A portable ultrasound imaging apparatus is provided, being operable when used in hand-held mode, and capable of performing operations such as starting and ending actions easily, even during an examination. The portable ultrasound imaging apparatus has a display panel 30 and an operation panel 20 on the front surface of a main body 10 that incorporates an electronic circuit constituting an ultrasound imager, and a handle on the back surface, and the apparatus is provided with operating portions 81 and 82 on the back surface, separated from the operation panel 20. The operating portion 81 may be provided on the handle 60, for instance, and while performing examination with holding the apparatus main body via the handle 60, the operating portion on the back surface is manipulated to implement functions such as starting and ending the imaging.
