[Gate-users] GateMaterials.db

Michaela Gaens m.gaens at fz-juelich.de
Fri Nov 29 10:03:28 CET 2013


you're right, I have also made the experience that the LYSO definition in the GATE database does not match the properties of the scanner's crystals. However, this does not affect the density alone, it is actually a matter of the ratio of Lutetium to Yttrium atoms. As far as I remember the mass fractions in the GATE definition correspond to a ratio of 30:70 in the number of Lutetium to Yttrium atoms, while actually a ratio of 90:10 seems to be more common for LYSO (taking these numbers from my head now, so don't rely on them ;))

If you want to adapt the values to your situation, you should make sure to change the ratio accordingly as well.

Hope this helps.


On 11/29/2013 09:41 AM, 신한백 wrote:
Dear gate users

I have a question about the gatematerial.db in the gate v6.2 directory.

I know that the density of LYSO is the 7.3. But the density in the gatematerial.db is the 5.37. The density of BGO and LSO is 7.13, 7.4 as you know.
Is the density of LYSO correct or the modify the this property.

I am highly appreciated if anyone can help me!


Han Baek Shin, M.S. Candidate

MiRe (Molecular Imaging Research & Education) Lab.
Department of Electronic Engineering,
Sogang University
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e-mail : somni0728 at gmail.com<mailto:somni0728 at gmail.com>


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