When true 400 speed is accomplished using green Ortho film and Ortho screens you might have to slightly lower kVp.
| POS. | MAS. | DIST. | GRID or BUCKY | MA. | Rare Eath Screen | ||||||||||||||||||||||||
| Thickness of Part in Centimeters | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | ||||||
| Cervical Spine | A.P. | 16.7 | 40 | YES | 200 | 1/12 | 56 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 94 | 96 | 100 | ||||||||||
| Cervical Spine | LAT. | 30 | 72 | YES | 200 | 3/20 | 56 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 94 | 96 | 100 | 104 | |||||||||
| Dorsal Spine | A.P. | 80 | 40 | YES | 200 | 8/20 | 54 | 58 | 62 | 66 | 70 | 74 | 78 | 82 | 86 | 90 | 94 | 98 | 100 | 104 | 108 | ||||||||
| Dorsal Spine | LAT. | 80 | 40 | YES | 200 | 8/20 | 62 | 66 | 70 | 74 | 78 | 82 | 86 | 90 | 94 | ||||||||||||||
| Lumbar Spine | A.P. | 120 | 40 | YES | 200 | 12/20 | 54 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | 100 | 104 | 108 | 112 | ||||||||
| Lumbar Spine | LAT. | 200 | 40 | YES | 200 | 1 Sec | 62 | 66 | 70 | 74 | 78 | 82 | 86 | 90 | 94 | 98 | 102 | 106 | 110 | ||||||||||
| Pelvis | A.P. | 80 | 40 | YES | 200 | 8/20 | 60 | 64 | 68 | 72 | 74 | 78 | 82 | 86 | 90 | 94 | 98 | 102 | 106 | 110 | 114 | ||||||||
| Skull | ALL | 45 | 40 | YES | 300 | 3/20 | 52 | 56 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | ||||||||||||
| Mandible | P.A. | 25 | 40 | YES | 300 | 1/12 | 56 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | 100 | |||||||||||
| Mandible | LAT. | 3.3 | 30 | YES | 100 | 1/30 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | 100 | 104 | |||||||||||
| POS. | MAS. | DIST. | GRID or BUCKY | MA. | Rare Earth Screen | ||||||||||||||||||||||||
| Thickness of Part in Centimeters | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | ||||||
| Stomach | P.A. | 40 | 40 | YES | 200 | 4/20 | 70 | 74 | 78 | 82 | 86 | 90 | 94 | 98 | 102 | 106 | 110 | 114 | |||||||||||
| Colon | P.A. | 40 | 40 | YES | 200 | 4/20 | 70 | 74 | 78 | 82 | 86 | 90 | 94 | 98 | 102 | 106 | 110 | 114 | |||||||||||
| Kidney (K.U. B.) | A.P. | 45 | 40 | YES | 300 | 3/20 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | 100 | 104 | 108 | ||||||||||
| Sinus (Nasal) | LAT. | 25 | 40 | YES | 300 | 1/12 | 68 | 72 | 76 | 80 | 84 | 88 | 90 | 94 | 98 | 102 | |||||||||||||
| Sinus-Maxillary Frontal Sphenoid | 45 | 40 | YES | 300 | 3/20 | 52 | 56 | 60 | 64 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | |||||||||||||
| Mastoid (Law's Pos) | LAT. | 6.7 | 30 | YES | 200 | 1/30 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | ||||||||||||||
| POS. | MAS. | DIST. | GRID or BUCKY | MA. | Rare Earth Screen | ||||||||||||||||||||||||
| Thickness of Part in Centimeters | 2 | 4 | 6 | 8 | 10 | 12 | 14 | 16 | 18 | 20 | 22 | 24 | 26 | 28 | 30 | 32 | 34 | 36 | 38 | 40 | 42 | 44 | 46 | ||||||
| Shoulders | A.P. | 6.7 | 40 | YES | 200 | 1/30 | 56 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | 100 | |||||||||||
| Upper Ribs | P.A. A.D. |
6.7 | 40 | YES | 200 | 1/30 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | 100 | |||||||||||||
| Lower Ribs | P.A. A.D. |
30 | 40 | YES | 200 | 3/20 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | 100 | 104 | 108 | 110 | |||||||||||
| Chest | P.A. | 5 | 72 | NO | 300 | 1/60 | 54 | 58 | 62 | 66 | 70 | 74 | 78 | 82 | 86 | 90 | 94 | 98 | 102 | 106 | |||||||||
| Chest | LAT. | 16.7 | 72 | NO | 200 | 1/12 | 52 | 56 | 60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | 100 | 104 | |||||||||
| Chest | P.A. | 5 | 72 | YES | 300 | 1/60 | 64 | 68 | 72 | 76 | 80 | 84 | 88 | 92 | 96 | 100 | 104 | 108 | 112 | 116 | |||||||||
| Chest | LAT. | 16.7 | 72 | YES | 200 | 1/12 | 62 | 66 | 70 | 74 | 78 | 82 | 86 | 90 | 94 | 98 | 102 | 106 | 110 | 114 | |||||||||
| Extremities | ALL | 4.2 | 40 | NO | 50 | 1/12 | 50 | 54 | 58 | 62 | 66 | 70 | 74 | 78 | 82 | 84 | |||||||||||||