HATCH X-RAY Operating Manual
30
Anatomy
kV mA
As per R20
chart Time
(mS)
Reference dose for
different loading
factors
Dose
Meter
Reading
(mR)
Dose
Meter
Reading
(mR)
Cone
Cone
Short Long
Short
Long
Adult
Bitewing
70
6
125
360
10.56
30.3
Endodontic
Incisors
Maxilla
70
6
160
450
13.65
38.1
Mandible
70
6
125
360
10.56
30.3
Canine
Maxilla
70
6
200
630
17.05
53.37
Mandible
70
6
140
400
11.93
33.7
Molar
Maxilla
70
6
220
710
18.76
60.25
Mandible
70
6
160
450
13.65
38.1
Normal
Exposure
Incisors
Maxilla
70
6
160
450
13.65
38.1
Mandible
70
6
125
360
10.56
29.38
Canine
Maxilla
70
6
200
630
17.05
53.27
Mandible
70
6
140
400
11.93
33.7
Molar
Maxilla
70
6
220
710
18.76
60.25
Mandible
70
6
160
450
13.65
38.1
Occlusal
Maxilla
70
6
250
710
21.15
60.25
Mandible
70
6
250
710
21.15
60.25
Child
Bitewing
70
8
71
200
5.99
16.9
Endodontic
Incisors
Maxilla
70
6
110
320
9.35
27.34
Mandible
70
8
71
200
5.99
16.9
Canine
Maxilla
70
6
140
450
11.93
38.1
Mandible
70
6
100
280
8.49
23.88
Molar
Maxilla
70
6
160
500
13.65
42.41
Mandible
70
6
110
320
9.35
27.34
Normal
Exposure
Incisors
Maxilla
70
6
110
320
9.35
27.34
Mandible
70
8
71
200
5.99
16.9
Canine
Maxilla
70
6
140
450
11.93
38.1
Mandible
70
6
100
280
8.49
23.88
Molar
Maxilla
70
6
160
500
13.65
42.41
Mandible
70
6
110
320
9.35
27.34
Occlusal
Maxilla
70
6
180
560
15.32
47.4
Mandible
70
6
180
560
15.32
47.4
Table 2
: Default exposure values for short / long cone slow film – Mode 1
Summary of Contents for X-RAY
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