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Regadenoson, sold under the brand name Lexiscan among others, is an A 2A adenosine receptor agonist that is a coronary vasodilator that is commonly used in pharmacologic stress testing. It produces hyperemia quickly and maintains it for a duration that is useful for radionuclide myocardial perfusion imaging . [ 1 ]
This was a form of radioactive decay which had never been observed before this time. Segrè and I were able to show that this radioactive isotope of the element with the atomic number 43 decayed with a half-life of 6.6 h [later updated to 6.0 h] and that it was the daughter of a 67-h [later updated to 66 h] molybdenum parent radioactivity.
Technetium (99m Tc) tetrofosmin is a drug used in nuclear medicine cardiac imaging.It is sold under the brand name Myoview (GE Healthcare).The radioisotope, technetium-99m, is chelated by two 1,2-bis[di-(2-ethoxyethyl)phosphino]ethane ligands which belong to the group of diphosphines and which are referred to as tetrofosmin.
Scanning is time-consuming, and it is essential that there is no patient movement during the scan time. Movement can cause significant degradation of the reconstructed images, although movement compensation reconstruction techniques can help with this. A highly uneven distribution of radiopharmaceutical also has the potential to cause artifacts.
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Pages in category "Physical examination" The following 70 pages are in this category, out of 70 total. This list may not reflect recent changes. ...
During the physical examination, the doctor will examine the genitals, including the penis and testicles. The doctor may ask the teenager to cough while examining the scrotum. Although this can be embarrassing for an adolescent male, it is necessary to help evaluate the presence of inguinal hernias or tumors.
Pharmacologic agents such as adenosine, regadenoson (Lexiscan), or dipyridamole is generally used when a patient cannot achieve adequate work level with treadmill exercise, or has poorly controlled hypertension or left bundle branch block. However, an exercise stress test may provide more information about exercise tolerance than a ...