REPOST: Dr. : Re: MBq/mCi --> Sofi

[Guest guest]

185 MBq equals 5mCi

370 MBq equals 10 mCi

3700 MBq dose is equivalent to 100 mCi

37 billion disintegrations (MBq's) per second is equal to 1000 mCi.

********************************************************************************\

*********************************

(Dr. )

Date: Sun, 15 Aug 1999 14:54:20 -0400

Subject: Re: RAI

References: <l03130303b3dbd5be362d@[194.112.61.166]>

Alan,

If I may share some history...

The units are actually MBq for millions of Becquerels, named after the French

scientist Henri Antoine Becquerel who discovered that uranium salts expose

photographic film. One Becquerel is one disintegration per second. A

distintegration is one atom changing into another with the release of radiation.

The units mCi are for one-thousandth of a Curie named after Pierre and Marie

Curie

who discovered the naturally occuring radioactive elements polonium and radium.

One Curie is the radioactive intensity of one gram of radium --37 billion

disintegrations per second or 1000 mCi. In 1921 Marie Curie journeyed to the

United States where President Warren Harding presented her with a gram of

radium!

(I think the NRC is still trying to track down President Harding so they can

levy

a big fine on him.) The Curie holds the distinction of being the only scientific

unit named at least in part after a woman, which is why I'll never switch to

using

Becquerels.

Jeff

Alan Goodman wrote:

> Muriel observed:

> <<Dear , It sounds like the practice surounding RAI in the

> Netherlands is similar to what I have experienced in Ireland.>>

>

> Hi Muriel,

>

> The 3700 Mbq dose that you had is equivalent to 100 mCi. They are just

> different ways of measuring the activity. In the UK they tend to use the

> Mbq or Gbq measurements and in the USA they use mCi. (My nuclear Doc was

> very specific that he gives " activity " . The " dose " that you receive is

> activity over time; i.e. it depends on how long it stays in you.).

>

--

A. , MD

Nuclear Medicine, A-72 (Fax)

Albany Medical Center (Beeper)

Albany, NY 12203 cooper@...

********************************************************************************\

*********************************

At 1/13/2003 10:54 AM, you wrote:

>Hello everyone

>I just received my papers and

>I'm very happy to tell you that my follow up scan was all in

>order! :-)

>

>question 1. I remeber seeing an explanaiotn of the difference

>between mci and mbq, but I can't find it. this scan I had 185

>mbq ,what does that make in mci?

>

>question 2. my doctor says to wait minimum 6 month to even start

>trying to get pregnant, but checking the old posts most posts say 3

>months. Is my doctor being overcautious? I know there are as many

>opinions as there are doctors, but aren't there any numbers on this?

>Thank you

>Sofi

>

>TT nov 01

>rai 85 mci feb 02

>rai 185 mbq dec 02

>next I'll be going to Paris for the weekend to celebrate :-)