Radiation and Nuclear Physics

8/2/2019 Radiation and Nuclear Physics

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Radiation And NuclearPhysics

Muhammad Harith bin Abdul MalikD20091034906


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RADIATION IN MEDICAL

StereotacticRadiosurgery(SRS)andStereotacticBody

Radiotherapy(SBRT)


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Stereotactic Radiosurgery(SRS) and Stereotactic

Body Radiotherapy (SBRT)What is stereotactic radiosurgeryand how is it used?

What equipment is used?

Who will be involved in thisprocedure and who operates theequipment?


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radiosurgery and how is itused?

Stereotactic radiosurgery (SRS) is ahighly precise form of radiation therapyinitially used to treat tumors and otherabnormalities of the brain. Now theprinciples developed for cranial SRS arealso being used to treat cancer in other

parts of the body in a procedure calledstereotactic body radiotherapy (SBRT).

Despite its name, SRS is a non-surgicalprocedure that delivers precisely-tar eted radiation at much hi her doses


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SRS and SBRT rely on severaltechnologies:

three-dimensional imaging andlocalization techniques that determinethe exact coordinates of the targetwithin the body

systems to immobilize and carefully

position the patient

highly focused gamma-ray or x-raybeams that converge on a tumor or

abnormality


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Stereotactic radiosurgery and SBRT areimportant alternatives to invasive surgery,

especially for patients who are unable toundergo surgery and for tumors andabnormalities that are:

hard to reach

located close to vital organs

subject to movement within the body


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What equipment is used?

Gamma Knife

Linear accelerator (LINAC)

Proton beam or heavy-charged-particle radiosurgery

G K if


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Gamma Knife

Gamma Knife radiosurgery involves

four phases:

placement of the head frame,

imaging of the tumor location,

computerized dose planning,

radiation delivery.


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procedure and whooperates the equipment?

The treatment team is comprised ofa number of specialized medical

professionals, typically including aradiation oncologist,

medical radiation physicist,

dosimetrist, radiation therapist,

radiation therapy nurse.


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a w ee ur ng anafter the procedure?

Radiosurgery treatments are similarto having an x-ray. In general you

will not be able to see, feel or hearthe x-rays. One exception is thatsome patients who are havingtreatments to the brain may see

flashes of light while the machine ison, even with their eyes closed.

There is no pain or discomfort from

the actual treatment.


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The end..

Radiation and Nuclear Physics

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