title: Visualization and detectability of elements rarely contained in soft tissue by X-ray scanning analytical microscopy and electron-probe micro analysis.
abstract: The detectability of elements rarely contained in soft tissue was compared using X-ray scanning analytical microscope (XSAM) and electron-probe micro analysis (EPMA). Mapping images of Ca, S and P in normal soft tissue of the rat and dissolved Ni in Ni implanted soft tissue could be obtained by XSAM and EPMA. EPMA was more sensitive in detection of P, while XSAM was superior for Ca, S and Ni mapping. The high detectability for heavier elements by XSAM was explained by the large volume of characteristic X-ray generation in XSAM and low attenuation of the characteristic X-rays from heavier elements. XSAM could provide clearer mapping images for heavier elements whose concentration was low without radiation damage to specimens.
authors.affiliation: Department of Dental Materials and Engineering, School of Dentistry, Hokkaido University, Sapporo-shi, Japan. uo@den.hokudai.ac.jp
authors.forename: M
authors.initials: M
authors.lastname: Uo
authors.forename: F
authors.initials: F
authors.lastname: Watari
authors.forename: A
authors.initials: A
authors.lastname: Yokoyama
authors.forename: H
authors.initials: H
authors.lastname: Matsuno
authors.forename: T
authors.initials: T
authors.lastname: Kawasaki
mesh_terms: D000818:Animals; D002118:Calcium / Q000032:analysis*; D003238:Connective Tissue / Q000737:chemistry*; D004577:Electron Probe Microanalysis / Q000379:methods*; D010758:Phosphorus / Q000032:analysis*; D051381:Rats; D012680:Sensitivity and Specificity; D013455:Sulfur / Q000032:analysis*
chemical_list: D010758:Phosphorus; D013455:Sulfur; D002118:Calcium