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Health threats from cosmic rays are the dangers posed by cosmic rays to astronauts on interplanetary missions or any missions that venture through the Van-Allen Belts or outside the Earth's magnetosphere. [ 1][ 2] They are one of the greatest barriers standing in the way of plans for interplanetary travel by crewed spacecraft, [ 3][ 4][ 5] but ...
The following is a list of cancer types. Cancer is a group of diseases that involve abnormal increases in the number of cells , with the potential to invade or spread to other parts of the body. [ 1 ]
Radiation-induced cancer. Exposure to ionizing radiation is known to increase the future incidence of cancer, particularly leukemia. The mechanism by which this occurs is well understood, but quantitative models predicting the level of risk remain controversial. The most widely accepted model posits that the incidence of cancers due to ionizing ...
List of awareness ribbons. It has been suggested that this article be merged with Pink and blue ribbon. ( Discuss) Proposed since March 2024. This is a partial list of awareness ribbons. The meaning behind an awareness ribbon depends on its colors and pattern. Since many advocacy groups have adopted ribbons as symbols of support or awareness ...
Radiation therapy for a patient with a diffuse intrinsic pontine glioma, with radiation dose color-coded. It is estimated that half of the US' 1.2M invasive cancer cases diagnosed in 2022 received radiation therapy in their treatment program. [5] Different cancers respond to radiation therapy in different ways. [6] [7] [8]
M c (a) = the sex- and age-specific cancer mortality rate in the U.S. population; F = the tissue-weighted fluence; L = the LET; v = the fractional division between the assumption of the multiplicative and additive risk transfer models. For solid cancer, it is assumed that v=1/2 and for leukemia, it is assumed that v=0.
Actinic keratosis ( AK ), sometimes called solar keratosis or senile keratosis, [ 1][ 2] is a pre-cancerous [ 3] area of thick, scaly, or crusty skin. [ 4][ 5] Actinic keratosis is a disorder ( -osis) of epidermal keratinocytes that is induced by ultraviolet (UV) light exposure ( actin- ). [ 6] These growths are more common in fair-skinned ...
List of stars in Cancer. This is the list of notable stars in the constellation Cancer. The 121 stars are sorted by decreasing brightness, beginning with Beta Cancri, the brightest star in Cancer. Name. B.