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Insidermedicine In Depth – November 16, 2010 – Magnetic Perfusion Imaging

ndividuals who bear a diagnostic cardiac imaging take a look at often called myocardial perfusion imaging, or MPI, often have this take a look at a number of occasions and in addition bear different exams that expose them to radiation, in line with analysis revealed within the Journal of the American Medical Affiliation.

Right here is a few details about MPI:

• It’s a non-invasive nuclear drugs imaging take a look at used to measure blood circulate to the guts

• It includes injecting sufferers with a radioactive substance, referred to as a tracer, that’s taken up by the portion of the guts muscle receiving good blood circulate

• It may be carried out at relaxation or whereas exercising

Researchers from Columbia College Medical Heart examined the medical data of over 1,000 sufferers who underwent MPI at their heart in early 2006. The investigators counted what number of procedures these sufferers underwent between 1988 and 2008 that concerned publicity to radiation, estimating how a lot radiation they have been uncovered to general.

On common, the sufferers underwent about 15 procedures that uncovered them to radiation, together with 4 procedures during which the dose of radiation was fairly excessive. Almost one-third of the sufferers have been uncovered to an general radiation dose over 100 mSv. Greater than a 3rd of the sufferers underwent a number of MPIs, and in these sufferers the cumulative dose of radiation they have been uncovered to was 121 mSv. Radiation doses have been larger for males and white sufferers, and people with recognized cardiac illness or signs of the situation have been extra more likely to bear repeat MPIs.

At the moment’s analysis highlights the necessity to take into account each professionals and cons, together with radiation dose, when selecting sure medical procedures, particularly when they’re more likely to be repeated

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