title: Pectoralis muscle uptake of thallium-201 after arm exercise ergometry. Possible confusion with lung thallium-201 activity.
abstract: Pectoralis muscle uptake of thallium-201 was noted in 8 (73%) out of 11 patients after exercise arm ergometry. Uptake varied from mild to marked and potentially could be confused with pulmonary Tl-201 activity with a resulting false-positive diagnosis of exercise-induced left ventricular dysfunction. The three patients exhibiting negative or trace Tl-201 uptake had suboptimal exercise efforts. The characteristics of pectoralis muscle Tl-201 uptake are illustrated, and differentiation from true lung Tl-201 activity is discussed.
authors.affiliation: Department of Radiology, Tulane University Medical Center, New Orleans, Louisiana 70112.
authors.forename: R J
authors.initials: RJ
authors.lastname: Campeau
authors.forename: O M
authors.initials: OM
authors.lastname: Garcia
authors.forename: O A
authors.initials: OA
authors.lastname: Correa
authors.forename: J E
authors.initials: JE
authors.lastname: Mace
mesh_terms: D001132:Arm; D005080:Exercise Test; D005189:False Positive Reactions; D006331:Heart Diseases / Q000000981:diagnostic imaging; D006801:Humans; D008168:Lung / Q000000981:diagnostic imaging*; D010369:Pectoralis Muscles / Q000000981:diagnostic imaging* / Q000378:metabolism; D011877:Radionuclide Imaging; D013794:Thallium Radioisotopes
chemical_list: D013794:Thallium Radioisotopes