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MEDICAL PROCEDURE DOSE CALCULATOR AND RISK LANGUAGE GENERATOR




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RADAR - External Doses - Medical Sources




The Organ Dose Handbooks for X-ray studies, as developed by the FDA's Center for Devices and Radiological Health (CDRH), and the CDI3 software for the same purpose, are available at this FDA site. These organ dose handbooks contain reference values of radiation doses absorbed in tissues of patients undergoing representative diagnostic radiological examinations and interventional procedures.

Another goody cooked up by the folks on the Vanderbilt University Safety Committee is a table of values for doses from x-ray and CT sources, as found in the literature, linked to the patient consent form language discussed on the Nuclear Medicine Internal Dose page. See if you-like-a: External Medical Dose Table

These same data are also retrievable at the
RADAR Medical Procedure Dose Calculator and Risk Language Generator



Fetal Doses from Diagnostic X-ray Examinations

The following table shows estimated fetal radiation dose for 0, 3, 6, and 9 months gestational age based upon typical exposure values. These data were estimated and tabulated by Dr. Ed Donnelly of Vanderbilt University as part of an ANSI/HPS Standard on Fetal Dose Calculations. This document is at present in press.

Estimated Fetal Radiation Dose Based on Typical X-ray Exam Parameters
Study Fetal Dose mrem, (mSv)
Early Pregnancy 3-Month 6-Month 9-Month
AP Pelvis144 (1.44)131 (1.31)127 (1.27)157 (1.57)
PA Pelvis40 (0.40)16 (0.16)232 (2.32)100 (1.00)
Lateral Pelvis53 (0.53)32 (0.32)48 (0.48)52 (0.52)
AP T-Spine (wide FOV)1.8 (0.018)1.1 (0.011)6.9 (0.069)13 (0.13)
AP T-Spine (narrow)1.2 (0.012)0.8 (0.008)4.6 (0.046)8.9 (0.089)
Lateral T-Spine0.6 (0.006)0.6 (0.006)1.7 (0.017)3.2 (0.032)
AP Lumbar Spine225 (2.25)197 (1.97)394 (3.94)926 (9.26)
Lat Lumbar Spine113 (1.13)62 (0.62)84 (0.84)85 (0.85)


Here is a link to a helpful information about x-ray technician training.