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physics
atomic structure
radiation in medicine
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Created by
salome s
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Cards (22)
What is radiotherapy used for?
To treat
cancer
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What are medical tracers used for?
To
detect
problems inside the body
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What type of radiation can damage cells?
Ionizing radiation
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How does ionizing radiation affect DNA?
It can
mutate
our DNA
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What happens if cells receive a large enough dose of radiation?
They
can
be
killed
off
completely
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What is radiation sickness?
Illness
from
large doses
of
radiation
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What are the symptoms of radiation sickness?
Vomiting,
tiredness
, and
hair loss
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How can radiation be used positively in medicine?
To destroy
unwanted
cells like
cancer cells
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What is the process called that uses radiation to treat cancer?
Radiotherapy
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What are the two main methods of delivering radiation in radiotherapy?
Externally
and
internally
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What type of radiation is typically used in external radiotherapy?
Gamma rays
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How is internal radiotherapy administered?
By placing a
radioactive
source inside the body
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What type of radiation is usually used in internal radiotherapy?
Beta radiation
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What is a downside of radiotherapy?
Healthy cells can also be
damaged
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How do medical tracers work?
By tracking
radioactive isotopes
in the body
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How can radioactive isotopes be introduced into the body?
By
injection
or
ingestion
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Why do we use gamma rays for medical tracers?
They are less harmful than
alpha
or
beta
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What is the preferred half-life for isotopes used in medical tracers?
As short as
possible
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What is the risk-benefit analysis in using radiation?
Weighing
risks
against
benefits
of
radiation
use
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Why is it generally worth the risk to use medical tracers?
They help diagnose
diseases
effectively
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Why might some patients refuse radiotherapy?
If it only extends life
briefly
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What should you do if you found the video useful?
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