PHYS 250 assignments questions &
answers
electromagnetic radiation first used in radiography that diagnoses
patients by recording images of internal body parts without
surgery - answer X-rays
highly energetic and used for cancer/tumour treatment - answer
gamma ray
views organs, tissues, bones, and other structures inside the body
without radiation - answer MRI
less harmful than ionizing radiation - answer ultrasound
ionizing radiation. can cause cancer or damage DNA with higher
exposure - answer x-ray
more ionizing than x-rays and can damahe cells/DNSA with
specific exposure - answer gamma-rays
very expensive - answer MRI conb
image quality is not very clear - answer ultrasound con
,gamma rays - answer most energetic type of imaging
gamma rays - answer medical imaging with shortest wavelength
electromagnetic - answer what type of radiation are radio waves
sound waves - answer what type of waves are used in ultrasound
- high atomic number
- high melting point
- high thermal conductivity - answer what are the advantages of a
tungsten target (3)
Z=74 - answer tungsten atomic number
3400C - answer tungsten melting point
x-rays are atomic phenomena and gamma rays are nuclear
phenomena - answer why cant you produce gamma rays by
increasing the electron speed in an x-ray tube
by decelerating incoming electrons or transitions between two
electrons in different shells - answer how are x-rays produced
, by nuclear decay - answer how are gamma rays produced
Z number (bottom left) is the same - answer isotope
N number (sum of Z and A) is the same - answer isotone
A number (top right) is the same - answer isobar
atomic number (number of protons) (bottom left) - answer Z
number
sum of Z (bottom left) and A (top right) - answer N number
top right - answer A number
Higher binding energy means lower energy nucleus means more
stable - answer how does binding energy relate to stability
the fraction of photons removed from a monoenergetic beam of x-
rays or y-rays per unit thickness of material - answer what is the
linear attenuation coefficient
inverse centimeters (cm^-1) - answer how is the linear
attenuation coefficient typically expressed
answers
electromagnetic radiation first used in radiography that diagnoses
patients by recording images of internal body parts without
surgery - answer X-rays
highly energetic and used for cancer/tumour treatment - answer
gamma ray
views organs, tissues, bones, and other structures inside the body
without radiation - answer MRI
less harmful than ionizing radiation - answer ultrasound
ionizing radiation. can cause cancer or damage DNA with higher
exposure - answer x-ray
more ionizing than x-rays and can damahe cells/DNSA with
specific exposure - answer gamma-rays
very expensive - answer MRI conb
image quality is not very clear - answer ultrasound con
,gamma rays - answer most energetic type of imaging
gamma rays - answer medical imaging with shortest wavelength
electromagnetic - answer what type of radiation are radio waves
sound waves - answer what type of waves are used in ultrasound
- high atomic number
- high melting point
- high thermal conductivity - answer what are the advantages of a
tungsten target (3)
Z=74 - answer tungsten atomic number
3400C - answer tungsten melting point
x-rays are atomic phenomena and gamma rays are nuclear
phenomena - answer why cant you produce gamma rays by
increasing the electron speed in an x-ray tube
by decelerating incoming electrons or transitions between two
electrons in different shells - answer how are x-rays produced
, by nuclear decay - answer how are gamma rays produced
Z number (bottom left) is the same - answer isotope
N number (sum of Z and A) is the same - answer isotone
A number (top right) is the same - answer isobar
atomic number (number of protons) (bottom left) - answer Z
number
sum of Z (bottom left) and A (top right) - answer N number
top right - answer A number
Higher binding energy means lower energy nucleus means more
stable - answer how does binding energy relate to stability
the fraction of photons removed from a monoenergetic beam of x-
rays or y-rays per unit thickness of material - answer what is the
linear attenuation coefficient
inverse centimeters (cm^-1) - answer how is the linear
attenuation coefficient typically expressed
