Physics of radiation therapy, Physics

Assignment Help:

Physics of radiation therapy


The probability  of  your  having cancer during your lifetime is about 1 out of 4 .Currently three major methods are used alone or in combination to treat cancer:

Surgery, radiation therapy  and drugs (chemotherapy).


The success of radiation therapy depends on :
1-    The type and extent of cancer.
2-    The skill of radiotherapist.
3-    The physician who specialized in the treatment.
4-    The kind of radiation used in the treatment.
5-    The accuracy with which the radiation is administered to the tumor.
But because of the possibility of radiation –induced cancer ,it is generally safer to use other types of treatment when possible.

The dose units used in radiotherapy:

  Erythema dose: The quantity of  x-ray that caused a reddening of the skin.
  Rontgen: A unit based on ionization in air (only for x-ray and gamma ray).
  Rad: is defined as 100 ergs/g ,that is a radiation beam that gives 100 ergs of energy to 1 gm of tissue gives  the tissue an absorbed dose of 1 rad.
  Gray(Gy): it is the international (SI) unit of dose
    1Gy=1J/kg       since J=107 erg
     Gy =100 rad


Related Discussions:- Physics of radiation therapy

Refraction - ripple tank , In a ripple tank two regions A and B can be crea...

In a ripple tank two regions A and B can be created by introducing a pile of glass plates in region B. Thus region B is a shallow water region while region A is a deep water re

Define the diatomic molecules in two dimensions, Define the Diatomic Molecu...

Define the Diatomic Molecules in Two Dimensions? You have been transported to a two-dimensional world by an evil wizard who refuses to let you revisit to your beloved Columbia

gravity, what is newton law of gravitation

what is newton law of gravitation?

Angular and tangential acceleration, 1. Consider the centripetal accelerati...

1. Consider the centripetal acceleration due to the earth's spin for a CWRU student sitting in Strosacker auditorium. [The radius of the earth is R = 6378.1 km, Cleveland's lati

Electromagnetic induction, how to prepare a working model on electromagneti...

how to prepare a working model on electromagnetic induction?

Work out the voltage, Work out the  voltage for the following arrangement ...

Work out the  voltage for the following arrangement of 1.5V cells: ( Solve problems with cells in series, parallel and series-parallel)

Electrostatics, the two point charges +10 nano coulomb and -20 nano coulomb...

the two point charges +10 nano coulomb and -20 nano coulomb are seperated by a distance 0.1m. calculate the neutral point along the line joining of two charges

What is the change in temperature, What is the change in temperature of 2.2...

What is the change in temperature of 2.2 kg of the following substances if 8.5 x 10 3 J of thermal energy is added to each of the substances? a.  ice b.  Water c.  Alumi

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd