'Gradient echo' presentation slideshows

Neuroimaging For Forensic Psychologists September 23, 2011

Neuroimaging For Forensic Psychologists September 23, 2011. Hal S. Wortzel, MD Director, MIRECC Neuropsychiatric Consultation Services and Psychiatric Fellowship VISN 19 MIRECC, Denver Veterans Hospital Assistant Professor of Psychiatry

866 views • 71 slides

Biomedical Imaging II

1.15k views • 69 slides

Starting up a Functional MRI Center

Starting up a Functional MRI Center. Peter A. Bandettini, Ph.D Unit on Functional Imaging Methods & 3T Neuroimaging Core Facility Laboratory of Brain and Cognition National Institute of Mental Health. Technology. Methodology. Interpretation. Applications. Technology. Methodology.

827 views • 66 slides

Starting up a Functional MRI Center

Starting up a Functional MRI Center. Peter A. Bandettini, Ph.D Unit on Functional Imaging Methods & 3T Neuroimaging Core Facility Laboratory of Brain and Cognition National Institute of Mental Health. Technology. Methodology. Interpretation. Applications. Technology. Methodology.

671 views • 66 slides

Department of Radiology University of California San Diego

Department of Radiology University of California San Diego. MR Imaging of the Brain. John R. Hesselink, M.D. MR System Components. Transmitter. Gradient Amplifier. RF Coil. Gradient. Computer. Gradient. RF Coil. Magnet. Receiver. Digitizer. Source of Signal and Contrast.

699 views • 62 slides

Miscellaneous topics

Miscellaneous topics. Heteronuclear NOE : HOESY Shift reagent Chemical exchange Measuring pH Diffusion : DOSY. t 1. t m. Dec. 1 H. X. X-detected HOESY experiment. H eteronuclear O verhauser E ffect S pectroscop Y. The first 90 o pulse create transverse H magnetization

888 views • 49 slides

Pulse Sequences

Pulse Sequences. Types of Pulse Sequences: Spin Echo Gradient Echo Inversion Recovery Echo Planar Imaging Functional Techniques Diffusion-weighted imaging Perfusion weighted imaging Spectroscopy fMRI. Pulse Sequences. Spin Echo (SE) (Conventional Spin Echo)

1.73k views • 42 slides

Diffusion MRI in the Neurosciences

649 views • 39 slides

Gradient Echoes, Diffusion, & EPI

Gradient Echoes, Diffusion, & EPI. Two recent MRI clinical research tools - Echo Planar Imaging ( EPI ) Diffusion Weighted Imaging ( DWI ). Clinical EPI applications. Very rapid imaging (fastest clinical). 128x128 image < 100 ms.

566 views • 37 slides

Magnetic Resonance Imaging: Physical Principles

Magnetic Resonance Imaging: Physical Principles. Richard Watts, D.Phil., Yi Wang, Ph.D. Weill Medical College of Cornell University, New York, USA. Nuclear Magnetic Resonance Nuclear spins Spin precession and the Larmor equation Static B0 RF excitation RF detection Spatial Encoding

388 views • 35 slides

Magnetic Resonance Imaging: Physical Principles

Magnetic Resonance Imaging: Physical Principles. Richard Watts, D.Phil. Weill Medical College of Cornell University, New York, USA. Nuclear Magnetic Resonance Nuclear spins Spin precession and the Larmor equation Static B0 RF excitation RF detection Spatial Encoding

427 views • 35 slides

Magnetic Resonance Imaging

Magnetic Resonance Imaging. Magnetic field gradients. Gradient echo. T 2 * envelope. M xy. Time. Equal areas. Gradient Amplitude. Gradient echo. Slice selection using gradients. Sample. B z. B (x 1 ). B (x 2 ). x. x 1. x 2. Slice selection.

771 views • 32 slides

AVERAGING

AVERAGING. BANDWIDTH. LARGE (WIDE). SMALL (NARROW). PELVIS. FOV 340 RFOV 65 Slice 7mm Matrix 256 Scan Percent 60 NSA 4 Time 5:54. KNEE. FOV 160 RFOV 80 Matrix 256 Scan Percent 90 Turbo Spin Echo Slice 4 NSA 2 Knee Coil Time 2:28. WRIST. Gradient Echo 3D Volume Acq.

388 views • 25 slides

565 views • 23 slides

IMPORTANT CONCEPTS

IMPORTANT CONCEPTS. Factors Affecting Acquisition Speed Limitations To Reducing TR Why Small Flip Angles Why Gradient Echo Contrast Control With Gradient Echo Echo Planar Imaging Gradient and Spin Echo (GRASE).

318 views • 17 slides

Statistical Parametric Mapping

Statistical Parametric Mapping. Lecture 5 - Chapter 6 Selection of the optimal pulse sequence for fMRI. Textbook : Functional MRI an introduction to methods , Peter Jezzard, Paul Matthews, and Stephen Smith. Many thanks to those that share their MRI slides online.

331 views • 17 slides

Echoes, gradients and dephasing

220 views • 16 slides