2012 Fiscal Year Final Research Report
Dual-energy CT for electron density measurements using clinical x-ray source
| Project/Area Number |
22611007
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Medical Physics/Radiological Technology
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| Research Institution | Niigata University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | electron density / dual-energy CT |
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| Research Abstract |
Dual-energy computed tomography (DECT) has the potential for measuring electron density distribution in a human body to predict the range of particle beams for treatment planning in proton or heavy-ion radiotherapy. However, thus far, a practical dual-energy method that can be used to precisely determine electron density for treatment planning in particle radiotherapy has not been developed. In this study, another DECT technique involving a balanced filter method using a conventional x-ray tube has been proposed. From the viewpoint of beam hardening and the tube-loading efficiency, the DECT using balanced filters would be significantly more effective in measuring the electron density than the conventional DECT.
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