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Low-dose high-resolution (1.25 mm) chest CT. HRCT is performed using a conventional CT scanner. However, imaging parameters are chosen so as to maximize spatial resolution: [1] a narrow slice width is used (usually 1–2 mm), a high spatial resolution image reconstruction algorithm is used, field of view is minimized, so as to minimize the size of each pixel, and other scan factors (e.g. focal ...
Tomosynthesis, also digital tomosynthesis (DTS), is a method for performing high-resolution limited-angle tomography at radiation dose levels comparable with projectional radiography. It has been studied for a variety of clinical applications, including vascular imaging, dental imaging, orthopedic imaging, mammographic imaging, musculoskeletal ...
Diffuse optical mammography is a non-invasive emerging technique that investigates the breast composition through spectral analysis. It is an example of diffuse optical imaging, still within the research environment. It showed promising results for breast cancer risk assessment, lesion characterization, therapy monitoring and prediction of ...
CT data sets have a very high dynamic range which must be reduced for display or printing. This is typically done via a process of "windowing", which maps a range (the "window") of pixel values to a grayscale ramp. For example, CT images of the brain are commonly viewed with a window extending from 0 HU to 80 HU.
Two forms of radiographic images are in use in medical imaging. Projection radiography and fluoroscopy, with the latter being useful for catheter guidance. These 2D techniques are still in wide use despite the advance of 3D tomography due to the low cost, high resolution, and depending on the application, lower radiation dosages with 2D technique.
A woman got a breast exam on live TV. No bra, no carefully draped gown, no blurring. On the British talk show This Morning, model Leeanne Adu, who wears a size 38JJ bra, disrobed and had Dr. Sara ...
Tia Mowry is left in tears and nearly speechless after learning the results of her routine mammogram.. In PEOPLE's exclusive first look at the upcoming episode of Tia Mowry: My Next Act, the 46 ...
Mammography is widely accepted as the first-line screening option for the detection of breast cancer, with a sensitivity for detection of cancer at around 85-90%. However, in patients with dense breast tissue or those with risk of breast cancer greater than 20%, the sensitivity of mammography drops significantly, with some studies reporting a ...