First experiments on diffraction-enhanced imaging at LNLS.
Diffraction-enhanced images have been obtained using two silicon crystals in a non-dispersive set-up at the XRD2 beamline at the Brazilian Synchrotron Light Laboratory (LNLS). A first asymmetrically cut silicon crystal using the (333) reflection vertically expanded the monochromated beam from 1 mm to 20 mm allowing the imaging of the whole sample without movements. A symmetrically cut Si(333) second crystal was used as a Bragg analyzer. Images of biological samples including human tissue were recorded using a direct-conversion CCD detector resulting in enhancement of the contrast compared with absorption-contrast images.
Giles
C
C
Instituto de Física, Universidade Estadual de Campinas, SP, Brazil. giles@ifi.unicamp.br
Hönnicke
M G
MG
Lopes
R T
RT
Rocha
H S
HS
Gonçalves
O D
OD
Mazzaro
I
I
Cusatis
C
C
D001938:Brazil; D003481:Cuspid / Q000000981:diagnostic imaging*; D005240:Feasibility Studies; D006801:Humans; D007047:Hysterosalpingography / Q000379:methods*; D008168:Lung / Q000000981:diagnostic imaging; D010865:Pilot Projects; D018515:Plant Leaves / Q000033:anatomy & histology; D011856:Radiographic Image Enhancement / Q000295:instrumentation* / Q000379:methods*; D017356:Synchrotrons; D014197:Trees / Q000033:anatomy & histology; D014397:Tuberculosis, Pulmonary / Q000000981:diagnostic imaging*; D014961:X-Ray Diffraction / Q000295:instrumentation* / Q000379:methods*