Imaging Circulatory Disturbances Flashcards
describe vascular ultrasound
it is a noninvasive ultrasound method used to examine the circulation in the blood vessels of the body
what can vascular ultrasound be used to evaluate
arteries or veins in nearly any part of the body, including blood vessels in the neck, abdomen, arms and legs
state 4 anatomical vascular imaging methods
plain films contrast angiography ultrasound CT MRI
describe angiography
uses 1 of 3 imaging technologies, in most cases a contrast material injection is needed to produce pictures of blood vessels in the body, angiography is performed using X rays with catheters and CT scanning
state 3 functional vascular imaging methods
radionuclide imaging
MRI functional imaging
ultrasound
state 3 ideal properties of a man-made contrast agent in radiology
inert
painless
easy to use
state 6 problems with iodinated contrast
major reactions renal dysfunction disturbance of thyroid metabolism disturbance of clotting seizures pulmonary oedema
describe catheter angiography
a catheter is inserted into an artery through a small incision in the skin, once the catheter is guided to the area being examined, a contract material is injected through the tube and images are captured using X rays
describe angioplasty
surgical repair or unblocking of a blood vessel, especially a coronary artery
describe stenting
a stent is a small mesh tube that is used to treat narrow or weak arteries, a stent is placed in an artery as part of a procedure called coronary angioplasty
state angioplasty complications
allergic reactions to iodine based dye arrhythmias bleeding at the insertion site heart attack stroke infection at the insertion site kidney failure ruptured artery
state 5 problems associated with angioplasty
occlusion dissection embolisation rupture infection
describe radionuclide imaging
a radionuclide scan is a nuclear medicine examination
a minute amount of radioactive material is labelled to commonly found substances in the body such as iodine or phosphate - as those radioactive substances go to their normal positions in the body, images of bones, thyroid tissue and other organs are created
describe scintigraphy
scintigraphy is a technique in which a scintillation counter or similar detector is used with a radioactive tracer to obtain an image of a bodily organ or a record of its functioning
describe a CT angiogram
it is a test that uses X-rays to provide detailed pictures of the heart and the blood vessels that go to the heart, lung, brain, kidneys, head, neck, legs and arms
