Margaret Tzaphlidou

Summary

Affiliation: University of Ioannina
Country: Greece

Publications

  1. ncbi request reprint Diameter distributions of collagenous tissues in relation to sex. A quantitative ultrastructural study
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, P O Box 1186, 45110, Ioannina, Greece
    Micron 32:333-6. 2001
  2. ncbi request reprint High resolution Ca/P maps of bone architecture in 3D synchrotron radiation microtomographic images
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, PO Box 1186, 45110 Ioannina, Greece
    Appl Radiat Isot 62:569-75. 2005
  3. ncbi request reprint Bone calcium, phosphorus detection by Auger electron spectroscopy
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, P O Box 1186, 45110 Ioannina, Greece
    Micron 36:706-9. 2005
  4. ncbi request reprint Development of a reliable and low-cost system for the study of EMF biological effects
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, 45110 Ioannina, Greece
    ScientificWorldJournal 4:100-4. 2004
  5. ncbi request reprint The effects of 910-MHz electromagnetic field on rat cranial arachnoid and dura mater collagen. The axial periodicity of collagen fibrils
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, 45110 Ioannina, Greece
    ScientificWorldJournal 4:70-4. 2004
  6. ncbi request reprint Collagenous tissues upon lithium treatment: a quantitative ultrastructural study
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, 45110 Ioannina, Greece
    ScientificWorldJournal 4:605-21. 2004
  7. ncbi request reprint Aged skin: detection of alterations of major collagen types ratio by image processing of electron-optical data
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, P O Box 1186, Ioannina 45110, Greece
    Micron 35:221-5. 2004
  8. ncbi request reprint The role of collagen and elastin in aged skin: an image processing approach
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, P O Box 1186, 45110 Ioannina, Greece
    Micron 35:173-7. 2004
  9. ncbi request reprint The role of collagen in bone structure: an image processing approach
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, P O Box 1186, 45110 Ioannina, Greece
    Micron 36:593-601. 2005
  10. ncbi request reprint Preliminary estimates of the calcium/phosphorus ratio at different cortical bone sites using synchrotron microCT
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, 45110 Ioannina, Greece
    Phys Med Biol 51:1849-55. 2006

