Title :
Image quality analysis for dual energy subtraction imaging with a femtosecond laser-based hard X-ray source
Author :
Ichalalene, Zahia ; Jiang, Zhiming ; Kieffer, Jean-Claude ; Dorchies, F. ; Krol, A. ; Chamberlain, C.C.
Author_Institution :
Telobs Corp., Que., Canada
Abstract :
We present a study of image quality for dual energy subtraction imaging using an iodinated contrast agent and a femtosecond laser-based hard X-ray source. The INRS CPA laser (400 fs pulse focused on solid targets in a 3 μm spot at 4 × 1018 W cm-2) was used to create a bright hard X-ray source (conversion efficiency of 10-5 in the characteristic K∝ line emission, 12 μm X-ray source diameter). A model of image quality has been developed and been benchmarked with specific experiments using specially made angiography phantoms
Keywords :
X-ray production; angiocardiography; bremsstrahlung; diagnostic radiography; medical image processing; 400 fs; Gaunt factor; angiography phantoms; bright source; continuous bremsstrahlung; digital subtraction angiography; dual energy subtraction imaging; femtosecond laser-based hard X-Ray sources; femtosecond laser-produced plasmas; image quality; iodinated contrast agent; medical imaging; Angiography; Image analysis; Image converters; Image quality; Imaging phantoms; Optical imaging; Optical pulses; Solid lasers; X-ray imaging; X-ray lasers;
Journal_Title :
Selected Topics in Quantum Electronics, IEEE Journal of
DOI :
10.1109/2944.983293
