Patent ID: 8866091

Claim:
A method of acquiring images created by penetration of a radioactive ray, the method comprising: receiving an irradiated radioactive ray; generating a light signal in response to the received radioactive ray; changing an advancing direction of the generated light signal; receiving the light signal whose advancing direction is changed to convert the received light signal into an electrical signal; and acquiring an image corresponding to the irradiated radioactive ray based on the converted electrical signal, wherein the light signal is generated and the advancing direction of the generated light signal is changed using a scintillator, wherein the scintillator includes a medium having a density different from a density of the surrounding air, wherein a side surface of the scintillator adjacent to a light receiving unit is formed into a concave shape, the concave shape being laterally asymmetrical with respect to a location of the light receiving unit, wherein the light signal from the scintillator enters another medium different from the medium of the scintillator before entering the light receiving unit, and wherein converting the received light signal into the electrical signal and acquiring the image are performed using at least one processor.