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Effective Dose Equivalent
>Date: Wed, 1 Jul 1998 10:09:37 -0600
>Reply-To: Medical Physics Mailing List <MEDPHYS@LISTS.WAYNE.EDU>
>Sender: Medical Physics Listserver <medphys@cwis-20.wayne.edu>
>From: "Joel E. Gray, Ph.D." <joelgray@M3.SPRYNET.COM>
>Subject: Effective Dose Equivalent
>To: MEDPHYS@LISTS.WAYNE.EDU
>
>Scott recently provided some values for effective dose. The following are
>ones that I determined based on ICRP 26 weighting factors (ICRP 60
>weighting factors can give significantly different results).
>
>PA Chest. For an entrance exposure of 15 mR, the EDE for both male and
>female is 4 mrad.
>
>Cardiac Cath. Assumes 5 minutes of fluoro at 1.9 R/min, biplace LV cath
>(5,000 mR), and monoplane coronary angio (12,200 mR). EDE is 687 mrad for
>males and 738 for females.
>
>CT of head including thyroid. Assumes 12,000 mR exposure measured at
>center of roatation in air (this is needed since the Drexler tables are
>based on exposure at center of rotation). EDE is 410 mrad for both males
>and females.
>
>Lung CT. Assumes 15 slices, and an "entrance exposure" (measured in the
>FDA CT phantom) of 5,700 mR. EDE for males is 546 mrad and 799 mrad for
>females.
>
>Liver CT. Assumes 20 slices, 15,400 mR at center of rotation. EDE for
>males is 2,427 mrad and for females is 2,642 mrad.
>
>AP and Lateral Lumbar Spine. Assumes 215 mR entrance exposure for AP and
>390 mR for lateral. EDE for males is 23 mrad, and 41 mrad for females.
>
>Hope you find this helpful!
>
> Joel
>
>Joel E. Gray, Ph.D., Consultant
>2804 Second Street SW, Suite 334
>Rochester, Minnesota 55902
>
>Ph 507-286-8910
>Cell Ph 507-269-4247
>Fax 507-286-8910
>e-mail joelgray@m3.sprynet.com
>
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Chris Alston
alstonc@odrge.odr.georgetown.edu
I am not here a representative of my employer.