Myocardial perfusion imaging: Lessons learned and work to be done—update

lessons to be learned from the fate gotvand

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Usability: Lessons Learned ... and Yet to Be Learned

Childhood obesity prevention studies: lessons learned and to be learned.

OBJECTIVE To provide an overview of methodological issues in the design, delivery and evaluation of childhood obesity prevention programmes. DESIGN Review of existing literature. SETTING International. RESULTS Interventions have varied considerably with regard to their design, subject selection criteria, sample size, attrition rates, intervention components and duration of both the interv...

Present Bias: Lessons Learned and To Be Learned

Present bias is an old idea. The notion that people are susceptible to the over-pursuit of immediate gratification dates (at least) to the ancient Greeks. In academic research, psychologists working with animals in the 1960s and 1970s proposed “hyperbolic discounting”—a functional form of discounting that generates present bias—as a natural way to represent how animals respond to time delays, a...

Filter selection for 99mTc-Sestamibi myocardial perfusion SPECT imaging [Persian]

Myocardial perfusion SPECT imaging with Tc99m-sestamibi is the most accurate non-invasive means of detecting coronary artery disease and assessing the severity of perfusion abnormalities in the patients with coronary stenosis. Though simple and straight forward the results produced by the technique is very much affected by the details being used. One of the main problems with the test, wh...