate embolic agents tested in a dynamic flow model
    Nicholas Fidelman
    Department of Radiology, University of California, San Francisco, 505 Parnassus Avenue, Room M-361, San Francisco, California 94143-0628, USA
    J Vasc Interv Radiol 13:613-8. 2002
    ..After particle injection, direct inspection of the filter chamber showed trapping of all particle types and sizes. CONCLUSION: Real-time MR tracking of Gd-impregnated embolic agents is possible in vitro...