Tag: "ray" at medical news
Visual Environment Can Affect Even Healthy Eyes --- Nature Works With Nuture For Good Vision
... Refraction refers to the deflection of a ray
of light as it enters the eye. As it goes in the light is bent or refracted. With normal vision, the image of a distant target comes into focus on the surface of the retina, located at the back of the eye. In a myopic (nearsighted) eye, the image co...
Chemical society convenes regional meeting in Lawrence, Kan., Oct. 23-25
...email@example.com ) Leaching of lead from cathode ray
tubes (Ralph W. Sheets, Southwest Missouri State University, Department of Chemistry, Springfield, firstname.lastname@example.org ) Thursday, Oct. 24 10 a.m.-10 p.m. Kansas, Centennial, English and Big 12 rooms, and the Ballroom Representational competence ...
Story tips from DOE's Oak Ridge National Laboratory Nov 2002
... a Y-12 patented technology that enables the gamma ray
detector also to detect neutrons, thus eliminating the need for a second detector within the instrument. [Contact: Zane Bell] PHYSICS Magic nuclei x 2 . . . Researchers at ORNL are for the first time probing the storied "doubly magic" nuclei -- ra...
New breast scanner can detect early signs of cancer
...ssue and can be detected non-invasively by a gamma ray
camera. "Nuclear imaging tracers like sestamibi s... be too small for other scanners to detect." Gamma ray
tracers such as sestamibi have a short half-life and are broken down quickly by the liver and excret...
3D neutron-based medical imaging, 4D lung scans, and hitting a moving tumor
...utron is more damaging to the body than a single x ray
of equal energy, the researchers' preliminary calculations indicate that an accurate test for breast cancer could be performed at a dose similar to that of a current mammography examination. As an intermediate step towards this goal, the group next ...
NASA awards $9.8 million NSCOR grant to UT Southwestern to study effects of space radiation exposure
...zed particles that make up a portion of the cosmic ray
background of space. These highly ionizing particles have the potential for severe health implications for astronauts. The information researchers obtain will be converted into quantitative risk assessment for the effects of radiation from space trav...