Investigations Flashcards
What is the doppler used for?
recording audio signals
What is the value of a COLORED DUPLEX?
Info about
- vessel lumen: stenosis, occlusion, or aneurysm
- vessel wall: calcification, atherosclerotic plaques
- hemodynamic information: blood flow, volume, & velocity
- evaluation of venous disorders: DVT & varicose veins
What is the disadvantage of the colored duplex?
only diagnostic
Colored duplex is the initial investigation for what?
- vascular malformation
- ischemia
- vascular injury
What is the most accurate method to identify a diseased segment in an artery? and when is it used?
Arteriography
only in severe conditions when intervention is needed
What are the 2 types of venography?
ascending: venous obstruction
descending: valvular insufficiency
In which investigation do we inject Gadolinium contrast and take an MRI of the stained blood vessels?
MR angiography
What are the disadvantages of MR angiography?
claustrophobia
metallic implants
time consuming
What is the most efficient investigation to confirm a peripheral aneurysm and what are the types that could be found?
Color duplex (can detect size and shape and thrombus)
true: popliteal
false: femoral
What is the most common site for a true aneurysm? at what level?
abdominal aorta
infra-renal abdominal aorta
What is the disadvantage of an abdominal US?
doesn’t delineate adjacent structures
Which investigation can delineate the surrounding tissue in an abdominal aneurysm?
CT or MRI
What is the investigation of choice for DVT?
Duplex
What is the investigation of choice in iliac and naval obstruction
MR venography
