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Fred "Rusty" Gage (born October 8, 1950) is an American geneticist known for his discovery of stem cells in the adult human brain. [1] Gage is a former president (2018–2023) of the Salk Institute for Biological Studies, [2] where he holds the Vi and John Adler Chair for Research on Age-Related Neurodegenerative Disease and works in the Laboratory of Genetics.
Within six months of Röntgen's discovery of the x-ray in 1895, physicians were using x-rays to diagnose and treat illness by physicians. However, it didn't take long for physicians to realize that to make the most effective use of their x-ray equipment, someone else had to handle the time-consuming tasks of performing x-ray examinations and developing films. 2
A person with a penetrating head injury may be evaluated using X-ray, CT scan, or MRI (MRI can only be used when the penetrating object would not be magnetic, because MRI uses magnetism and could move the object, causing further injury). [5] Surgery may be required to debride or repair the injury or to relieve excessive intracranial pressure. [5]
Taking an X-ray image with early Crookes tube apparatus, late 1800s.. For the first three decades of medical imaging's existence (1897 to the 1930s), there was no standardized differentiation between the roles that we now differentiate as radiologic technologist (a technician in an allied health profession who obtains the images) versus radiologist (a physician who interprets them).
An imaging phantom for determining CT performance Imaging phantom as seen on a medical ultrasound machine. Imaging phantom, or simply phantom, is a specially designed object that is scanned or imaged in the field of medical imaging to evaluate, analyze, and tune the performance of various imaging devices. [1]
North DeSoto's Gage Caskey is a Shreveport Times Athlete of the Week. The 6-foot-1, 250-pound Caskey has been a key component for the Griffins in their run to an 11-1 record and to the LHSAA Non ...
Viola Davis received the prestigious Cecil B. DeMille Award at the 2025 Golden Globes but did not get to give a speech during the main telecast.
The angle of incidence, in geometric optics, is the angle between a ray incident on a surface and the line perpendicular (at 90 degree angle) to the surface at the point of incidence, called the normal. The ray can be formed by any waves, such as optical, acoustic, microwave, and X-ray. In the figure below, the line representing a ray makes an ...