101. HOME - APPLIED PHYSICS SERVICES Provides medical physics services including acceptance testing, accreditation, calibration, radiation safety, research and development and training services. http://physicsservice.com

102. Simply Physics - Home Of MRI Physics Put Simply Textbook for sale providing a basic overview of the physics of MRI. http://www.simplyphysics.com/MAIN.HTM

Welcome to *NEW* Download an article from the Journal of Medical Physics debating the value of the physics component of the ACR mandated MRI Quality Control program. MRI Accreditation Services ACR MRI Accreditation Having problems putting together your ACR submission? Acquiring the phantom images? We can help. MRI Quality Control The ACR states: "Sites involved in the accreditation program must develop a QC program that is consistent with the tests and frequencies that are listed in the ACR quality control manual by August 1, 2002." We have the experience you need to put it all in place. Acceptance Testing Before you sign off and accept your newly installed MRI scanner, you should have a qualified 3rd party come in and check out your system from top to bottom. Why Conduct Yearly Performance Evaluation?

103. MRI Physics Provides a summary of the science behind MRI using every day language. Includes some example images. http://www.mridoc.com/physics.html

Home Education Sequences Equipment ... Body Physics Section So how does that MRI machine work? There are plenty of books out there that will enlighten you on the theory behind MR image. Each scanner is a little bit different and each new sequence is a variation of one of few themes. Most of the MRI sequences are based on basic acquisitions such as spin echo or gradient echo techniques. There are also fancy new sequences, which exploit movement of protons in the blood stream and, at times, even artifacts to the advantage of highlighting a particular property of a given tissue. Below, we attempt to explain physics of MRI in the simplest possible terms. If you have ever taken college level physics and chemistry courses, you should be able to follow along with ease. One fundamental principle required to understand MR imaging is the concept of electromagentic energy. Radio receiver in your car accepts radiofrequency (RF) waves, which represent one form of electromagnetic energy. Similarly, protons in living tissues are able to accept electromagentic energy in the form of RF pulse. This RF pulse "excites" the protons to a higher energy level. As the protons "relax", energy is emitted back to the antennas in MR machines. Unfortunatelly, the amount of energy that is emitted back from the protons is very small. So a few tricks are performed to maximize signal to noise ratio.

104. Physics@nature.com : Physics Articles, Jobs And Information physics news and research papers, a showcase of science articles that Nature is publishing about physics, astrophysics and spectroscopy. http://www.nature.com/physics/

Jump to main content nature.com homepage Publications A-Z index ... Login Search This subject area All of Nature.com Advanced search New from NPG Nature Outlook Science Masterclass In acknowledgement of the 60th Lindau Meeting of Nobel Laureates, Nature looks at the hard work, inspiration and ultimate recognition associated with a life dedicated to scientific enquiry. Access the Outlook free online for 6 months and watch Nobel Laureates question a panel of young scientists. Produced with support from Mars Incorporated, VP Bank Stiftung and BMBF naturejobs CRA Trainee Quintiles Technologies (India) Pvt. Ltd Bangalore, Karnataka India Postgraduate Opportunities University of Glasgow Glasgow, G12 8QQ, UK More science jobs Post a job for free Naturejobs Prospects ... events directory Search Natureevents NPG Journals in physics Featured Articles Nature Astrophysics: Weighing in on neutron stars Nature Quantum tunnelling of the magnetization in a monolayer of oriented single-molecule magnets ... Piezoelectric-nanowire-enabled power source for driving wireless microelectronics Research Collection Physics papers published in Nature, from 2000 onwards

105. Dominik.net: Dominik Rabiej's Personal Website This interactive physics web site directory categorizes, collates and reviews web sites relating to physics. It also allows visits to discuss and comment on the sites. http://www.dominik.net/physics/

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