Ensuring Image Quality - KaVo NOMAD PRO 2 Operator's Manual

4.8 Ensuring Image Quality

The following KaVo NOMAD PRO 2 features contribute to high image quality:
• DC voltage X-ray generation is efficient in delivering energy at the level optimized for
diagnostics, with shorter exposure times required.
• The smaller the focal spot, the better the resolution. The KaVo NOMAD PRO 2 has a
small 0.4mm focal spot.
• Absorption of scatter by the KaVo NOMAD PRO 2 backscatter shield reduces incidence
of noise for the image receptor, which tends to increase image contrast.
Motion during Exposures
As with the suspended tubehead of a conventional wall-mounted X-ray system, some
motion of the tubehead during actual exposures is possible. Use both hands to hold the
KaVo NOMAD PRO 2 during the exposure and keep steady. The pistol-grip style is ideal
for keeping hands behind the backscatter shield, positioning and aiming (with line of
sight through the clear shield) so as to achieve a quality image and avoid cone-cutting or
retakes.
Image degradation or blurriness does not result due to motion of the handheld X-ray
source.
Time Settings, Sensors, and Complete Exposures
To ensure image quality, use correct time settings. The KaVo NOMAD PRO 2 comes with
pre-sets to give you a starting point. However, these time settings can be adjusted to
achieve the desired image quality and then saved for future use. See
Menu for further help.
The KaVo NOMAD PRO 2 works with the fastest sensor technologies in the market to
assure that exposure times are as short as possible, also limiting any effects of motion.
Make sure you are as close to the patient's cheek as possible without touching. If your
sensor holder prevents you from getting close enough, you may want to use the Short
Alignment Bars, enabling the KaVo NOMAD PRO 2 to be placed directly against the
positioning ring.
Always double-check for the Incomplete Exposure alarm on the KaVo NOMAD PRO
2 display. The Incomplete Exposure alarm indicates that the trigger was released
prematurely, resulting in an incomplete exposure. To achieve complete exposures, do the
following: quickly press and release the trigger to enable the X-ray and wait for the device
to shift to the Ready state; press and hold the trigger until the audible tones and the
display indicate the X-ray Complete alert.
Section 4.10 Settings
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