D. Steinberg - Academia.edu (original) (raw)
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Centre National de la Recherche Scientifique / French National Centre for Scientific Research
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Papers by D. Steinberg
IEEE Transactions on Medical Imaging, 2000
Proton radiography generates two-dimensional projection images of an object and has applications ... more Proton radiography generates two-dimensional projection images of an object and has applications in patient alignment and verification procedures for proton beam radiation therapy. The quality of the image, both contrast and spatial resolution, is affected by the energy of the protons used in the creation of the radiograph, as well as by multiple Coulomb scattering and energy-loss straggling. Here we report an experiment which used 200 MeV protons to generate proton energy-loss and scattering radiographs of a hand phantom. It was found that while both radiographs displayed anatomical details of the hand phantom, the energy-loss radiograph has a noticeably higher spatial resolution. The scattering radiograph may yield sharper edges between soft and bone tissue than energy loss radiograph, but this requires further study. These radiographs demonstrate the new promise of proton imaging (proton radiography and CT) now within reach of becoming a new, potentially low-dose medical imaging modality. The experiment used the current firstgeneration proton CT scanner prototype, which is installed on the research beam line of the clinical proton synchrotron at Loma Linda University Medical Center. This study contributes to the optimization of the performance of a clinical proton CT scanner.
2011 IEEE Nuclear Science Symposium Conference Record, 2011
Proton Computed Tomography (pCT) is being developed in support of proton therapy and treatment pl... more Proton Computed Tomography (pCT) is being developed in support of proton therapy and treatment planning. The aim of pCT, to reconstruct an accurate map of the stopping power (S.P.) in a phantom and, in the future, in patients, is being pursued with a diverse list of detector systems, using the entire arsenal of tracking and energy detectors developed for High Energy Physics (HEP). The first radiographs and 3D images are being reconstructed with prototype detectors, which will be described. Most of the existing systems are being upgraded to higher proton fluxes to reduce the scanning time.
Proton radiography generates two-dimensional pro- jection images of an object and has application... more Proton radiography generates two-dimensional pro- jection images of an object and has applications in patient alignment and verification procedures for proton beam radiation therapy. The quality of the image, both contrast and spatial resolution, is affected by the energy of the protons used in the creation of the radiograph, as well as by multiple Coulomb scat- tering and energy-loss straggling.
IEEE Transactions on Medical Imaging, 2000
Proton radiography generates two-dimensional projection images of an object and has applications ... more Proton radiography generates two-dimensional projection images of an object and has applications in patient alignment and verification procedures for proton beam radiation therapy. The quality of the image, both contrast and spatial resolution, is affected by the energy of the protons used in the creation of the radiograph, as well as by multiple Coulomb scattering and energy-loss straggling. Here we report an experiment which used 200 MeV protons to generate proton energy-loss and scattering radiographs of a hand phantom. It was found that while both radiographs displayed anatomical details of the hand phantom, the energy-loss radiograph has a noticeably higher spatial resolution. The scattering radiograph may yield sharper edges between soft and bone tissue than energy loss radiograph, but this requires further study. These radiographs demonstrate the new promise of proton imaging (proton radiography and CT) now within reach of becoming a new, potentially low-dose medical imaging modality. The experiment used the current firstgeneration proton CT scanner prototype, which is installed on the research beam line of the clinical proton synchrotron at Loma Linda University Medical Center. This study contributes to the optimization of the performance of a clinical proton CT scanner.
2011 IEEE Nuclear Science Symposium Conference Record, 2011
Proton Computed Tomography (pCT) is being developed in support of proton therapy and treatment pl... more Proton Computed Tomography (pCT) is being developed in support of proton therapy and treatment planning. The aim of pCT, to reconstruct an accurate map of the stopping power (S.P.) in a phantom and, in the future, in patients, is being pursued with a diverse list of detector systems, using the entire arsenal of tracking and energy detectors developed for High Energy Physics (HEP). The first radiographs and 3D images are being reconstructed with prototype detectors, which will be described. Most of the existing systems are being upgraded to higher proton fluxes to reduce the scanning time.
Proton radiography generates two-dimensional pro- jection images of an object and has application... more Proton radiography generates two-dimensional pro- jection images of an object and has applications in patient alignment and verification procedures for proton beam radiation therapy. The quality of the image, both contrast and spatial resolution, is affected by the energy of the protons used in the creation of the radiograph, as well as by multiple Coulomb scat- tering and energy-loss straggling.