A graduate of University College Dublin, Dr Brennan completed his radiology SpR training at St James’s Hospital in 2010. He completed fellowships in both abdominal imaging and intervention and vascular and interventional radiology at Beth Israel Deaconess Medical Center (BIDMC) in Boston, USA.

In 2012, he was subsequently appointed as an attending (consultant) radiologist with a special interest in interventional radiology at BIDMC and also an instructor in radiology at Harvard Medical School.

Interests include all aspects of procedural radiology, body imaging and medical education.

Currently, Dr Brennan is the Honorary Secretary of the Irish Society of Interventional Radiology.