title: A brain phantom for studying contrast recovery in emission computerized tomography.
abstract: A brain phantom is described that is characterized by a high anatomical definition and by the possibility of varying the internal contrast with the use of a single radioactive solution. The experimental work was done with a single-photon emission computerized tomographic (SPET) rotating camera. The phantom was used to study the contrast recovery of both the filtered back-projection and an iterative reconstruction algorithm. Moreover, it was also used to find a cross-calibration factor between activity concentrations in the SPET slices and an external reference.
authors.affiliation: Dipartimento di Fisiopatologia Clinica, Università di Firenze, Italy.
authors.forename: A
authors.initials: A
authors.lastname: Pupi
authors.forename: M T
authors.initials: MT
authors.lastname: De Cristofaro
authors.forename: A R
authors.initials: AR
authors.lastname: Formiconi
authors.forename: A
authors.initials: A
authors.lastname: Passeri
authors.forename: A
authors.initials: A
authors.lastname: Speranzi
authors.forename: E
authors.initials: E
authors.lastname: Giraudo
authors.forename: U
authors.initials: U
authors.lastname: Meldolesi
mesh_terms: D000465:Algorithms; D001921:Brain / Q000000981:diagnostic imaging*; D006801:Humans; D007091:Image Processing, Computer-Assisted; D008961:Models, Structural; D015899:Tomography, Emission-Computed, Single-Photon