Gold also produces a high output of secondary electrons when irradiated by an electron beam, and these low-energy electrons are the most commonly used signal source used in the scanning electron microscope.The isotope gold-198 (half-life 2.7 days) is used in nuclear medicine, in some cancer treatments and for treating other diseases. Cuisine
Gold can be used in food and has the E number 175. In 2016, the European Food Safety Authority published an opinion on the re-evaluation of gold as a food additive. Concerns included the possible presence of minute amounts of gold nanoparticles in the food additive, and that gold nanoparticles have been shown to be genotoxic in mammalian cells in vitro. Gold leaf, flake or dust is used on and in some gourmet foods, notably sweets and drinks as decorative ingredient. Gold flake was used by the nobility in medieval Europe as a decoration in food and drinks, in the form of leaf, flakes or dust, either to demonstrate the hosts wealth or in the belief that something that valuable and rare must be beneficial for ones health. Danziger Goldwasser (German: Gold water of Danzig) or Goldwasser (English: Goldwater) is a traditional German herbal liqueur produced in what is today Gdańsk, Poland, and Schwabach, Germany, and contains flakes of gold leaf. There are also some expensive (c. $1000) cocktails which contain flakes of gold leaf. However, since metallic gold is inert to all body chemistry, it has no taste, it provides no nutrition, and it leaves the body unaltered.
Ischemic fasciities (IF), also termed atypical decubital fibroplasia or decubital ischemic fasciitis, is a rare pseudosarcomatous (i.e. easily mistaken for a sarcoma) tumor. It was first described by E. A. Montgomery et al. in 1992. This tumor typically forms in the subcutaneous tissues (i.e. lower most tissue layer of the skin) that overlie bony protuberances such as a hip in individuals who are debilitated and bed-ridden.Microscopically, IF lesions consist of proliferating, atypical fibroblasts and/or myofibroblasts. The lesions were initially regarded as non-neoplastic proliferation responses of these cell types to long-term tissue pressure or trauma. More recently, however, the World Health Organization, 2020, defined IF lesions as neoplasms, i.e. tissue growths which are uncoordinated with that of the normal surrounding tissue and persist in growing even if the original trigger for their development is removed. The Organization formally classified IF lesions as belonging to the category of benign fibroblastic and myofibroblastic tumors.The treatment of choice for these often disfiguring, uncomfortable, and/or painful IF tumors is generally conservative, local surgical excision. It is critically important that these benign tumors be distinguished from other fasciitis tumors as well as certain sarcomas which can be highly invasive and/or malignant and therefor require far more aggressive treatment. Presentation
In the original study of IF, individuals diagnosed with the disorder were women (16 cases) or men (12 cases) age 15 to 95 years; In a more recent study, diagnosed individuals were women (15 cases) or men (29 cases) aged 23–96 years old.