GE AMX 4 Plus Portable GE X-ray Machine
GE AMX 4 Plus Features
The GE AMX 4 Plus portable GE X-ray machine is designed for easy
operation. Each time you push a button, you can depend on the
same consistent radiographic quality that is seen in a full-scale
X-ray. Since the AMX 4 Plus is battery operated, there is no need
to plug in your mobile X-ray unit before taking exposures. This
makes it easily adapted to operating, intensive care, and
emergency room applications. Mobility and ease-of-use make the
AMX-4 Plus ideally suited for all routine radiographic
procedures, within intensive care units, cardiac care units,
emergency, and operating rooms, pediatrics, neonatal units,
orthopedics, and clinics.
Analog X-ray system in a compact,
easy-to-maneuver package.
Up to 50 high-quality exposures with a single
charge.
Dual drive motors and oversized casters that
facilitate movement even in taxing environments.
Operator controls are microprocessor-based,
combining the latest technology with simplicity of design.
Message display to provide helpful information
on the operating status of the system.
Ergonomic Handswitch Controls.
Compact manual Collimator with built-in
SIDbutton on collimator face.
GE AMX 4 Plus Specifications
Dimensions
Height: 70 inches (177.8 cm) for models
2169360−6, 2236420−6, and 2275938−6, −12, −13, −14, −15
Height: 76 inches (193 cm) for all other
models.
Width: 25−3/16 inches (64 cm)
Length: 45−3/8 inches (115.3 cm)
Weight: 1080 pounds (490 kg)
Environmental Limits
Operating temperature range: 59 to 100 Degrees
Fahrenheit (15 to 38 Degrees Celsius) at 80% non−condensing
humidity.
Storage temperature range −40 to +140 Degrees
Fahrenheit (−40 to +60 Degrees Celsius)
Maximum operating altitude: 8,000 feet (2440
meters)
Movements
Tube vertical movement measured at the focal
spot (arm extended)
Range at least 46.5
inches
Lowest position 26.1
inches
Highest position 72.6
inches)
The horizontal movement measured at the focal
spot relative to column face is 24 inches (61.0 cm) minimum, to
40 inches (101.6 cm) maximum.
Tube Column rotation measured from horizontal
arm latch is +/−270 degrees.
Tube and yoke rotation around Horizontal Arm
measured from tube port down position:
Range 360 degrees;
Detent locations,
+/−90, and +/−180 degrees.
Tube Trunnion rotation measured from tube port
down position:
Range 120 degrees;
Forward 110
degrees;
Backward 10
degrees;
Detent 0 degrees, and
90 degrees.
Collimator Rotation measured from the front of
the collimator with the tube port facing down:
Range 180 degrees;
Right 90 degrees;
Left 90 degrees;
Detent 0 and 90
degrees.
Drive Speed
Drive Speed is 264 feet (670.5 cm) per minute
+/− 25%;
Maneuvering Speed is 30% to 60% of drive
speed.
kVp Accuracy
Rise time of the kVp wave form from 10% to 90%
of the maximum kVp is 1.2 millisecond or less.
Fall time of the kVp wave form from 90% of the
maximum kV to 20 kV is 2.5 milliseconds or less.
Accuracy of the kVp wave form to selected kVp
is +/− 8% of the value displayed on the operator panel for the
first 20 ms and +/− 5% after 20 ms. Accuracy applies within the
range of the bar graph battery charge indicator.
Collimator Function
Type: Manual
Minimum source to skin distance is limited to
more than 30 centimeters by the skin spacers at the beam exit of
the collimator.
Full 17 by 17 inch (43 by 43 centimeters)
radiographic coverage at 40 inch (1.02 meter) Source to Image
Distance.
Minimum inherent filtration of 2.0 mm aluminum
equivalent at 100 kVp.
Collimator Light Field Intensity
The average illumination at a distance of 100
cm (39.37 inch) from the focal spot shall be 16 foot candles (170
lux) or more.
Generator Performance and Tubes
0.75 mm focal spot (NEMA): 3-inch rotating
anode: GE X-Ray tube model HRT09.
275,000 HU anode heat storage capacity.
15° target angle.
Low speed (3,000 rpm) operation only (See
Product Data Sheet D1046)
The generator is closed loop kVp design using
microprocessor regulation to assure constant and accurate kVp at
all battery conditions.
Battery Specifications
Nine 12.9 volt batteries connected in series
provide approximately 116 volts at full charge.
Battery Capacity
The GE AMX 4+ battery capacity can be measured
by one of the following five methods. All capacities are measured
after the AMX−4+ has been charged to the “CHARGE COMPLETE” state.
Available capacity as stated applies only to new battery sets
free of defective cells. Capacity may decrease as the battery
nears the end of its useful life.
Method 1: Exams
The GE AMX 4+ batteries will provide capacity
for more than 20 typical EXAMs. An “EXAM” is defined as:
Two 70 kVp, 10 mAs
X−ray exposures including:
> 7 seconds of prep
(rotor and filament drive)
> 25 seconds of
field light
5 minutes of drive
time
9 minutes of idle
time
The formula in the “VARIED USAGE” section can
be used to determine the number of total EXAMs available for
usage regimes different from this typical case.
Method 2: X−ray Exposures
The GE AMX 4+ batteries will provide enough
capacity for 165 or more 100 kVp, 100 mAs X−ray exposures. Each
exposure includes 4 seconds of prep (rotor and filament drive)
time and 30 seconds of idle time for battery recovery. This
number may be reduced by additional idle time required for X−ray
tube cooling.
Method 3: Drive Time
The AMX 4+ batteries will provide enough
capacity for 140 minutes of continuous drive time. This time is
typically independent of driving conditions, however, it may be
reduced if a significant portion of the drive is on carpeting or
up ramps
Method 4: Idle Time
The AMX−4+ batteries will provide capacity for
23.3 hours of continuous idle time. “Idle” is the time when the
AMX 4+ is ON but not being used.
Method 5: Varied Usage
For varied usage, the AMX 4+ batteries will
provide capacity according to the following formula:
{ (idle time in
minutes ) _ 3} +
{ (drive time in
minutes ) _ 30} +
{ ( field light time
in minutes ) _ 25 } +
{ ( prep time in
minutes ) _ 30} +
{ ( exposure energy* )
_ 2.17} = 4200
*exposure energy =
cumulative { ( kVp _ mAs ) _1000 }
EXAMPLE: Assume one desires to estimate the
number exams available from an AMX 4+ used in a particular
pediatric ward. It is determined that a typical exam for this
case is comprised of:
Two 70 kVp, 0.8 mAs
X−ray exposures including:
> 3 seconds of prep
> 15 seconds of field light
1 minute of drive
5 minutes of idle
Using the above
formula we can estimate the number of exams as follows:
each EXAM uses { (5 idle minutes ) _ 3} + { (1 drive minutes ) _
30} + 2 x [ { (15 _ 60 field light minutes ) _ 25} + { (3 _ 60
prep minutes ) _ 30} + { ( (70 kVp _ 0.8 mAs ) _ 1000 ) _ 2.17} ]
= 60.7
therefore the total number of typical EXAMs available is: 4200 _
60.7 = 69