what is a voxel in imaging?
438201
A voxel is the volume element, defined in 3D space. Its dimensions are given by the pixel, together with the thickness of the slice (the measurement along the third axis). Slice thicknesses in clinical MRI vary from a maximum near 5 mm, achieved using 2D multislice imaging, to sub-mm, achieved with 3D scan techniques.
809090
SVD is a linear matrix transformation used for compressing images. Using SVD an image matrix is represented as the product of three matrices U, S, and V where S is a diagonal matrix whose diagonal entries are singular values of matrix A.
1065873
EACVI 3D Echocardiography Box 2D and 3D refer to the actual dimensions in a computer workspace. 2D is "flat", using the horizontal and vertical (X and Y) dimensions, the image has only two dimensions and if turned to the side becomes a line. 3D adds the depth (Z) dimension.
613607
Scout views are low-resolution radiographic images which are routinely performed for localizing a CT or MRI exam. They are frequently overlooked by the reporting Radiologist, however, scout views can present significant pathological findings which may or may not be included in the field ofview (FOV) of the study.
859078
A cube is a multidimensional structure that contains information for analytical purposes; the main constituents of a cube are dimensions and measures. ... A cell, in the cube, is defined by the intersection of dimension members and contains the aggregated values of the measures at that specific intersection.
1133893
Magnetic resonance imaging (MRI) scans use magnets and radio waves. Both produce still images of organs and body structures. PET scans use a radioactive tracer to show how an organ is functioning in real time. PET scan images can detect cellular changes in organs and tissues earlier than CT and MRI scans.
233137
CT scans use X-rays, radiation detectors and computers to produce images or "slices" through the body. In most cases, the images are in the axial plane -- a view looking down through the body. ... With proper processing, these other views are of similar quality to the original axial images.
1123997
Functional magnetic resonance imaging or functional MRI (fMRI) measures brain activity by detecting changes associated with blood flow. This technique relies on the fact that cerebral blood flow and neuronal activation are coupled. When an area of the brain is in use, blood flow to that region also increases.
908280
The ground is decorated with objects that are modeled using texture-mapped polygons. When Outcast was developed, the term "voxel engine", when applied to computer games, commonly referred to a ray casting engine (for example the VoxelSpace engine).
456047
Magnetic resonance imaging (MRI) scan. An MRI also produces images that allow doctors to see the location of a lung tumor and/or lung cancer metastases and measure the tumor's size. An MRI uses magnetic fields, not x-rays, to produce detailed images of the body.
206433
FMRI scans use the same basic principles of atomic physics as MRI scans, but MRI scans image anatomical structure whereas FMRI image metabolic function. Thus, the images generated by MRI scans are like three dimensional pictures of anatomic structure.
480782
An image is a 2-dimensional plane of pixels where every pixel have a domain of colors. ... Graphics (or Vector images) are elements that you can scale as large, or as small as you like, and will always appear smooth. This makes them ideal for logos and any branding elements used in banners and other large format prints.
198006
2D and 3D refer to the actual dimensions in a computer workspace. 2D is "flat", using the horizontal and vertical (X and Y) dimensions, the image has only two dimensions and if turned to the side becomes a line. 3D adds the depth (Z) dimension.
1142907
2D is "flat", using the horizontal and vertical (X and Y) dimensions, the image has only two dimensions and if turned to the side becomes a line. 3D adds the depth (Z) dimension. ... Three-dimensional echocardiography is based on real-time volumetric imaging that allows acquisition of pyramidal data sets.
1116059
X-Ray Scan Definition. An x-ray scan, also called radiography, is a diagnostic imaging technique that produces images of bones, providing clear detail of the bony structure.
97437
Both MRIs and CT scans can view internal body structures. However, a CT scan is faster and can provide pictures of tissues, organs, and skeletal structure. An MRI is highly adept at capturing images that help doctors determine if there are abnormal tissues within the body. MRIs are more detailed in their images.
898716
The occipital lobe is the visual processing area of the brain. It is associated with visuospatial processing, distance and depth perception, color determination, object and face recognition, and memory formation.