Health Dictionary
Reliable, easy-to-read patient information on common medical conditions — written in plain language, free of jargon, and grounded in current evidence. Browse the most frequent diagnoses, understand what they mean for everyday life, and learn which steps and questions help you have a focused conversation with your doctor.
Patent foramen ovale MRI
Introduction
Overview
Overview
Although not commmon, contrast-enhanced MRI is may be helpful in diagnosing patent foramen ovale. PFO is diagnosed with the presence of an early contrast enhancement in the left atrium due to intracardiac right-to-left shunting before the contrast agent reaches the pulmonary veins.
MRI
MRI
- Contrast-enhanced MRI is not commonly used but may be helpful in the diagnosis of patent foramen ovale. The presence of an early contrast enhancement due to intracardiac right-to-left shunting in the left atrium before the contrast agent reaches the pulmonary veins is diagnostic of patent foramen ovale.[1]
- Grading of PFO using contrast-enhanced MRI include:[1]
- Grade 0: No contrast enhancement in the left atrium before the contrast agent reached the pulmonary veins.
- Grade 1: Only slight contrast enhancement close to the atrial septum without enhancement of the entire left atrium before the contrast agent reached the pulmonary veins.
- Grade 2: Only slight contrast enhancement in the left atrium before the contrast agent reached the pulmonary veins.
- Grade 3: Bright contrast enhancement in the left atrium before the contrast agent reached the pulmonary veins.
References
References
- ↑ 1.0 1.1 Mohrs, Oliver K.; Petersen, Steffen E.; Erkapic, Damir; Rubel, Christine; Schräder, Rainer; Nowak, Bernd; Fach, W. Andreas; Kauczor, Hans-Ulrich; Voigtlaender, Thomas (2005). “Diagnosis of Patent Foramen Ovale Using Contrast-Enhanced Dynamic MRI: A Pilot Study”. American Journal of Roentgenology. 184 (1): 234–240. doi:10.2214/ajr.184.1.01840234. ISSN 0361-803X.
Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editors-In-Chief: Ifeoma Odukwe, M.D. [2], Priyamvada Singh, M.B.B.S. [3], Kristin Feeney, B.S. [4]