Radiation Biology
Nuclear Medicine
Ultrasound Physics
MRI physics
Random Physics
Pediatric MSK
Pediatric Neuro
Phakomatoses
100
TERM: the dose required to double the spontaneous mutation rate when applied to a population.
Doubling Dose
100
two protons and two neutrons
alpha particle
100
A measure of relative intensity between two sound intensities
Decibel
100
Which sequence has a short TR and a short TE
T1
100
Collimation does what to scatter and dose?
Decreases
100
most common carpal coalition
lunotriquetral
100
grade III germinal matrix hemorrhage
ventricular extension with ventriculomegaly
100
optic nerve glioma
NF1
200
The Fetal Dose limit
0.5 mSV/ month (5 mSV a pregnancy)
200
In this kind of decay, a proton is converted to a neutron
beta plus decay
200
apparent bending of the ultrasound wave.
refraction
200
Which sequence has a long TR and a long TE
T2
200
increasing kv will do what to dose?
Decrease!
200
hyperostosis of the mandible scapula and clavicle
caffey disease
200
polymicrogyria associated infection
CMV
200
subependymal giant cell astrocytoma
TS
300
the most radiosensitive tissue in the human body.
Thyroid gland
300
This term means to have the same number of neutrons
Isotones
300
the maximum temperature rise in tissue caused by ultrasound energy absorption.
Thermal index
300
Which sequence has a long TR and a Short TE
Proton Density
300
1 rad is equal to how many milligray?
10
300
wimberger rim sign - epiphyseal sclerosis
scurvy
300
MC absent region of agenesis of corpus callosum
splenium
300
Joubert
400
What does LD 50/80 mean?
lethal dose that will kill 50% of people in 80 days
400
this type of decay occurs with neutron excess, neutron is converted to proton
beta minus decay
400
transducer thickness=?/2
lambda or wavelength
400
When an MRI magnet is quenched, what element is released?
Helium
400
In mammography, magnification = ?
SID/SOD
400
most common LCH lesion
Skull lytic lesion
400
septo optic dysplasia associated brain malformation
schizencephaly
400
sturge weber
500
These are radiation effects that are random and carcinogenic and arise after a latent period of several years.
Stochastic effects
500
the total number of nuclear decays that occur over time.
cumulative activity
500
the ability to resolve two adjacent objects.
lateral resolution
500
What contrast material typically used in MRI is contraindicated with pregnancy?
Gad
500
Typical dose of a PA and lateral chest x ray
0.1 msv
500
H shaped vertebral body and splenomegaly
gaucher
500
ocular malformation, muscular dystrophy and type II lissencephaly
walker walburg syndrome
500
endolymphatic sac tumor of VHL