X-Ray Tube Assembly Technical Specifications

Table 4 - Filtration of the Material in the X-Ray Field

Standard	Compliance
IEC 60601-1-3	Compliant
Nominal value of the inherent filtration at 70 kV	2.5 mm (0.10”) eq. Al
Nominal value of the supplementary filtration at 70 kV	1.5 mm Al or 2.0 mm Al or 0.15 mm Cu or 0.7 mm Cu
Nominal value of the total filtration at 70 kV	>2.5 mm (0.10”) eq. Al
Filtration value for the enclosure of the X-ray tube (at 100 kV)	0.2 mm (0.008")
Filtration value for the enclosure of the image receiver unit (at 100 kV)	0.2 mm (0.008")
Filtration value for the sensor case	0.3 mm (0.012") eq. Al

The X-ray generator comprises the following:

A transformer and an X-ray tube and their associated electronic components immersed in oil.
An aluminum filter, which enhances the quality of the beam and reduces the dose received by the patient.
A lead collimator, which limits the size of the beam at the image receiver unit.
A thermal cutout, which trips at an operating temperature between 63 to 70 °C (±5 °C).
A copper filter.

Figure 3—Location of the Reference Axis for Panoramic and 3D Modality

Reference Axis Panoramic and 3D Modality

Figure 4—Location of the Reference Axis for Cephalometric Modality (with Scan Ceph Configuration)

Reference Axis Cephalometric Modality with Scan Ceph Configuration

Table 5—Technical Specifications of the X-Ray Tube Assembly

Standard	Compliance
Manufacturer	Trophy
Degree of protection against electric shock	Class I
Degree of patient protection from the parts applied to the leakage current	Type B
Operation mode	Continuous operation with intermittent loading
Maximum accumulated heat	33 kJ
Maximum continuous heat dissipation	60 W
Tolerances on the position of the focal spot	± 1.5 mm
Continuous Anode Input Power that corresponds to the maximum specified energy input to the Anode	60 W
Radiation leakage after one hour's operation (maximum utilization rate of 60W)	< 1 mGy
Weight	8.2 kg
Dimensions	235 x 245 x 120 mm

IMPORTANT: To increase the operating life of the X-ray tube, at the first loading or if the unit has not been used for a month, you must follow the following procedures before use.

In the 3D Acquisition interface, select the following series of parameter settings:

70 kV – 6.3 mA
80 kV – 10 mA
85 kV – 10 mA
100kV – 8 mA
120 kV – 8 mA

Leave the X-ray room and close the door. For each parameter setting, from the X-ray remote control, press and hold the button to launch the X-ray.

The unit is now ready to be used for acquisition.

Figure 5—Heating and Cooling Curves of the X-Ray Tube DF-071G

Heating and Cooling Curves of the X-Ray Tube DF-071G

Figure 6—Heating and Cooling Curves of the X-Ray Tube OX/120-0307

Heating and Cooling Curves OX120-0307

Table 6—Beam Limitations of the X-Ray Tube Assembly

Manufacturer	Trophy
Type	Rigidly mounted unit with fixed window dimensions, not removable, and integrated x-ray generator
Maximum symmetrical field of radiation in panoramic mode at a distance of 616 mm from the focal point	6.4 mm x 140 mm
Maximum symmetrical field of radiation in panoramic mode (sinus exam) and in 3D mode at a distance of 616 mm from the focal point	120 mm x 140 mm
Maximum symmetrical field radiation in cephalometric mode (with Scan Ceph configuration only) at a distance of 1700 mm from the focal point	5 mm x 260 mm
Location of the reference axis	See Figure 3 and Figure 4

Table 7—Characteristics of the X-Ray Tube

Manufacturer’s name	Toshiba or Canon	CEI
Type	DF-071G	OX/120-0307
Nominal high voltage	120 kV	120 kV
Nominal anode input power (at 1.0 s)	1360 W for Large Focus 440 W for Small Focus	1900 W for Large Focus 500 W for Small Focus
Anode heat storage capacity	28 kJ	33 kJ
Nominal focal spot size (EN 60336)	0.7 mm for Large Focus 0.3 mm for Small Focus	0.7 mm for Large Focus 0.3 mm for Small Focus
Anode materials	Tungsten	Tungsten
Target angle	12°	12°
Inherent filtration	0.8 mm (0.032") eq. Al	0.5 mm (0.028") eq. Al

Figure 7—X-Ray Tube Drawing: DF-071G

X-Ray Tube Drawing: DF-071G

Figure 8—X-Ray Tube Drawing: OX/120-0307

X-Ray Tube Drawing: OX/120-0307