A device is provided herein for locating a breast of a female patient. In one embodiment, the locating device is adapted to be inserted into an opening within a patient table. The locating device is further adapted with different sizes and shapes, and thus, can be adapted to various breast shapes. In one embodiment, the device is provided with an RFID transponder for identifying the particular locating device being used. The RFID transponder enables data about the locating device to be automatically recorded along with the image data. This enables the shape of the locating device to be taken into account when evaluating an image. Furthermore, the RFID transponder ensures that a locating device of the same shape is used for subsequent exposures of a patient's breast, so that the exposures remain comparable.