JP2011056257A - 横方向走査型骨密度計及びそれに使用される検出器 - Google Patents
横方向走査型骨密度計及びそれに使用される検出器 Download PDFInfo
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- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/50—Clinical applications
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- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/40—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis
- A61B6/4035—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for generating radiation specially adapted for radiation diagnosis the source being combined with a filter or grating
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- A61B6/44—Constructional features of apparatus for radiation diagnosis
- A61B6/4429—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units
- A61B6/4435—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure
- A61B6/4441—Constructional features of apparatus for radiation diagnosis related to the mounting of source units and detector units the source unit and the detector unit being coupled by a rigid structure the rigid structure being a C-arm or U-arm
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- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/52—Devices using data or image processing specially adapted for radiation diagnosis
- A61B6/5211—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data
- A61B6/5229—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image
- A61B6/5235—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT
- A61B6/5241—Devices using data or image processing specially adapted for radiation diagnosis involving processing of medical diagnostic data combining image data of a patient, e.g. combining a functional image with an anatomical image combining images from the same or different ionising radiation imaging techniques, e.g. PET and CT combining overlapping images of the same imaging modality, e.g. by stitching
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment
- A61B6/42—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis
- A61B6/4208—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector
- A61B6/4241—Apparatus for radiation diagnosis, e.g. combined with radiation therapy equipment with arrangements for detecting radiation specially adapted for radiation diagnosis characterised by using a particular type of detector using energy resolving detectors, e.g. photon counting
Abstract
【解決手段】走査型骨密度計(10)は、X線を発生するためのX線源(22)と、X線源から放射されるX線を受け取るX線検出器とを含む。X線検出器はテルル化カドミウム(CdTe)半導体を含む。CdTe半導体とインジウムアノードとの組み合わせにより、X線検出器はショットキーコンタクトとして機能することが可能であり、漏れ電流をほぼ阻止する。走査型骨密度計は、被検体(14)の複数の走査画像を収集するために横方向走査経路に沿ってX線源及びX線検出器を移動するコントローラ(32)を更に含む。
【選択図】図1
Description
12 患者台
14 患者
16 長手方向軸
18 Cアーム
20 下端
22 X線源
24 上端
26 X線検出器
28 ラスタパターン
30 一連の横方向走査
32 並進運動コントローラ
34 ファンビーム
40 コンピュータ
42 ワークステーション
44 ディスプレイ
46 キーボード
48 マウス
100 検出器
102 検出器素子
104 検出器アレイ
110 幅
112 長さ
120 検出器素子
122 幅
124 長さ
126 端部
130 保護リング
132 カソード側
134 アノード電極
136 側
140 間隙
160 厚さ
162 幅
164 長さ
200 検出器
202 検出器部分
204 検出器部分
206 検出器部分
208 検出器部分
210 列
212 列
220 検出器素子
221 間隙
222 検出器素子
224 検出器素子
226 検出器素子
228 検出器素子の幅
230 検出器素子の幅
250 検出器
252 検出器素子
254 幅
256 長さ
260 空隙
262 全長
270 基板
300 CdTe半導体結晶ウェハ
302 カソード
304 アノード
306 X線入射面
308 反体側の面
402 検出器カソード
404 検出器アノード
500 計数率
502 計数率
600 1つのパルス
601 所定の閾値
Claims (16)
- X線を発生するX線源(22)と;
テルル化カドミウム(CdTe)半導体(300)を含み、前記X線源から放射されるX線を受け取るX線検出器(100、200)と;
被検体(14)の複数の走査画像を収集するために横方向走査経路(28)に沿って前記X線源及び前記X線検出器を移動するコントローラ(32)とを具備する走査型骨密度計(10)。 - 前記X線源(22)はデュアルエネルギーX線源である請求項1記載の走査型骨密度計(10)。
- 前記X線検出器(100)は複数の検出器素子(102)を具備し、各検出器素子は光子計数素子(304)を具備する請求項1記載の走査型骨密度計(10)。
- 前記X線検出器(100)は複数の検出器素子(102)を具備し、各検出器素子はショットキーコンタクト(304)を具備する請求項1記載の走査型骨密度計(10)。
- 前記X線検出器(100)は複数の検出器素子(102)を具備し、各検出器素子はアノード(304)及びカソード(302)を具備し、前記アノード(304)はインジウム材料及びアルミニウム材料のうち少なくとも一方を具備し且つ前記カソード(302)はプラチナ材料を具備する請求項1記載の走査型骨密度計(10)。
- 前記X線検出器(200)は、千鳥配置配列で配置された複数の線形検出器アレイ(202、204、206、208)を具備する請求項1記載の走査型骨密度計(10)。
- 前記X線検出器(100)は、線形検出器アレイ(104)を形成するように配列された複数の検出器素子(102)を具備する請求項1記載の走査型骨密度計(10)。
- 前記X線検出器(100)は複数の検出器素子(102)を具備し、各検出器素子は間隙(140)により隣接する検出器素子から分離される請求項1記載の走査型骨密度計(10)。
- カソード(302)と;
アノード(304)と;
前記カソードと前記アノードとの間に配設され、デュアルエネルギー横方向走査型X線源(22)から放射されるX線をX線エネルギーに比例する電流に変換するように構成されたテルル化カドミウム(CdTe)半導体(300)とを具備するX線検出器(100、200)。 - 前記X線検出器は、線形X線検出器アレイ(104)を形成するように配列された複数のCdTe半導体(300)を更に具備する請求項9記載のX線検出器(100)。
- 前記X線検出器は複数のCdTe半導体(300)を更に具備し、各CdTe半導体は光子計数素子(304)を有する請求項9記載のX線検出器(100)。
- 前記X線検出器は、千鳥配置パターンで配列された複数のCdTe半導体(300)を更に具備する請求項9記載のX線検出器(100、200)。
- 前記X線検出器は、複数のCdTe半導体(300)及び各半導体の上に形成されたショットキーコンタクト(304)を更に具備する請求項9記載のX線検出器(100、200)。
- 前記アノード(304)はショットキーコンタクトである請求項9記載のX線検出器(100、200)。
- 前記アノード(304)はインジウム材料及びアルミニウム材料のうち少なくとも一方を具備し且つ前記カソード(302)はプラチナ材料を具備する請求項9記載のX線検出器(100、200)。
- 前記半導体(300)の一部は間隙(140、260)により分離される請求項9記載のX線検出器(100、200)。
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
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US12/557,314 | 2009-09-10 | ||
US12/557,314 US8165266B2 (en) | 2009-09-10 | 2009-09-10 | Transverse scanning bone densitometer and detector used in same |
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JP2011056257A true JP2011056257A (ja) | 2011-03-24 |
JP2011056257A5 JP2011056257A5 (ja) | 2013-10-17 |
JP5623200B2 JP5623200B2 (ja) | 2014-11-12 |
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JP2010199436A Active JP5623200B2 (ja) | 2009-09-10 | 2010-09-07 | 走査型骨密度計 |
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US (1) | US8165266B2 (ja) |
JP (1) | JP5623200B2 (ja) |
DE (1) | DE102010037410A1 (ja) |
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US20110058649A1 (en) | 2011-03-10 |
US8165266B2 (en) | 2012-04-24 |
DE102010037410A1 (de) | 2011-03-17 |
JP5623200B2 (ja) | 2014-11-12 |
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