human 183 Humans 153 Article 143 X ray diffraction 138 diagnostic imaging 101 x-ray computed tomography 101 Scanning electron microscopy 97 Technology: general issues 92 male 89 controlled study 82 female 81 Tomography, X-Ray Computed 79 adult 68 Fourier transform infrared spectroscopy 67 Male 67 procedures 67 Research & information: general 66 History of engineering and technology 64 Female 63 chemistry 60 X ray photoelectron spectroscopy 49 computer assisted tomography 42 clinical article 41 micro-computed tomography 41 X-Ray Microtomography 39 Adult 37 middle aged 37 nonhuman 36 scanning electron microscopy 35 aged 34