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High-resolution computed tomography ( HRCT) is a type of computed tomography (CT) with specific techniques to enhance image resolution. It is used in the diagnosis of various health problems, though most commonly for lung disease, by assessing the lung parenchyma. [ 1] On the other hand, HRCT of the temporal bone is used to diagnose various ...
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 record an approximate energy spectrum ...
Computed tomography angiography (also called CT angiography or CTA) is a computed tomography technique used for angiography —the visualization of arteries and veins —throughout the human body. Using contrast injected into the blood vessels, images are created to look for blockages, aneurysms (dilations of walls), dissections (tearing of ...
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 ...
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.
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 ...
Magnetic resonance angiography (MRA) is a group of techniques based on magnetic resonance imaging (MRI) to image blood vessels. Magnetic resonance angiography is used to generate images of arteries (and less commonly veins) in order to evaluate them for stenosis (abnormal narrowing), occlusions, aneurysms (vessel wall dilatations, at risk of rupture) or other abnormalities.
Quantitative computed tomography ( QCT) is a medical technique that measures bone mineral density (BMD) using a standard X-ray computed tomography (CT) scanner with a calibration standard to convert Hounsfield units (HU) of the CT image to bone mineral density values. [ 1] Quantitative CT scans are primarily used to evaluate bone mineral ...