4-chamber view is visualized in different positions of the spine. In anterior spine position (IMA1), 4-ch view is little compromised. With spine being posterior (IMA2), 4-ch view is nicely seen, however, position is not correct as more than on rib plane visible. In spine lateral view (IMA 3), with one rib plane visible, 4 chamber view is correctly depicted as seen in labelled image (IMA4)
As we move cranially from 4-chamber view, we get to see aortic origin, with visible aortic valve in it. It is also called 5-chamber view by some radiologists.