Oncology & Cancer

'Virtual biopsy' uses AI to help doctors assess lung cancer

Imperial researchers have used artificial intelligence (AI) to extract information about the chemical makeup of lung tumors from medical scans. For the first time, they have demonstrated how combining medical imaging with ...

Oncology & Cancer

Early detection may help Kentucky tamp down its lung cancer crisis

For the past decade, Kentucky researchers have promoted lung cancer screening, first recommended by the U.S. Preventive Services Task Force in 2013. These days the Bluegrass State screens more residents who are at high risk ...

Neuroscience

When symptoms suggest a stroke, but it's something else

What looks and feels like a stroke sometimes isn't. Instead, sudden weakness, difficulty speaking, vision changes, dizziness and other symptoms of a stroke might be caused by something else—a stroke mimic.

Surgery

Video: Advances in knee replacement surgery

An aging population drives the global demand for knee replacement surgery, exceeding 1 million procedures annually. In the U.S. alone, the need for knee replacements is projected to grow by 673%, reaching approximately 3.48 ...

Radiology & Imaging

Breakthrough X-ray technology goes from concept to medical standard

Detecting a deadly tumor as early as possible is vital to stopping its spread. However, creating the solution doesn't necessarily solve the problem—it needs to be widely adopted by medical professionals. That's why standards ...

Surgery

Advanced treatments target advanced shoulder issues

Shoulder pain, weakness and range of motion loss can keep you from the activities you need and love to do, whether it's lifting boxes on the job, putting away dishes in the kitchen or hitting that powerful tennis serve.

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Computed tomography

Computed tomography (CT) is a medical imaging method employing tomography. Digital geometry processing is used to generate a three-dimensional image of the inside of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. The word "tomography" is derived from the Greek tomos (slice) and graphein (to write). Computed tomography was originally known as the "EMI scan" as it was developed at a research branch of EMI, a company best known today for its music and recording business. It was later known as computed axial tomography (CAT or CT scan) and body section röntgenography.

CT produces a volume of data which can be manipulated, through a process known as "windowing", in order to demonstrate various bodily structures based on their ability to block the X-ray/Röntgen beam. Although historically the images generated were in the axial or transverse plane, orthogonal to the long axis of the body, modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures. Although most common in medicine, CT is also used in other fields, such as nondestructive materials testing. Another example is the DigiMorph project at the University of Texas at Austin which uses a CT scanner to study biological and paleontological specimens.

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