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The aim is to administer sufficient radiation to achieve an image scan of adequate quality, but not too much to cause harm to the patient.
WSJ: Scientists Find Safer Ways to Test Medical Procedures
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In MRI a more powerful magnet results in a sharper image and a quicker scan.
ECONOMIST: Inside story
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So whereas the nominal maximum width in an image is 20km, Pleiades can scan the ground rapidly to effectively build up a much wider swath at any given point.
BBC: Sharp-eyed Pleiades returns first pictures
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Sure, we've seen hypothetical approaches before, but this rendition lacks the mess and time requirements of previous methods by allowing customers to snap an image of their face, and then scan electronic tags of interesting looking makeup in order to dash their on-screen persona with whatever they please.
ENGADGET: Japanese department stores trialing virtual makeover machines
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King's College London, will be exhibiting a device that uses ultrasound technology to build up a 3D image before surgery, cutting out the need for a CT scan.
BBC: NEWS | Health | A bike for the paralysed
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The technique, called Image Guided Intensity Modulated Radiotherapy Treatment uses imaging provided by a CT scan to target the tumour before a powerful but precisely shaped radiation dose is administered.
BBC: 'Cinderella cancer' comes in from the cold
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How much is questionable, but the player did produce a better image when set to the native resolution of the set verse a standard progressive scan DVD player.
ENGADGET: HD Review: NeoDigits X5000 Networkable DVD player
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This new system, as with a traditional CAT scan, uses X-rays shot from multiple angles, and assembled into one three-dimensional image by a computer.
FORBES: Magazine Article