KR20090078513A - 트렁케이션 아티팩트를 보정하는 방법 - Google Patents
트렁케이션 아티팩트를 보정하는 방법 Download PDFInfo
- Publication number
- KR20090078513A KR20090078513A KR1020080004377A KR20080004377A KR20090078513A KR 20090078513 A KR20090078513 A KR 20090078513A KR 1020080004377 A KR1020080004377 A KR 1020080004377A KR 20080004377 A KR20080004377 A KR 20080004377A KR 20090078513 A KR20090078513 A KR 20090078513A
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- South Korea
- Prior art keywords
- projection data
- truncation
- region
- normal
- correcting
- Prior art date
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- 238000000034 method Methods 0.000 title claims abstract description 72
- 238000003384 imaging method Methods 0.000 abstract description 5
- 238000002591 computed tomography Methods 0.000 abstract description 2
- 238000001914 filtration Methods 0.000 description 11
- 230000008569 process Effects 0.000 description 9
- 238000010586 diagram Methods 0.000 description 8
- 230000008859 change Effects 0.000 description 3
- 238000012887 quadratic function Methods 0.000 description 3
- 238000007781 pre-processing Methods 0.000 description 2
- RZVAJINKPMORJF-UHFFFAOYSA-N Acetaminophen Chemical compound CC(=O)NC1=CC=C(O)C=C1 RZVAJINKPMORJF-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000004364 calculation method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000003325 tomography Methods 0.000 description 1
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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
- A61B6/51—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 dentistry
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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
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T1/00—General purpose image data processing
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T11/00—2D [Two Dimensional] image generation
- G06T11/003—Reconstruction from projections, e.g. tomography
- G06T11/005—Specific pre-processing for tomographic reconstruction, e.g. calibration, source positioning, rebinning, scatter correction, retrospective gating
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06T—IMAGE DATA PROCESSING OR GENERATION, IN GENERAL
- G06T2211/00—Image generation
- G06T2211/40—Computed tomography
- G06T2211/432—Truncation
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- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Medical Informatics (AREA)
- Physics & Mathematics (AREA)
- Heart & Thoracic Surgery (AREA)
- Surgery (AREA)
- Nuclear Medicine, Radiotherapy & Molecular Imaging (AREA)
- Optics & Photonics (AREA)
- Pathology (AREA)
- Radiology & Medical Imaging (AREA)
- Biomedical Technology (AREA)
- Biophysics (AREA)
- Molecular Biology (AREA)
- High Energy & Nuclear Physics (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Dentistry (AREA)
- Oral & Maxillofacial Surgery (AREA)
- Apparatus For Radiation Diagnosis (AREA)
Abstract
Description
Claims (3)
- 대상물을 촬영하여 프로젝션 데이터를 획득하는 단계;상기 프로젝션 데이터에서 정상 영역과 트렁케이션 영역을 설정하는 단계;상기 정상 영역의 정상 프로젝션 데이터로부터 LSF 기법을 이용하여 상기 트렁케이션 영역의 예측 프로젝션 데이터를 획득하는 단계;상기 정상 프로젝션 데이터와 예측 프로젝션 데이터를 연결하여 통합 프로젝션 데이터를 획득하는 단계; 및상기 통합 프로젝션 데이터를 재구성하는 단계;를 포함하는 것을 특징으로 하는 트렁케이션 아티팩트를 보정하는 방법.
- 제 1 항에 있어서,상기 LSF 기법은 상기 정상 프로젝션 데이터의 마지막 점을 지나야한다는 제1조건, 상기 LSF 기법을 이용하여 획득한 예측 프로젝션 데이터는 항상 양수이여야 한다는 제2조건 및 상기 LSF 기법에 의해 도출된 함수는 수렴하여야 한다는 제3조건을 모두 만족하는 것을 특징으로 하는 트렁케이션 아티팩트를 보정하는 방법.
- 제 1 항 또는 제 2 항에 있어서,상기 LSF 기법에 의해 도출된 함수는 2차 식인 것을 특징으로 하는 트렁케이션 아티팩트를 보정하는 방법.
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080004377A KR100923094B1 (ko) | 2008-01-15 | 2008-01-15 | 트렁케이션 아티팩트를 보정하는 방법 |
PCT/KR2009/000231 WO2009091202A2 (ko) | 2008-01-15 | 2009-01-15 | 트렁케이션 아티팩트를 보정하는 방법 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
KR1020080004377A KR100923094B1 (ko) | 2008-01-15 | 2008-01-15 | 트렁케이션 아티팩트를 보정하는 방법 |
Publications (2)
Publication Number | Publication Date |
---|---|
KR20090078513A true KR20090078513A (ko) | 2009-07-20 |
KR100923094B1 KR100923094B1 (ko) | 2009-10-22 |
Family
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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KR1020080004377A KR100923094B1 (ko) | 2008-01-15 | 2008-01-15 | 트렁케이션 아티팩트를 보정하는 방법 |
Country Status (2)
Country | Link |
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KR (1) | KR100923094B1 (ko) |
WO (1) | WO2009091202A2 (ko) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016076525A1 (en) * | 2014-11-14 | 2016-05-19 | Samsung Electronics Co., Ltd. | Tomography apparatus and method of reconstructing tomography image thereof |
US9839403B2 (en) | 2014-12-01 | 2017-12-12 | Samsung Electronics Co., Ltd. | Medical imaging apparatus and method for processing medical image |
KR20210147384A (ko) * | 2020-05-28 | 2021-12-07 | 건양대학교산학협력단 | 잘림 아티팩트 저감 프로젝션 데이터 보정방법 |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN111260771B (zh) * | 2020-01-13 | 2023-08-29 | 北京东软医疗设备有限公司 | 一种图像重建方法及装置 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4550371A (en) | 1982-09-27 | 1985-10-29 | General Electric Company | Method and apparatus for compensating CT images for truncated projections |
JP3446327B2 (ja) * | 1994-08-31 | 2003-09-16 | 株式会社島津製作所 | 放射線撮像装置 |
JP2003116824A (ja) | 2001-08-09 | 2003-04-22 | Shimadzu Corp | 放射線画像の補正方法及び放射線撮影装置 |
JP4282302B2 (ja) | 2001-10-25 | 2009-06-17 | 株式会社東芝 | X線ct装置 |
-
2008
- 2008-01-15 KR KR1020080004377A patent/KR100923094B1/ko active IP Right Grant
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2009
- 2009-01-15 WO PCT/KR2009/000231 patent/WO2009091202A2/ko active Application Filing
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016076525A1 (en) * | 2014-11-14 | 2016-05-19 | Samsung Electronics Co., Ltd. | Tomography apparatus and method of reconstructing tomography image thereof |
US10512437B2 (en) | 2014-11-14 | 2019-12-24 | Samsung Electronics Co., Ltd. | Tomography apparatus and method of reconstructing tomography image thereof |
US9839403B2 (en) | 2014-12-01 | 2017-12-12 | Samsung Electronics Co., Ltd. | Medical imaging apparatus and method for processing medical image |
KR20210147384A (ko) * | 2020-05-28 | 2021-12-07 | 건양대학교산학협력단 | 잘림 아티팩트 저감 프로젝션 데이터 보정방법 |
Also Published As
Publication number | Publication date |
---|---|
WO2009091202A3 (ko) | 2009-10-01 |
KR100923094B1 (ko) | 2009-10-22 |
WO2009091202A2 (ko) | 2009-07-23 |
WO2009091202A9 (ko) | 2010-01-28 |
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