An X-ray inspection system comprising a solid-state image pickup apparatus (1A, 1B) supported by a swing arm, the solid state image pickup apparatus comprising: where M and N are each an integer not less than 2, M 1 is an integer less than M, m is an integer not less than 1 and not more than M, and n is an integer not less than 1 and not more than N, a photodetecting section (10A, 10B) having M×N pixel units P 1,1 to P M,N two-dimensionally arranged in M rows and N columns, each of the pixel units including a photodiode and a readout switch connected with the photodiode, the photodiode generating charges corresponding to an intensity of an incident light, a readout wiring L O,n connected with a readout switch of each of the M pixel units P 1,n to P M,n of an n-th column in the photodetecting section, for reading out charges generated in the photodiode of any pixel unit of the M pixel units P 1,n to P M,n via the readout switch of the pixel unit; a signal readout section connected with each of the readout wirings L O,1 to L O,N, for holding a voltage value according to an amount of charges input through the readout wiring L O,n, and sequentially outputting the held voltage values; a controlling section (40A, 40B) that controls an opening and closing operation of the readout switch of each of the M×N pixel units P 1,1 to P M,N in the photodetecting section (10A, 10B) and controls an output operation of a voltage value in the signal readout section to make a voltage value according to an amount of charges generated in the photodiode of each of the M×N pixel units P 1,1 to P M,N in the photodetecting section be output from the signal readout section, wherein the controlling section (40A, 40B) when in a first imaging mode, makes a voltage value according to an amount of charges generated in the photodiode of each of the MxN pixel units P 1,1 to P M,N in the photodetecting section be output from the signal readout section whereas the number of rows M is larger than the number of columns N, and when in a second imaging mode, makes a voltage value according to an amount of charges generated in the photodiode of each pixel unit P m,n included in a specific range of consecutive M 1 rows in the photodetecting section (10A, 10B) be output from the signal readout section whereas the number of columns N is larger than the number of consecutive M 1 rows; characterized in that the swing arm swings the image pickup apparatus (1A, 1B) in a swing plane; and wherein the solid state image pickup apparatus (1A, 1B) is disposed so that a longitudinal direction of the specific range in the light receiving section (10A, 10B) when in the second imaging mode is vertical to the swing plane; and wherein the controlling section, when in the second imaging mode, has as the specific range, a range of consecutive M 1 rows counted in order from the row closest to the signal readout section out of the M rows in the photodetecting section, and makes a voltage value according to the amount of charges generated in the photodiode of each pixel unit P M,N in the specific range be output from the signal readout section. the controlling section (40A, 40B) when in a first imaging mode, makes a voltage value according to an amount of charges generated in the photodiode of each of the MxN pixel units P 1,1 to P M,N in the photodetecting section be output from the signal readout section whereas the number of rows M is larger than the number of columns N, and when in a second imaging mode, makes a voltage value according to an amount of charges generated in the photodiode of each pixel unit P m,n included in a specific range of consecutive M 1 rows in the photodetecting section (10A, 10B) be output from the signal readout section whereas the number of columns N is larger than the number of consecutive M 1 rows; characterized in that the swing arm swings the image pickup apparatus (1A, 1B) in a swing plane; and wherein the solid state image pickup apparatus (1A, 1B) is disposed so that a longitudinal direction of the specific range in the light receiving section (10A, 10B) when in the second imaging mode is vertical to the swing plane; and wherein the controlling section, when in the second imaging mode, has as the specific range, a range of consecutive M 1 rows counted in order from the row closest to the signal readout section out of the M rows in the photodetecting section, and makes a voltage value according to the amount of charges generated in the photodiode of each pixel unit P M,N in the specific range be output from the signal readout section.