Collaborators

Detail Information

Publications27

  1. ncbi request reprint Diameter distributions of collagenous tissues in relation to sex. A quantitative ultrastructural study
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, P O Box 1186, 45110, Ioannina, Greece
    Micron 32:333-6. 2001
    ..In addition, the female rabbit collagen fibrils had a marked decrease in the mean diameter compared to male, in all the tissues examined (skin, liver, and bone). These data suggest that the collagen fibril diameter is related to sex...
  2. ncbi request reprint High resolution Ca/P maps of bone architecture in 3D synchrotron radiation microtomographic images
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, PO Box 1186, 45110 Ioannina, Greece
    Appl Radiat Isot 62:569-75. 2005
    ..001). Differences between estimates made at 20 and 28 keV are not significant (p>0.5). An important aspect is the ability to map the spatial distribution of the Ca/P ratio...
  3. ncbi request reprint Bone calcium, phosphorus detection by Auger electron spectroscopy
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, P O Box 1186, 45110 Ioannina, Greece
    Micron 36:706-9. 2005
    ..Experimental conditions were found whereby the samples could be analyzed without conductive coatings. The results of this preliminary investigation demonstrate that Auger electron spectroscopy can be used to study bone mineral elements...
  4. ncbi request reprint Development of a reliable and low-cost system for the study of EMF biological effects
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, 45110 Ioannina, Greece
    ScientificWorldJournal 4:100-4. 2004
  5. ncbi request reprint The effects of 910-MHz electromagnetic field on rat cranial arachnoid and dura mater collagen. The axial periodicity of collagen fibrils
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, 45110 Ioannina, Greece
    ScientificWorldJournal 4:70-4. 2004
    ..Such measurements were compared with those from sham-exposed animals. These measurements reveal that on exposure, the intermolecular interactions during collagen fibril assembly are affected...
  6. ncbi request reprint Collagenous tissues upon lithium treatment: a quantitative ultrastructural study
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, 45110 Ioannina, Greece
    ScientificWorldJournal 4:605-21. 2004
    ..Computer analysis shows no differences in charged amino acid composition between lithium-treated and -untreated samples. Under the present experimental conditions, lithium can induce permanent structural collagen alterations...
  7. ncbi request reprint Aged skin: detection of alterations of major collagen types ratio by image processing of electron-optical data
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, P O Box 1186, Ioannina 45110, Greece
    Micron 35:221-5. 2004
    ..In particular, they detect alterations on the ratio of major collagen types in skin upon age...
  8. ncbi request reprint The role of collagen and elastin in aged skin: an image processing approach
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, P O Box 1186, 45110 Ioannina, Greece
    Micron 35:173-7. 2004
  9. ncbi request reprint The role of collagen in bone structure: an image processing approach
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, P O Box 1186, 45110 Ioannina, Greece
    Micron 36:593-601. 2005
    ..Computer analyses of normal fibril positive staining patterns are presented in order to provide a basis for comparing such patterns with pathological ones...
  10. ncbi request reprint Preliminary estimates of the calcium/phosphorus ratio at different cortical bone sites using synchrotron microCT
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, 45110 Ioannina, Greece
    Phys Med Biol 51:1849-55. 2006
    ..1 < p < or = 0.9) while those between different bone sites are highly significant (p < 10(-3)) demonstrating a dependence upon life style and bone use...
  11. ncbi request reprint Neutron activation analysis of calcium/phosphorus ratio in rib bone of healthy humans
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, PO Box 1186, 45110, Ioannina, Greece
    Appl Radiat Isot 57:779-83. 2002
    ..The mean value (M+/-SD) for the investigated parameter for the whole group studied, 2.33+/-0.34, was within a very wide range of published data and close to the median value...
  12. ncbi request reprint Collagen as a model for the study of radiation induced side effects: use of image processing
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, PO Box 1186, 45110 Ioannina, Greece
    Micron 33:117-20. 2002
    ....
  13. ncbi request reprint Biological effects of radiation: role of electron microscopy
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, 45110 Ioannina, Greece
    Micron 33:115. 2002
  14. ncbi request reprint Measurement of the axial periodicity of collagen fibrils using an image processing method
    M Tzaphlidou
    Laboratory of Medical Physics, Medical School, University of Ioannina, P O Box 1186, 45110, Ioannina, Greece
    Micron 32:337-9. 2001
    ..The method gives information at a level of 2-3nm...
  15. ncbi request reprint Collagen fibril diameter in relation to bone site. a quantitative ultrastructural study
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, P O Box 1186, 45110 Ioannina, Greece
    Micron 36:703-5. 2005
    ..Statistically significant differences (0.001<p<0.04) in mean fibril diameter values between different bone sites were detected demonstrating a dependence upon bone use...
