![](http://www.alamy.com/thumbs/6/5DFE484C-9E45-4BAB-9298-4FE5146E6B25/A81D7B.jpg)
a doctor checks the pulse of an elderly man during a thallium stress test
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Photo credit: © Thomas Photography LLC / Alamy / Afripics
License: Licensed
Model Released: Yes
Keywords: aged, america, cardiac, care, chest, concern, diagnostic, elderly, grasping, health, holding, hospital, lawrence, listen, male, man, massachusetts, medical, medicine, north, observe, pulse, science, sensor, stethoscope, stress, technology, test, thallium, wait, watch, work