Showing 281 - 300 results of 305 for search '"The Phantom"', query time: 0.06s Refine Results
  1. 281

    Differential Microwave Imaging for Brain Stroke Followup by R. Scapaticci, O. M. Bucci, I. Catapano, L. Crocco

    Published 2014-01-01
    “…By means of a numerical analysis dealing with synthetic data generated for realistic anthropomorphic phantoms, we address some crucial issues for the method’s effectiveness. …”
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  2. 282

    A Safe Framework for Quantitative In Vivo Human Evaluation of Image Guidance by Piper C. Cannon, James M. Ferguson, E. Bryn Pitt, Jason A. Shrand, Shaan A. Setia, Naren Nimmagadda, Eric J. Barth, Nicholas L. Kavoussi, Robert L. Galloway, S. Duke Herrell, Robert J. Webster

    Published 2024-01-01
    “…We find average lesion centroid localization error with our IGS system to be 6.5 mm in vivo compared to our prior result of 3.0 mm in phantoms. <italic>Conclusions:</italic> The bystander protocol is a safe, effective method for testing in-development image guidance systems in human subjects.…”
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  3. 283

    Rapid diffused optical imaging for accurate 3D estimation of subcutaneous tissue features by Shanshan Cai, John Mai, Winn Hong, Scott E. Fraser, Francesco Cutrale

    Published 2025-02-01
    “…To standardize the performance, 3D-mDOI employs customized calibrations using physical tissue phantoms, to explore the system’s 3D reconstruction capabilities. …”
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  4. 284

    METHODOLOGY FOR DATA COLLECTION IN SIMULATED IRRADIATIONS USING MONTE CARLO TECHNIQUES ON DICOM IMAGES FOR X-RAY FLUORESCENCE EMISSIONS LOCALIZATION IN HIGH ATOMIC NUMBER MATERIALS by Nicolás E. Martín, F. Malano, Miguel Sofo Haro, M. Valente

    Published 2024-12-01
    “…We applied this methodology to localize nanoparticles in computer-generated phantoms, demonstrating its feasibility and versatility through Monte Carlo simulations and correlation with micro-tomography. …”
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  5. 285

    An Efficient Estimation Method for Reducing the Axial Intensity Drop in Circular Cone-Beam CT by Lei Zhu, Jared Starman, Rebecca Fahrig

    Published 2008-01-01
    “…The algorithm performance is evaluated using computer simulations on analytical phantoms. The reconstruction comparison with results using other existing algorithms shows that the proposed algorithm achieves a superior performance on the reduction of axial intensity drop artifacts with a high computation efficiency.…”
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  6. 286

    Estimation of Blood Pressure by Image-Free, Wearable Ultrasound by Ana Belen Amado Rey

    Published 2024-05-01
    “…We validated these algorithms in silico, in vitro, and ex vivo, where tissue and artery phantoms help emulate human physiology. In young subjects, an in silico pulse pressure (PP) correlation of 0.978 and a mean difference of (– 2.85 ± 2.57) mmHg at the radial artery were achieved. …”
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  7. 287

    Semiautomatic Algorithm for Lymph Node Analysis Corrected for Partial Volume Effects in Combined Positron Emission Tomography-Computed Tomography by Ralph A. Bundschuh, Markus Essler, Julia Dinges, Christian Berchtenbreiter, Jan Mariss, Axel Martínez-Möller, Gaspar Delso, Melanie Hohberg, Stephan G. Nekolla, Dominik Schulz, Sibylle I. Ziegler, Markus Schwaiger

    Published 2010-11-01
    “…The method was applied to 47 lymph nodes (30 patients) characterized as suspicious in 18 F-fluorodeoxyglucose-PET-CT. In phantoms, PVC improved significantly the measured uptake of the lesion. …”
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  8. 288

    Robot-assisted Neuroendoscopy: Surgeon’s Third Hand – a Proof of Concept Study by Karnam Murali, Rychen Jonathan, Guzman Raphael, Cattin Philippe C., Rauter Georg, Gerig Nicolas

