Welcome to our presentation
Huynh Trong An
Ngo Trung
Nguyen Hoang Phi Yen
Tran Huu Loc
Proton therapy
Outline

Definition
History
Mechanism
Applications
Others

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1. Definition
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What is proton therapy?
Proton therapy is a type of particle therapy which uses a beam of protons to irradiate diseased tissue, most often in the treatment of cancer
2. History
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1941, Robert R. Wilson suggested that energetic protons could be an effective treatment method.
1954-1957, the first treatment was performed at Berkeley Radiation Laboratory
1961, Harvard Cyclotron Lab and Massachusetts General Hospital pursue proton therapy
By 2010, these facilities were joined by an additional seven regional hospital-based proton therapy centers in the United States alone, and many more worldwide.
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3. Mechanism
The New York Times and University of Florida Proton Therapy Institute
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Cyclotron and synchrotron accelerators
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Both the cyclotron and synchrotron are type of particle accelerators
And both are used as a particle source
for high-energy collisions
Cyclotron
Synchrotron
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But they each use different designs to accelerate particles.
However, they bot reply on two principles,
electricity and magnetism.
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Cyclotron
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Synchrotron
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How can the proton therapy damage tumor?
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PROTON BEAM
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4. Applications
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The chief advantage of proton therapy
Same tumor killing properties as X-rays
Decreased dose to normal tissues, side effects and complications
Treating tumors close to critical organs
Increasing the safe dose delivered to tumors, cure rates
Ability to re-treat tumors after recurrences
General example.
Brain tumors and inoperable brain lesions
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Tumors near the optic apparatus
Pediatric tumors (to reduce the risk of secondary malignancies, and to avoid the irradiation of growth plates)
Comparison with other treatment options
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5. Others
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Cost
For treatment
around £90,000 per person
$34,000 for eight weeks (medicare) 
For proton therapy machine:
 $144 million to build
a cyclotron--220 tons
100-ton motorized gantry spins
Treatment centers
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5.3. Sum up
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