1. An ultrasound diagnosis apparatus that includes an ultrasound probe that transmits and receives ultrasound waves to and from a subject, and generates and displays images based on reception results from the ultrasound probe, comprising: a memory that stores association information indicating association of a diagnosis region of the subject with at least one examination condition comprising at least one of image quality conditions, and an application used for diagnosis of the diagnosis region; a probe position sensor configured to obtain position information of the probe on a surface of the subject; a detector configured to detect one diagnosis region based on the obtained position information of the ultrasound probe; a user interface configured to input body-type information of the subject; and processing circuity configured to select, from a plurality of possible examination conditions, at least one examination condition associated with the at least one diagnosis region detected by the detector based on the association information stored in said memory, and configured to perform the transmission and reception waves and the image generation based on the selected at least one examination condition, and wherein the association information includes: first association information that associates positions in the real space with coordinates in a subject coordinate system set for the subject; and second association information that associates each of a plurality of diagnosis regions in the standard coordinate system with the examination conditions, and wherein the processing circuitry identifies coordinates in the standard coordinate system corresponding to the position detected by the detector based on the first association information and the input body-type information, and selects examination conditions corresponding to the region in the standard coordinate system containing the identified coordinates based on the second association information.