Users Manual Part 1

Clinical User’s Guide IBA | 7-7|
Volume 1 - Treatment Session
|Part II - Using Treatment Room Equipment Moving the Patient Positioning Devices |
 the defined absolute accuracy
The dimensions of the extended treatment volume are:
 50 cm parallel to the table top’s short axis
 100 cm parallel to the table top’s long axis
 40 cm perpendicular to the table top
The extended treatment volume contains the origin of the TTCS (Table Top
Coordinate System), also named Tool Center Point (TCP), as the origin. This point is
centered with respect to the length and width of the extended treatment volume and
10 cm above its inferior internal surface. This point is located 850 mm away from PPS
axis joint 6 along the longitudinal direction of the couch.
Figure 7-2. Treatment Volume
(drawing not to scale)
40 cm
50 cm
X
t
Y
t
Z
t
100 cm
10 cm
The origin of the TTCS (also known as the Tool
Center Point) is centered with respect to the
length and width of the extended treatment
volume and 10 cm above its inferior internal
surface. It is located 85 cm away from PPS axis 6.
Extended Treatment Volume: Virtual
box-shaped volume attached to the
table top which includes all points
that can be brought to isocenter to
be irradiated by the proton beam
with a PPS Top Rotation of -185°/5°.
Its dimensions are 50 cm
x100cmx40cm.
Refer to section
“Using the Couch” for
details.
85 cm