and Marco Rengo1
(1)
Department of Radiological Sciences, Oncology and Pathology, Sapienza University of Rome-Polo Pontino, Latina, Italy
(2)
Department of Radiology and Radiological Sciences, Medical University of South Carolina, Charleston, SC, USA
Wall Motion Score Index
Sum of wall motion scores divided by the number of segmented scored.
Wall motion score: (1) normokinesis (50 % thickening); (2) hypokinesis; (3) akinesis; (4) dyskinesis.
Used before and after stress in dobutamine stress MR.
Warfarin Ridge
Ridge between left atrial appendage and left upper pulmonary artery which can be misinterpreted as thrombus if prominent.
Characteristics: elongated structure in continuity with left atrial wall.
Waterston Shunt
Ascending aorta to right pulmonary anastomosis.
Surgical technique used in pulmonary atresia repair.
Alternative to subclavian artery to pulmonary artery anastomosis (Blalock–Taussig shunt).
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