Figure 2From: High cardiac background activity limits 99mTc-MIBI radioguided surgery in aortopulmonary window parathyroid adenomas Aortopulmonary window adenoma before resection (patient #1). Aortic arch under the pledget. P = Parathyroid adenoma, 1 = Left brachiocephalic vein and vena cava, 2 = Brachiocephalic trunc, 3 = Opened pericardium.Back to article page