%0 Journal Article %A J. Fred Verzijlbergen %A Paul HMJ Vermeersch %A Gert-Jan Laarman %A Carl APL Ascoop %T Inadequate Exercise Leads to Suboptimal Imaging. Thallium-201 Myocardial Perfusion Imaging after Dipyridamole Combined with Low-Level Exercise Unmasks Ischemia in Symptomatic Patients with Non-Diagnostic Thallium-201 Scans Who Exercise Submaximally %D 1991 %J Journal of Nuclear Medicine %P 2071-2078 %V 32 %N 11 %U https://jnm.snmjournals.org/content/jnumed/32/11/2071.full.pdf