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Claims for Patent: 7,229,606

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Claims for Patent: 7,229,606

Title:Diagnostic imaging contrast agents with extended blood retention
Abstract:The present invention relates to contrast agents for diagnostic imaging with prolonged blood retention. In particular, this invention relates to novel compounds that are characterized by an image enhancing moiety (IEM); a protein plasma binding moiety (PPBM); and a blood half-life extending moiety (BHEM). This invention also relates to pharmaceutical compositions comprising these compounds and to methods of using the compounds and compositions for blood half-life extension and contrast enhancement of diagnostic imaging.
Inventor(s): McMurry; Thomas J. (Winchester, MA), Sijiki; Hironao (Gifu, JP), Scott; Daniel M. (Acton, MA), Lauffer; Randall B. (Brookline, MA)
Assignee: Epix Pharmaceuticals, Inc. (Lexington, MA)
Application Number:10/755,507
Patent Claims: 1. A method for examining vasculature of a tissue comprising HSA in a human, said method comprising: a) administering a diagnostic imaging contrast agent, or a pharmaceutically acceptable salt thereof, to said human, said diagnostic imaging contrast agent selected from the group consisting of: ##STR00027## ##STR00028## b) obtaining an MR image of said tissue.

2. The method of claim 1, wherein said tissue is selected from the group consisting of a tumor, a heart, a brain, a leg, a lung, and a kidney.

3. A method for examining perfusion in a tissue comprising HSA in a human, said method comprising: a) administering a diagnostic imaging contrast agent, or a pharmaceutically acceptable salt thereof, to said human, said diagnostic imaging contrast agent selected from the group consisting of: ##STR00029## ##STR00030## b) obtaining an MR image of said tissue of said human.

4. The method of claim 3, wherein said tissue is selected from the group consisting of a tumor, a heart, a brain, a leg, a lung, and a kidney.

5. A method of monitoring a human's brain during cognitive events, said method comprising: a) administering a diagnostic imaging contrast agent, or a pharmaceutically acceptable salt thereof, to said human, said diagnostic imaging contrast agent selected from the group consisting of: ##STR00031## ##STR00032## b) obtaining an MR image of said brain of said human.

6. The method of claim 5, wherein said obtaining occurs during a cognitive event.

7. A method for determining blood volume in a tissue comprising HSA in a human, said method comprising: a) administering a diagnostic imaging contrast agent, or a pharmaceutically acceptable salt thereof, to said human, said diagnostic imaging contrast agent selected from the group consisting of: ##STR00033## ##STR00034## b) obtaining an MR image of said tissue.

8. The method of claim 7, wherein said tissue is selected from the group consisting of a tumor, a heart, a brain, a leg, a lung, and a kidney.
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