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检索条件"主题词=Medical-image reconstruction methods and algorithms"
54 条 记 录,以下是1-10 订阅
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Radiographic restoration technique based on a simple scatter-and-noise degradation model to enhance image visibility in cone-beam computed tomography systems using an offset detector
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JOURNAL OF INSTRUMENTATION 2025年 第2期20卷 C02042-C02042页
作者: Park, Jiwon Jeon, Duhee Han, Seohee Kim, Woosung Park, Sungmin Cho, Hyosung Yonsei Univ Dept Radiat Convergence Engn Wonju 26493 South Korea
This study presents a novel radiographic restoration technique based on a simple scatter- and-noise degradation model to enhance image visibility in cone-beam computed tomography (CBCT) systems using an offset detecto... 详细信息
来源: 评论
Background reduction in PET by double Compton scattering of quantum entangled annihilation photons
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JOURNAL OF INSTRUMENTATION 2023年 第7期18卷 P07007页
作者: Kim, Donghwan Rachman, Agus Nur Taisei, Ueki Uenomachi, Mizuki Shimazoe, Kenji Takahashi, Hiroyuki Univ Tokyo Dept Nucl Engn & Management 7-3-1 Hongo Bunkyo City Tokyo 1138654 Japan Univ Tokyo Dept Bioengn 7-3-1 Hongo Bunkyo City Tokyo 1138654 Japan RIKEN Nishina Ctr Accelerator Based Sci 2-1 Hirosawa Wako Saitama 3510198 Japan
The reduction of background events, such as random and scatter events, can improve positron emission tomography (PET) images quantitatively. The quantum entanglement property of annihilation photons has been theoretic... 详细信息
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Chest shape measurement by multi-sensors for pulmonary electrical impedance tomography
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JOURNAL OF INSTRUMENTATION 2023年 第2期18卷 P02008页
作者: Liu, J. Z. Zhang, L. Y. Xiong, H. TianGong Univ Sch Control Sci & Engn Tianjin 300387 Peoples R China TianGong Univ Key Lab Intelligent Control Elect Equipment Tianjin 300387 Peoples R China
Electrical impedance tomography (EIT) has been gradually used in lung health detection. When the lungs are measured using EIT, the image quality is compromised by contour changes outside the thorax. In this paper, the... 详细信息
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DIDR-Net: a sparse-view CT deep iterative reconstruction network with an independent detail recovery network
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JOURNAL OF INSTRUMENTATION 2023年 第5期18卷 P05038页
作者: Wang, Xiang He, Jichun Liu, Yi Zhang, Pengcheng Cheng, Weiting Wang, Bin Gui, Zhiguo North Univ China Sch Comp Sci & Technol Taiyuan Peoples R China Northeastern Univ Sch Med & Bioinformat Engn Shenyang Peoples R China North Univ China Sch Informat & Commun Engn Taiyuan Peoples R China
Sparse-view CT is an effective method to reduce X-ray radiation dose in clinical CT imaging. However, sparse view image reconstruction is still challenging due to highly undersampled data. To this end, we propose a ne... 详细信息
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Deformable 3D medical image registration with convolutional neural network and transformer
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JOURNAL OF INSTRUMENTATION 2023年 第4期18卷 P04029页
作者: Deng, Liwei Zou, Yanchao Huang, Sijuan Yang, Xin Wang, Jing Harbin Univ Sci & Technol Sch Automation Xuefu Rd Harbin 150080 Peoples R China Sun Yat Sen Univ Canc Ctr Dept Radiat Oncol Dungfung Rd East Guangzhou 510060 Peoples R China South China Normal Univ Inst Brain Res & Rehabil Zhongshan Ave West Guangzhou 510631 Peoples R China
Deformable registration of medical images based on deep learning has been the research focus this year. Convolutional Neural Network (CNN) and the transformer are the most common backbone and have been shown to enhanc... 详细信息
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Large-Area SiPM Pixels (LASiPs) in SPECT
