Cirs Dynamic Phantoms 008A, Руководство пользователя, Страница: 3 / 16

3
The CIRS Dynamic Phantoms are precision instruments for investigating and mini-
mizing the impact of tumor motion inside the lung (Model 008A Dynamic Thorax
and 008A-20). These phantoms provide known, accurate and repeatable three-
dimensional motion for guided radiation therapy.
The phantom bodies represent an average human thorax/pelvis in shape, propor-
tion and composition.
Model 008A
works with a lung-equivalent rod containing a spherical target with
or without various detectors that is inserted into the lung-equivalent lobe of the
phantom. The body is connected to a motion actuator box that induces three-di-
mensional target motion through linear translation and rotation of the lung equiva-
lent rod. Motion of the rod itself is radiographically invisible due to its matching
density with the surrounding material. The target and its motion, given its density
difference, can be resolved. A programmable motion controller is used to drive
the motion actuator.
Model 008A-20
includes only the thorax body and third-axis actuator.
Model 18023-A
shares some components with the CIRS Model 008A Dynamic
Thorax Phantom. As with the Model 008A, target and surrogate motion are inde-
pendently controlled with CIRS Motion Control Software. The graphical user in-
terface provides an unlimited variety of motions while the key differences between
the Model 18023-A and the CIRS Model 008A include the length of phantom
body, location of the moving rod within the lung, and the inclusion of ribs.
Model 18043-A
contains a cylindrical spine insert. The spine insert is trabecular
bone-equivalent and accommodates a film cube with cylindrical critical struc-
ture and dosimetric film for assessment of spinal cord sparing. The insert can be
manually rotated within the phantom body.The 18043-A lung has higher density
than the 008A lung. The 18043-A lung equivalent insert also accommodates a
film cube with a spherical soft tissue target and dosimetric film.
Overview
Key Features
• Complex 3D tumor motion
within the lung
• Sub-millimeter accuracy and
reproducibility
• Motion software enables
different cycles, amplitudes and
wave forms
• Tissue equivalent from 50 keV
to 15 MeV
• TLD, MOSFET, micro-chamber
and film can be placed within
the tumor volume