BACKGROUND Thallium-201 myocardial perfusion image (MPI) is commonly used to detect coronary artery disease in patients with chest pain. Although a normal thallium-201 MPI result is generally considered to be a good prognosis and further coronary angiogram is not recommended, there are still a few patients who suffer from unexpected acute coronary events. The aim of this study was to investigat...

I. The average reported sensitivity and specificity of thallium exercise testing in 2,877 cumulative cases published since 1983 (2-7), weighted for the number of cases in each study, is 83% and 53%, respectively, associated with approximately 17% false negative and 47% false positive results (Table I). 2. Referral bias cannot completely explain this poor diagnostic accuracy, which is therefore ...

Hydrothermally-synthesized titanate nanotubes (TNTs) are found to be excellent at adsorption of highly toxic thallium ions. Uptake of both thallium ions is very fast in the first 10 min. The adsorption isotherm of Tl(I) follows the Langmuir model with maximum adsorption capacity of 709.2 mg g(-1). Ion-exchange between Tl(+) and Na(+) in the interlayers of TNTs is the primary mechanism for Tl(I)...

PURPOSE To determine a reference background urinary thallium level; to compare urinary thallium data from workers to this background level; to investigate factors affecting these levels and whether creatinine correction is appropriate. METHODS Urine samples from non-occupationally exposed people (n = 273, from 113 individuals) and workers (n = 896, from 447 individuals) were analysed for thal...

OBJECTIVES We sought to assess the comparative diagnostic accuracy of adenosine versus exercise in conjunction with thallium-201 scintigraphy for the detection and localization of coronary artery disease in patients with left bundle branch block on the rest electrocardiogram (ECG). BACKGROUND Patients with left bundle branch block on the rest ECG frequently have artifactual reversible septal ...

Thallium(I) copper(I) thorium(IV) tris-elenide, TlCuThSe₃, crystallizes with four formula units in the space group Cmcm in the KCuZrS₃ structure type. There is one crystallographic-ally independent Th, Tl, and Cu atom at a site of symmetry 2/m.., m2m, and m2m, respectively. There are two crystallographically independent Se atoms at sites of symmetry m.. and m2m. The structure consists of sheets...

Thallium (I) was removed from aqueous solution by using gamma-alumina nanoparticles (?ANPs) materials as nano adsorbents. Varied experimental conditions such adsorbent dose, agitation time, initial concentration, pH, and temperature effects were carried out in batch view of the optimization thallium adsorption identification mechanisms system ?ANPs-Tl. The pH effect indicated a remarkable incre...