Prospective Evaluation of Strontium in Patients After CardioGen-82 PET MPI Scanning

Radiation Exposure Clinical Trial

Official title: A Prospective Study to Estimate Inadvertent Radiation Exposure From Strontium Isotopes in Patients Who Have Undergone CardioGen-82® PET MPI Scanning

Status Completed

Clinical Trial Summary

This study will be performed at clinical sites that have administered CardioGen-82® to patients from January to July 2011. The patients enrolled(i.e., "target date patients") will be all those who were dosed at the end of use of the CardioGen-82® generators on the last day of generator use from the generator that was used immediately prior to the recalled generator (i.e., "target date generators"). These are not patients who received drug eluted from the recalled generator. Of these patients, it is planned that 100 patients will be entered in this trial.

Clinical Trial Description

This clinical study protocol will use a three tier approach consisting of the following examinations:

1. Patient examination with Survey Meter: Patients who agree to be tested at the clinical sites will be first evaluated using a survey meter. In those patients in whom radiation count is ≥ 2 times above background count using a standard survey meter, the presence of Sr-82 and/or Sr-85 will be assessed through a quantitative reading from a calibrated portable isotope identifier.

2. Patient examination with Portable Isotope Identifier: This examination will be done by use of a portable isotope identifier, which will be supplied by the Sponsor to the study sites. An assessor, independent to the study site, will perform the examination. In those patients whose radiation count is ≥ 2 times above background count using a standard survey meter, the presence of Sr-82 and/or Sr-85 will be assessed through a quantitative reading from a calibrated portable isotope identifier. The reading will be forwarded along with the date of the reading, the date of the patient's CardioGen-82® scan, and the total dose of CardioGen-82® administered to the patient, to an independent medical expert, independent to the study site, who will back-calculate an estimated dose of Sr-82 and/or Sr-85 from these data.

3. Patient examination at Oak Ridge National Laboratory: Any patient whose estimated dose of Sr-82 exceeds the specified limit of 0.02 microcuries per mCi Rb-82 administered, and/or whose estimated dose of Sr-85 exceeds the specified limit of 0.2 microcuries per mCi Rb-82 administered, will be asked to travel to Oak Ridge National Laboratory in Tennessee, for accurate whole body scanning. Scan data from Oak Ridge National Laboratories will be analyzed by one or more independent medical experts to accurately back-calculate exposure to Sr-82 and/or Sr-85, and to estimate health hazard for the patient. ;

Study Design

Observational Model: Cohort, Time Perspective: Prospective

Related Conditions & MeSH terms

• Radiation Exposure

• NCT number: NCT01424774
• Study type: Observational
• Source: Bracco Diagnostics, Inc
• Status: Completed
• Phase: N/A
• Start date: September 2011
• Completion date: April 2012