A new image reconstruction method was developed for a Compton camera. A simulation to determine a γ-ray source position was performed by using the simulation tool, GEANT4. An image reconstruction was made in two step...A new image reconstruction method was developed for a Compton camera. A simulation to determine a γ-ray source position was performed by using the simulation tool, GEANT4. An image reconstruction was made in two steps. First, a three dimensional image was constructed and projected in one selected plane, then the points from each ellipse was picked up by taking the peak points of a density distribution of crossing points between the ellipse and the first step image. The second step procedure improved the accuracy and the spatial resolution of a position de- termination significantly, comparing with the image obtained by only the first step. The accuracy and the resolution for a point source were obtained to be about 0.02 mm and (1.35±0.15) mm, respectively. The same procedure was applied to an imaging of the distributed γ-ray source.展开更多
SPIE-Vol-4310 0320195SPIE 会议录.卷4310:可视通信与图象处理=Proceed- ings of SPIE,Vol.4310:Visual communicatiins and im-age processing[会.英].IS & T-The Society for ImagingScience and Technology.—980P.(E)
SPIE-Vol.4123 0301122SPIE 会议录,卷4123:不完整数据的图象重构=Pro-ceedings of SPIE,Vol.4123:Image reconstruction fromincomplete data[会,英]/SPIE-The International Societyfor Optical Engineering.—308P.(E)本会议录收集...SPIE-Vol.4123 0301122SPIE 会议录,卷4123:不完整数据的图象重构=Pro-ceedings of SPIE,Vol.4123:Image reconstruction fromincomplete data[会,英]/SPIE-The International Societyfor Optical Engineering.—308P.(E)本会议录收集了在美国 San Diego展开更多
SPIE-Vol.4320 0321665SPIE 会议录,卷4320:医学成象中的物理学=Proceed-ings of SPIE,Vol.4320:physics of medical imaging[会,英]/SPIE-The International Society for Optical Engi-neering.—936P.(E)本会议录收集了在会上发表的10...SPIE-Vol.4320 0321665SPIE 会议录,卷4320:医学成象中的物理学=Proceed-ings of SPIE,Vol.4320:physics of medical imaging[会,英]/SPIE-The International Society for Optical Engi-neering.—936P.(E)本会议录收集了在会上发表的103篇论文。展开更多
文摘A new image reconstruction method was developed for a Compton camera. A simulation to determine a γ-ray source position was performed by using the simulation tool, GEANT4. An image reconstruction was made in two steps. First, a three dimensional image was constructed and projected in one selected plane, then the points from each ellipse was picked up by taking the peak points of a density distribution of crossing points between the ellipse and the first step image. The second step procedure improved the accuracy and the spatial resolution of a position de- termination significantly, comparing with the image obtained by only the first step. The accuracy and the resolution for a point source were obtained to be about 0.02 mm and (1.35±0.15) mm, respectively. The same procedure was applied to an imaging of the distributed γ-ray source.
文摘SPIE-Vol-4310 0320195SPIE 会议录.卷4310:可视通信与图象处理=Proceed- ings of SPIE,Vol.4310:Visual communicatiins and im-age processing[会.英].IS & T-The Society for ImagingScience and Technology.—980P.(E)
文摘SPIE-Vol.4123 0301122SPIE 会议录,卷4123:不完整数据的图象重构=Pro-ceedings of SPIE,Vol.4123:Image reconstruction fromincomplete data[会,英]/SPIE-The International Societyfor Optical Engineering.—308P.(E)本会议录收集了在美国 San Diego
文摘SPIE-Vol.4320 0321665SPIE 会议录,卷4320:医学成象中的物理学=Proceed-ings of SPIE,Vol.4320:physics of medical imaging[会,英]/SPIE-The International Society for Optical Engi-neering.—936P.(E)本会议录收集了在会上发表的103篇论文。