    Published 2024-09-01
    “…We also quantitatively identified the range of forces applied by the endoscope to act as a retractor on two brain phantoms while visualizing the surgical site. With our proof of concept study, we could show the feasibility of robotic assistance in neuroendoscopy. …”
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  9. 289

    Kinect-Based Correction of Overexposure Artifacts in Knee Imaging with C-Arm CT Systems by Johannes Rausch, Andreas Maier, Rebecca Fahrig, Jang-Hwan Choi, Waldo Hinshaw, Frank Schebesch, Sven Haase, Jakob Wasza, Joachim Hornegger, Christian Riess

    Published 2016-01-01
    “…Artifacts at both knee phantoms are reduced significantly in the reconstructed data and a major part of the truncated regions is restored. …”
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  10. 290

    Alternating magnetic field guiding system for MNP hyperthermia treatment of deep-seated cancers by Robert V. Stigliano, Ilona Danelyan, Giga Gabriadze, Levan Shoshiashvili, Ian Baker, P. Jack Hoopes, Roman Jobava, Fridon Shubitidze

    Published 2024-12-01
    “…Objectives Demonstrate the potential application of a novel, endoscope-like device to guide and focus an alternating magnetic field (AMF) for treating deep-seated cancers via magnetic nanoparticle hyperthermia (MNPH).Methods AMF delivery, MNP activation, and eddy current distribution characteristics are investigated through experimental studies in phantoms and computational simulations using a full 3-dimensional human model. …”
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  11. 291

    Autonomous robotic ultrasound scanning system: a key to enhancing image analysis reproducibility and observer consistency in ultrasound imaging by Xin-Xin Lin, Ming-De Li, Si-Min Ruan, Wei-Ping Ke, Hao-Ruo Zhang, Hui Huang, Shao-Hong Wu, Mei-Qing Cheng, Wen-Juan Tong, Hang-Tong Hu, Dan-Ni He, Rui-Fang Lu, Ya-Dan Lin, Ming Kuang, Ming Kuang, Ming-De Lu, Ming-De Lu, Li-Da Chen, Qing-Hua Huang, Qing-Hua Huang, Wei Wang

    Published 2025-02-01
    “…PurposeThis study aims to develop an autonomous robotic ultrasound scanning system (auto-RUSS) pipeline, comparing its reproducibility and observer consistency in image analysis with physicians of varying levels of expertise.Design/methodology/approachAn auto-RUSS was engineered using a 7-degree-of-freedom robotic arm, with real-time regulation based on force control and ultrasound visual servoing. Two phantoms were employed for the human-machine comparative experiment, involving three groups: auto-RUSS, non-expert (4 junior physicians), and expert (4 senior physicians). …”
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  12. 292

    Laser speckle contrast imaging with principal component and entropy analysis: a novel approach for depth-independent blood flow assessment by Yu. Surkov, P. Timoshina, I. Serebryakova, D. Stavtcev, I. Kozlov, G. Piavchenko, I. Meglinski, A. Konovalov, D. Telyshev, S. Kuznetcov, E. Genina, V. Tuchin

    Published 2025-01-01
    “…Experiments conducted on optical phantoms, with the vessel depths ranging from 0.6 to 2 mm, and in vivo studies on a laboratory mouse ear demonstrate substantial improvements in image contrast and resolution. …”
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  13. 293

    Noninvasive Tracking of Encapsulated Insulin Producing Cells Labelled with Magnetic Microspheres by Magnetic Resonance Imaging by Vijayaganapathy Vaithilingam, Mandy M. W. Yim, Jayne L. Foster, Timothy Stait-Gardner, Jose Oberholzer, Bernard E. Tuch

    Published 2016-01-01
    “…In vitro MRI demonstrated that single microcapsules as well as clusters of encapsulated MM-labelled cells could be visualised clearly in agarose gel phantoms. In vivo encapsulated MM-labelled MIN6 could be visualised more clearly within the peritoneal cavity as discrete hypointensities using the high power 11.7 T but not the clinical grade 3 T MRI. …”
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  14. 294

