CHEM FALL 2026 EXAM 1
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16 Terms
MRI
Non-ionizing method, uses the principle that cancer cells have a different water content than normal cells
Ultrasound
measure fetal development, uses sounds waves
PET Scan
uses radioactive substances to see metabolic processes in the body
PET Scan isotopes
O-15, N-13, or C-11
CT Scan
uses a computer to interpret a large number of x-rays to get a 3 dimensional picture
X-Ray
used to detect broken bones, solution of BaSO4 is given in order to see digestive tract
What is I-131 used for?
thyroid tumors
what is Xe-133 used for?
lung tumors
Thallium-201 us used for?
coronary blockages
What particle has the most penetrating ability?
gamma ray
what particle does the most damage inside the body?
alpha
what particle is detected when using radioisotopes for diagnostic purposes?
gamma
What type of radiation is emitted from a nucleus when the mass # decreases by one, and the atomic number decreases by one?
positron, proton
What type of radiation is emitted from a nucleus when the mass # decreases by one, and the atomic number stays the same.
neutron
What type of radiation is emitted from a nucleus when the mass # stays the same and the atomic number increases by one?
beta
what is produced when a positron collides with an electron
gamma