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WEBSITES : MRI PHYSICS WEBSITES |  |
Few
Useful Websites on MRI Physics 1.
K-Space Tool is an interactive educative feature that focuses on manipulation
of K Space data before performing the 2DFT in order to create an image. Available
at http://www.revisemri.com/tools/kspace/index.htm
, there are graphical representations of Original k-space, and the effects on
it by a series of manipulations: low and high pass filters, random and periodic
motion artifacts, Random noise, Large and small RF spike near centre and periphery
etc.
2. A Traveler's Guide to k-Space: In search of Non-Invasive
Angiography is an educative feature from the Radiology InfoNet Series course
available at http://www.radinfonet.com/cme/mistretta/traveler.htm
Authored by Charles A. Mistretta, and J.R. Cameron, from the Departments of Medical
Physics and Radiology at University of Wisconsin, the educative material of this
tricky topic has been written in a refreshing and innovative style.
3. Shared Resources and Tools of the UCLA Brain mapping are available at http://airto.bmap.ucla.edu/BMCweb/SharedCode/.
The UCLA Brain mapping center offers academic discourse and sharing of educative
resources on MRI. The topics that are available presently are Papers on MRI, MR
Image Quality, Introduction to Rapid MR Imaging, Functional MRI Basics. Breaking
the Speed Limit in MRI is an informative and educative material authored by
Cohen, M.S., Rosen, B.R., Brady, T.J.et al. The copyrighted material published
originally in "MR", is available at http://airto.bmap.ucla.edu/BMCweb/SharedCode/SpeedLimit/SpeedLimit.html
4.
Magnetic Resonance - Technology Information Project at http://www.mr-tip.com
is a recently developed web portal focusing on the professional needs of the 'MRI
Professional'. The Web portal known as MR-TIP.com covers comprehensively the basics
to the latest. As an elegant Search engine and a broad database, it offers information
on varied topics such as 'Artifacts', 'Contrast Agents', 'Pulse Sequence', 'Device
Information', and 'Safety Guidance' and connects to MRI Specific links to more
than 1600 publications and resource sites.
5.
The M.A.R.S. Project represents MRI Acronym Registration
Service. Created by Dr. Moriel NessAiver Assistant Professor of Radiology
at the University of Maryland School of Medicine in Baltimore, Maryland, supported
by Rao P. Gullapalli, PhD, Arjun V. Kaji, M.D and sponsored by Simply Physics,
the MARS website available at http://mars.umaryland.edu/mars/Default.html
has been made accessible once again on the Web from November 2003. This site deals
with the multitude of MR acronyms available in a directory format at http://www.simplyphysics.com/MARS.HTM
6. The Basis of Contrast in Magnetic Resonance Imaging is a mathematical
treatise, focusing on signal-to-noise, resolution and contrast and how to generate
images of the human body. Authored by E. Mark Haacke, Ph.D, from the MRI Institute
for Biomedical Research at St. Louis, Missouri and Ramesh Venkatesan, D.Sc of
Wipro GE Medical Systems, Bangalore India, this material is available at http://www.mrimaging.com/html/edu/overview.htm
7. Contrast Agents in Magnetic Resonance Imaging is a concise educative material
authored by Andrei Volkov. Available at http://www.cc.utah.edu/~av6a51/mri.htm,
the material focuses on Methods of Image Enhancement, Contrast Agents for MRI
Paramagnetic Contrast Agents, Gadolinium(III) complexes, Monocrystalline Iron
Oxide Nanocompounds, Metalloporphyrines of Iron(III) and Manganese(III)
8. Animated MRI Physics Tutorials are available from Leeds Cardiac
Magnetic Resonance a provider of Cardiac MRI services in northern England. The
tutorials available at http://www.leedscmr.org/education/mriphysics/index.htm
focuses on MRI physics and can be easily considered as a MRI physics revision
site. The educative topics available at the moment are What is K-Space? , How
K-Space Works, Receiver Bandwidth and Chemical Shift.
9. MRI Contrast
Simulators is available from the UCLA Brain Mapping Centre which is fashioned
by Mark S. Cohen, PhD http://airto.bmap.ucla.edu/BMCweb/SharedCode/ContrastSim.html#Anchor-SpinEcho-30991.
A variety of simulators are available as Spin Echo, a Standalone Simulator, FLASH
Simulation, and Contrast Simulations. To use one enters values for the T1 and
T2 of the tissues of interest, as well as starting pulse sequence parameters,
including TR, TE and Flip Angle
10. The Basics of MRI is an online
textbook written by JP Hornak from Rochester Institute of Technology. The Chapter
on Advanced Imaging Techniques at http://www.cis.rit.edu/htbooks/mri/chap-12/chap-12.htm
covers the physical principles of 3-D Imaging, Flow Imaging, Diffusion Imaging,
Chemical Shift Imaging, Echo Planar Imaging, NMR Spectroscopy, Magnetization Transfer
Contrast etc.
Endpiece
FONAR MRI Glossary and ACR Glossary of MR Terms
are available from http://fonar.com/glossary.htm
and http://www.acr.org/publications/active/mr_gloss.pdf
respectively. An interesting piece on University of Nottingham's contributions
to the glorious history of MRI is available at http://www.magres.nottingham.ac.uk/history/
.
Dr IK Indrajit MD DNB
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