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Timeline

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by

Annie Vincent

on 8 September 2015

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Transcript of Timeline

1950
1990
PET Scan Timeline

1950
Dr David E. Kuhl presents
an idea of positron Emission Tomography (PET Scan)
1961
Dr James Townsend develops
first single-plane PET scanner.

1962
1st multiple detector positron
device was invented.

1970
PET scanner introduced to
medical field.
1977
1st whole body
PET scanner.
1980
Technology advances allowed
higher resolution creating
precise and clearer images.

2000
Dr Ron Nutt and David
Townsend are the inventors
of the complete PET scanner
used today.

2000
PET scanner named
Invention of the Year
by Time Magazine
By Ann Mary Vincent
PET SCAN
FIRST PET SCANNERS
small number of radiation sensors to build image
Only once slice at a time - very thick
Low quality and definition
Impossible to get finer details - localization of brain functions
Clinical usefulness limited compared to modern models
MODERN PET SCANNERS
Easy to install and operate
New Capabilities - advantage perform feats brain imaging
More radiation sensors
High speed obtaining images
2-64 slice models
2,000,000 PET scans annually
High Costs - $850 - $4,000
FUTURE PET SCANNERS
HOW DOES IT WORK?
Time Consuming
Injections - Allergy, Pain, Redness
Patient Discomfort - claustrophobic, which may mean sedation is required
Exposure to ionizing electromagnetic radiation (Gamma-rays)
Patient can undergo this procedure only a limited amount of times
Risks & Disadvantages
Advantages
Detects, Diagnoses & Treats Disease, Cancer, Brain Abnormalities & Other Conditions in its early stages
Prevents Further Damage
Avoid
carrying out a
risky biopsy
Entire Body Image of Skeletal System
Shows Chemical Organ and Tissue Functionality
Measure Blood Flow, Glucose Metabolism & Oxygen Flow
Check Treatment Process & Effectiveness
Radiation is short-lived - quickly discharges out of body
This figure shows evolution of image quality from the PET scanner, available in 1975 to the most sophisticated model.
Evolution of PET Scanners
Hand Held
Device
Results
sent via wifi
to doctors in other places
256 slices per continuous rotation
Reduced cost
- less materials
More accessible
- low cost
Improved patient comfort
Increased

gamma rays/radiation impact
Smaller PET scanner
Portable
Positron Emission Tomography
Produces 3-dimensional images to see structure and functions of certain body parts using nuclear medicine imaging (gamma rays).

3-dimensional images advantage to doctors - allows greater analysis and understanding of diagnosis.

View the exact size and location, monitor and diagnose tumors, blow flow to the heart, brain disorders, epilepsy and Alzheimer's disease

Can see fine details of brain and other organs and the effectiveness of the treatment by viewing pre and post treatment scans.
How has it impacted healthcare?
Case Study : Brain Tumour
PET scan has changed healthcare by:
Increasing life expectancy
Increasing understanding of body function
Increasing cancer treating chances compared to 100 years ago

Projected number of new cancer cases diagnosed in 2015
126,800 = 69,790 males + 57,010 females


-
46,570
cancer victims will
die


PET scan can immensely influence these people's lives by detecting and diagnosing cancer from its early stages
29 year old healthy patient
29 year old patient with brain tumour
Full transcript