AIMC Topic: Phantoms, Imaging

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Robot-assisted automatic ultrasound calibration.

International journal of computer assisted radiology and surgery Jan 11, 2016
PURPOSE: Ultrasound (US) calibration is the process of determining the unknown transformation from a coordinate frame such as the robot's tooltip to the US image frame and is a necessary task for any robotic or tracked US system. US calibration requi...
Ultrasonography Robotics Calibration Phantoms, Imaging Humans
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Image quality and effective dose of a robotic flat panel 3D C-arm vs computed tomography.

The international journal of medical robotics + computer assisted surgery : MRCAS Dec 18, 2015
BACKGROUND: The aim of this study was to determine the effective dose and corresponding image quality of different imaging protocols of a robotic 3D flat panel C-arm in comparison to computed tomography (CT).
Titanium Cadaver Observer Variation Radiation Dosage Imaging, Three-Dimensional Humans Image Processing, Computer-Assisted Female Tomography, X-Ray Computed Robotics Animals Male Swine Pedicle Screws Phantoms, Imaging Thermoluminescent Dosimetry
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Fast Multiclass Dictionaries Learning With Geometrical Directions in MRI Reconstruction.

IEEE transactions on bio-medical engineering Nov 25, 2015
OBJECTIVE: Improve the reconstructed image with fast and multiclass dictionaries learning when magnetic resonance imaging is accelerated by undersampling the k-space data.
Subtraction Technique Image Enhancement Phantoms, Imaging Data Compression Algorithms Humans Brain Machine Learning Magnetic Resonance Imaging Reproducibility of Results Sample Size Sensitivity and Specificity Artifacts Pattern Recognition, Automated
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A Robotic Ultrasound Scanner for Automatic Vessel Tracking and Three-Dimensional Reconstruction of B-Mode Images.

IEEE transactions on ultrasonics, ferroelectrics, and frequency control Nov 9, 2015
Locating and evaluating the length and severity of a stenosis is very important for planning adequate treatment of peripheral arterial disease (PAD). Conventional ultrasound (US) examination cannot provide maps of entire lower limb arteries in 3-D. W...
Male Ultrasonography Imaging, Three-Dimensional Robotics Femoral Artery Phantoms, Imaging Humans Reproducibility of Results Adult
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Knowledge-based iterative model reconstruction: comparative image quality and radiation dose with a pediatric computed tomography phantom.

Pediatric radiology Nov 6, 2015
BACKGROUND: CT of pediatric phantoms can provide useful guidance to the optimization of knowledge-based iterative reconstruction CT.
Female Reproducibility of Results Sensitivity and Specificity Male Humans Machine Learning Computer Simulation Tomography, X-Ray Computed Subtraction Technique Radiation Protection Radiation Dosage Phantoms, Imaging Radiographic Image Enhancement Radiation Exposure Child, Preschool Models, Statistical Knowledge Bases
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Toward Standardized Acoustic Radiation Force (ARF)-Based Ultrasound Elasticity Measurements With Robotic Force Control.

IEEE transactions on bio-medical engineering Nov 2, 2015
OBJECTIVE: Acoustic radiation force (ARF)-based approaches to measure tissue elasticity require transmission of a focused high-energy acoustic pulse from a stationary ultrasound probe and ultrasound-based tracking of the resulting tissue displacement...
Robotics Equipment Design Phantoms, Imaging Elasticity Imaging Techniques Biomechanical Phenomena Male Abdomen Humans
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NEURAL NETWORK MODELLING OF CARDIAC DOSE CONVERSION COEFFICIENT FOR ARBITRARY X-RAY SPECTRA.

Radiation protection dosimetry Oct 28, 2015
In this article, an approach to compute the dose conversion coefficients (DCCs) is described for the computational voxel phantom 'High-Definition Reference Korean-Man' (HDRK-Man) using artificial neural networks (ANN). For this purpose, the voxel pha...
Computer Simulation Republic of Korea Male Signal Processing, Computer-Assisted Heart Programming Languages Monte Carlo Method Humans Neural Networks, Computer Software Body Size Tissue Distribution Photons Phantoms, Imaging X-Rays
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An Inversion Scheme for Hybrid Fluorescence Molecular Tomography Using a Fuzzy Inference System.

IEEE transactions on medical imaging Sep 1, 2015
The imaging performance of fluorescence molecular tomography (FMT) improves when information from the underlying anatomy is incorporated into the inversion scheme, in the form of priors. The requirement for incorporation of priors has recently driven...
Tomography, Optical Mice, Nude Molecular Imaging Phantoms, Imaging Animals Image Processing, Computer-Assisted Mice Fuzzy Logic
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Robotic radiosurgery system patient-specific QA for extracranial treatments using the planar ion chamber array and the cylindrical diode array.

Journal of applied clinical medical physics Jul 8, 2015
Robotic radiosurgery system has been increasingly employed for extracranial treatments. This work is aimed to study the feasibility of a cylindrical diode array and a planar ion chamber array for patient-specific QA with this robotic radiosurgery sys...
Quality Assurance, Health Care Radiotherapy Dosage Radiotherapy, Intensity-Modulated Humans Radiosurgery Lung Neoplasms Monte Carlo Method Algorithms Robotics Phantoms, Imaging Radiotherapy Planning, Computer-Assisted Radiometry Radiotherapy Setup Errors
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Three-dimensional dictionary-learning reconstruction of (23)Na MRI data.

Magnetic resonance in medicine May 19, 2015
PURPOSE: To reduce noise and artifacts in (23)Na MRI with a Compressed Sensing reconstruction and a learned dictionary as sparsifying transform.
Male Brain Phantoms, Imaging Female Imaging, Three-Dimensional Young Adult Sodium Isotopes Magnetic Resonance Imaging Humans Adult Machine Learning Algorithms
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