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The first computed tomography (CT) system capable of producing images of any part of the human body without the need for a cumbersome "water tank" was the Automatic Computerized Transverse Axial (ACTA) scanner, designed by Dr. Robert S. Ledley, DDS, at Georgetown University. This revolutionary machine was equipped with 30 photomultiplier tubes ...
Photon-counting computed tomography. Photon-counting computed tomography ( PCCT) is a form of X-ray computed tomography (CT) in which X-rays are detected using a photon-counting detector (PCD) which registers the interactions of individual photons. By keeping track of the deposited energy in each interaction, the detector pixels of a PCD each ...
The payment card interchange fee and merchant discount antitrust litigation is a United States class-action lawsuit filed in 2005 by merchants and trade associations against Visa, Mastercard, and numerous financial institutions that issue payment cards. The suit was filed because of price fixing and other allegedly anti-competitive trade ...
When a business charges a fee for a form of payment, whether in person, online or by phone, it’s called a surcharge. Credit card surcharges are applied when you use your credit card to make a ...
Credit card imprinter. Manual card imprinter. A credit card imprinter, colloquially known as a ZipZap machine, click-clack machine or Knuckle Buster, is a manual device that was used by merchants to record credit card transactions before the advent of payment terminals. [ 1]
Low-dose high-resolution (1.25 mm) chest CT. HRCT is performed using a conventional CT scanner. However, imaging parameters are chosen so as to maximize spatial resolution: [1] a narrow slice width is used (usually 1–2 mm), a high spatial resolution image reconstruction algorithm is used, field of view is minimized, so as to minimize the size of each pixel, and other scan factors (e.g. focal ...
Spinning tube, commonly called spiral CT, or helical CT, is an imaging technique in which an entire X-ray tube is spun around the central axis of the area being scanned. These are the dominant type of scanners on the market because they have been manufactured longer and offer a lower cost of production and purchase.
The Consumer Financial Protection Bureau finalized a rule limiting credit card late fees to $8. The move could save 45 million people an average $220 per year on late fees.