The Experts below are selected from a list of 231 Experts worldwide ranked by ideXlab platform

B. Brinkmann - One of the best experts on this subject based on the ideXlab platform.

  • Manipulated Radiographic material – capability and risk for the forensic consultant?
    International Journal of Legal Medicine, 1999
    Co-Authors: A. Du Chesne, S. Benthaus, B. Brinkmann
    Abstract:

    As interest is being increasingly focused on the digital processing of radiographs for identification of the deceased, the benefits and risks of electronic image processing are presented. With digitization of all kinds of Radiographic Equipment being on the increase and image processing personal computers being readily accessible, increasing quantities of manipulated Radiographic material are to be expected in the future. This potential risk is meanwhile highlighted from the legal aspect.

  • manipulated Radiographic material capability and risk for the forensic consultant
    International Journal of Legal Medicine, 1999
    Co-Authors: A. Du Chesne, S. Benthaus, B. Brinkmann
    Abstract:

    As interest is being increasingly focused on the digital processing of radiographs for identification of the deceased, the benefits and risks of electronic image processing are presented. With digitization of all kinds of Radiographic Equipment being on the increase and image processing personal computers being readily accessible, increasing quantities of manipulated Radiographic material are to be expected in the future. This potential risk is meanwhile highlighted from the legal aspect.

A. Du Chesne - One of the best experts on this subject based on the ideXlab platform.

  • Manipulated Radiographic material – capability and risk for the forensic consultant?
    International Journal of Legal Medicine, 1999
    Co-Authors: A. Du Chesne, S. Benthaus, B. Brinkmann
    Abstract:

    As interest is being increasingly focused on the digital processing of radiographs for identification of the deceased, the benefits and risks of electronic image processing are presented. With digitization of all kinds of Radiographic Equipment being on the increase and image processing personal computers being readily accessible, increasing quantities of manipulated Radiographic material are to be expected in the future. This potential risk is meanwhile highlighted from the legal aspect.

  • manipulated Radiographic material capability and risk for the forensic consultant
    International Journal of Legal Medicine, 1999
    Co-Authors: A. Du Chesne, S. Benthaus, B. Brinkmann
    Abstract:

    As interest is being increasingly focused on the digital processing of radiographs for identification of the deceased, the benefits and risks of electronic image processing are presented. With digitization of all kinds of Radiographic Equipment being on the increase and image processing personal computers being readily accessible, increasing quantities of manipulated Radiographic material are to be expected in the future. This potential risk is meanwhile highlighted from the legal aspect.

Gumersindo Verdú - One of the best experts on this subject based on the ideXlab platform.

  • Quality assurance applied to digital Radiographic Equipment by developed software for phantom images
    Nuclear Technology, 2011
    Co-Authors: P. Mayo, Francisco Ródenas, J. M. Campayo, B. Marín, Gumersindo Verdú
    Abstract:

    The assessment and control of image quality is a fundamental task associated with good practice to guarantee a suitable diagnosis by the radiologist. The need for image quality assessments in radio...

  • Analysis of image quality parameter of conventional and dental Radiographic digital images
    2010 Annual International Conference of the IEEE Engineering in Medicine and Biology, 2010
    Co-Authors: P. Mayo, Francisco Ródenas, J. M. Campayo, Gumersindo Verdú, S. Gallardo
    Abstract:

    The image quality obtained by a Radiographic Equipment is very useful to characterize the physical properties of the image Radiographic chain, in a quality control of the Radiographic Equipment. In the Radiographic technique it is necessary that the evaluation of the image can guarantee the constancy of its quality to carry out a suitable diagnosis. In this work we have designed some Radiographic phantoms for different Radiographic digital devices, as dental, conventional, Equipments with computed radiography (phosphor plate) and direct radiography (sensor) technology. Additionally, we have developed a software to analyse the image obtained by the Radiographic Equipment with digital processing techniques, as edge detector, morphological operators, statistical test for the detected combinations.. The design of these phantoms let the evaluation of a wide range of operating conditions of voltage, current and time of the digital Equipments. Moreover, the image quality analysis by the automatic software, let study it with objective parameters.

