Re: Radiation From Nuclear Stress Test Compared With Chest X-Rays And Annual Background Radiation At

Re: Radiation From Nuclear Stress Test Compared With Chest X-Rays And Annual Background Radiation At

So it seems there are no obvious gaffes in what follows.

Right?

Cheers,

DSH
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Radiation From Nuclear Stress Test Compared With Chest X-Rays And Annual
Background Radiation at Sea Level

Thallium Scan = 3 mCi -- 17.76 mSv or 1776 mrem Tl-201 Thallous
Chloride (with contaminants)

Sestamibi Scan = Cardiolite, Stress -- 30 mCi -- 8.769 mSv or 876.9 mrem
Tc-99m Sestamibi

Chest X-Ray PA -- .04 mSv or 4 mrem

Chest X-Ray PA + Lat -- .24 mSv or 24 mrem

Annual Background Radiation at Sea Level = 3 mSv or 300 mrem

< * w w w .ieo . it /Radar/RADARDoseRiskCalc.html>
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< * en.wikipedia.org/wiki/Cardiac_stress_test>

Another set of figures:

Stress tests using radiological agents confer low long-term risk of cancer,
but patients undergoing such examinations often receive little or inaccurate
information about these risks. A sestamibi scan is approximately 12 mSv. A
thallium scan is approximately 25 mSv.

(For comparison, the annual background radiation per annum a person receives
is approximately 3 mSv.) A thallium scan corresponds the dose of 250 chest
x rays, or an extra cancer risk of about 1 in 16000 exposed patients (A. de
González). The lifetime risk of fatal cancer development is 4%/Sv or
0.004%/mSv or about 0.1% for a thallium scan. Therefore, frequent usage of
these tests has to balance the benefits against the risks of radiation.

1 mSv [millisievert] = 100 mrem [millirems]

< * w w w .ieo . it /Radar/RADARDoseRiskCalc.html>

< * w w w .hc-sc.gc.ca/ewh-semt/occup-travail/radiation/dosim/res-centre/conversion/index_e.html>

< * w w w .radiation-scott.org/radsource/2-0.htm>