AW: Avoidance of reactions to radiocontrast media?

["Franz Schoenhofer" <franz.schoenhofer@CHELLO.AT>]

-----Ursprüngliche Nachricht-----

Von: owner-radsafe@list.vanderbilt.edu

[mailto:owner-radsafe@list.vanderbilt.edu]Im Auftrag von John Jacobus

Gesendet: Mittwoch, 03. Dezember 2003 05:44

An: Stewart Farber; Radsafe

Betreff: Re: Avoidance of reactions to radiocontrast media?





Since this is a Japanese article, can anyone say tell

me if the "radiocontrast agents" they discuss are the

same as the non-radioactive iodine based contrast

agents used in x-ray exams?  I believe they are as

they also consider the use on "nonionic dyes" which

are frequently used in such studies.



-------------------------------------------------------------



I have no access to the article, because I am not a member, but if it is the

question of iodine it can only be non-radioactive iodine. To my knowledge

I-131 would be used (almost) carrier-free, so that it would not provide any

contrast for x-rays because of insufficient mass.



I had an x-ray examination of my spinal cord almost 20 years ago, for which

an iodine-containing contrast agent was used. I was requested to stay for

two days lying in bed because of possible negative effects like head-ache or

nausea (I was told that). BTW: I did not suffer from any negative effects,

but the diagnosis of a discus prolaps enabled a successful surgery and one

year later I played basketball again..... What a wonderful example of a very

positive ratio of benefit vs. radiation dose!



Another example is the adminstering of KI in the case of a nuclear accident

with release of radioiodine - much emphasis is laid on persons being

allergic to iodine and "elders".



Therefore I think that the expression "radiocontrast agent" might point to

an agent which gives contrast using x-rays.



Best regards,



Franz







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