X-ray Phase Contrast Imaging
1) New Path to Better X-ray Breast Cancer Imaging - on new developments in phase contrast x-ray imaging for IEEE Spectrum on May 21, 2014
A new X-ray-generating chip will reduce the radiation from medical imaging
Enter a technique called X-ray phase-contrast imaging (XPCI), in which instead of measuring the X-ray’s intensity, you measure the change in an X-ray’s phase. X-rays move slower when they pass through muscle mass than through blood, for instance. So a chest X-ray wave front that passes through a lung sac (mostly air and blood vessels) will arrive sooner than a wave front that passes through the heart.
XPCI can therefore image not just bones and cartilage but also internal organs, internal bleeding, tumors, and plenty more. Moreover, XPCI involves no toxic contrast agents and a substantially lower X-ray dosage.