Lunar DPX-IQ, Operator'S Manual, Page: 110 / 166

E-10 Forearm DPX-IQ Operator’s Manual
E.4.3 Examine ROI Position
Examine ROI position at the Auto Analysis screen: select
$
at the Bone Results
screen. The Auto Analysis screen shows the ROI(s) on the scan image.
Refer to the basic ROI position rules that follow (figure E-13):
• Each ROI contains four bone edges: the left and right ulna (
➊
) edges and the left
and right radius (
➋
) edges.
• The Reference Point (
➌
) is positioned on the first scan line where the radius and
ulna meet as you move up the forearm to the wrist.
Figure E-13. Reference point and ROI position
E.4.4 Examine ROI Heights
The height of each ROI is shown on the right side of the Auto Analysis screen. Refer
to the information that follows to examine the height of each ROI.
Ultradistal ROI
The recommended height of the ultradistal ROI is 15 mm. If the radius endplate is
contained in the ROI, move the Ultradistal ROI down until the endplate is not
included (figure E-14).
33% ROI
The recommended height of the 33% ROI is 20 mm and is centered at 33.33% of the
total arm length as measured at the ulna styloid process (figure E-14).