Imaging

Question 1

What is an x ray

Answer 1

electromagnetic packet of energy with a extremely short wavelength between 0.1 and 10 nm

Question 2

how are x rays generated and how do they capture an image

Answer 2

stream of X rays in a machine, capture on film emulsion because emulsion contains silver halide so clumps form after exposure to light generated on luminescent screens

Question 3

how are x rays generated and how do they capture an image

Answer 3

stream of X rays in a machine,

Question 4

CT

Answer 4

rotating x ray tube, give iodinated contrast, axial image, can cause renal impairment if overexposed, used for trauma, cancer staging and response to treatment, guidance for procedures

Question 5

ultrasound

Answer 5

high frequency sound pulses sent out then bounce back, can work through fluid, works cannot work through air

Question 6

fluoroscopy

Answer 6

digital x ray. monitor moves along body and x ray flows continuously to create an image. shows movement of internal organs

Question 7

why is iodinated contrast media used

Answer 7

enhances the visibility of vascular structures and organs. good for cancer

Question 8

MRI

Answer 8

very detailed, non ionising radiation