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A CT scan collects imaging data and produces a 3D reconstruction of the material being scanned. The actual image produced can be 3D or other forms of output depending on how it is processed.

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In producing Computed axial tomography (CT or CAT) scans, an x-ray beam is directed through the body and picked up by detectors. Because there are thousands images taken at many angles and positions, the process collects a great deal of data. There are image processing techniques that reassemble all this data into a detailed 3D reconstruction of the section of tissue scanned. This data can then be used to give "slices" of the tissue or create other types of images and perspectives with the full benefit of the 3D information. Thus, the essence of the success of this technique is the ability to create and process the immense about of data needed for the 3D reconstruction.

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Q: Does a ct scan give off a 3-d image?
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What does a CT scan give you?

A CT scan gives a 3D report of any normal or abnormalities in the internal organs scanned through a computerized system called Computerized Axial Tomography (CAT).


What is a 3D collage?

A collage is an art form using materials that can be glued, nailed, stapled, or sewn down to a surface to make an image. A collage is normally a flat surface with usually flat materials that form an image. A 3D collage has a three dimensional image.


How do 3D cameras produce a 3D image?

There are two cameras next to each other and they are combined in a video editing program. They make one video coloured blue and the other red to give the 3D effect. That's why you wear blue and red glasses. Now they have these new glasses that are just plane black, I don't know how they work though.


What is stereographic photography?

Stereographic photography is a system for giving the appearance of 3D images using two 2D (conventional) images. Two images are taken from slightly different points (separated by roughly the distance between two eyes; around 4 inches). Ideally, the two images are taken with two identical cameras with identical settings, but it is possible to get acceptable images using the one camera and simply moving it by a few inches between shots. With the two images available, some way is used to present the left image to the left eye and the right image to the right eye. There are several techniques: The "simplest" is to use a stereoscope - this device looks a little like a pair of binoculars; essentially it's two tubes, one for each eye, and the left image is at the end of the left tube, the right is at the end of the right tube. When held up to the eyes the images combine to form the stereoscopic image. Another system combines the two images into a colour separated single image (nowadays using software) which is viewed using special glasses with coloured filters so that the left image is only seen with the left eye, the right image only seen with the right. A similar system uses polarised glasses - the two images are projected simultaneously using a polarised filter (say horizontal in front of the left, vertical in front of the right) when viewed with matching glasses, again the left image goes to the left eye, the right image to the right. There are also "active" systems - the two images are projected alternating; first left, then right. Special glasses blank first the right eye then the left in synchronism with the projection. Provided the alternation is fast enough, the brain will combine the alternating image into a single 3D image. It should be noted that so called 3D films and images produced using these techniques aren't actually 3D; they're stereoscopic. In a true 3D image (such as a hologram) you can choose to focus on any part of the image and the eye can bring it into sharp focus. That isn't the case with a stereoscopic image - one of the reasons that some viewers report headaches when watching "3D" films is that the image is actually flat - projected onto a flat screen, but the eye "tries" to focus at different distances because it thinks it's seeing a 3D image, this creates eye strain.


Is going to see a 3D film any good if you already wear glasses that you would need to see the movie and does 3D take away from the experience?

No, however the two most popular 3D technology companies in the theaters are RealD and Master Image. So your glasses have to correspond to their format. I know a company, Visual World Products, that makes 3D glasses that work on both formats perfectly.

Related questions

How does an image from a CT scanner differ from a regular X-ray scanner?

The CT scan uses many X-ray images in thin slices to make a 3D image.


How do you turn an image into a 3D image?

Do you mean on a piece of paper? If so, you have to add perspective to it. One way to do that is to draw a background. Another way is to give your object a 3D illusion through techniques such as shadowing and shading.


How much a 3D xray cost?

Depends. 3D x-ray could mean CT scan, but there are many scans that are 3D. Around $1000 privately for a plain CT scan.


What does a CT scan give you?

A CT scan gives a 3D report of any normal or abnormalities in the internal organs scanned through a computerized system called Computerized Axial Tomography (CAT).


For what purpose would one buy 3D glasses?

3D glasses work by providing a separate image to each eye. The brain then combines the two images into a single image with 3D characteristics. The 3D process fools your brain into thinking it is seeing a 3D image, so it creates one for you.


What do you call a 3-dimensional photographic image?

a 3D image!


What does a Chix dog look like?

a chix dog is not a real dog but a 3d image on top of a 2d image a chix dog is not a real dog but a 3d image on top of a 2d image


How does tomography work?

Initially using the x rays to scan layers of the area in question, with computer assisted tomography a computer then analyzes data of all layers to construct a 3D image of the object.


Does Sony FPR 3D TV suffer from Flicker Image?

Since sony doesn't have FPR 3D tv so how it will have flicker image


Differences between 3D and 2D?

2D is an image drawn in the X, and Y dimensions. 3D is an image drawn in the X, Y, and Z dimensions, however most often what is referred to as 3D is a 2D simulation of 3D.


How do you make and print 3D photos without using 3d glasses?

You don't need glasses to make or print a 3D image. You will need a 3D camera, though. In order to view the image you will need glasses which ensure that the two slightly different perspectives reach the correct eye. This is what gives the impression of being 3D. Bear in mind that the only kind of 3D image possible on paper is an anaglyph (red/blue tinted). The brain interprets the image as 3D but there will be no colour, it will appear as "black and white".


Does SEM microscope produce 3D image?

No it doesn't , but you can make 3d image by taking three or four 2D scans of titled sample and then using image processing reconstruct it in 3-D