The Experts below are selected from a list of 246 Experts worldwide ranked by ideXlab platform

Jean-françois Bosset - One of the best experts on this subject based on the ideXlab platform.

  • Equivalent uniform dose concept evaluated by theoretical dose volume histograms for thoracic irradiation.
    Physica Medica, 2007
    Co-Authors: Jean-luc Dumas, Pierre Aletti, Fabrice Lorchel, Alain Noel, Didier Wolf, Yan Perrot, Pierre Courvoisier, Jean-françois Bosset
    Abstract:

    BACKGROUND AND PURPOSE: The goal of our study was to quantify the limits of the EUD models for use in score functions in inverse planning software, and for clinical application. MATERIALS AND METHODS: We focused on oesophagus cancer irradiation. Our evaluation was based on theoretical dose volume histograms (DVH), and we analyzed them using volumetric and linear quadratic EUD models, average and maximum dose concepts, the linear quadratic model and the Differential Area between each DVH. RESULTS: We evaluated our models using theoretical and more complex DVHs for the above regions of interest. We studied three types of DVH for the target volume: the first followed the ICRU dose homogeneity recommendations; the second was built out of the first requirements and the same average dose was built in for all cases; the third was truncated by a small dose hole. We also built theoretical DVHs for the organs at risk, in order to evaluate the limits of, and the ways to use both EUD(1) and EUD/LQ models, comparing them to the traditional ways of scoring a treatment plan. For each volume of interest we built theoretical treatment plans with differences in the fractionation. CONCLUSION: We concluded that both volumetric and linear quadratic EUDs should be used. Volumetric EUD(1) takes into account neither hot-cold spot compensation nor the differences in fractionation, but it is more sensitive to the increase of the irradiated volume. With linear quadratic EUD/LQ, a volumetric analysis of fractionation variation effort can be performed.

  • Equivalent uniform dose concept evaluated by theoretical dose volume histograms for thoracic irradiation
    Physica Medica, 2007
    Co-Authors: Pierre Aletti, Jean-luc Dumas, Fabrice Lorchel, Alain Noel, Didier Wolf, Yan Perrot, Pierre Courvoisier, Jean-françois Bosset
    Abstract:

    The goal of our study was to quantify the limits of the EUD models for use in score functions in inverse planning software, and for clinical application. MATERIALS AND METHODS: We focused on oesophagus cancer irradiation. Our evaluation was based on theoretical dose volume histograms (DVH), and we analyzed them using volumetric and linear quadratic EUD models, average and maximum dose concepts, the linear quadratic model and the Differential Area between each DVH. RESULTS: We evaluated our models using theoretical and more complex DVHs for the above regions of interest. We studied three types of DVH for the target volume: the first followed the ICRU dose homogeneity recommendations; the second was built out of the first requirements and the same average dose was built in for all cases; the third was truncated by a small dose hole. We also built theoretical DVHs for the organs at risk, in order to evaluate the limits of, and the ways to use both EUD(1) and EUD/LQ models, comparing them to the traditional ways of scoring a treatment plan. For each volume of interest we built theoretical treatment plans with differences in the fractionation. CONCLUSION: We concluded that both volumetric and linear quadratic EUDs should be used. Volumetric EUD(1) takes into account neither hot-cold spot compensation nor the differences in fractionation, but it is more sensitive to the increase of the irradiated volume. With linear quadratic EUD/LQ, a volumetric analysis of fractionation variation effort can be performed.

Pierre Aletti - One of the best experts on this subject based on the ideXlab platform.

  • Equivalent uniform dose concept evaluated by theoretical dose volume histograms for thoracic irradiation.
    Physica Medica, 2007
    Co-Authors: Jean-luc Dumas, Pierre Aletti, Fabrice Lorchel, Alain Noel, Didier Wolf, Yan Perrot, Pierre Courvoisier, Jean-françois Bosset
    Abstract:

