Need to scan family photos, piles of documents, or expense receipts? Our experts have tested the best options for every scanning scenario. Since 2004, I have worked on PCMag’s hardware team, covering ...

Semiconductor detectors that directly measure the electrical signals produced by X-rays have hugely improved the resolution and contrast of computed tomography scanners. In the 1970s computed ...

How's your coronary artery calcium? What's that, you ask? Like the more familiar tests used to assess your risk of future heart problems—cholesterol, blood pressure and blood sugar tests, for ...