Important: Use custom search function to get better results from our thousands of pages

Use " " for compulsory search eg:"electronics seminar" , use -" " for filter something eg: "electronics seminar" -"/tag/" (used for exclude results from tag pages)
Ask More Info Of  A Seminar Ask More Info Of A Project Post Reply  Follow us on Twitter
20-08-2013, 03:59 PM
Post: #1
Magnetic Resonance Imaging (MRI) ppt

Magnetic Resonance Imaging (MRI)


.pptx  Resonance Imaging.pptx (Size: 712.82 KB / Downloads: 8)

Introduction

What is MRI?


Magnetic resonance imaging (MRI) is a spectroscopic imaging technique used in medical settings to produce images of the inside of the human body.
MRI is based on the principles of nuclear magnetic resonance (NMR), which is a spectroscopic technique used to obtain microscopic chemical and physical data about molecules
In 1977 the first MRI exam was performed on a human being. It took 5 hours to produce one image.

The Components:

A magnet which produces a very powerful uniform magnetic field.
Gradient Magnets which are much lower in strength.
Equipment to transmit radio frequency (RF).
A very powerful computer system, which translates the signals transmitted by the coils.

The Magnet

The most important component of the MRI scanner is the magnet:
The magnets currently used in scanners today are in the .5-tesla to 2.0-tesla range (5,000 to 20,000-gauss).
Higher values are used for research.
Earth magnetic field: 0.5-gauss

The Technology

How Does It All Work?


Spin:
The atoms that compose the human body have a property known as spin (a fundamental property of all atoms in nature like mass or charge).
Spin can be thought of as a small magnetic field and can be given a + or – sign and a mathematical value of multiples of ½.
Components of an atom such as protons, electrons and neutrons all have spin.

THE FUTURE OF MRI

The possibility of having very small machines
that scan specific parts of the body.
The continuing improvements on seeing the
venous and arterial systems.
Brain mapping while the patient does specific
tasks, allowing clinician’s to see what part of the brain is responsible for that task/activity.
Improvements on the ability to do MRI’s of the lungs.

DISADVANTAGES OF MRI

Expensive
Long scan times
Audible noise (65-115dB)
Isolation of patient (claustrophobia, monitoring of ill patients)
Exclusion of patients with pacemakers and certain implants
Rating Magnetic Resonance Imaging (MRI) ppt Options
Share Magnetic Resonance Imaging (MRI) ppt To Your Friends :- Seminar Topics Bookmark
Post Reply 

Marked Categories : component parts of a clinical mri ppt,

[-]
Quick Reply
Message
Type your reply to this message here.


Image Verification
Image Verification
(case insensitive)
Please enter the text within the image on the left in to the text box below. This process is used to prevent automated posts.

Possibly Related Threads...
Thread: Author Replies: Views: Last Post
  Magnetic refrigeration Seminar Report seminar code 0 35 30-08-2014 11:12 AM
Last Post: seminar code
  Isoloop magnetic couplers report seminar projects maker 0 98 04-06-2014 04:04 PM
Last Post: seminar projects maker
  Stereoscopic Imaging REPORT seminar post 0 67 04-06-2014 11:23 AM
Last Post: seminar post
  Non Visible Imaging seminar post 0 56 02-06-2014 04:32 PM
Last Post: seminar post
  Surface Plasmon Resonance seminar post 0 49 02-06-2014 03:43 PM
Last Post: seminar post
  Advances in Magnetic Field Sensors : Seminar Report and PPT seminar projects maker 0 119 02-06-2014 12:41 PM
Last Post: seminar projects maker
  Antennas on Metamaterial Substrates as Emitting Components for THz Biomedical Imaging alicejoe 0 87 17-03-2014 06:46 PM
Last Post: alicejoe
  A Novel Magnetic Nickel Mold Combined Nano-Particle Fluid Electromagnetism Imprinting alicejoe 0 91 17-03-2014 06:41 PM
Last Post: alicejoe
  Report on Magnetic random access memory (MRAM) study tips 0 312 02-08-2013 04:09 PM
Last Post: study tips
  Video/Imaging Fixed-Point Digital Signal Processor pdf study tips 0 350 20-06-2013 04:36 PM
Last Post: study tips
This Page May Contain What is Magnetic Resonance Imaging (MRI) ppt And Latest Information/News About Magnetic Resonance Imaging (MRI) ppt,If Not ...Use Search to get more info about Magnetic Resonance Imaging (MRI) ppt Or Ask Here

Options: