Cavalier King Charles 2 Years Thorax Sagittal

Be careful! The patients of this breed tend to increase their weight over time. The abdomen tends to protrude and displaces cranially the cardiac silhouette, giving the impression of a straighter caudal cardiac margin.
Cavalier King Charles 2 Years Thorax Sx

There is a moderate degree of rotation in this image. Sorry!
Cavalier King Charles 2 Years Thorax Dx

Look at the caudal margin of the cardiac silhouette: when the left atrium enlarges, the cardiac margin became straight, and it extends dorsally.
Maltese 2 Years Thorax Sagittal

There is a moderate degree of rotation in the VD image. The sternum is not perfectly aligned with the thoracic spine. Sorry!
Maltese 2 Years Thorax Sx

The cutest Maltese ever!
Maltese 2 Years Thorax Dx

Rarely it is possible to obtain a nearly perfectly straight image. The patient was so still!