...you just expect random readers to know how lung looks on (i assume) MRI, from (I assume) top ? I'd also assume it would be simple to spot just because the i

...you just expect random readers to know how lung looks on (i assume) MRI, from (I assume) top ? I'd also assume it would be simple to spot just because the image is always took from the same direction so the narrow part points out to front/back of the patient