Faculty & Staff

Thomas Frederick Floyd, MD

faculty photo
Department: Radiology

Contact information
Stony Brook University
Department of Anesthesia
Health Sciences Center L4, #060
100 Nicolls Road
Stony Brook, NY 11794-8480
Office: 631-444-2975
Fax: 631-444-2907
BS (Chemistry)
Dickinson College, 1981.
MD (Medicine)
University of Pennsylvania, 1986.
Post-Graduate Training
Intern in Surgery, University of Minnesota Hospitals, Minneapolis, MN, 1986-1987.
Resident in Anesthesiology, University of Minnesota Hospitals, Minneapolis, MN, 1987-1990.
Fellowship-NIH Research Training Grant, Neurologic Complications & Cardiac Surgery, Department of Anesthesia, Hospital of the University of Pennsylvania, Philadelphia, PA, 1999-2001.
Fellowship-Cardiovascular Anesthesia, Department of Anesthesia, Hospital of the University of Pennsylvania, Philadelphia, PA, 2000-2001.
Diplomate/National Board of Medical Examiners, #317048, 1987.
Diplomate, American Board of Anesthesiology, #19300 , 1991.
Testamur, National Board of Echocardiography- Transesophageal Echocardiography, #020101, 2002.
Permanent link
> Perelman School of Medicine   > Faculty   > Details

Description of Research Expertise

1) Perioperative Stroke & Cognitive Impairment
2) Dynamic Magnetic Resonance Imaging for the Measurement of Cerebral Blood Flow
3) Difusion Tensor Imaging for Brain Phenotyping of Aging in Animal Models
4) Noninvasive MRI Measurement of Tissue & Vascular Flow & Oxygenation
5) Anemia & Cognitive Impairment
6) Aging & Hypoxia Sensing in Brain
7) Exacerbation of Stroke by Hemostatic Agents

Description of Clinical Expertise

1) Cardiovascular, Thoracic, & Vascular Anesthesiology
2) Adult Congenital Heart Disease
3) Transesophageal Echocardiography
4) Perioperative Stroke
5) Peripheral Arterial 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.

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.

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, 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.

Detre J and Floyd T: Functional MRI and its application to the clinical neurosciences. The Neuroscientist 7(1): 64-79, Feb 2001.

back to top
Last updated: 01/06/2011
The Trustees of the University of Pennsylvania