Disclosed herein are an a medical imaging apparatus capable of easily detecting the location of specific tissue, for example, a lymph node, and a method of providing medical images. The medical image providing method includes: arranging and displaying n thumbnail images (310c, 320c, 330c, 340c) for n first photoacoustic images (310b, 320b, 330b, 340b) acquired by initially scanning an object, wherein n is a natural number and enhancing a thumbnail image that is identical to a second photoacoustic image (350b) acquired by secondarily scanning the object, among the n thumbnail images.
