title: Development and evaluation of phantom for verification of section thickness at thin-section MR imaging.
abstract: The purpose of this study was to construct and evaluate a phantom for measurement of magnetic resonance (MR) imaging sections with thicknesses of 0.3-0.6 mm. The phantom consisted of 304 0.1-mm-thick disks, each of which had a single notch filled with a diluted solution of gadopentetate dimeglumine. Qualitative and quantitative evaluations of T1-weighted images with section thicknesses of 0.3-0.6 mm were performed. A computer simulation was performed to evaluate the influence of different examination angles. At quantitative evaluation, the difference between nominal and measured section thicknesses ranged from 11% (nominal section thickness, 0.6 mm) to 18% (nominal section thickness, 0.4 mm). Computer simulations revealed that the phantom's positioning along the z-axis had a negligible influence at quantitative evaluation.
authors.affiliation: Charité, Universitätsmedizin Berlin, Medizinische Fakultät der Humboldt-Universität zu Berlin, Campus Virchow-Klinikum, Klinik für Strahlenheilkunde, Augustenburger Platz 1, D-13353 Berlin, Germany. lemke@charite.de
authors.forename: Arne-Jörn
authors.initials: AJ
authors.lastname: Lemke
authors.forename: Iris
authors.initials: I
authors.lastname: Kazi
authors.forename: Philipp
authors.initials: P
authors.lastname: de Bary
authors.forename: Ullrich
authors.initials: U
authors.lastname: Bernhardt
authors.forename: Paul Ivan
authors.initials: PI
authors.lastname: Foerster
authors.forename: Michael
authors.initials: M
authors.lastname: Foerster
authors.forename: Roland
authors.initials: R
authors.lastname: Felix
mesh_terms: D003198:Computer Simulation; D003287:Contrast Media; D004867:Equipment Design; D019786:Gadolinium DTPA; D008279:Magnetic Resonance Imaging; D019047:Phantoms, Imaging; D013223:Statistics as Topic
chemical_list: D003287:Contrast Media; D019786:Gadolinium DTPA