Mobile terminal apparatus with display unit

A mobile terminal apparatus comprising:

• an image storage device for storing at least first and second image groups, each of said first and second image groups including a plurality of diagnostic images;
• a display unit for displaying one of said diagnostic images read from said image storage device;
• an orientation sensor for detecting first and second motion modes of said display unit with a difference in movement from one another;
• and
• a display control unit for display control of said display unit by sending an image signal thereto, and for changing over said image signal according to an output of said orientation sensor,
• wherein assuming that said display unit is moved in said first motion mode while a first diagnostic image included in said first image group is displayed on said display unit, then said display control unit carries out changeover to display a second diagnostic image being included in said first image group and different from said first diagnostic image, and assuming that said display unit is moved in said second motion mode while said first diagnostic image is displayed on said display unit, then said display control unit carries out changeover to display a third diagnostic image included in said second image group.