Imaging of Circulatory Disturbances Flashcards

1
Q

What questions are you asking in vascular imaging?

A

Where is the anatomy?
Is there a leak?
Is there a blockage? (is the occlusion / stenosis important?)
Can it be fixed?

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2
Q

Imaging that looks at anatomy

A

Plain films
Contrast angiography
USS
CT/MRI

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3
Q

Imaging that looks at function

A

Radionucleotide imaging
MRI functional imaging
USS

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4
Q

Problems with iodinated contrast

A
Major reactions
Renal dysfunction 
Disturbance of thyroid metabolism 
Disturbance of clotting
Seizures
Pulmonary oedema
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5
Q

How does catheter angiography work?

A

Vessel punctured and catheterised
Sterile procedure
Contrast injected using pump injector
Images acquired

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6
Q

When to use angioplasty?

A

Short stenosis or occlusions

Sessile / concentric plaques

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7
Q

What negative contrast agent is useful in patients with poor renal function or sensitivity to iodinated contrast agents?

A

CO2

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8
Q

Problems with angioplasty

A
Occlusion 
Dissection 
Embolisation 
Rupture
Infection
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9
Q

Major reactions of contrast reactions

A

Allergy
Asthma
Death

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10
Q

What does CTA stand for?

A

Computed tomography angiogram

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11
Q

Normal vein on USS

A

Low pressure

Compressible

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12
Q

DVT on USS

A

Full of thrombus and NOT compressible

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13
Q

What is radionucleotide imaging used for?

A

Perfusion
Blood loss
Perfusion of transplant kidneys
Blood loss in GI tract

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14
Q

What scan is done to look at PE?

A

V/Q scan

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15
Q

What does MRA stand for?

A

Magnetic resonance Angiography

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16
Q

Definition of consent

A

A process in which a patient learns key facts about an investigation/treatment, including potential risks and benefits, before deciding wether or not to proceed