A Prospective Surveillance Trial to Evaluate the Safety of Optison in Clinical Practice.

A Post-marketing Surveillance Study of the Occurrence of Serious Adverse Reactions Among Patients Who Receive Optison in Routine Medical Practice

This prospective surveillance trial will gather safety information for Optison when it is used in routine practice.

Inclusion Criteria:

• The subject is over 18 years old.
• The subject has been scheduled for an Optison-enhanced echocardiography exam.
• The subject has provided signed and dated informed consent.

Exclusion Criteria:

• Known hypersensitivity to perflutren, blood, blood products or albumin.