Výsledky vyhľadávania - "Image enhancement or restoration, e.g. from bit‐mapped to bit‐mapped creating a similar image"

Speed-of-sound compensated photoacoustic tomography for accurate imaging Autor Jose, Jithin, Willemink, Rene G. H., Steenbergen, Wiendelt, Slump, C. H., van Leeuwen, Ton G., Manohar, Srirang

“…) of the subject are neglected under the assumption of acoustic homogeneity. Biological tissue with spatially heterogeneous SOS cannot be accurately reconstructed under this assumption…”
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An iterative projection-based motion estimation and compensation scheme for head x-ray CT Autor Sun, Tao, Kim, Jung-Ha, Fulton, Roger, Nuyts, Johan

“… A multiresolution scheme was used to speed up the convergence of this joint estimation of the image and the motion of the subject…”
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Automated bone segmentation from dental CBCT images using patch-based sparse representation and convex optimization Autor Wang, Li, Chen, Ken Chung, Gao, Yaozong, Shi, Feng, Liao, Shu, Li, Gang, Shen, Steve G. F., Yan, Jin, Lee, Philip K. M., Chow, Ben, Liu, Nancy X., Xia, James J., Shen, Dinggang

“…Purpose: Cone-beam computed tomography (CBCT) is an increasingly utilized imaging modality for the diagnosis and treatment planning of the patients with…”
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Synchronized multiartifact reduction with tomographic reconstruction (SMART‐RECON): A statistical model based iterative image reconstruction method to eliminate limited‐view artifacts and to mitigate the temporal‐average artifacts in time‐resolved CT Autor Chen, Guang‐Hong, Li, Yinsheng

“…Purpose: In x‐ray computed tomography (CT), a violation of the Tuy data sufficiency condition leads to limited‐view artifacts. In some applications, it is…”
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SIFT‐based dense pixel tracking on 0.35 T cine‐MR images acquired during image‐guided radiation therapy with application to gating optimization Autor Mazur, Thomas R., Fischer‐Valuck, Benjamin W., Wang, Yuhe, Yang, Deshan, Mutic, Sasa, Li, H. Harold

“…Purpose: To first demonstrate the viability of applying an image processing technique for tracking regions on low‐contrast cine‐MR images acquired during…”
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Computer-aided detection of clustered microcalcifications in digital breast tomosynthesis: A 3D approach Autor Sahiner, Berkman, Chan, Heang-Ping, Hadjiiski, Lubomir M., Helvie, Mark A., Wei, Jun, Zhou, Chuan, Lu, Yao

“… A data set of two-view DBT of 72 breasts containing microcalcification clusters was collected from 72 subjects who were scheduled to undergo breast biopsy…”
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Evaluation of the OSC‐TV iterative reconstruction algorithm for cone‐beam optical CT Autor Matenine, Dmitri, Mascolo‐Fortin, Julia, Goussard, Yves, Després, Philippe

“…Purpose: The present work evaluates an iterative reconstruction approach, namely, the ordered subsets convex (OSC) algorithm with regularization via total…”
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A continuous surface reconstruction method on point cloud captured from a 3D surface photogrammetry system Autor Liu, Wenyang, Cheung, Yam, Sabouri, Pouya, Arai, Tatsuya J., Sawant, Amit, Ruan, Dan

“…Purpose: To accurately and efficiently reconstruct a continuous surface from noisy point clouds captured by a surface photogrammetry system (VisionRT)…”
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Characterization of statistical prior image constrained compressed sensing. I. Applications to time-resolved contrast-enhanced CT Autor Lauzier, Pascal Thériault, Chen, Guang-Hong

“…Purpose: Prior image constrained compressed sensing (PICCS) is an image reconstruction framework that takes advantage of a prior image to improve the image…”
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In vivo evaluation of a breast-specific magnetic resonance guided focused ultrasound system in a goat udder model Autor Payne, A., Todd, N., Minalga, E., Wang, Y., Diakite, M., Hadley, R., Merrill, R., Factor, R., Neumayer, L., Parker, D. L.

