发明名称 |
REDUCING ARTEFACTS IN MRI IMAGE DATA |
摘要 |
<p>A computer-implemented method is provided for reducing artefacts in an MRI image as a result of radiation induced current in collector coils of an MRI apparatus. The method comprises the following steps. Selecting a plurality of pixels in a k-space image prior to generation of the MRI image. Analysing each of the plurality of selected pixels to determine whether a pixel intensity is greater than a predefined global threshold. For each pixel having pixel intensity greater than the predefined global threshold, determining whether the pixel lies within a signal region of the k-space image or outside of the signal region of the k-space image. For each pixel that lies outside of the signal region, modifying the pixel intensity to be similar to a background pixel intensity, thereby creating a modified k-space image. Generating the MRI image based on the modified k-space image. A non-transitory computer readable medium and a radiation therapy system configured to implement the method are also provided.</p> |
申请公布号 |
CA2827636(A1) |
申请公布日期 |
2015.03.19 |
申请号 |
CA20132827636 |
申请日期 |
2013.09.19 |
申请人 |
ALBERTA HEALTH SERVICES |
发明人 |
BURKE, BENJAMIN;FALLONE, B. GINO;WACHOWICZ, KEITH;RATHEE, SATYAPAL |
分类号 |
G01R33/565;A61N5/00 |
主分类号 |
G01R33/565 |
代理机构 |
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代理人 |
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地址 |
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