Tomography Stocks List
Symbol | Grade | Name | % Change | |
---|---|---|---|---|
KMK | A | Kromek Group Plc | 7.14 | |
GHH | B | Gooch & Housego Plc | 1.45 | |
SPI | B | Spire Healthcare Group P | -0.20 | |
0LNG | B | Koninklijke Philips NV | -1.39 | |
0GZK | C | Ion Beam Applications S.A. | 0.00 |
Related Industries: Electronic Components Medical Care Medical Devices
Symbol | Grade | Name | Weight | |
---|---|---|---|---|
CB5 | A | Amundi MSCI Europe Banks UCITS ETF | 3.33 | |
HSXU | B | HSBC Europe Ex UK Sustainable Equity UCITS ETF EUR (Dist) | 2.28 | |
DOCG | F | L&G Healthcare Breakthrough UCITS ETF | 1.77 | |
DOCT | F | L&G Healthcare Breakthrough UCITS ETF | 1.77 | |
IAEX | B | iShares AEX UCITS ETF | 1.68 |
Compare ETFs
- Tomography
Tomography is imaging by sections or sectioning, through the use of any kind of penetrating wave. The method is used in radiology, archaeology, biology, atmospheric science, geophysics, oceanography, plasma physics, materials science, astrophysics, quantum information, and other areas of science. The word tomography is derived from Ancient Greek τόμος tomos, "slice, section" and γράφω graphō, "to write" (see also Etymology). A device used in tomography is called a tomograph, while the image produced is a tomogram.
In many cases, the production of these images is based on the mathematical procedure tomographic reconstruction, such as X-ray computed tomography technically being produced from multiple projectional radiographs. Many different reconstruction algorithms exist. Most algorithms fall into one of two categories: filtered back projection (FBP) and iterative reconstruction (IR). These procedures give inexact results: they represent a compromise between accuracy and computation time required. FBP demands fewer computational resources, while IR generally produces fewer artifacts (errors in the reconstruction) at a higher computing cost.Although MRI and ultrasound are transmission methods, they typically do not require movement of the transmitter to acquire data from different directions. In MRI, both projections and higher spatial harmonics are sampled by applying spatially-varying magnetic fields; no moving parts are necessary to generate an image. On the other hand, since ultrasound uses time-of-flight to spatially encode the received signal, it is not strictly a tomographic method and does not require multiple acquisitions at all.
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