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NUCLEAR INSTRUMENTS & methods IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT 2023年 1048卷
作者: Wunderlich, C. Guberman, D. Paoletti, R. Rugliancich, A. Passeri, A. Ist Nazl Fis Nucl INFN Sez Pisa Largo Bruno Pontecorvo 3 Edificio C I-56126 Pisa Italy Univ Siena Dipartimento Sci Fis Terra & Ambiente Via Roma 56 I-53100 Siena Italy Univ Barcelona UB Dept Fis Quant & Astrofis FQA Marti & Franques 1 Barcelona 08028 Spain Univ Barcelona UB Inst Ciencies Cosmos ICCUB Marti & Franques 1 Barcelona 08028 Spain Univ Firenze Dipartimento Sci Biomed Sperimentali & Clin SBSC Viale Morgagni 50 I-50134 Florence Italy
A standard camera for Single Photon Emission Computed Tomography (SPECT) contains 50-100 photomulti-plier tubes (PMTs). It is shielded by a thick layer of lead which makes it heavy and bulky. Its weight and size could... 详细信息
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Preliminary study of integrated C-arm CT/SPECT imaging system for online adaptive 3D brachytherapy using Monte Carlo simulation
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JOURNAL OF INSTRUMENTATION 2023年 第4期18卷 C04005-C04005页
作者: Lee, M. Lee, H. Seong, S. Park, H. Kim, H. Min, C. Choi, H. Choa, H. Yonsei Univ Dept Radiat Convergence Engn Wonju South Korea Yonsei Univ Wonju Severance Christian Hosp Dept Radiat Oncol Wonju Coll Med Wonju South Korea
Recent advancements in high-dose-rate brachytherapy have led to remarkable clinical outcomes. However, these new developments can cause unknown uncertainties with respect to actual dose delivery, which are yet to be c... 详细信息
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Experiment and simulation of microwave detection using IQ demodulation method for breast tumor screening
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JOURNAL OF INSTRUMENTATION 2022年 第3期17卷
作者: Li, C. P. Yao, Y. Li, Z. H. Cheng, L. Zhang, Y. Liu, H. Q. Lanzhou Univ Lanzhou 730000 Gansu Peoples R China Chinese Acad Sci Inst Plasma Phys Hefei 230031 Anhui Peoples R China Univ Sci & Technol China Hefei 230026 Anhui Peoples R China Hefei Comprehens Natl Sci Ctr Inst Energy Hefei 230071 Anhui Peoples R China
Breast cancer has become the most diagnosed cancer in the world. Microwave detection the breast tumor is attractive due to its high dielectric property contrast between different tissues of tumor. In this paper, we pr... 详细信息
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Depth resolved pencil beam radiography using AI - a proof of principle study
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JOURNAL OF INSTRUMENTATION 2022年 第6期17卷 P06012页
作者: Haggstrom, I Carter, L. M. Fuchs, T. J. Kesner, A. L. Mem Sloan Kettering Canc Ctr Dept Radiol 1275 York Ave New York NY 10021 USA Mem Sloan Kettering Canc Ctr Dept Med Phys 1275 York Ave New York NY 10021 USA Mt Sinai Sch Med Hasso Plattner Inst Digital Hlth Dept Pathol 1468 Madison Ave New York NY USA
Aims: clinical radiographic imaging is seated upon the principle of differential keV photon transmission through an object. At clinical x-ray energies the scattering of photons causes signal noise and is utilized sole... 详细信息
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A new limited-angle CT reconstruction algorithm based on the local anisotropic total variation restoration of continuity
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JOURNAL OF INSTRUMENTATION 2022年 第12期17卷 P12018页
作者: Xiao, Yu Zhong, Wang Li, Yongcun Hu, Xiaofang Xu, Feng Univ Sci & Technol China Chinese Acad Sci Key Lab Mech Behav & Design Mat 96 JinZhai Rd Hefei 230027 Peoples R China Taiyuan Univ Technol Coll Mech Shanxi Key Lab Mat Strength & Struct Impact 79 Yingzexi Dajie Taiyuan 030024 Peoples R China
A new limited-angle computed tomography(CT) reconstruction algorithm based on local detail information restoration in the CT image projection domain was proposed in this paper. The lost projection information could be... 详细信息
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