Title :
High magnification imaging with a laser-based hard X-ray source
Author :
Yu, J. ; Jiang, Z. ; Kieffer, J.C. ; Krol, A.
Author_Institution :
INRS Energie et Mater., Univ. du Quebec, Varennes, Que., Canada
Abstract :
The usefulness of laser-based X-ray sources for imaging is assessed. A very bright point source of 20-keV X-rays, with a diameter of 10 μm, has been created by the interaction of a high contrast femtosecond laser pulse with solid targets. This X-ray source has been used for a feasibility study of high magnification imaging. Images of mammography phantoms have been obtained and spatial resolution of 35 μm has been demonstrated with object magnification up to ten. A new laser technology recently introduced allows the construction of very intense, compact and cost effective short pulse laser systems and makes now the ultrafast laser based hard X-ray sources very attractive for medical application
Keywords :
diagnostic radiography; laser applications in medicine; mammography; 10 mum; 20 keV; high contrast femtosecond laser pulse; high magnification imaging; laser technology; laser-based hard X-ray source; mammography phantoms; medical application; object magnification; solid targets; spatial resolution; ultrafast laser based hard X-ray sources; very bright point source; very intense compact cost effective short pulse laser systems; Costs; High-resolution imaging; Imaging phantoms; Mammography; Optical imaging; Optical pulses; Solid lasers; Spatial resolution; X-ray imaging; X-ray lasers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.796310