    BACKGROUND AND PURPOSE: The goal of our study was to quantify the limits of the EUD models for use in score functions in inverse planning software, and for clinical application. MATERIALS AND METHODS: We focused on oesophagus cancer irradiation. Our evaluation was based on theoretical dose volume histograms (DVH), and we analyzed them using volumetric and linear quadratic EUD models, average and maximum dose concepts, the linear quadratic model and the Differential Area between each DVH. RESULTS: We evaluated our models using theoretical and more complex DVHs for the above regions of interest. We studied three types of DVH for the target volume: the first followed the ICRU dose homogeneity recommendations; the second was built out of the first requirements and the same average dose was built in for all cases; the third was truncated by a small dose hole. We also built theoretical DVHs for the organs at risk, in order to evaluate the limits of, and the ways to use both EUD(1) and EUD/LQ models, comparing them to the traditional ways of scoring a treatment plan. For each volume of interest we built theoretical treatment plans with differences in the fractionation. CONCLUSION: We concluded that both volumetric and linear quadratic EUDs should be used. Volumetric EUD(1) takes into account neither hot-cold spot compensation nor the differences in fractionation, but it is more sensitive to the increase of the irradiated volume. With linear quadratic EUD/LQ, a volumetric analysis of fractionation variation effort can be performed.

  • Equivalent uniform dose concept evaluated by theoretical dose volume histograms for thoracic irradiation
    Physica Medica, 2007
    Co-Authors: Pierre Aletti, Jean-luc Dumas, Fabrice Lorchel, Alain Noel, Didier Wolf, Yan Perrot, Pierre Courvoisier, Jean-françois Bosset
    Abstract:

    The goal of our study was to quantify the limits of the EUD models for use in score functions in inverse planning software, and for clinical application. MATERIALS AND METHODS: We focused on oesophagus cancer irradiation. Our evaluation was based on theoretical dose volume histograms (DVH), and we analyzed them using volumetric and linear quadratic EUD models, average and maximum dose concepts, the linear quadratic model and the Differential Area between each DVH. RESULTS: We evaluated our models using theoretical and more complex DVHs for the above regions of interest. We studied three types of DVH for the target volume: the first followed the ICRU dose homogeneity recommendations; the second was built out of the first requirements and the same average dose was built in for all cases; the third was truncated by a small dose hole. We also built theoretical DVHs for the organs at risk, in order to evaluate the limits of, and the ways to use both EUD(1) and EUD/LQ models, comparing them to the traditional ways of scoring a treatment plan. For each volume of interest we built theoretical treatment plans with differences in the fractionation. CONCLUSION: We concluded that both volumetric and linear quadratic EUDs should be used. Volumetric EUD(1) takes into account neither hot-cold spot compensation nor the differences in fractionation, but it is more sensitive to the increase of the irradiated volume. With linear quadratic EUD/LQ, a volumetric analysis of fractionation variation effort can be performed.

Jean-luc Dumas - One of the best experts on this subject based on the ideXlab platform.

  • Equivalent uniform dose concept evaluated by theoretical dose volume histograms for thoracic irradiation.
    Physica Medica, 2007
    Co-Authors: Jean-luc Dumas, Pierre Aletti, Fabrice Lorchel, Alain Noel, Didier Wolf, Yan Perrot, Pierre Courvoisier, Jean-françois Bosset
    Abstract:

    BACKGROUND AND PURPOSE: The goal of our study was to quantify the limits of the EUD models for use in score functions in inverse planning software, and for clinical application. MATERIALS AND METHODS: We focused on oesophagus cancer irradiation. Our evaluation was based on theoretical dose volume histograms (DVH), and we analyzed them using volumetric and linear quadratic EUD models, average and maximum dose concepts, the linear quadratic model and the Differential Area between each DVH. RESULTS: We evaluated our models using theoretical and more complex DVHs for the above regions of interest. We studied three types of DVH for the target volume: the first followed the ICRU dose homogeneity recommendations; the second was built out of the first requirements and the same average dose was built in for all cases; the third was truncated by a small dose hole. We also built theoretical DVHs for the organs at risk, in order to evaluate the limits of, and the ways to use both EUD(1) and EUD/LQ models, comparing them to the traditional ways of scoring a treatment plan. For each volume of interest we built theoretical treatment plans with differences in the fractionation. CONCLUSION: We concluded that both volumetric and linear quadratic EUDs should be used. Volumetric EUD(1) takes into account neither hot-cold spot compensation nor the differences in fractionation, but it is more sensitive to the increase of the irradiated volume. With linear quadratic EUD/LQ, a volumetric analysis of fractionation variation effort can be performed.

