Time of Flight Magnetic Resonance Angiography: A Trap for the Unwary
Received 15 December 2009; accepted 17 January 2010. published online 25 February 2010.
Refers to article:
Time of Flight Magnetic Resonance Angiography: A Trap for the Unwary
, 22 February 2010
L. Corfield, A. Speirs, D.J. McCormack, M. Waltham
European Journal of Vascular & Endovascular Surgery
May 2010 (Vol. 39, Issue 5, Page 659) Full Text |
Full-Text PDF (76 KB)
Abstract
Introduction
Magnetic resonance imaging is now frequently used to image blood vessels. This case illustrates a pitfall of this mode of imaging.
Report
A 6-year-old girl sustained a severe neck injury and subsequently developed a Horner's syndrome. A time-of-flight magnetic resonance scan could be interpreted by the inexperienced as showing an extensive dissection. However, a contrast-enhanced scan confirmed the presence of a localised carotid injury only.
Discussion
Time-of-flight magnetic resonance scanning produces flow voids which can mimic dissection, particularly in high velocity vessels such as the carotid artery. This case is a reminder that whatever imaging modality is used, correct interpretation is essential.
ABSTRACT