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This technology is the fastest generation of CT scanner to date. Third-generation spiral CT designs, especially those with 64 detector rows, 3×360°/sec rotation speeds, and designed for cardiac imaging, are largely replacing the EBT design from a commercial and medical perspective. However, electron beam CT still offers sweep speeds of ...
Mar. 26—By TARA WYATT Bluefield Daily Telegraph PRINCETON — A new and affordable CT scanner is now available for coronary CTA examination to those wanting reassurance with their cardiac health ...
The lease with General Electric for a GoldSeal Revolution EVO EX scanner is for seven years and will cost the district about $871,300. The new scanner will be delivered in time to be installed in ...
Compared to most other diagnostic imaging procedures, CT scans result in relatively high radiation exposure. This exposure may be associated with a very small increase in cancer risk. The question is whether that risk is outweighed by the benefits of diagnosis and therapy [8] The procedure has a low rate of finding disease.
Several methods that can reduce the exposure to ionizing radiation during a CT scan exist. [120] New software technology can significantly reduce the required radiation dose. New iterative tomographic reconstruction algorithms (e.g., iterative Sparse Asymptotic Minimum Variance) could offer super-resolution without requiring higher radiation ...
Though CT uses a higher amount of ionizing x-radiation than diagnostic x-rays (both utilising X-ray radiation), with advances in technology, levels of CT radiation dose and scan times have reduced. [9] CT exams are generally short, most lasting only as long as a breath-hold, Contrast agents are also often used, depending on the tissues needing ...
A concern is the potential for CT to contribute to radiation-induced cancer and in 2007 it was estimated that 0.4% of current cancers in the United States were due to CTs performed in the past, and that in the future this figure may rise to 1.5–2% based on historical rates of CT usage. [59]
As an example, each mm 2 of a CT detector may receive several hundred million photon interactions per second during a scan. [ 4 ] To avoid saturation in areas where little material is present between the X-ray source and the detector, the pulse resolving time must be small compared to the average time between photon interactions in a pixel.