2.10. Pet

The PET scanner generator page allows the user to create a PET scanner geometry, using his own configuration or from a set of predefined commercial scanners.

The geometry is composed by three components:
  1. Crystals block, a unit that contains many rectangular crystals

  2. Module, repetition of crystal blocks

  3. A repetition of the crystal modules using LATTICE.gifLATTICE around the patient

grab-pet-page.gif

2.10.1. Ribbon

Templates group

Label

Shortcut

Description

Template

Select a commercial PET scanner from flair templates

Action group

Label

Shortcut

Description

gear32.gif Create

Create the geometry input cards

2.10.2. Options

Axes Naming: The geometry will be generated along the Z axis on the X-Y plane. The naming of the axes used are the following:

Radial:

Along the radius of the scanner. Origin is at X=Y=0

Azimuthal:

Azimuthal angle of the scanner starting from X=0

Axial:

Equal to the Z-direction

Label Frames:

NR:

Number of crystals along the radial direction

DR:

Thickness of crystals along the radial direction

dR:

Gap between crystals along the radial direction

Nz:

Number of crystals along the axial/Z direction

Dz:

Thickness of crystals along the axial/Z direction

dz:

Gap between crystals along the axial/Z direction

NTheta:

Number of crystals along the azimuthal (theta) direction

DTheta:

Thickness of crystals along the azimuthal (theta) direction

dTheta:

Gap between crystals along the azimuthal (theta) direction

Module:
MR:

Number of blocks along the radial direction

SR:

Gap between blocks along the radial direction

Mz:

Number of blocks along the axial/Z direction

Sz:

Gap between blocks along the axial/Z direction

MTheta:

Number of blocks along the azimuthal (theta) direction

STheta:

Gap between blocks along the azimuthal (theta) direction

Pet:
Modules:

Number of crystal modules composing the scanner

Radius:

Inner(minimum) radius location of the crystal modules

Angle:

Opening angle for half of the PET. 180deg is for a full PET system

Material:

Material to be assigned to the crystals.

Warning

the material definition is not automatically inserted to the input. The user has to inserted it from the database

Region:

FLUKA region name where the scanner will be placed. The region expression will be modified, all crystal modules will be subtracted from it