JP5060993B2 - X線ct装置およびプログラム - Google Patents
X線ct装置およびプログラム Download PDFInfo
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- JP5060993B2 JP5060993B2 JP2008057479A JP2008057479A JP5060993B2 JP 5060993 B2 JP5060993 B2 JP 5060993B2 JP 2008057479 A JP2008057479 A JP 2008057479A JP 2008057479 A JP2008057479 A JP 2008057479A JP 5060993 B2 JP5060993 B2 JP 5060993B2
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- 210000003205 muscle Anatomy 0.000 claims description 57
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- 238000010521 absorption reaction Methods 0.000 description 4
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- A—HUMAN NECESSITIES
- A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
- A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
- A61B6/00—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment
- A61B6/50—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications
- A61B6/508—Apparatus or devices for radiation diagnosis; Apparatus or devices for radiation diagnosis combined with radiation therapy equipment specially adapted for specific body parts; specially adapted for specific clinical applications for non-human patients
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- Apparatus For Radiation Diagnosis (AREA)
Description
Claims (4)
- 被検体にX線を照射した際に得られる投影データに基づいて、当該被検体の断層画像を生成するX線CT装置であって、
同じ照射条件でX線照射した際に得られる筋肉部分のCT値、脂肪部分のCT値、対象部位のCT値を取得する取得手段と、
脂肪部分のCT値および筋肉部分のCT値の差分量に対する、対象部位のCT値と筋肉部分のCT値との差分量、または、対象部位のCT値と脂肪部分のCT値との差分量の相対的な大きさを、対象部位の脂肪含有度合いを表すパラメータとして算出する算出手段と、
を備えることを特徴とするX線CT装置。 - 請求項1に記載のX線CT装置であって、
前記取得手段は、実際に、被検体の筋肉部分周辺、脂肪部分周辺、対象部位周辺にX線照射した結果に基づいて、前記筋肉部分のCT値、脂肪部分のCT値、対象部位のCT値を算出することを特徴とするX線CT装置。 - 請求項2に記載のX線CT装置であって、
前記取得手段は、
照射条件を変えることなく、被検体の筋肉部分周辺、脂肪部分周辺、対象部位周辺にX線照射して投影データを取得する手段と、
得られた投影データに基づいて、筋肉部分周辺、脂肪部分周辺、対象部位周辺の断層画像を生成する手段と、
生成された断層画像を表示するとともに、当該断層画像において筋肉部分を示す筋肉ROI、脂肪部分を示す脂肪ROI、対象部位を示す対象ROIそれぞれの設定を受け付ける手段と、
設定された各ROI内のCT値の平均値を、筋肉部分のCT値、脂肪部分のCT値、対象部位のCT値として算出する手段と、
を備えることを特徴とするX線CT装置。 - コンピュータを、
被検体にX線を照射した際に得られる投影データから生成された被検体の断層画像に基づいて、同じ照射条件でX線照射した際に得られる筋肉部分のCT値、脂肪部分のCT値、対象部位のCT値を算出するCT値算出手段と、
脂肪部分のCT値および筋肉部分のCT値の差分量に対する、対象部位のCT値および筋肉部分のCT値との差分量、または、対象部位のCT値および脂肪部分のCT値との差分量の相対的な大きさを、対象部位の脂肪含有度合いを表すパラメータとして算出する算出手段と、
して機能させることを特徴とするプログラム。
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JP2008057479A JP5060993B2 (ja) | 2008-03-07 | 2008-03-07 | X線ct装置およびプログラム |
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JP2008057479A JP5060993B2 (ja) | 2008-03-07 | 2008-03-07 | X線ct装置およびプログラム |
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JP5060993B2 true JP5060993B2 (ja) | 2012-10-31 |
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Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
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JP5543876B2 (ja) * | 2010-08-19 | 2014-07-09 | 日立アロカメディカル株式会社 | X線ct装置 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
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JP3453085B2 (ja) * | 1998-07-23 | 2003-10-06 | ジーイー横河メディカルシステム株式会社 | X線ct装置 |
CN1498385A (zh) * | 2000-08-29 | 2004-05-19 | 成像治疗仪公司 | X图像量析的方法与装置 |
JP3974842B2 (ja) * | 2002-10-30 | 2007-09-12 | アロカ株式会社 | X線骨密度測定装置 |
US6999549B2 (en) * | 2002-11-27 | 2006-02-14 | Ge Medical Systems Global Technology, Llc | Method and apparatus for quantifying tissue fat content |
JP4375009B2 (ja) * | 2003-12-11 | 2009-12-02 | 株式会社島津製作所 | 内臓脂肪率診断装置、及び、該装置を組み込んだ放射線ct装置 |
JP5010167B2 (ja) * | 2005-04-07 | 2012-08-29 | 株式会社東芝 | X線ct装置 |
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