microct video rotate 3d reconstructed image

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This produces a single radiographic image similar to an X-ray you would get for a broken bone at the doctor. The unabsorbed X-rays are recorded by the detector. T = the thickness of the absorbing material, in chosen distance units e.g. I 1 = X-ray intensity after passing through objectĮ = the exponential coefficient (2.7182818……….) I 0 = X-ray intensity before reaching object

The general form of X-ray attenuation is: The X-rays propagate through the sample where some of the X-ray photons are absorbed and others are transmitted to the detector. If there is no differential absorption, the sample result comes out as a uniform gray level. Micro-CT requires that there are both: Partial Absorption, meaning some X-ray photons are absorbed in the material while others are transmitted to the detector, and Differential Absorption, meaning that different materials within the object have different absorption characteristics to give contrast. (Why is a Large Field of View Important?) X-ray Absorption Through the Sample The advantage of a cone is the ability to capture a larger volume in a single scan rotation. Prior to Feldkamp, Davis, and Kress’s famous 1984 publication on Practical Cone-Beam Algorithm, X-ray geometries were mostly limited to point or a fan beam. The emitted X-rays are in the shape of a cone where the origination point is a spot on the target and the emitted beam diverges out in a conical shape. The finer the electron beam can be focused on the target, the smaller the ‘spot’ size of the x-rays will be which leads to higher resolution images. For more details on how X-rays are generated see (How Are X-rays Generated). Below is a depiction of the basic anatomy of an X-ray source. The target emits x-rays which are then transmitted to the sample. For laboratory CT systems, X-rays are generated by directing electrons produced in a cathode at a target (Tungsten, copper, etc). Let’s first start by examine the X-ray source.

#MICROCT VIDEO ROTATE 3D RECONSTRUCTED IMAGE SERIES#

If we look at the Micro-CT process in more depth and examine some of the physical aspects, the process can be expanded to four steps:ģ) Rotate the Sample to Acquire a Series of Projection ImagesĤ) Reconstruct the Projection Images into Virtual Slices MicroCT x-ray source schematic Generate X-rays

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If you would like to see how Micro-CT can support your research, we invite you to submit a sample to our lab for a FREE first scan. Figure 3 3D Model of a Micro-CT Scan of a Mandible The Process of Acquiring a Micro-CT Scan The reconstructed images can then be taken and modeled into 3D volumetric objects for quantitative analysis or visualization (Figure 3). This series of images is typically called the “reconstructed images” or c”ross sections” (figure 2).

#MICROCT VIDEO ROTATE 3D RECONSTRUCTED IMAGE SOFTWARE#

The projection images are then processed using computer software (typically based on a modified Feldkamp Cone Beam reconstruction algorithm) to show the internal structure of the object nondestructively. This procedure is iterated until the sample has rotated 180 or 360 degrees, producing a series of projection images. The sample is then rotated by a fraction of a degree and another projection image is taken at the new position. X-rays are emitted from an X-ray generator, travel through a sample, and are recorded by a detector on the other side to produce radiograph (known as projection image- Figure 1). Micro-Computed tomography is an X-ray transmission image technique. For more information on our products, lab services, and support, visit The following provides a broad overview of Micro-CT:

We provide information, instruments, training, and support to help advance research using these transformative technologies. General Basis of Micro-CTĪt Micro Photonics, our Micro-CT experts help researchers to select and customize an appropriate instrument for their labs. This is useful for nondestructively visualizing and analyzing the internal structure of materials (composites, metals, bones, soft tissues, geological cores, manufacture objections, etc) and living animals (mice, rats, rabbits, etc). With 2D X-ray systems you can see what is in an object, while with 3D X-ray systems, such as the Micro-CT, you can see where those things are located. Micro-CT / Nano-CT are more like the medical CT systems where you get slice-by-slice information, but without having to cut up the sample. What we typically think of as X-ray vision is similar to planar X-ray images that you get in a hospital when you break an arm. It allows you to see the inside of something without having to destroy the object itself. Micro-CT, and the higher resolution Nano-CT, is like having X-ray vision, only better. What is Micro-Computed Tomography (micro-CT)?

Microct video rotate 3d reconstructed image