title: Contrast agent CT imaging in variable sized organs using single energy synchrotron radiation.
abstract: A theoretical and experimental study has been performed to determine which element, when used as a contrast agent in CT, requires the lowest concentration when delivered to various sized organs. Iodine is at present the primary contrast agent used in contrast enhanced CT imaging. The results presented here show that iodine is not the optimum element to use in terms of concentration needed for visibility. When administered to very small organs, the use of gadolinium reduces the concentration required for visibility by at least a factor of 3 over that required when using iodine.
authors.affiliation: School of Physical Sciences, Dublin City University, Ireland.
authors.forename: N J
authors.initials: NJ
authors.lastname: O'Hare
mesh_terms: D003198:Computer Simulation; D003287:Contrast Media; D005682:Gadolinium; D006801:Humans; D007455:Iodine; D008961:Models, Structural; D010315:Particle Accelerators; D014057:Tomography, X-Ray Computed; D014781:Viscera / Q000033:anatomy & histology / Q000000981:diagnostic imaging*
chemical_list: D003287:Contrast Media; D007455:Iodine; D005682:Gadolinium