    Enhancing signal-to-noise ratio in real-time LED-based photoacoustic imaging: A comparative study of CNN-based deep learning architectures by Avijit Paul, Srivalleesha Mallidi

    Published 2025-02-01
    “…Through experimentation with in vitro phantoms, ex vivo mouse organs, and in vivo tumors, we compare basic convolutional autoencoder and U-Net architectures, explore hierarchical depth variations within U-Net, and evaluate advanced variants of U-Net. …”
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  15. 295

    A hybrid setup for rodent hyperpolarized metabolic imaging using a clinical magnetic resonance scanner by Ditte Bentsen Christensen, Ingeborg Sæten Skre, Jan Henrik Ardenkjær-Larsen, Mor Mishkovsky, Mathilde H Lerche

    Published 2025-03-01
    “…We detail the experimental procedure, provide practical guidance, and showcase the capabilities of the system with example data from mouse brain imaging.This hybrid setup bridges the gap between clinical and pre-clinical research, enabling iterative testing of equipment, imaging sequences, and hypotheses across phantoms, in vivo rodent models and clinical settings. …”
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  16. 296

    Dose Optimization with mAs Reduction of 15% using Computed Radiography on Radiographic Examinations Pelvic Ap Projection by Intan Cahya, Muhammad Irsal, Nursama Heru A., Shinta Gunawati S., Mahfud Edy Widiatmoko

    Published 2022-07-01
    “…Method: Research is conducted quantitatively and used experimental approach with an analysis of 15% mAs reduction from the standard mAs value on AP projection pelvic examination on radiation dose and image quality using anthropomorphic phantoms. The radiation dose analysis uses the exposure index indicator. …”
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  17. 297

    Cross-sectional imaging of speed-of-sound distribution using photoacoustic reversal beacons by Yang Wang, Danni Wang, Liting Zhong, Yi Zhou, Qing Wang, Wufan Chen, Li Qi

    Published 2025-02-01
    “…We validate the feasibility of the proposed method through simulations, phantoms, and ex vivo biological tissue tests. Experimental results demonstrate that our approach can achieve accurate reconstruction of SOS distribution. …”
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  18. 298

    Ultra-sparse reconstruction for photoacoustic tomography: Sinogram domain prior-guided method exploiting enhanced score-based diffusion model by Zilong Li, Jiabin Lin, Yiguang Wang, Jiahong Li, Yubin Cao, Xuan Liu, Wenbo Wan, Qiegen Liu, Xianlin Song

    Published 2025-02-01
    “…The performance of the method is evaluated using blood vessel simulation, phantoms, and in vivo experimental data. Subsequently, the transformation of the reconstructed sinograms into the image domain is achieved through the delay-and-sum method, enabling a thorough assessment of the proposed method. …”
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  19. 299

    Design of a wasp-inspired biopsy needle capable of self-propulsion and friction-based tissue transport by Jette Bloemberg, Suzanne van Wees, Suzanne van Wees, Vera G. Kortman, Aimée Sakes

    Published 2025-01-01
    “…The needle prototype, constructed from nitinol rods and stainless steel rings, measures 3 mm in outer diameter and 1 mm in inner diameter. Testing in gelatin phantoms demonstrated efficient gelatin core transport (up to 69.9% ± 9.1% transport efficiency) and self-propulsion (0.842 ± 0.042 slip ratio). …”
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  20. 300

    When is synthetic sufficient? Ethical considerations and alternatives in simulation-based ultrasound education by Andrea J. Doyle, Claire M. Condron

    Published 2025-01-01
    “…Resistance related to clinical relevance and preference for animal-based SBE is a persisting challenge that might be overcome through the development of clinically and anatomically relevant tissue-mimicking materials, like those previously developed for other applications such as quality assurance phantoms in diagnostic imaging. The involvement of knowledge or end-user engagement, along with evidence-based design solutions, is crucial to catalyse a paradigm shift in a discipline deeply entrenched in tradition. …”
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