Last reviewed · How we verify

Thallous Chloride T1-201

GE Healthcare · FDA-approved active Small molecule

Thallous chloride T1-201 is a potassium analog that accumulates in viable myocardial tissue and is used as a radiotracer for cardiac imaging.

Thallous chloride T1-201 is a potassium analog that accumulates in viable myocardial tissue and is used as a radiotracer for cardiac imaging. Used for Myocardial perfusion imaging for detection of coronary artery disease, Assessment of myocardial viability in patients with coronary artery disease.

At a glance

Generic nameThallous Chloride T1-201
SponsorGE Healthcare
Drug classCardiac imaging agent
TargetNa+/K+-ATPase pump
ModalitySmall molecule
Therapeutic areaCardiovascular
PhaseFDA-approved

Mechanism of action

Thallium-201 mimics potassium and is taken up by the Na+/K+-ATPase pump in viable cardiac myocytes. The distribution of the radiotracer reflects regional myocardial blood flow and cellular viability, allowing visualization of perfusion defects and ischemic or infarcted tissue. It is used in nuclear medicine imaging to assess coronary artery disease and myocardial viability.

Approved indications

Common side effects

Key clinical trials

Primary sources

Every claim on this page is sourced from regulatory or scientific primary sources. See our editorial policy for full methodology.

SourceUsed for
ClinicalTrials.govTrial enrolment, design, endpoints, results

Competitive intelligence

For the full competitive landscape — auto-detected comparators, recent regulatory actions across the set, upcoming PDUFA, patent timeline, sponsor landscape: