Ch 1 and 2 Flashcards
x-rays are electrically (charged/neutral)
neutral
x-rays have ___________ beams and travel in _______
heterogeneous, straight
another word for highly reactive free molecules
free radicals
what is diagnostic efficacy?
the degree to which the diagnostic study accurately reveals the presence or absence of disease in the patient
diagnostic efficacy: the degree to which the ____________ accurately reveals _______________ in the patient
diagnostic study, the presence or absence of disease
Image Gently pertains to _______; Image Wisely pertains to ________
pediatrics, adults
three types of radiation quantities
exposure, absorbed dose, effective dose
what does ORP stand for? what is it synonymous for?
optimization for radiation protection; ALARA
exposure is the amount of ______________ when ionizing radiation is present
ionization produced in air
absorbed dose is amount of __________ that is deposited in a ____________________
energy, material per unit mass of the material
effective dose is the best overall measure of the ________________________
biologic effects of ionizing radiation
exposure is measured in
C/kg; mR
absorbed dose is measured in
mGy
effective dose is measured in
mSv
what does BERT stand for?
background equivalent radiation time
BERT
-(does/does not) imply radiation risk
-emphasizes radiation as ______________
-easy for patient to comprehend
-does not
-an innate part of our environment
What is Pause and Pulse?
a campaign for fluoroscopy in pediatrics
Alliance for Radiation Safety in Pediatric Imaging was initiated in _____, which created __________ in ___
2007, Image Gently, 2008
Image Gently was founded by ________; in what year?
Alliance for Radiation Safety in Pediatric Imaging, 2008
Image Wisely was founded by __________; in what year?
American College of Radiology (ACR), Radiological Society of North America (RSNA); 2009
NEXT stands for
Nationwide Evaluation of X-rays Trends
NEXT pertains to ______________
reference values of patient dose
types of ionizing radiation
x-rays, gamma rays, high energy ultraviolet radiation
types of nonionizing radiation
ultraviolet radiation, visible light, infrared rays, microwaves, radio waves
full range of frequencies and wavelengths of electromagnetic waves
electromagnetic spectrum
changes in blood count are an example of
organ damage
how much average yearly dose from all sources? How is this sub-divided
5.5 mSv
3.1 mSv medical
2.3 mSv background
0.1 mSv human-made radiation
types of particulate radiation
alpha, beta, neutrons, protons
