Image modalities Flashcards
1
Q
Limits of conventional CT?
A
High dose
Noise
Limited soft tissue appreciation
Streak artefacts from metallic objects
2
Q
Complications of MRI?
A
Increase size of T wave on ECG
Tattoos can heat up
Visual disturbances
Dislodge surgical clips/forgein bodies (pace maker)
3
Q
Ultrasound saftey?
A
Non ionising so safer than x-rays
Local heating- cell membrane permeability may be affected
Cavitation - can get microbubbles produced
