| Budget Amount *help |
¥19,110,000 (Direct Cost: ¥14,700,000、Indirect Cost: ¥4,410,000)
Fiscal Year 2012: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
Fiscal Year 2011: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2010: ¥10,270,000 (Direct Cost: ¥7,900,000、Indirect Cost: ¥2,370,000)
Fiscal Year 2009: ¥2,080,000 (Direct Cost: ¥1,600,000、Indirect Cost: ¥480,000)
Fiscal Year 2008: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
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| Research Abstract |
We irradiated a rotating target with two metallic plates made of different elements by a MeV proton beam, and alternately produced quasi-monochromatic pulsed X-rays with two different energies: one was lower and the other was higher than the absorption-edge energy of the contrast medium. A cineradiograph of a phantom containing contrast medium was taken using these pulsed X-rays. A moving image which emphasized only the contrast medium was reconstructed by taking the difference between the adjacent frames. From this result, we found that the contrast-medium concentration and the X-ray dose for cineangiography could be reduced by applying this method.
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