Thomas Frederick Floyd, MD
Adjunct Assistant Professor of Radiology
Department: Radiology
Contact information
Stony Brook University
Department of Anesthesia
Health Sciences Center L4, #060
100 Nicolls Road
Stony Brook, NY 11794-8480
Department of Anesthesia
Health Sciences Center L4, #060
100 Nicolls Road
Stony Brook, NY 11794-8480
Office: 631-444-2975
Fax: 631-444-2907
Fax: 631-444-2907
Email:
floydt@uphs.upenn.edu
floydt@uphs.upenn.edu
Publications
Education:
BS (Chemistry)
Dickinson College, 1981.
MD (Medicine)
University of Pennsylvania, 1986.
Permanent linkBS (Chemistry)
Dickinson College, 1981.
MD (Medicine)
University of Pennsylvania, 1986.
Description of CVI Expertise
CVI Program Unit(s):Cardiovascular Development / Congenital Heart Disease
Biotechnology / Nanomedicine / Imaging
CVI Research Description:
We are currently investigating the role of acute anemia in eliciting cognitive dysfunction in the aged and the role of an age related impaired hypoxic response in that potential etiology. We are studying the contribution of aortic atherosclerosis to the genesis of acute stroke and vascular dementia following aortic valve replacement. We are involved with the development of imaging methodologies for the diagnosis of microvascular disease and the noninvasive measurement of oxygen extraction within the brain and chamber hemoglobin oxygen saturation within the heart for congenital heart disease.
Selected Publications
Langham MC, Magland JF, Floyd TF, and Wehrli FW: Retrospective correction for induced magnetic field inhomogeneity in measurements of large-vessel hemoglobin oxygen saturation by MR susceptometry. Magn Reson Med 61(3): 626-33, Mar 2009.Wu W-C, Wang JJ, Detre JA Wehrli FW, Mohler E, Ratcliffe SJ, and Floyd TF : Hyperemic flow heterogeneity within the calf, foot, and forearm measured with continuous arterial spin labeling MRI. Am J Physiol Heart Circ Physiol 294(5): H2129-2136, Feb 2008.
Wu W-C, Wang JJ, Detre JA, Ratcliffe SJ, and Floyd TF: Transit delay and flow quantification in muscle with continuous arterial spin-labeling perfusion-MRI. J. Magn Reson Imaging 28(2): 445-452, Aug 2008.
Floyd TF, Harris F, McGarvey M, Detre JA: Recurrence of stroke after cardiac surgery: Insight into pathogenesis via diffusion-weighted and continuous arterial spin-labeling perfusion-MRI. J Cardiothorac and Vasc Anes 21(1): 106-109, Feb 2007.
Li M, Ratcliffe SJ, Knoll F, Wu J, Ances B, Mardini W, and Floyd TF: Aging: Impact upon local cerebral oxygenation and blood flow with acute isovolemic hemodilution. J. Neurosurg Anesthesiol 18(2): 125-131, Apr 2006.
Yu G, Floyd TF, Durduran T, Zhou C, Wang J, Detre JA, and Yodh AG: Validation of diffuse correlation spectroscopy for muscle blood flow with concurrent arterial spin-labeled perfusion MRI. Opt. Express 15: 1064-1075, 2007.
Floyd TF, Shah PN, Price CC, Harris F, McGarvey ML, Acker MA, Bavaria JE, Pochettino AA, Woo J, and Melhem ER: Clinically silent cerebral ischemic events after cardiac surgery: Their incidence, regional vascular occurrence, and procedural dependence. Annals Thorac Surg 81(6): 2160-2166, Jun 2006.
Detre J and Floyd T: Functional MRI and its application to the clinical neurosciences. The Neuroscientist 7(1): 64-79, Feb 2001.
Floyd TF, Clark JM, Gelfand R, Guvakov D, Detre JA, Lambertsen CJ, and Eckenhoff RG: The cerebral vasoconstrictive effect of hyperoxia at one ATA. J Applied Physiol 95(6): 2453-2461, Dec 2003.
Floyd TF, Ratcliffe SJ, Wang JJ, Resch B, and Detre JA: Precision of the CASL-Perfusion MRI technique for the measurement of cerebral blood flow in whole brain and vascular territories. J Magn Reson Imaging 18(6): 649-655, Dec 2003.
Floyd TF, McGarvey M, Ochroch EA, Cheung AT, Augoustides JA, Bavaria JE, Acker MA. Pochettino A, and Detre JA: Perioperative changes in cerebral blood flow after cardiac surgery: Influence of anemia and aging. Annals Thorac Surg 76(6): 2037-2042, Dec 2003.