title: 18F-positron-emitting/fluorescent labeled erythrocytes allow imaging of internal hemorrhage in a murine intracranial hemorrhage model.
abstract: An agent for visualizing cells by positron emission tomography is described and used to label red blood cells. The labeled red blood cells are injected systemically so that intracranial hemorrhage can be visualized by positron emission tomography (PET). Red blood cells are labeled with 0.3 µg of a positron-emitting, fluorescent multimodal imaging probe, and used to non-invasively image cryolesion induced intracranial hemorrhage in a murine model (BALB/c, 2.36 × 108cells, 100 µCi, <4 mm hemorrhage). Intracranial hemorrhage is confirmed by histology, fluorescence, bright-field, and PET ex vivo imaging. The low required activity, minimal mass, and high resolution of this technique make this strategy an attractive alternative for imaging intracranial hemorrhage. PET is one solution to a spectrum of issues that complicate single photon emission computed tomography (SPECT). For this reason, this application serves as a PET alternative to [99mTc]-agents, and SPECT technology that is used in 2 million annual medical procedures. PET contrast is also superior to gadolinium and iodide contrast angiography for its lack of clinical contraindications.
authors.affiliation: 1 Department of Radiology, Molecular Imaging Innovations Institute (MI3), New York, USA.
authors.forename: Ye
authors.initials: Y
authors.lastname: Wang
authors.affiliation: 1 Department of Radiology, Molecular Imaging Innovations Institute (MI3), New York, USA.
authors.forename: Fei-Fei
authors.initials: FF
authors.lastname: An
authors.affiliation: 1 Department of Radiology, Molecular Imaging Innovations Institute (MI3), New York, USA.
authors.forename: Mark
authors.initials: M
authors.lastname: Chan
authors.affiliation: 2 Department of Pharmacology, University of California, La Jolla, USA.
authors.forename: Beth
authors.initials: B
authors.lastname: Friedman
authors.affiliation: 2 Department of Pharmacology, University of California, La Jolla, USA.
authors.forename: Erik A
authors.initials: EA
authors.lastname: Rodriguez
authors.affiliation: 2 Department of Pharmacology, University of California, La Jolla, USA.|3 Howard Hughes Medical Institute, La Jolla, USA.
authors.forename: Roger Y
authors.initials: RY
authors.lastname: Tsien
authors.affiliation: 4 Department of Radiology, Memorial Sloan Kettering Cancer Center, New York, USA.
authors.forename: Omer
authors.initials: O
authors.lastname: Aras
authors.affiliation: 1 Department of Radiology, Molecular Imaging Innovations Institute (MI3), New York, USA.
authors.forename: Richard
authors.initials: R
authors.lastname: Ting
mesh_terms: D000818:Animals; D004912:Erythrocytes / Q000737:chemistry; D005462:Fluorine Radioisotopes; D020300:Intracranial Hemorrhages / Q000000981:diagnostic imaging*; D007553:Isotope Labeling; D008722:Methods; D051379:Mice; D008807:Mice, Inbred BALB C; D049268:Positron-Emission Tomography / Q000379:methods* / Q000592:standards
chemical_list: D005462:Fluorine Radioisotopes
keywords: Positron emission tomography; cell tracking; cerebral blood flow; imaging; intracranial hemorrhage; optical imaging