Flashcards in Radiology Deck (10):
Imaging Modalities used to view the heart? (6)
3 advantages of x-rays and 2 disadvantages
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Cardiothoracic ratio (CTR)?
The ratio of the maximum diameter of the heart divided by the maximum diameter of the diaphragm
What should the normal CTR be?
Less than or equal to 50%
When is heart size exaggerated on CXRs?
When the AP projection is poorly inspired rotated
Advantages (4) and disadvantages (5) of angiography?
Excellent coronary arterial depiction
assess coronary plaques/ stenosis
Assess stents/ CABGs
May need admissions
Contrast allergy/ nephropathy
Advantages (5) and disadvantages (3) of Echocardiography?
Functional assessment of the heart
Incomplete cardiac assessment
Advantages (5) and Disadvantages (4) of Cardiac CT following IV contrast?
excellent cardiac anatomy depiction
Non-invasive coronary artery assessment
Look at vessels and lungs
Resolution still slightly less than catheter angiography
Potential for contrast allergy/ nephropathy
Need special CT equipment/ expertise
Cardiac MRI advantages (5) and disadvantages (5)
Excellent soft tissue resolution
Long imaging times
Need special MRI equipment / expertise
Not very useful for coronary arteries at present