Download Invention and Purpose

DIAGNOSTIC
TECHNOLOGIES
Manjot, Robyn, Nigel, Atia, Maansi
How are
Diagnostic
Technologies
Used?
MRI technology is used by using magnetic fields
to cause the magnetic fields of Hydrogen atoms
to line up in the same directions the outer
magnetic field.
A radio transmitter releases different radio
waves.
A scanner detects the changes in the spectrum
of radio waves, resulting in an image.
Invention
and
Purpose
• Who made it?
• Invented by Raymond Vahan Damadian
– Got idea while using NMR to scan salt loving
bacteria called “Halophiles”
– Devised own method of scanning human
body
– 1st MRI: 1977; scanning thorax
What is it used for?
• Scanning body to produce body structure images
to detect injuries, diseases, illness, etc.
Advantages:
• There is virtually no risk to patients who receive
an MRI scan because it does not involve any
radiation
• Today's scanning techniques can produce
extremely clear three-dimensional images
• Non invasive way to view organs, tissues,
bones and other structures inside the body
• Scans soft tissues:
– Muscles, brain, and internal organs
Disadvantages
of Diagnostic
Technologies:
• Radiation concerns
1. X-rays damage DNA itself.
2. Only exposed to low levels of radiation,
known as a risk for cancer.
3. Cannot perform CAT scans on pregnant
women; unsafe for the baby
4. No risk in MRI
Benefits outweigh risks
How has it
helped
today's
society
• Diagnostic technology has positively impacted today’s
society. Patients who receive X-ray or CAT scans face
an increased risk of cancer due to the low levels of
exposure to radiation. However, through the use of a
diagnostic technology called magnetic resonance
imaging (MRI), patients no longer face those risks since
MRI scans do not use ionizing radiation.