Selecting an entry in the organ panel with the right mouse button
displays a dialog for setting attributes for that organ. (The
right button on the Extra Torso Fat checkbox shows the
Extra Fat
window.)
The first checkbox, Selected for Model, is tied to the selection
checkbox on the organ panel. The organ can be included or excluded
in either place.
The separate checkbox is shown for organs that can be either modeled
as a single MCNP cell or as two or more cells. For bilateral
organs-Lungs, Adrenals, Kidneys, Testes, and Breasts-the checkbox
is labeled Separate Left/Right Components. When unchecked, the
left and right components are treated as a single cell; when checked,
they are modeled as two distinct cells. There is no provision
to include the left or right component alone.
The Organs menu
items Separate Components for All
and No Separate Components affect the model for all applicable
organs.
The Separate Components models for the skeleton and heart are not yet implemented. The model for the heart will have separate cells for each of its four chambers. The skeleton consists of separate cells for the skull/face, arm bones, rib cage, clavicles, spine, scapulae, pelvis, and leg bones. When implemented, the Separate Components model will give left and right cells for the bilateral components. Additional subdivisions could be made, depending on user requirements. We may also permit subdivision of the spine and other long bones for differential dose calculations.
Some organs-Heart, Gall Bladder, Stomach, Small Intestine, the
four Colons, (urinary) Bladder, and Pregnant Uterus-may be modeled
as separate cells for the wall and contents. The contents of
the Pregnant Uterus includes multiple cells describing fetal detail.
When the Separate Wall + Contents checkbox is unchecked, the
wall and contents are modeled as a single cell. The wall + contents
model for the heart is not yet implemented.
The Organs menu
item Wall+Contents for All and No
Wall+Contents items affect the model for all applicable organs.
The Tally Type pull down menu associates an MCNP tally with the
organ. Current choices are
- No Tally
- F6N Neutron Cell Energy Deposition
- F6P Photon Cell Energy Deposition
- F6N,P Cell Energy Deposition
Further choices can be added according to user requirements.
There are no Tally menus for Undifferentiated Tissue, Skeleton,
and Skin. These also can be added. The MCNP input file will
contain a MODE N card if only F6N tallies have been chosen, a
MODE P card if only F6P tallies are present, and a MODE NP if
both or a F6N,P tally are selected.
All tallies are reset to none with the Clear Tallies item
under the Organs menu.
The Sabrina Settings panel permits choice of the color assigned
to the organ, from the pulldown menu, and the transparency state.
These settings only affect the Sabrina input file, not the MCNP
input file. For organs with a separate wall + contents model
enabled, two Sabrina Settings panels are shown, one for the wall,
the other for the contents.
Last modified: September, 2004
Kenneth A. Van Riper /
email