CT Pulmonary Angiography > Systematic Approach > Left Lung > Left Upper Lobe

Left Upper Lobe

1,2. Apicoposterior (A1+2) (Fig 5a,b,c,d,e) -- From the superior apex of the mediastinal left pulmonary artery (LPA), find superiorly oriented branch(es) -> A1+2a, A1+2b; A1+2c may arise as a separate branch or in a common origin

3. Anterior (A3) (Fig 5a,b,d,e) -- From the anterior aspect of the mediastinal LPA, find anteriorly oriented branch(es) -> A3a, A3b, A3c

 

   

4. Superior lingular (A4) (Fig 6b,d,e) -- From the anterior aspect of the left interlobar artery, find an anteriorly oriented branch which courses to the superior lingula -> A4a, A4b

5. Inferior lingular (A5) (Fig 6c,d,e) -- From the anterior aspect of the left interlobar artery, find anteriorly oriented branch which