“…Purpose: This work further evaluates the functionality, efficacy, and safety of a new breast-specific magnetic resonance guided high intensity focused…”
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Anatomical noise in contrast-enhanced digital mammography. Part II. Dual-energy imaging Autor Hill, Melissa L., Mainprize, James G., Carton, Ann-Katherine, Saab-Puong, Sylvie, Iordache, Răzvan, Muller, Serge, Jong, Roberta A., Dromain, Clarisse, Yaffe, Martin J.

“…Purpose: Dual-energy (DE) contrast-enhanced digital mammography (CEDM) uses an iodinated contrast agent in combination with digital mammography (DM) to…”
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Partitioned edge-function-scaled region-based active contour (p-ESRAC): Automated liver segmentation in multiphase contrast-enhanced MRI Autor Oh, Jihun, Martin, Diego R., Hu, Xiaoping

“…Purpose: In multiphase contrast-enhanced magnetic resonance imaging (CE-MRI), liver segmentation is an important preprocessing step for the computer-aided…”
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Event-by-event respiratory motion correction for PET with 3D internal-1D external motion correlation Autor Chan, Chung, Jin, Xiao, Fung, Edward K., Naganawa, Mika, Mulnix, Tim, Carson, Richard E., Liu, Chi

“…Purpose: Respiratory motion during PET/CT imaging can cause substantial image blurring and underestimation of tracer concentration for both static and dynamic…”
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CNR considerations for rapid real‐time MRI tumor tracking in radiotherapy hybrid devices: Effects of B0 field strength Autor Wachowicz, K., De Zanche, N., Yip, E., Volotovskyy, V., Fallone, B. G.

“…Purpose: This work examines the subject of contrast‐to‐noise ratio (CNR), specifically between tumor and tissue background, and its dependence on the MRI field strength, B0…”
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Lung dynamic MRI deblurring using low‐rank decomposition and dictionary learning Autor Gou, Shuiping, Wang, Yueyue, Wu, Jiaolong, Lee, Percy, Sheng, Ke

“…Purpose: Lung dynamic MRI (dMRI) has emerged to be an appealing tool to quantify lung motion for both planning and treatment guidance purposes. However, this…”
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Characterization of a commercial hybrid iterative and model‐based reconstruction algorithm in radiation oncology Autor Price, Ryan G., Vance, Sean, Cattaneo, Richard, Schultz, Lonni, Elshaikh, Mohamed A., Chetty, Indrin J., Glide‐Hurst, Carri K.

“…Purpose: Iterative reconstruction (IR) reduces noise, thereby allowing dose reduction in computed tomography (CT) while maintaining comparable image quality to…”
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Assessment of contrast enhanced respiration managed cone-beam CT for image guided radiotherapy of intrahepatic tumors Autor Jensen, Nikolaj K. G., Stewart, Errol, Lock, Michael, Fisher, Barbara, Kozak, Roman, Chen, Jeff, Lee, Ting-Yim, Wong, Eugene

“…Purpose: Contrast enhancement and respiration management are widely used during image acquisition for radiotherapy treatment planning of liver tumors along…”
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High spatial resolution brain functional MRI using submillimeter balanced steady-state free precession acquisitiona Autor Wu, Pei-Hsin, Tsai, Ping-Huei, Wu, Ming-Long, Chuang, Tzu-Chao, Shih, Yi-Yu, Chung, Hsiao-Wen, Huang, Teng-Yi

“… with 0.37 mm3 voxel volume at 3.0 T. Methods: In fMRI experiments, full and unilateral visual field 5 Hz flashing checkerboard stimulations were given to healthy subjects…”
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Segmentation of malignant gliomas through remote collaboration and statistical fusion Autor Xu, Zhoubing, Asman, Andrew J., Singh, Eesha, Chambless, Lola, Thompson, Reid, Landman, Bennett A.

“… (typically based on magnetic resonance imaging). Expert delineation is the long-held gold standard for tumor segmentation, but is exceptionally resource intensive and subject to intrarater and inter-rater variability…”
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