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| 1 | Bone mineral density in cone beam computed tomography:Only a few shades of gray显示文摘Cone beam computed tomography(CBCT) has often been used to determine the quality of craniofacial bone structures through the determination of mineral density, which is based on gray scales of the images obtained. However, there is no consensus regarding the accuracy of the determination of the gray scales in these exams. This study aims to provide a literature review concerning the reliability of CBCT to determine bone mineral density. The gray values obtained with CBCT show a linear relationship with the attenuation coefficients of the materials, Hounsfield Units values obtained with medical computed tomography, and density values from dual energy X-ray absorciometry. However, errors are expected when CBCT images are used to define the quality of the scanned structures be-cause these images show inconsistencies and arbitrari-ness in the gray values, particularly when related to abrupt change in the density of the object, X-ray beam hardening effect, scattered radiation, projection data discontinuity-related effect, differences between CBCTdevices, changes in the volume of the field of view(FOV), and changes in the relationships of size and position between the FOV and the object evaluated. A few methods of mathematical correction of the gray scales in CBCT have been proposed; however, they do not generate consistent values that are independent of the devices and their configurations or of the scanned objects. Thus, CBCT should not be considered the ex-amination of choice for the determination of bone and soft tissue mineral density at the current stage, par-ticularly when values obtained are to be compared to predetermined standard values. Comparisons between symmetrically positioned structures inside the FOV and in relation to the exomass of the object, as it occurs with the right and left sides of the skull, seem to be viable because the effects on the gray scale in the re-gions of interest are the same. | Marcio José da Silva Campos Thainara Salgueiro de Souza Sergio Luiz Mota Júnior Marcelo Reis Fraga Robert Willer Farinazzo Vitral | 2014 | World Journal of Radiology2014，6，8： | 3 |
| 2 | Insertional tagging of regulatory sequences in tritordeum,a hexaploid cereal species显示文摘 | Salgueiro S Matthes M Gil J | 2002 | Theor Appl Genet2002，104，67： | 1 |
| 3 | Coagulation of indigo blue present in dying wastewater using a residual bittern显示文摘 | ALBUQUERQUE L F SALGUEIRO A A MELO J L D S | | 0，，： | 1 |
| 4 | Coagulation of indigo blue presem in dyeing wastewater using a residual bittern显示文摘 | ALBUQUERQUE L F SALGUEIRO A A MELO J L d S | 2013 | Separation and Purification Technology2013，104，： | 1 |
| 5 | Zinc as an essential micronutrient:A review显示文摘 | Maria J Salgueiro Marcela Zubillaga Alexis Lysionek | 2000 | Nutrition Research2000，20，5： | 1 |
| 6 | Neonatal cerebral hypoxia-ischemia causes lateralized memory impairments in the adult rat显示文摘 | Arteni NS Salgueiro J Torres I | | 0，，2： | 1 |
| 7 | Neonatal cerebral hypoxia ischemia causes lat- eralized memo-impairments in the adult rat 显示文摘 | Arteni NS Salgueiro J | 2003 | Brain Research2003，973，2： | 1 |
| 8 | Intron-mediated gusA expre, ssion in tritordeum and wheat resulting from particle bombard- ment 显示文摘 | Salgueiro S Piguocchi C Parry M A J | 2000 | Plant Molecular Biology2000，42，4： | 1 |
| 9 | In vivo iron and zinc deficiency disminished T and B selective mitogen stimulation of murine lymphoid cells through protein kinase C mediated mechaism显示文摘 | Klecha AJ Salgueiro J Wald M | 2005 | Boil Trace Elem Res2005，104，2： | 1 |
| 10 | Intron-mediated gus A expression in tritordeum and wheat resulting from particle bombardment 显示文摘 | Salgueiro S Pignoeehi C Parry M A J | 2000 | Plant Mol Biol2000，42，： | 1 |
| 11 | Neonatal cerebral hypoxia-ischemia causes lateralized memory impairments in the adult rat显示文摘 | Arteni NS Salgueiro J Torres I | 2003 | Brain Res2003，973，2： | 1 |
| 12 | Neonatal cerebral hypoxia-ischemia causes lateralized memory impairments in the adult rat显示文摘 | Arteni NS Salgueiro J Torres I Achaval M Netto C | 2003 | Brain Res2003，973，2： | 1 |
| 13 | Zinc as essential micronutrient: a review 显示文摘 | Salgueiro M J Zubillaga M Lysionek A | 2000 | Nutr Res2000，20，： | 1 |
| 14 | In vivo iron and zinc deficiency diminished T-and B-selectivemitogen stimulation of murine lymphoid cells through protein kinase C-mediated mechanism显示文摘 | Klecha A J Salgueiro J Wald M | 2005 | Biol Trace Elera Res2005，104，2： | 1 |
| 15 | The role of zinc in the growth and development of children显示文摘 | Maria J Salgueiro BS Marcela B Zubillaga Alexis E Lysionek BS | 2002 | Nutrition2002，18，： | 1 |
| 16 | Insertional tagging of regulatory sequences in tritordeum; a hexaploid cereal species显示文摘 | Salgueiro S Matthes M Gil J | | 0，，6： | 1 |
| 17 | Study of industial microencapsulated ferrous sulfate by means of the prophylactic- preventive method to determine its bioavailability显示文摘 | Lysionek A E ZubiUaga M B Salgueiro M J | 2000 | Journal of Nutritional Science and Vitaminology2000，46，： | 1 |
| 18 | Intron-mediated gusA expression in tritordeum and wheat resulting from particle bombardment显示文摘 | Salgueiro S Piguocchi C Parry M A J | 2000 | Plant Molecular Biology2000，42，4： | 1 |
| 19 | Second-harmonic generation in vortex-induced waveguides显示文摘 | Salgueiro J R Carlsson A H Ostrovskaya E | 2004 | Optics Letters2004，29，6： | 1 |
| 20 | Insertional tagging of regulatory sequences in tritordeum;a hexaploid cereal species显示文摘 | Salgueiro S Matthes M Gil J Steele S Savazzini F Riley A Jones H D Lazzeri P A Barcelo P | 2002 | Theor apple Genet2002，104，： | 1 |
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