# Nuclide record tl-201 (isotope). Data CC BY-NC 4.0, attribute "Data from Nuclide (nuclide.cc)". Whole corpus: https://nuclide.cc/api/v1/nuclide.nt
@prefix schema: <https://schema.org/> .
@prefix nuclide: <https://nuclide.cc/ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .

<https://nuclide.cc/isotopes/tl-201/>
  a schema:ChemicalSubstance ;
  nuclide:kind "isotope" ;
  schema:identifier "tl-201" ;
  schema:name "Thallium-201"@en ;
  schema:alternateName "201Tl"@en ;
  schema:description "A radioactive potassium look-alike with a three-day lifetime, injected to see how well blood reaches, and heart muscle survives in, different parts of the heart on a SPECT scan."@en ;
  schema:url <https://nuclide.cc/isotopes/tl-201/> ;
  schema:dateModified "2026-09-22"^^xsd:date ;
  schema:citation <https://radiopaedia.org/articles/thallium-201-scintigraphy>, <https://pdf.hres.ca/dpd_pm/00050840.PDF> ;
  nuclide:status "established" ;
  nuclide:tag "gamma emitter", "cardiac perfusion", "myocardial viability" ;
  nuclide:technologies <https://nuclide.cc/technologies/spect/>, <https://nuclide.cc/technologies/cyclotron-isotope-production/> .