[Phase-contrast x-ray imaging with x-ray interferometer for medical applications].
Phase-contrast x-ray imaging with x-ray interferometer can depict the minute difference within the biological object, and its sensitivity is about 1000 times higher than that of absorption-contrast method. For biomedical use of this technique, a large monolithic x-ray interferometer and 2 crystal interferometer having a field of view with 25 mm x 25 mm is being developed. Phase-contrast x-ray CT could reveal detail structures within tumor and surrounded tissue, and the vessel imaging of rat liver is also possible using physiological saline at 17.7 keV x-ray energy. Recently, human breast tissues were imaged at 35 keV and the contrast of image was much better than usual absorption contrast x-ray image obtained at 17.7 keV energy.
Takeda
Tohoru
T
Institute of Clinical Medicine, University of Tsukuba, Japan. ttakeda@md.tsukuba.ac.jp
Yoneyama
Akio
A
Momose
Atsushi
A
Wu
Jin
J
Zeniya
Tsutomu
T
Lwin
Thet-Thet
TT
Tsuchiya
Yoshinori
Y
Rao
Donepudi V
DV
Hyodo
Kazuyuki
K
Hirano
Keiichi
K
Aiyoshi
Yuji
Y
Itai
Yuji
Y
D000818:Animals; D006801:Humans; D008327:Mammography / Q000295:instrumentation / Q000379:methods; D011829:Radiation Dosage; D011856:Radiographic Image Enhancement / Q000295:instrumentation* / Q000379:methods; D051381:Rats; D014057:Tomography, X-Ray Computed / Q000295:instrumentation / Q000379:methods