Frank Gaillard on Radiopaedia.org

Frank Gaillard ◉ ◈

MBBS, MMed, FRANZCR, Hon. FRCR

Associate Professor Frank Gaillard is the Founder and Editor in Chief of Radiopaedia.org, which he began in December 2005. He is also a neuroradiologist at the University of Melbourne Department of Radiology of the Royal Melbourne Hospital in Australia.

In 2021, in recognition of his contribution to radiology education, he was made an Honorary Fellow of the Royal College of Radiologists (UK).

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40 results found

Question 1789

In the setting of ischemic strokes, the return of DWI signal to normal after early reperfusion (i.e. within 3 to 6 hours of onset) is occasionally encountered and is known as...

Question 464

What is the approximate expected apparent diffusion coefficient (ADC; x 10^-6 mm²/s) of cerebral spinal fluid (CSF)?

Question 463

What is the approximate expected apparent diffusion coefficient (ADC; x 10^-6 mm²/s) of normal white matter?

Question 711

Which of the following panels in the accompanying collage of axial MRI images of the brain demonstrates a T2 weighted sequence?

Question 710

Which of the following panels in the accompanying collage of axial MRI images of the brain demonstrates a diffusion weighted sequence (DWI)?

Question 709

Which of the following panels in the accompanying collage of axial MRI images of the brain demonstrates a time of flight MRA sequence?

Question 708

Which of the following panels in the accompanying collage of axial MRI images of the brain demonstrates a susceptibility weighted sequence (SWI)?

Question 707

Which of the following panels in the accompanying collage of axial MRI images of the brain demonstrates a FLAIR sequence?

Question 706

Which of the following panels in the accompanying collage of axial MRI images of the brain demonstrates a T1 weighted sequence?

Question 460

If you were to review the apparent diffusion coefficient (ADC) maps of the adjacent study, what values (measured in units x 10^-6 mm²/s) would you expect to encounter in the area of abnormality?

Question 1684

The accompanying diagram best depicts which phenomenon?

Question 2263

What MRI artefact is demonstrated in the accompanying post-contrast T1-weighted fast spin echo image?

Question 1003

On the phase images of susceptibility weighted scans, the signal intensity of a small cerebral developmental venous anomalies will...

Question 1419

When assessing for the presence of small hemorrhagic lesions (such as microhemorrhages or cavernomas) which of the following sequences is most sensitive?

Question 2260

Intracranial epidermoid cysts demonstrate diffusion restriction (on apparent diffusion coefficient - ADC) ...

Question 2255

k-trans in MRI perfusion is a measure of...

Question 2254

Dynamic susceptibility contrast (DSC) MR perfusion relies on...

Question 2253

Which of the following is NOT an MRI perfusion technique?

Question 771

The accompanying image demonstrates which MRI artifact?

Question 768

What is the name of this MRI artifact?

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