Radiation image detecting device and operating method thereof

A radiation image detecting device comprising:

• a radiation detector for detecting a radiation;
• and
• an emission start judgment unit for performing a first judgment process for judging whether or not radiation emission has been started based on a level of a dose signal outputted from the radiation detector, and for making the radiation detector perform an accumulation operation of a signal charge and performing a second judgment process after performing the first judgment process, the second judgment process judging whether or not a result of the first judgment process is correct based on the level of the dose signal, a signal value of the dose signal in the second judgment process being larger than that in the first judgment process,
• wherein in case where the second judgment process judges that the result of the first judgment process is not correct, the accumulation operation is interrupted and an accumulated signal charge is reset.

An method of operating a radiation image detecting device including:

• a radiation detector for detecting a radiation;
• and
• an emission start judgment unit for performing a first judgment process for judging whether or not radiation emission has been started based on a level of a dose signal outputted from the radiation detector, and for making the radiation detector perform an accumulation operation of a signal charge and performing a second judgment process after performing the first judgment process, the second judgment process judging whether or not a result of the first judgment process is correct based on the level of the dose signal, a signal value of the dose signal in the second judgment process being larger than that in the first judgment process,
• the method comprising the steps of:
• continuing the accumulation operation in case where the second judgment process judges that the result of the first judgment process is correct;
• and
• interrupting the accumulation operation and resetting an accumulated signal charge in case where the second judgment process judges that the result of the first judgment process is not correct.