PET or MRI or X-ray CT for looking at the brain?

PET or MRI or X-ray CT for looking at the brain?

for examining the brain, what are relative merits of PET, MRI and X-ray
tomography?
I am curious about this. Doctors seem to refer patients mostly for
X-ray CT.
I live in a city of more than 1 million people, and there is only one
PET machine
as far as I know. There are quite a lot of MRI machines, which seem to
be idle.

Re: PET or MRI or X-ray CT for looking at the brain?

<efffemm@f-m.fm> wrote:

> for examining the brain, what are relative merits of PET, MRI and X-ray
> tomography? I am curious about this. Doctors seem to refer patients mostly
> for X-ray CT. I live in a city of more than 1 million people, and there is
> only one PET machine as far as I know. There are quite a lot of MRI
> machines, which seem to be idle.

Depends what you want to know about the brain in question.
If you're looking for an acute problem like a bleed or a non-acute
ischemic infarction CT is fine, and its quick.
Otherwise MRI is the best modality for the brain.
Brain PET is reserved for specific questions regarding Alzheimers or
epilepsy. May be others too but its not my field.

--
RL

Re: PET or MRI or X-ray CT for looking at the brain?

For a brain tumour, would MRI be better?

Ray Laughton wrote:
> <efffemm@f-m.fm> wrote:
>
> > for examining the brain, what are relative merits of PET, MRI and X-ray
> > tomography? I am curious about this. Doctors seem to refer patients mostly
> > for X-ray CT. I live in a city of more than 1 million people, and there is
> > only one PET machine as far as I know. There are quite a lot of MRI
> > machines, which seem to be idle.
>
> Depends what you want to know about the brain in question.
> If you're looking for an acute problem like a bleed or a non-acute
> ischemic infarction CT is fine, and its quick.
> Otherwise MRI is the best modality for the brain.
> Brain PET is reserved for specific questions regarding Alzheimers or
> epilepsy. May be others too but its not my field.
>
> --
> RL

Re: PET or MRI or X-ray CT for looking at the brain?

yes

<efffemm@f-m.fm> wrote:

> For a brain tumour, would MRI be better?
>
> Ray Laughton wrote:
> > <efffemm@f-m.fm> wrote:
> >
> > > for examining the brain, what are relative merits of PET, MRI and X-ray
> > > tomography? I am curious about this. Doctors seem to refer patients mostly
> > > for X-ray CT. I live in a city of more than 1 million people, and there is
> > > only one PET machine as far as I know. There are quite a lot of MRI
> > > machines, which seem to be idle.
> >
> > Depends what you want to know about the brain in question.
> > If you're looking for an acute problem like a bleed or a non-acute
> > ischemic infarction CT is fine, and its quick.
> > Otherwise MRI is the best modality for the brain.
> > Brain PET is reserved for specific questions regarding Alzheimers or
> > epilepsy. May be others too but its not my field.
> >
> > --
> > RL


--
RL

PET, MRI or X-ray CT for looking at the brain by Jeffrey Dach

On Dec 11 2006, 6:12 pm, efff...@f-m.fm wrote:
> for examining the brain, what are relative merits of PET, MRI and X-ray
> tomography?
> I am curious about this. Doctors seem to refer patients mostly for
> X-ray CT.
> I live in a city of more than 1 million people, and there is only one
> PET machine
> as far as I know. There are quite a lot of MRI machines, which seem to
> be idle.

PET is a radionuclide imaging technique used primarily to image
metabolic activity in cancer and is highly sensitive at cancer
detection.

MRI is an imaging technique that used magnetic spin of water molecules
to create an image and is therefore sensitive to substances which have
magnetic properties such as blood which has iron in it. MRI is
therefore extremely sensitive in detection of blood products of varying
ages.

CAT scan imaging uses Xray attenuation of atomic density and can
differentiate soft tissue, water, air and bone from each other on the
image. Useful for all-purpose imaging because it is fast and well
established. drdach drdash drdesk drdoch

microchip

Re: PET, MRI or X-ray CT for looking at the brain by Jeffrey Dach

microchip@anonymousspeech,com <microchip@anonymousspeech,com > wrote:

> On Dec 11 2006, 6:12 pm, efff...@f-m.fm wrote:
> > for examining the brain, what are relative merits of PET, MRI and X-ray
> > tomography?
> > I am curious about this. Doctors seem to refer patients mostly for
> > X-ray CT.
> > I live in a city of more than 1 million people, and there is only one
> > PET machine
> > as far as I know. There are quite a lot of MRI machines, which seem to
> > be idle.
>
> PET is a radionuclide imaging technique used primarily to image
> metabolic activity in cancer and is highly sensitive at cancer
> detection.
>
> MRI is an imaging technique that used magnetic spin of water molecules
> to create an image and is therefore sensitive to substances which have
> magnetic properties such as blood which has iron in it. MRI is
> therefore extremely sensitive in detection of blood products of varying
> ages.
>
> CAT scan imaging uses Xray attenuation of atomic density and can
> differentiate soft tissue, water, air and bone from each other on the
> image. Useful for all-purpose imaging because it is fast and well
> established. drdach drdash drdesk drdoch
>
> microchip
1.5 months for a canned response looks more like 'Dachschaden'...

--
RL