X-ray diagnostic apparatus and x-ray diagnostic method
US-2015366529-A1 · Dec 24, 2015 · US
X-ray CT device
US9380987B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9380987-B2 |
| Application number | US-201214364257-A |
| Country | US |
| Kind code | B2 |
| Filing date | Dec 12, 2012 |
| Priority date | Dec 12, 2011 |
| Publication date | Jul 5, 2016 |
| Grant date | Jul 5, 2016 |
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Abstract
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In order to suppress reduction in sensitivity when acquiring high-resolution data, an X-ray CT device is provided with an X-ray source that irradiates a patient with X-rays, and an X-ray detector that detects the X-rays. The X-ray detector includes a plurality of detection elements (scintillators and photodiodes) arrayed in a first direction, and a plurality of separators that separate the detection elements arrayed in the first direction respectively from each other. The separators each have a first-direction width which is a width in the first direction, first-direction widths of some separators each arrayed every predetermined number of separators being different from first-direction widths of the other separators.
First claim
Opening claim text (preview).
The invention claimed is: 1. An X-ray CT device provided with an X-ray source that irradiates a patient with X-rays, and an X-ray detector that detects the X-rays, the X-ray detector comprising: a plurality of detection elements arrayed in a first direction; and a plurality of separators that separate the detection elements arrayed in the first direction respectively from each other, the separators each having a first-direction width which is a width in the first direction, first-direction widths of some separators each arrayed every predetermined number of separators being different from first-direction widths of the other separators. 2. The X-ray CT device according to claim 1 , wherein the X-ray detector further comprises collimators that restrict an incident direction of the X-rays to the detection elements, and wherein the collimators are disposed on surfaces of the separators, the surfaces being on the side of the X-ray source, and first-direction widths of the collimators are different, corresponding to the first-direction widths of the separators disposed, every predetermined number of collimators. 3. The X-ray CT device according to claim 2 , wherein the collimators each have a predetermined height in a direction from the surfaces of the separators toward the X-ray source, and heights of the collimators are different, corresponding to the first-direction widths of the separators. 4. The X-ray CT device according to claim 3 , wherein the separators having different first-direction widths every predetermined number of separators includes a first separator and a second separator having a smaller first-direction width than the first separator, and the heights of the collimators satisfies condition defined by the following expression (1): [ Mathematical formula 1 ] 0.9 × W 327 S - W 328 S W 327 L - W 328 L H 328 L ≤ H 328 S ≤ 1.1 × W 327 S - W 328 S W 327 L - W 328 L H 328 S ( 1 (Note that in the expressio
Assignees
Inventors
Classifications
involving processing of raw data to produce diagnostic data · CPC title
- A61B6/4266Primary
characterised by using a plurality of detector units (A61B6/4014 takes precedence) · CPC title
due to scatter · CPC title
characterised by using a particular type of detector · CPC title
Control of apparatus or devices for radiation diagnosis · CPC title
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Frequently asked questions
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- What does patent US9380987B2 cover?
- In order to suppress reduction in sensitivity when acquiring high-resolution data, an X-ray CT device is provided with an X-ray source that irradiates a patient with X-rays, and an X-ray detector that detects the X-rays. The X-ray detector includes a plurality of detection elements (scintillators and photodiodes) arrayed in a first direction, and a plurality of separators that separate the dete…
- Who is the assignee on this patent?
- Hitachi Medical Corp
- What technology area does this patent fall under?
- Primary CPC classification A61B6/4266. Mapped technology areas include Human Necessities.
- When was this patent published?
- Publication date Tue Jul 05 2016 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).