The present invention provides a combination of two or more imaging agent conjugates comprising an imaging agent conjugated to a targeting ligand, wherein the imaging agent comprises one or more of ZW800-1, ZW830-1, ZW700-1-Forte, ZW-DOTA, ZW-PyC3A, ZW-Macropa, ZW-porphyrin, ZW-NOTA, and ZW-Deferoxamine; and the targeting ligand comprises one or more of a cRGD, a dPSMA-617 or a KUE, a FAP, a bombesin receptor binding vector, or a octreotide binding vector, or one or more of peptides selected from SEQ ID No: 1-4.

The application is drawn to radiolabeled biomolecules and methods for radiolabeling biomolecules with radioactive halogen atoms that minimizes loss of the radioactive halogen due to dehalogenation in vivo, preserves the biological activity of the biomolecule, maximizes retention of radioactivity in cancer cells, and minimizes the retention of radioactivity in normal tissues after in vivo administration. Some such radiolabeled biomolecules comprise a radioactive metal atom in place of, or in addition to the radioactive halogen. The biomolecules have an affinity for particular types of cells and may specifically bind a certain cell, such as cancer cells. Relevant biomolecules include antibodies, monoclonal antibodies, antibody fragments, peptides, other proteins, nanoparticles and aptamers.

Tracers that can be used for PET or SPECT imaging of the distribution of Pgp are disclosed. The tracers are metalloprobes that can comprise a radioactive metal ion such as .sup.67Ga or .sup.68Ga. Methods of synthesizing the tracers, and methods of imaging heart and other tissues are also disclosed. The tracers can be used to obtain high signal-to-background ratios for imaging tissues in vivo such as heart or tumor tissue. In various embodiments, disclosed tracers can exhibit, a) enhanced first pass extraction into heart tissue compared to presently available probes, b) linearity with true blood flow, c) enhanced detection of myocardial viability compared to presently available probes, d) reduced liver retention compared to presently available probes, and e) more efficient clearance from non-cardiac and adjoining tissues compared to presently available probes.

The invention relates to a therapeutic composition including a complex having the following formula (1), including a rare-earth radioisotope in ionic form, said complex being solubilized in an organic lipophilic phase: [M(L).sub.3] in which: M denotes the rare-earth radioisotope in ionic form, and L denotes a tropolone ligand or a ligand derived from tropolone.

The invention provides a method of preparing a .sup.89Zr-oxine complex of the formula. The invention also provides a method of labeling a cell with the .sup.89Zr-oxine complex and a method for detecting a biological cell in a subject comprising administering the .sup.89Zr-oxine complex to the subject.

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Imaging and radiotherapeutics agents targeting fibroblast-activation protein- (FAP-) and their use in imaging and treating FAP- related diseases and disorders are disclosed.

The present invention involves a method of targeted imaging of a bacterial infection in a subject. In one embodiment, the method includes administering pyochelin (PcH) bound to a radiometal to the subject and imaging the infected area of the subject using a positron emission tomography-computed tomography (PET/CT) scan. In one embodiment, the pyochelin bound to a radiometal is selected from the group consisting of copper-64 bound pyochelin and gallium-68 bound pyochelin.

The invention relates to a marking precursor incorporating a chelator or fluorination group for radiolabelling with 44Sc, 47Sc, 55Co, 62Cu, 64Cu, 67Cu, 66Ga, 67Ga, 68Ga, 89Zr, 86Y, 90Y, 90Nb, 99mTc, 111ln, 135Sm, 140Pr, 159Gd, 149Tb, 160Tb, 161Tb, 165Er, 166Dy, 166Ho, 175Yb, 177Lu, 186Re, 188Re, 213Bi and 225Ac or with 18F, 131I or 211At, and one or two biological targeting vectors which are coupled to the chelator or fluorinating group via one or more squaric acid groups.

Imaging and radiotherapeutics agents targeting fibroblast-activation protein- (FAP-) and their use in imaging and treating FAP- related diseases and disorders are disclosed.

The invention relates to a marking precursor comprising a chelator or fluorination group for radiolabelling with .sup.44SC, .sup.47SC, .sup.55Co, .sup.62Cu, .sup.64Cu, .sup.67Cu, .sup.66Ga, .sup.67Ga, .sup.68Ga, .sup.89Zr, .sup.86Y, .sup.90Y, .sup.90Nb, .sup.99mTc, .sup.111In, .sup.135Sm, .sup.140Pr, .sup.159Gd, .sup.149Tb, .sup.160Tb, .sup.161Tb, .sup.165Er, .sup.166Dy, .sup.166Ho, .sup.175Yb, .sup.177Lu, .sup.186Re, .sup.188Re, .sup.213Bi and .sup.225Ac or with .sup.18F, .sup.131I or .sup.211At, and one or two biological targeting vectors which are coupled to the chelator or fluorinating group via one or more squaric acid groups.