  • Phantom Development for Constancy and Acceptance Test for Digital Radiographic Equipment
    Nuclear Technology, 2009
    Co-Authors: P. Mayo, Francisco Ródenas, J. M. Campayo, A. Pascual, B. Marín, Gumersindo Verdú
    Abstract:

    The development of specific phantoms to study the image obtained by computerized and direct digital Radiographic Equipment is the objective of this work to characterize the physical properties of t...

  • Image Quality Assessment of Digital Dental Radiography Systems with Specifically Developed Phantom and Software
    Nuclear Technology, 2009
    Co-Authors: P. Mayo, Francisco Ródenas, J. M. Campayo, A. Pascual, B. Marín, Gumersindo Verdú
    Abstract:

    The purpose of this work is to assess the image quality of dental digital systems with computed radiography (phosphor plate) and direct radiography (charge-coupled-device sensor), by developing a specific dental phantom named RADEN and software to analyze the phantom image automatically. The phantom developed to evaluate the image quality of dental Radiographic Equipment has specific test objects of contrast-detail combinations appropriated for the resolution of the dental digital systems. The image quality is evaluated by using contrast-detail curves and an image quality index. The phantom was made of a square aluminum block 7.5 × 7.5 cm that has a lodge of size 3.2 × 3.2 cm for fixing the sensor of the digital dental system, and it contains specific test objects of contrast-detail combinations that are cylindrical holes. The diameters of the holes ranged from 0.3 to 1.6 mm, and the depths ranged from 0.14 to 1.28 mm; these ranges for the diameters and depths are suitable for resolution of the dental digital systems and the contrast attenuation curves of the X-radiation, and the results are sensitive to the operating conditions of the dental Radiographic system. We have also developed specific software to analyze the RADEN phantom image automatically obtained by the digital Radiographic Equipment. The algorithms are based on digital image processing techniques, and they have been implemented in a user-friendly tool with a graphical interface.

  • Analysis of digital Radiographic Equipments with development of specific phantoms and software
    IFMBE Proceedings, 2009
    Co-Authors: Patricia Mayo Nogueira, Francisco Ródenas, J. M. Campayo, B. Marín, Gumersindo Verdú
    Abstract:

    In this work we have designed some specific phantoms to study the obtained image of computerized and direct digital Radiographic Equipments to characterize the constancy of the imaging chain. The developed phantoms are applied for different Radiographic digital devices, as conventional Equipments with computed radiography (phosphor plate) and direct radiography (sensor) technology. These phantoms have specific characteristics for these systems, as different test zones for the analysis of the image quality. The test zones that are in these phantoms are low contrast objects, varying in diameter and size, for the threshold contrast resolution of the system, high resolution test for the limiting spatial resolution, dynamic step wedge for the dynamic range of grays of the system, homogeneity zone and alignment marks for position and size of radiation field. Additionally, we have developed a software based on automatical processing techniques to analyze the image obtained by the Radiographic Equipment with digital processing techniques as edge detector, morphological operators, statistical test for the detected combinations. The images have been acquired in DICOM format and they can be analyzed with objective parameters as an image quality index and the contrast detail curve. The design of these phantoms let the evaluation of a wide range of operating conditions of voltage, current and time of the digital Radiographic Equipments and the functioning of the image chain of the digital system applied to its quality control for image quality and radiation exposure.

P. Mayo - One of the best experts on this subject based on the ideXlab platform.

  • Quality assurance applied to digital Radiographic Equipment by developed software for phantom images
    Nuclear Technology, 2011
    Co-Authors: P. Mayo, Francisco Ródenas, J. M. Campayo, B. Marín, Gumersindo Verdú
    Abstract:

    The assessment and control of image quality is a fundamental task associated with good practice to guarantee a suitable diagnosis by the radiologist. The need for image quality assessments in radio...

