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where Size projection is the size of the projection that the object forms on the detector. On lumbar and chest radiographs , it is anticipated that ERMF is between 1.05 and 1.40. [ 6 ] Because of the uncertainty of the true size of objects seen on projectional radiography, their sizes are often compared to other structures within the body, such ...
An alternate version of MIP is Local maximum intensity projection. In this technique we don't take the global maximum value, but the first maximum value that is above a certain threshold. Because - in general - we can terminate the ray earlier this technique is faster and also can give better results in some settings as it approximates ...
Tomographic reconstruction: Projection, Back projection and Filtered back projection. Tomographic reconstruction is a type of multidimensional inverse problem where the challenge is to yield an estimate of a specific system from a finite number of projections. The mathematical basis for tomographic imaging was laid down by Johann Radon.
In the US, chest radiography includes a PA and Lateral with the patient standing or sitting up. Special projections include an AP in cases where the image needs to be obtained stat (immediately) and with a portable device, particularly when a patient cannot be safely positioned upright. Lateral decubitus may be used for visualization of air ...
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Optical projection tomography is a form of tomography involving optical microscopy. [1] The OPT technique is sometimes referred to as optical computed tomography (optical-CT) and optical emission computed tomography (optical-ECT) in the literature, to address the fact that the technique bears similarity to X-ray computed tomography (CT) and ...
Renders a flag icon and wikilink. Takes no parameters. Template parameters [Edit template data] Parameter Description Type Status No parameters specified See also Template:Country data Laos —for more options, such as historical flag variations where applicable Wikipedia:WikiProject Flag Template —for a complete discussion of the flag template system Wikipedia:Inline templates linking ...