2013 Fiscal Year Final Research Report
Conversion of CT image quality to suitable quality for images input into a computer-aided detection (CAD) system for lung cancer
| Project/Area Number |
23602005
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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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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| Co-Investigator(Kenkyū-buntansha) |
WADA Shinichi 新潟大学, 医歯学系, 教授 (80105519)
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| Research Collaborator |
MATSUMOTO Toru 健生クリニック
MURAO Kohei 富士通(株)
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| Project Period (FY) |
2011 – 2013
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| Keywords | X線CT装置 / 変調伝達関数（MTF） / 画像再構成関数 / 点広がり関数（PSF） / 空間分解能 / 肺がん / CT検診 |
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| Research Abstract |
When computer-aided detection (CAD) is applied to lung cancer screening, it is important to choose a reconstruction kernel suitable for images input into a CAD system. However, if the kernel suitable for CAD is different from the kernel that has been clinically used by a radiologist until the introduction of CAD, the change in kernel could cause difficulty. To overcome this problem, we proposed a new technique of image filtering as an alternative to the application of a different reconstruction kernel, based on the quantitative analysis of the modulation transfer function (MTF) measured in the system. It was demonstrated that the proposed method had good performance and improved the worsening in performance of CAD caused by the use of kernels unsuitable for images input into a CAD system.
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