川村 愼二 先生のプレゼンテーションに興味を持ったら以下をチェック! ☆川村 愼二 先生の800字講義一覧 【がんの放射線治療における照射技術について】 …
Everybody here has probably heard of radiation.
But how much do you know about radiation?
Radiation is being used in various ways in our daily lives.
For example, there’s the radioactive dating method using carbon 14.
Gamma irradiation is used on potatoes for sprout inhibition.
Radiation is also used in non-destructive testing to check for fractures in a product.
As you all know, X-ray machines are used to check luggage before boarding a plane.
X-rays from black holes and other stellar sources have led to a great leap forward in astronomy.
Radiation is also used to sterilize medical equipment.
I guess most of you here has had an X-ray taken.
Radiation is used in medical care as well.
I myself specialize in radiological therapy technology.
I would like to explain how radiation is used in medicine.
Radiation is used in three areas of medicine: diagnostic imaging, nuclear medicine and radiation therapy.
Use of radiation in diagnostic imaging includes X-ray photos,
which are taken, for example, when you fracture a bone.
A CT-scan, which creates cross-sectional images of the body, is another example of radiation use in diagnosis.
In nuclear medicine,
radioisotopes that give off radiation are administered internally for diagnostic procedures,
such as to examine bone metabolism and liver function, and to locate cancer.
Then, there’s radiotherapy.
The study on the use of radiation in cancer therapy
began immediately after Wilhelm Roentgen discovered X-rays.
What do you think is necessary when performing radiation therapy?
First you need to understand the characteristics of radiation.
You also need to find out where the cancer is located.
Then you must be able to accurately irradiate the cancerous cells.
You must also calculate the effect irradiation will have on the human body.
You must accurately measure the radiation dose.
You must protect non-cancerous cells and tissue from radiation.
You need to do all these things, each of which is related to the following disciplines: radiation physics,
radiological testing technology,
radiological therapy technology,
radiation biology,
radiation metrology,
and radiation protection.
In the process of working to become a radiological technologist,
you will be studying a wide range of disciplines.
Please remember that pursuing radiation therapy technology will enable you to save cancer patients.

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