Abstract
The ability of phase-contrast x-ray imaging to depict blood vessels without contrast agents was tested by observing livers of a mouse and a rat with synchrotron x rays. Livers were excised by tying arteries and veins to prevent blood from flowing out of the liver. An x-ray interferometer was used to obtain x-ray phase contrast. With the technique of phase-shifting x-ray interferometry, the image mapping x-ray phase shift caused by a liver was measured. The x-ray phase shift caused by blood was substantially different from that caused by other soft tissues; consequently, trees of blood vessels were revealed on the image. Vessels with diameter smaller than 0.1 mm were recognized. This result allows new possibilities for investigation of the vascular system.
Original language | English |
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Pages (from-to) | 593-596 |
Number of pages | 4 |
Journal | Radiology |
Volume | 217 |
Issue number | 2 |
DOIs | |
Publication status | Published - 2000 |
Externally published | Yes |
Keywords
- Blood vessels
- Raiography, phase contrast
- Synchrotron
ASJC Scopus subject areas
- Radiology Nuclear Medicine and imaging