Give 3 examples why Primovist was used instead of other contrasts. - answer✔- For imaging
liver conditions.
- Taken up by hepatocytes and equally excreted by renal and biliary in humans
- Liver tumours
Liver Cysts
Malignant and benign liver lesions
What is MRI spectroscopy? - answer✔Uses gradients to selectively excite a small volume of
tissue and produces a spectrum from that voxel instead of an image.
What does a stroke appear as in spectoscopy? - answer✔-Cell death: lactate peak
-reduced NAA
-elevated choline
What is the process you would go through for a patient presenting with dysphasia? -
answer✔Dysphasia is problem talking - consider a stroke protocol:
W0 is the rate of proton precession
Y = Gyromagnetic field (constant)
B0= Magnetic field strength
What is the radio of strength of a tesla as a magnetic field? - answer✔
Artifact images - answer✔
Knee pathology - answer✔
What is an additional sequence you would run on a pituitary? - answer✔Dynamic imaging taken
1 min apart. Post contrast series with fat sat band.
What sequence would you run on a pituitary - answer✔Positioning same for brain, IV contrast,
Small FOV
Thin collimation
Scan time (Dynamic)
Vascular flow causes artifacts so use pre saturation bands
What are the best planes for pituitary ? - answer✔Coronal & Sagittal
What is a typical brain sequence? - answer✔T1 axial brain
T2 axial brain
flair axial brain
difffusion axial brain
T2/T1 sagittal brain
The human body is mostly made of __ - answer✔H20
When would we use contrast? - answer✔If trying to assess a tumour or multiple sclerosis.
Need to know Cranial nerves V, VII, VIII - answer✔
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