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Projection-space denoising with bilateral filtering in computed tomography
US8965078B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-8965078-B2 |
| Application number | US-201013145461-A |
| Country | US |
| Kind code | B2 |
| Filing date | Feb 19, 2010 |
| Priority date | Feb 20, 2009 |
| Publication date | Feb 24, 2015 |
| Grant date | Feb 24, 2015 |
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Abstract
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Projection data acquired with an x-ray CT system is filtered using a bilateral filter to reduce image noise and enable the acquisition at lower x-ray dose without the loss of image diagnostic quality. The bilateral filtering is performed before image reconstruction by producing a noise equivalent data set from the acquired projection data and then converting the bilateral filtered values back to a projection data set suitable for image reconstruction.
First claim
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The invention claimed is: 1. A method for filtering a sinogram data set (P) comprised of projection views acquired by a tomographic system, the steps of the method comprising: a) converting the sinogram data set into a map (N) having values that indicate a noise-equivalent number of detected photons, wherein the values in the map are a function of incident photons (N 0 ) and values in the sinogram data set; b) calculating a normally distributed photon count data set (Q) from the…
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- G06T12/10Primary
Physics · mapped topic
Physics · mapped topic
- G06T11/005Primary
Physics · mapped topic
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- What does patent US8965078B2 cover?
- Projection data acquired with an x-ray CT system is filtered using a bilateral filter to reduce image noise and enable the acquisition at lower x-ray dose without the loss of image diagnostic quality. The bilateral filtering is performed before image reconstruction by producing a noise equivalent data set from the acquired projection data and then converting the bilateral filtered values back t…
- Who is the assignee on this patent?
- Yu Lifeng, Manduca Armando, Trzasko Joshua, and 2 more
- What technology area does this patent fall under?
- Primary CPC classification G06T12/10. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Feb 24 2015 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).