The delay in reporting the results reflected difficulties in reading more than 30, 000 ultrasound images utilizing a novel ultrasound imaging technology.

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Another 35% of sales derive from high-voltage integrated circuits that go into ultrasound imaging equipment made by General Electric, Philips and Siemens.

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Fifteen years ago, heart researchers started touting a possible shortcut: use fancy ultrasound imaging techniques to peer inside arteries and see whether a drug removes plaque.

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Another 35% of sales derive from high-voltage integrated circuits that go into ultrasound imaging equipment made by General Electric (nyse: GE - news - people ), Philips and Siemens (nyse: SI - news - people ).

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The method, still somewhat controversial, involves guiding a specialized needle into a tumor using precise ultrasound or CT imaging, then hitting it with roughly one ampere of radio current, just enough to fry it.

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More and more people are being diagnosed with these lesions as we use more medical imaging technology such as ultrasound, X-ray and CT scanning.

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Healthcare Systems, the largest division of GE Healthcare, consists of a broad portfolio of technology businesses including Computed Tomography, Magnetic Resonance, Ultrasound, Monitoring Solutions, Molecular Imaging, X-Ray, Interventional, Life Support, and Home Health.

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Indeed, ultrasound is being used not only for imaging, but also as a source of heat itself.

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George Sutherland, professor of cardiac imaging at St George's, London, shows how the portable handheld ultrasound scanner works.

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Magnetic resonance imaging is especially useful for characterizing the inside of a cyst that is indeterminate after ultrasound and CT.

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