The<unk>  is defined by the presence of akinesia of the mid-free wall but normal apical motion of the right ventricle on echocardiography.  The sensitivity and specificity of the<unk>  for the diagnosis of acute pulmonary embolism are 77% and 94% respectively.
McConnell sign
Westermark sign
Becker sign
Lincoln sign
Sherman sign
Quincke sign
Hill sign
Lighthouse sign