Bracco Diagnostics is actively promoting the use of positron-based rubidium for heart scans as an alternative to the use of gamma-based technetium, which is currently in short supply. Bracco's CardioGen-82 generator of rubidium isotopes is the only available product for generator-based PET myocardial perfusion imaging approved by the FDA. The company said it can supply enough CardioGen-82 to address the demand for clinical cardiac scans during the ongoing shortage.

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