  • Analysis of image quality parameter of conventional and dental Radiographic digital images
    2010 Annual International Conference of the IEEE Engineering in Medicine and Biology, 2010
    Co-Authors: P. Mayo, Francisco Ródenas, J. M. Campayo, Gumersindo Verdú, S. Gallardo
    Abstract:

    The image quality obtained by a Radiographic Equipment is very useful to characterize the physical properties of the image Radiographic chain, in a quality control of the Radiographic Equipment. In the Radiographic technique it is necessary that the evaluation of the image can guarantee the constancy of its quality to carry out a suitable diagnosis. In this work we have designed some Radiographic phantoms for different Radiographic digital devices, as dental, conventional, Equipments with computed radiography (phosphor plate) and direct radiography (sensor) technology. Additionally, we have developed a software to analyse the image obtained by the Radiographic Equipment with digital processing techniques, as edge detector, morphological operators, statistical test for the detected combinations.. The design of these phantoms let the evaluation of a wide range of operating conditions of voltage, current and time of the digital Equipments. Moreover, the image quality analysis by the automatic software, let study it with objective parameters.

  • Phantom Development for Constancy and Acceptance Test for Digital Radiographic Equipment
    Nuclear Technology, 2009
    Co-Authors: P. Mayo, Francisco Ródenas, J. M. Campayo, A. Pascual, B. Marín, Gumersindo Verdú
    Abstract:

    The development of specific phantoms to study the image obtained by computerized and direct digital Radiographic Equipment is the objective of this work to characterize the physical properties of t...

  • Image Quality Assessment of Digital Dental Radiography Systems with Specifically Developed Phantom and Software
    Nuclear Technology, 2009
    Co-Authors: P. Mayo, Francisco Ródenas, J. M. Campayo, A. Pascual, B. Marín, Gumersindo Verdú
    Abstract:

    The purpose of this work is to assess the image quality of dental digital systems with computed radiography (phosphor plate) and direct radiography (charge-coupled-device sensor), by developing a specific dental phantom named RADEN and software to analyze the phantom image automatically. The phantom developed to evaluate the image quality of dental Radiographic Equipment has specific test objects of contrast-detail combinations appropriated for the resolution of the dental digital systems. The image quality is evaluated by using contrast-detail curves and an image quality index. The phantom was made of a square aluminum block 7.5 × 7.5 cm that has a lodge of size 3.2 × 3.2 cm for fixing the sensor of the digital dental system, and it contains specific test objects of contrast-detail combinations that are cylindrical holes. The diameters of the holes ranged from 0.3 to 1.6 mm, and the depths ranged from 0.14 to 1.28 mm; these ranges for the diameters and depths are suitable for resolution of the dental digital systems and the contrast attenuation curves of the X-radiation, and the results are sensitive to the operating conditions of the dental Radiographic system. We have also developed specific software to analyze the RADEN phantom image automatically obtained by the digital Radiographic Equipment. The algorithms are based on digital image processing techniques, and they have been implemented in a user-friendly tool with a graphical interface.

S. Benthaus - One of the best experts on this subject based on the ideXlab platform.

  • Manipulated Radiographic material – capability and risk for the forensic consultant?
    International Journal of Legal Medicine, 1999
    Co-Authors: A. Du Chesne, S. Benthaus, B. Brinkmann
    Abstract:

    As interest is being increasingly focused on the digital processing of radiographs for identification of the deceased, the benefits and risks of electronic image processing are presented. With digitization of all kinds of Radiographic Equipment being on the increase and image processing personal computers being readily accessible, increasing quantities of manipulated Radiographic material are to be expected in the future. This potential risk is meanwhile highlighted from the legal aspect.

  • manipulated Radiographic material capability and risk for the forensic consultant
    International Journal of Legal Medicine, 1999
    Co-Authors: A. Du Chesne, S. Benthaus, B. Brinkmann
    Abstract:

    As interest is being increasingly focused on the digital processing of radiographs for identification of the deceased, the benefits and risks of electronic image processing are presented. With digitization of all kinds of Radiographic Equipment being on the increase and image processing personal computers being readily accessible, increasing quantities of manipulated Radiographic material are to be expected in the future. This potential risk is meanwhile highlighted from the legal aspect.