A system having an X-radiation generator; an X-radiation detector, and a portable computing device. The X-radiation detector has a first wireless communication module, and a non-volatile memory. The X-radiation detector is configured to self-trigger acquisition of an X-radiation image upon detecting X-radiation generated by the X-radiation generator, store the acquired X-radiation image in the non-volatile memory, transmit a lower-resolution version of the X-radiation image via the first wireless communication module, and transmit the X-radiation image to a server via the first wireless communication module. The portable computing device has a second wireless communication module, and a digital screen. The portable computing device is configured to receive the lower-resolution version of the X-radiation image via said second wireless communication module that communicates with said first wireless communication module, display the lower-resolution version of the X-radiation image on the digital screen, enable a user to select whether to discard the X-radiation image from the X-radiation detector or to transmit the X-radiation image from said X-radiation detector to the server, and responsive to the user selecting to transmit the X-radiation image to the server, cause the X-radiation detector to transmit the X-radiation image to the server.