question for Steph

Not cancer but radiation query:

Upper GI with SBFT--

Intestinal transit test

I may be having those tests (to reasses some aspects of my Crohn's Disease).
Am I dealing with a lot of radiation here??

Also, recently had a chest x-ray and sinus x-rays. Same question

Mel

"MZB" <moo@noway.prudigy.net> wrote in message
news:47g0h.77$Rj3.1@newsfe06.lga...
> Not cancer but radiation query:
>
> Upper GI with SBFT--
>
> Intestinal transit test
>
> I may be having those tests (to reasses some aspects of my Crohn's
> Disease). Am I dealing with a lot of radiation here??
>
> Also, recently had a chest x-ray and sinus x-rays. Same question
>
> Mel
>

There is some radiation dosage associated with a sbft.............but a
small amount compared with therapeutic radiation. Like all things, the (very
small) risk needs to be measured against the potential benefit.

Chest and sinus x-rays give a negligible amount of radiation dose.

On Fri, 27 Oct 2006 00:42:41 -0400, "MZB" <moo@noway.prudigy.net>
wrote:

>Not cancer but radiation query:
>
>Upper GI with SBFT--
>
>Intestinal transit test
>
>I may be having those tests (to reasses some aspects of my Crohn's Disease).
>Am I dealing with a lot of radiation here??
>
>Also, recently had a chest x-ray and sinus x-rays. Same question
>
>Mel
>
Unless fluoroscopy is involved, the general answer is no.
Today's films are very sensitive, and the film is up against a
phosphor coated plate, so the film gets exposed by both the X-rays
passing through it, and from the phosphors which emit light when they
are struck by the X-rays. The idea is to maximize the exposure of the
film with minimal X-ray exposure.

In addition, most diagnostic X-ray machines are fitted with a very
thin aluminium plate over the X-ray source, so that the lower energy
X-ray components which can contribute substantially to total radiation
dose, but nothing to the actual image produces, are stopped. This is
called beam hardening.

"matt weber" <mattheww50@verizon.net> wrote in message
news:tdb5k2l5dn2bu0e0i6u50buvsu9s5ivfcv@4ax.com...
> On Fri, 27 Oct 2006 00:42:41 -0400, "MZB" <moo@noway.prudigy.net>
> wrote:
>
>>Not cancer but radiation query:
>>
>>Upper GI with SBFT--
>>
>>Intestinal transit test
>>
>>I may be having those tests (to reasses some aspects of my Crohn's
>>Disease).
>>Am I dealing with a lot of radiation here??
>>
>>Also, recently had a chest x-ray and sinus x-rays. Same question
>>
>>Mel
>>
> Unless fluoroscopy is involved, the general answer is no.
> Today's films are very sensitive, and the film is up against a
> phosphor coated plate, so the film gets exposed by both the X-rays
> passing through it, and from the phosphors which emit light when they
> are struck by the X-rays. The idea is to maximize the exposure of the
> film with minimal X-ray exposure.
>
> In addition, most diagnostic X-ray machines are fitted with a very
> thin aluminium plate over the X-ray source, so that the lower energy
> X-ray components which can contribute substantially to total radiation
> dose, but nothing to the actual image produces, are stopped. This is
> called beam hardening.
>
>

Unless your imaging dept is totally digital...........