DenOptix QST
032-0265-EN Rev 14-2
Intraoral Equipment Exposure Times (Seconds &
Impulses)
Reference conditions:
• Adult patient
• Anodic
current 7 mA.
• Source to Detector Distance SSD = 250 mm (10 inches)
• Total (inherent) filtration 2 mm Al equip.
Unless the image is grossly over- or u
nder
-exposed, image density can be
corrected by subsequent software processing (contrast/brightness — see Imaging
Software User Manual and Installation Guide).
1
One impulse is equal to .017 sec. at 60 Hz. The recommended number of
impulses can be adjusted as necessary for proper exposure, resulting in adequate
image density and contrast and low noise gratuity.
Panoramic/Cephalometric Equipment
The DenOptix QST system requires no adjustments to the panoramic/
cephalometric exposure settings (kV, mA or time). The DenOptix QST system can
be used with almost any existing panoramic/cephalometric unit, regardless of age
or manufacturer.
The use of a cassette without an intensifying screen is highly recommended. If you
c
hoose t
o use a cassette with an intensifying screen, you must at a minimum
remove the front screen. If the intensifying screens are not removed, you will get a
low quality image due to the shielding effect from a decreased dose reaching the
imaging plate. To remove the intensifying screens, follow the directions below.
DC SUPPLY
AC SUPPLY
50
kV 60 kV 60 kV
65 kV
65 kV
70 kV
70 kV
75 kV
Lower incisor/
cuspid
0.32 sec.
19 impulses
0.25 sec.
15 impulses
1
0.16 sec.
20 imp.
0.16 sec.
10 imp.
0.12 sec.
7 imp.
Lower premolar 0.40 sec.
24 imp.
0.32 sec.
19 impulses
0.16 sec.
25 imp.
0.16 sec.
10 imp.
0.12 sec.
7 imp.
Lower molar 0.50 sec.
30 imp.
0.40 sec.
24 imp.
0.20 sec.
32 imp.
0.20 sec.
12 imp.
0.16 sec.
10imp.
Upper incisor/
cuspid
0.40 sec.
24 imp.
0.32 sec.
19 imp.
0.16 sec.
10 imp.
0.16 sec.
10 imp.
0.12 sec.
7 imp.
Upper premolar 0.50 sec.
30 imp.
0.40 sec.
24 imp.
0.25 sec.
15 imp.
0.20 sec.
12 imp.
0.16 sec.
10 imp.
Upper molar 0.64 sec.
38 imp.
0.50 sec.
30 imp.
0.32 sec.
19 imp.
0.25 sec.
15 imp.
0.20 sec.
12 imp.
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