API documentation can be found HERE under 'Technical Information' > 'Media Types'
Heart
1) location:UpperRightThorax
2) location:UpperLeftThorax
3) location:CenterThorax
4) location:LowerLeftThorax
Lungs
1) location:UpperMidRightThorax
2) location:UpperMidLeftThorax
3) location:LowerOuterRightThorax
4) location:LowerOuterLeftThorax
5) location:LowerSideRightThorax
6) location:LowerSideLeftThorax
Abdomen
1) location:UpperRightAbdomen
2) location:UpperLeftAbdomen
3) location:LowerRightAbdomen
4) location:LowerLeftAbdomen