From: Transcranial doppler ultrasonography should it be the first choice for persistent foramen ovale screening?
SHUNT
TEE (N= 220 pts – TEE and TCD positive)
TCD (N= 220 pts – TEE and TCD positive)
% of the same grading using both methods
Small
56 (25.5%)
70 (31.8%)
62.1
Medium
123 (55.9%)
119 (54.1%)
68.3
Large
41 (18.6%)
31 (14.1%)
83.2