Frontispiece to Thomas Willis' 1663 book "Diatribae duae medico-philosophicae - quarum prior agit de fermentatione", a treatise on fermentation as a mysterious key to transformations (from mash to beer or from health to fevers), engraved and published by Gerbrandus Schagen in Amsterdam<unk>  (or chemical medicine) is a branch of both chemistry and medicine (ἰατρός (iatrós) was the Greek word for "physician" or "medicine"). Having its roots in alchemy,<unk>  seeks to provide chemical solutions to diseases and medical ailments. This area of science has fallen out of use in Europe since the rise of modern establishment medicine. However,<unk>  was popular between 1525 and 1660, especially in the Low Countries. Its most notable leader was Paracelsus, an important Swiss alchemist of the 16th century. Iatrochemists believed that physical health was dependent on a specific balance of bodily fluids. Iatrochemical therapies and concepts are still in wide use in South Asia, East Asia and amongst their diasporic communities worldwide.
Iatrochemistry
Diffuse optical imaging
Spectral imaging 
Dosimetry
Biodosimetry
Evaporimetry
Micrographia 
Optical tomography