  • Equivalent uniform dose concept evaluated by theoretical dose volume histograms for thoracic irradiation
    Physica Medica, 2007
    Co-Authors: Pierre Aletti, Jean-luc Dumas, Fabrice Lorchel, Alain Noel, Didier Wolf, Yan Perrot, Pierre Courvoisier, Jean-françois Bosset
    Abstract:

    The goal of our study was to quantify the limits of the EUD models for use in score functions in inverse planning software, and for clinical application. MATERIALS AND METHODS: We focused on oesophagus cancer irradiation. Our evaluation was based on theoretical dose volume histograms (DVH), and we analyzed them using volumetric and linear quadratic EUD models, average and maximum dose concepts, the linear quadratic model and the Differential Area between each DVH. RESULTS: We evaluated our models using theoretical and more complex DVHs for the above regions of interest. We studied three types of DVH for the target volume: the first followed the ICRU dose homogeneity recommendations; the second was built out of the first requirements and the same average dose was built in for all cases; the third was truncated by a small dose hole. We also built theoretical DVHs for the organs at risk, in order to evaluate the limits of, and the ways to use both EUD(1) and EUD/LQ models, comparing them to the traditional ways of scoring a treatment plan. For each volume of interest we built theoretical treatment plans with differences in the fractionation. CONCLUSION: We concluded that both volumetric and linear quadratic EUDs should be used. Volumetric EUD(1) takes into account neither hot-cold spot compensation nor the differences in fractionation, but it is more sensitive to the increase of the irradiated volume. With linear quadratic EUD/LQ, a volumetric analysis of fractionation variation effort can be performed.

Li Qi - One of the best experts on this subject based on the ideXlab platform.

  • A novel hierarchical section protection based on the solid state transformer for the future renewable electric energy delivery and management (FREEDM) system
    IEEE Transactions on Smart Grid, 2013
    Co-Authors: Passinam Tatcho, Yu Jiang, Hui Li, Li Qi
    Abstract:

    The effectiveness of a protection scheme in any power grid is essential to the reliability of the supply. One of the main goals of the FREEDM systems is to increase supply reliability to end users. However, traditional protection methods, including over current, sequential components, and wide Differential Area protection, are not suitable for this system for several reasons that will be explained in the paper. A new protection strategy is presented in this paper. This protection scheme takes advantage not only of the system configuration but mostly of the solid state transformer capability and design to minimize any circuit and communication that are needed for a successful protection strategy. A real time digital simulator (RTDS) is used to model a sample FREEDM system in order to verify the proposed protection scheme. Hardware-in-the-loop (HIL) testing was performed to verify the proposed protection scheme.

Passinam Tatcho - One of the best experts on this subject based on the ideXlab platform.

  • A novel hierarchical section protection based on the solid state transformer for the future renewable electric energy delivery and management (FREEDM) system
    IEEE Transactions on Smart Grid, 2013
    Co-Authors: Passinam Tatcho, Yu Jiang, Hui Li, Li Qi
    Abstract:

    The effectiveness of a protection scheme in any power grid is essential to the reliability of the supply. One of the main goals of the FREEDM systems is to increase supply reliability to end users. However, traditional protection methods, including over current, sequential components, and wide Differential Area protection, are not suitable for this system for several reasons that will be explained in the paper. A new protection strategy is presented in this paper. This protection scheme takes advantage not only of the system configuration but mostly of the solid state transformer capability and design to minimize any circuit and communication that are needed for a successful protection strategy. A real time digital simulator (RTDS) is used to model a sample FREEDM system in order to verify the proposed protection scheme. Hardware-in-the-loop (HIL) testing was performed to verify the proposed protection scheme.

  • A novel line section protection for the FREEDM system based on the solid state transformer
    2011 IEEE Power and Energy Society General Meeting, 2011
    Co-Authors: Passinam Tatcho, Yu Jiang
    Abstract:

    The conventional protection scheme, including sequential components and wide Differential Area protection, may not be suitable for the FREEDM system mostly because of the unique characteristics of this new system. In this paper, the characteristics of FREEDM system are analyzed and a novel protection strategy, which makes full use of the system characteristics, is presented. This protection scheme makes use not only of the system configuration but mostly of the solid state transformer capability and design, to minimize the protection configuration and communication that are needed for a successful protection strategy. A Real Time Digital Simulator (RTDS) is used to model a sample FREEDM system in order to verify the proposed protection scheme. Simulation results are presented to support the proposed idea.