**5.2 Utilized ICT system**

In most countries, such a medical ICT system has been developed with Picture Archiving and Communication System and enterprise communication in teleradiology fields.

We have already installed the teleradiology system (View Send ICT, Tokyo) between Japan and Laos (**Figure 3**). The definition of a network with built security complied with the Japanese Ministry of Health, Labour and Welfare "Guidelines for Security Management of Medical Information Systems" using Virtual Private Network encryption. We designed a system that does not cause information leakage. Under these research conditions, we conducted clinical research on dental imaging.