  16. ncbi request reprint Collagen fibril diameter in relation to bone site and to calcium/phosphorus ratio
    Panagiotis Berillis
    Laboratory of Medical Physics, Medical School, Ioannina University, P O Box 1186, 45110 Ioannina, Greece
    ScientificWorldJournal 6:1109-13. 2006
    ..Collagen fibril diameter and Ca/P ratio can both serve as indexes of bone quality...
  17. ncbi request reprint Skeletal calcium/phosphorus ratio measuring techniques and results. I. Microscopy and microtomography
    Vassilios Kyriazis
    Department of Materials Science and Technology, University of Ioannina, 45110 Ioannina, Greece
    ScientificWorldJournal 4:1027-34. 2004
    ..The authors argue that the choice of the best technique relies on its cost ad ease of applicability, its reliability, and precision...
  18. ncbi request reprint Calcium, phosphorus, calcium-phosphorus ratio in rib bone of healthy humans
    Margaret Tzaphlidou
    Laboratory of Medical Physics, Medical School, Ioannina University, 45110 Ioannina, Greece
    Biol Trace Elem Res 93:63-74. 2003
    ..An indication is that the specificity of the Ca/P ratio improves upon that for Ca and P concentrations and may be more reliable in the diagnosis of bone disorders...
  19. ncbi request reprint Spatial fuzzy c-means algorithm with adaptive fuzzy exponent selection for robust vermilion border detection in healthy and diseased lower lips
    Panagiota Spyridonos
    Department of Medical Physics, University of Ioannina, School of Health Sciences, University Campus, 45110 Ioannina, Greece Electronic address
    Comput Methods Programs Biomed 114:291-301. 2014
    ..Herein, a method for vermilion border detection and quantification in healthy and diseased lower lips is presented...
  20. pmc The effect of calcium and vitamin D supplementation on osteoporotic rabbit bones studied by vibrational spectroscopy
    Athina Lani
    Department of Medical Physics, Medical School, University of Ioannina, Ioannina, 45110, Greece
    J Biol Phys 40:401-12. 2014
    ..Thus, a high intake of vitamin D under inflammation-induced osteoporosis does not promote mineralization but suppresses bone resorption and restores metabolic balance. ..
  21. doi request reprint Spectroscopic assessment of normal cortical bone: differences in relation to bone site and sex
    Nikolaos Kourkoumelis
    Department of Medical Physics, Medical School, University of Ioannina, Greece
    ScientificWorldJournal 10:402-12. 2010
    ..Statistically significant differences were detected for the nonapatitic environments of acid phosphate and carbonate content. The mean values for the Ca/P ratio point to an increasing trend from tibia to forearm, and to femoral sections...
  22. doi request reprint Eye safety related to near infrared radiation exposure to biometric devices
    Nikolaos Kourkoumelis
    Department of Medical Physics, Medical School, University of Ioannina, Ioannina, Greece
    ScientificWorldJournal 11:520-8. 2011
    ..The purpose of this study is to explore the biological effects arising from exposing the eye to near infrared radiation with reference to international legislation...
  23. pmc Infrared spectroscopic assessment of the inflammation-mediated osteoporosis (IMO) model applied to rabbit bone
    Nikolaos Kourkoumelis
    Department of Medical Physics, Medical School, University of Ioannina, Ioannina, 45110, Greece
    J Biol Phys 38:623-35. 2012
    ..The results suggest that the application of the IMO model to rabbit bones effectively alters bone remodeling and forms an osteoporotic bone matrix with a dissimilar composition compared to the normal one...
  24. doi request reprint Gray Hausdorff distance measure for medical image comparison in dermatology: Evaluation of treatment effectiveness by image similarity
    Panagiota Spyridonos
    Department of Medical Physics, University of Ioannina Medical School, University Campus, Ioannina, Greece
    Skin Res Technol 19:e498-506. 2013
    ..Subjective image comparisons, that offer empirical 'qualitative' judgments of degrees of image similarities, are traditionally employed by the involved physicians...
  25. pmc Ca/P concentration ratio at different sites of normal and osteoporotic rabbit bones evaluated by Auger and energy dispersive X-ray spectroscopy
    Nikolaos Kourkoumelis
    Department of Medical Physics, Medical School, University of Ioannina, Ioannina, 45110 Greece
    J Biol Phys 38:279-91. 2012
    ..This study also discusses the applicability of AES and EDX to the semiquantitative measurements of bone mineral's main elements along with the critical experimental parameters...
  26. ncbi request reprint Determination of calcium, phosphorus, and the calcium/phosphorus ratio in cortical bone from the human femoral neck by neutron activation analysis
    Vladimir Zaichick
    Medical Radiological Research Center, Obninsk, Kaluga Region, Russia
    Appl Radiat Isot 56:781-6. 2002
    ..This means that specificity of Ca/P ratio is better than those of Ca and P concentrations are and may be more reliable for diagnosis of bone disorders...
  27. ncbi request reprint Calcium and phosphorus concentrations and the calcium/phosphorus ratio in trabecular bone from the femoral neck of healthy humans as determined by neutron activation analysis
    Vladimir Zaichick
    Department of Nuclear Medicine, Medical Radiological Research Center, 249020 Obninsk, Kaluga Region, Russia
    Appl Radiat Isot 58:623-7. 2003
    ..This suggests that the specificity of the Ca/P ratio is better than that of Ca and P concentrations and may be more reliable for the diagnosis of bone disorders...