ARIBEX Nomad Pro Veterinary - Usage and Duty Cycle

OPERATOR MANUAL..
5
In implementing a radiation protection program, consult all applicable regulations
governing radiation protection and the use of X-ray equipment,
and ensure full
compliance with any such regulations.
2.2 Usage and Duty Cycle
As a safety feature, NOMAD Pro will not emit X-rays with insufficient voltage (low battery).
The NOMAD Pro is also designed to avoid damage from overheating. The minimum duty cycle rating
for maximum exposure (the relationship between duration and frequency of exposures taken during a
rolling 60 second period) is 1:60. This duty cycle is programmed into your NOMAD Pro. Examples of
optimal use:
Exposure Duration 0.09 sec 0.20 sec 0.40 sec 1.00 sec
Hypothetical Time
Between Exposures
6 seconds 12 seconds 24 seconds 60 seconds
Exposures Per Minute >10 >8 >2 1
Occupational Dose Limit
1
500mSv
50mSv
Occupational Dose Limit Requiring Dosimetry
1
Average Exposure Using NOMAD with D-Speed Film
2
0.43mSv
0.22mSv
Average Exposure Using NOMAD with F-Speed Film or Digital Sensor
2
1) Standards for Protection against Radiation,
10
CFR 20 (US Federal Standards), 1994 (see
also
NCRP Report No. 116 )
2)
"Radiation Exposure with the NOMAD Portable
X
-ray System", Goren AD et al, Dentomaxillofacial
Radiology, 37 (2008), p109
-12; normalized
average (includes leakage and backscatter
radiation) assumes 7,200 exposures per year, and
the average length of exposure for D
-speed = 0.50
seconds, F
-speed = 0.25 seconds, digital sensor =
0.
20 seconds
Comparative Data for Hand and Extremity Exposure (Annual)
X-ray Source Focal
Spot
Fixed Beam Limiting
Device
Backscatter Radiation
Shielding
Primary
Protective Shielding