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REAL-TIME X-RAY IMAGE PROCESSING; TECHNIQUES FOR SENSITIVITY IMPROVEMENT USING LOW-COST EQUIPMENT
"... Traditionally, real-time x-ray inspection systems have used standard video camera technology in conjunction with an image intensifier or phosphor screen [1]. Less often, image processing and image analysis capabilities are provided in expensive, turnkey systems. Such systems typically allow for real ..."
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Traditionally, real-time x-ray inspection systems have used standard video camera technology in conjunction with an image intensifier or phosphor screen [1]. Less often, image processing and image analysis capabilities are provided in expensive, turnkey systems. Such systems typically allow
Advances in Computational Methods for X-Ray Optics III, 92090A; References
"... Introduction and Objectives Transition metal concentrations in the central nervous system (CNS) are implicated in neurodegenerative diseases such as Alzheimer's, Parkinson's and Multiple Sclerosis. A common symptom of these diseases is demyelination, which is the degradation of the myelin ..."
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their reputation not only at synchrotron beam lines but also as an reliable laboratory equipment for imaging and tomography, with a resolution better than 50 nm. Using a system setup for hard x-ray transmission microscopy with long distance of more than 10 mm on each side between condenser optics, sample
3D-COMPUTED TOMOGRAPHY OVER FOUR ORDERS OF MAGNITUDE OF X-RAY ENERGIES
"... several tomographs from high resolution computed tomography with synchrotron radiation at the Berlin Electron Storage Ring Company for Synchrotron Radiation (BESSY) in the energy range from 8 to 80 keV, over laboratory equipment using different kind of micro focus X-ray tubes (a 100 kV transmission ..."
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to a coated fiber taper, to an X-ray image intensifier or to a scintillating plate by a lens optic. The limits of detectors are shown together with the applied methods to reduce artifacts. The applications cover a broad spectrum analyzing the structure and assembly of rare small insects, characterizing
Three-dimensional fdtd analysis of a pulsed microwave confocal system for breast cancer detection: Design of an antenna-array element
- IEEE Trans. Antennas Propagat
, 1999
"... Abstract—We are investigating a new ultrawide-band (UWB) microwave radar technology to detect and image early-stage malignant breast tumors that are often invisible to X rays. In this paper, we present the methodology and initial results of three-dimensional (3-D) finite-difference time-domain (FDTD ..."
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Cited by 31 (3 self)
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Abstract—We are investigating a new ultrawide-band (UWB) microwave radar technology to detect and image early-stage malignant breast tumors that are often invisible to X rays. In this paper, we present the methodology and initial results of three-dimensional (3-D) finite-difference time
Use of a C-arm system to generate true three-dimensional computed rotational angiograms: preliminary in vitro and in vivo results
- AJNR Am. J. Neuroradiol
, 1997
"... PURPOSE: To evaluate the potential use of a C-arm mounted X-ray image intensifier (XRII) system to generate three-dimensional computed rotational angiograms during interventional neuroradiologic procedures. METHODS: A clinical angiographic system was modified to allow collection of sufficient views ..."
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Cited by 9 (2 self)
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PURPOSE: To evaluate the potential use of a C-arm mounted X-ray image intensifier (XRII) system to generate three-dimensional computed rotational angiograms during interventional neuroradiologic procedures. METHODS: A clinical angiographic system was modified to allow collection of sufficient views
Image Registration Combining Digital Radiography and Computer-Tomography Image Data
"... X-Rays are used as reliable technique for today’s quality assurance of safety critical parts, for example in the automotive or in the aerospace industry. Radiography systems are used to ensure a high throughput in the field of hundred percent testing of a batch. In such systems digital images are ac ..."
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are acquired by using either flat-panel detectors with a high dynamic range or image intensifiers including nearly noiseless, light-sensitive CCDsensors inside. The resulting digital X-Ray images are perspective-projections of the threedimensional density information of the test part onto the two-dimensional
Lung Nodule Imaging using Micro CT
"... Abstract-- We are developing a micro-computed tomography for imaging lung nodules. The purpose is to enhance the physician performance in accessing the micro architecture of the nodule for classification between malignant and benign nodules. The basic components of the micro CT consist of a microfoc ..."
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microfocus X-ray source, a specimen manipulator, an image intensifier detector coupled to charge-coupled device camera and an image processing unit. Three-dimensional image reconstruction was performed on a slice by slice technique. A standard fan-beam convolution and back-projection algorithm was used
Real-Time Restoration of Lens Distorted Images by Digital Image Processing
, 1994
"... This paper describes a real-time system for image acquisition, where images are corrected for lens- distortion. Three kinds of distortion can be corrected by the system: barrel, pincushion and pocket-handkerchief. Applications can be found in very high light-efficient systems where lenses with a lar ..."
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large numerical aperture produce barrel- or pincushion distortion. Examples are medical X-ray systems, where pincushion distortion is introduced by the curved output screen of the image intensifier. Another example can be found in digital copiers and scanners. Since distortion does not blur the image
3D reconstruction from projection matrices in a C-arm based 3D-angiography system
- In First International Conference on Medical Image Computing and Computer-Assisted Intervention (MICCAI
, 1998
"... Abstract. 3D reconstruction of arterial vessels from planar radiographs obtained at several angles around the object has gained increasing interest. The motivating application has been interventional angiography. In order to obtain a three-dimensional reconstruction from a C-arm mounted X-Ray Image ..."
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Cited by 8 (3 self)
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Abstract. 3D reconstruction of arterial vessels from planar radiographs obtained at several angles around the object has gained increasing interest. The motivating application has been interventional angiography. In order to obtain a three-dimensional reconstruction from a C-arm mounted X-Ray Image
Biomedical Imaging and Intervention Journal COMMENTARY Optimisation in fluoroscopy
, 2006
"... Optimisation of radiation protection in fluoroscopy is important since the procedure could lead to relatively high absorbed doses both in patients and personnel resulting in acute radiation injury. Optimisation procedures include adjustment of the fluoroscopy equipment such as exposure factors as we ..."
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as well as proper use of automatic brightness control and pulsed fluoroscopy. It is also important to gain the benefits of image processing and the higher sensitivity of flat panel detectors as compared to image intensifier-TV systems. Proper positioning of the patient with respect to detector and X-ray
Results 1 - 10
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