지원사업
학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
논문 기본 정보
- 자료유형
- 학술저널
- 저자정보
- 저널정보
- 한국의학물리학회 의학물리 의학물리 제29권 제4호
- 발행연도
- 2018.12
- 수록면
- 150 - 156 (7page)
- DOI
- https://doi.org/10.14316/pmp.2018.29.4.150
이용수
초록· 키워드
오류제보하기
This study aims to develop an improved Feldkamp-Davis-Kress (FDK) reconstruction algorithm using anisotropic total variation (ATV) minimization to enhance the image quality of low-dose conebeam computed tomography (CBCT). The algorithm first applies a filter that integrates the Shepp- Logan filter into a cosine window function on all projections for impulse noise removal. A total variation objective function with anisotropic penalty is then minimized to enhance the difference between the real structure and noise using the steepest gradient descent optimization with adaptive step sizes. The preserving parameter to adjust the separation between the noise-free and noisy areas is determined by calculating the cumulative distribution function of the gradient magnitude of the filtered image obtained by the application of the filtering operation on each projection. With these minimized ATV projections, voxel-driven backprojection is finally performed to generate the reconstructed images. The performance of the proposed algorithm was evaluated with the catphan503 phantom dataset acquired with the use of a low-dose protocol. Qualitative and quantitative analyses showed that the proposed ATV minimization provides enhanced CBCT reconstruction images compared with those generated by the conventional FDK algorithm, with a higher contrast-to-noise ratio (CNR), lower root-mean-square-error, and higher correlation. The proposed algorithm not only leads to a potential imaging dose reduction in repeated CBCT scans via lower mA levels, but also elicits high CNR values by removing noisy corrupted areas and by avoiding the heavy penalization of striking features.
목차
등록된 정보가 없습니다.
참고문헌 (18)
참고문헌 신청
Nabavizadeh N / 2016 / Image guided radiation therapy(IGRT)practice patterns and IGRT’s impact on workflow and treatment planning : Results from a national survey of American Society for Radiation Oncology members / International Journal of Radiation Oncology*Biology* Physics 94(4):850~857
Lu L / 2018 / Intra‐and inter‐fractional liver and lung tumor motions treated with SBRT under active breathing control / Journal of Applied Clinical Medical Physics 19(1):39~45
Yoganathan S / 2015 / Evaluating the image quality of cone beam CT acquired during rotational delivery / The British Journal of Radiology 88(1054):20150425
Alaei P / 2015 / Imaging dose from cone beam computed tomography in radiation therapy / Physica Medica 31(7):647~658
Wang J / 2008 / Dose reduction for kilovotage cone-beam computed tomography in radiation therapy / Physics in Medicine and Biology 53(11):2897
Lu L / 2018 / Intra‐and inter‐fractional liver and lung tumor motions treated with SBRT under active breathing control / Journal of Applied Clinical Medical Physics 19(1):39~45
Yoganathan S / 2015 / Evaluating the image quality of cone beam CT acquired during rotational delivery / The British Journal of Radiology 88(1054):20150425
Alaei P / 2015 / Imaging dose from cone beam computed tomography in radiation therapy / Physica Medica 31(7):647~658
Wang J / 2008 / Dose reduction for kilovotage cone-beam computed tomography in radiation therapy / Physics in Medicine and Biology 53(11):2897
함께 읽어보면 좋을 논문
논문 유사도에 따라 DBpia 가 추천하는 논문입니다. 함께 보면 좋을 연관 논문을 확인해보세요!
-
PCXMC 소프트웨어를 이용한 소아에서의 CBCT 환자선량 평가
대한치과의사협회지
2020 .06
-
Optimization of exposure parameters and relationship between subjective and technical image quality in cone-beam computed tomography
Imaging science in dentistry
2019 .01
-
Metal artifact production and reduction in CBCT with different numbers of basis images
Imaging science in dentistry
2018 .01
-
Half-Fan-Based Intensity-Weighted Region-of- Interest Imaging for Low-Dose Cone-Beam CT in Image-Guided Radiation Therapy
Healthcare Informatics Research
2016 .01
-
Feasibility and Efficacy of Adaptive Intensity Modulated Radiotherapy Planning according to Tumor Volume Change in Early Stage Non-small Cell Lung Cancer with Stereotactic Body Radiotherapy
의학물리
2015 .06
-
History of the Photon Beam Dose Calculation Algorithm in Radiation Treatment Planning System
의학물리
2020 .01
-
근관치료 영역에서 Cone Beam CT의 활용
대한치과의사협회지
2019 .06
-
Comparison of Volumes between Four-Dimensional Computed Tomography and Cone-Beam Computed Tomography Images using Dynamic Phantom
대한방사선치료학회지
2016 .01
-
Quantitative Evaluation of Patient Positioning Error Using CBCT 3D Gamma Density Analysis in Radiotherapy
의학물리
2017 .12
-
소아환자에서 교정분석을 위한 콘빔CT 촬영시 유효선량에 관한 연구
대한치과의사협회지
2015 .08
-
Comparison of cone-beam computed tomography cephalometric measurements using a midsagittal projection and conventional two-dimensional cephalometric measurements
대한치과교정학회지
2015 .11
-
New evolution of cone-beam computed tomography in dentistry: Combining digital technologies
Imaging science in dentistry
2019 .01
-
Cone-beam computed tomography: Time to move from ALARA to ALADA
Imaging science in dentistry
2015 .01
-
Projected lifetime cancer risk from cone-beam computed tomography for orthodontic treatment
대한치과교정학회지
2021 .05
-
폐 경피적 침 생검술에서 저선량콘빔CT(CBCT)와 Collimation 적용에 따른 선량변화와 영상의 질 평가
대한인터벤션영상기술학회지
2016 .05
-
Effect of the Number of Projected Images on the Noise Characteristics in Tomosynthesis Imaging
의학물리
2021 .01
-
저선량 핵의학 감마카메라 영상장치의 최근 발전
의공학회지
2015 .01
-
Intravenous contrast media application using cone-beam computed tomography in a rabbit model
Imaging science in dentistry
2015 .01
-
Three-dimensional CBCT based evaluation of the axis in gender
대한체질인류학회 학술대회 연제 초록
2022 .05
-
Application of Cone-Beam Computed Tomography-Generated Cephalograms in Children and Adolescents
대한소아치과학회지
2024 .08
이 논문의 저자 정보
최근 본 자료
댓글(0)
0