Time-Resolved MR Angiography For Pulmonary Embolism: Preliminary Results
Ersoy H, Rosebrook J, Skorstad R, Goldhaber S, Cai T, Rybicki F
Brigham and Women's Hospital
The 3D pulmonary Gd-MRA has high accuracy in the diagnosis of pulmonary embolism (PE). However, routine implementation has been limited by technical and practical factors such as venous contamination and the need of high spatial resolution to evaluate small arterial segments. In 15 consecutive patients with suspected PE, 3D TRICKS MRA provided high temporal resolution (9 phases, 1 phase / 3.5 sec) pulmonary arterial only imaging. The high spatial resolution of the technique enabled confident diagnosis of PE through the segmental branches. Inter-rater image quality agreement was very good for lobar arteries (kw=0.85) and good for segmental arteries (kw=0.77).