title: Is spin lattice relaxation time independent of species?
abstract: It has been suggested that the spin lattice relaxation time is independent of species. It was further stated that, from a nuclear magnetic resonance standpoint, the human muscle is similar to rat muscle and to pig muscle, etc. However, it is observed that, in normal liver and kidney of human, rat, dog, rabbit and hamster, spin lattice relaxation time varies in different species as a function of percentage of body-weight of the organ. The result shows that spin lattice relaxation time is different in different species because of the organ weight which in turn dictates the metabolism in an individual species.
authors.affiliation: Department of Radiology, Marshfield Clinic, Wisconsin 54449, USA.
authors.forename: S F
authors.initials: SF
authors.lastname: Akber
mesh_terms: D000818:Animals; D001835:Body Weight; D002415:Cats; D006224:Cricetinae; D004285:Dogs; D004606:Elephants; D005589:Foxes; D006736:Horses; D006801:Humans; D007668:Kidney / Q000033:anatomy & histology*; D008099:Liver / Q000033:anatomy & histology*; D009682:Magnetic Resonance Spectroscopy; D051379:Mice; D009929:Organ Size; D010100:Oxygen / Q000097:blood; D011817:Rabbits; D051381:Rats; D012756:Sheep; D013045:Species Specificity
chemical_list: D010100:Oxygen