A 24 keV liquid-metal-jet x-ray source for biomedical applications.
Rev Sci Instrum
; 82(12): 123701, 2011 Dec.
Article
in En
| MEDLINE
| ID: mdl-22225218
ABSTRACT
We present a high-brightness 24-keV electron-impact microfocus x-ray source based on continuous operation of a heated liquid-indium/gallium-jet anode. The 30-70 W electron beam is magnetically focused onto the jet, producing a circular 7-13 µm full width half maximum x-ray spot. The measured spectral brightness at the 24.2 keV In K(α) line is 3 × 10(9) photons∕(s × mm(2) × mrad(2) × 0.1% BW) at 30 W electron-beam power. The high photon energy compared to existing liquid-metal-jet sources increases the penetration depth and allows imaging of thicker samples. The applicability of the source in the biomedical field is demonstrated by high-resolution imaging of a mammography phantom and a phase-contrast angiography phantom.
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Diagnostic Imaging
/
Gallium
/
Indium
Type of study:
Diagnostic_studies
Language:
En
Journal:
Rev Sci Instrum
Year:
2011
Document type:
Article
Affiliation country:
Suecia