Oblique L-Spine
Oblique L-Spine
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Oblique L-spine. We followed the Technique by Proportional Anatomy table to get from an AP pelvis to an oblique L-spine.
The table says that the AP pelvis is similar to an AP L-spine. However, a 45˚ oblique L-spine is equal to 2X the mAs to of the AP L-spine.
Therefore, we kept the kVp at 85 and multiplied 9 mAs by 2, resulting in mAs of 18. These technical factors resulted in a DI value of 0.2.
BREAKDOWN
BREAKDOWN
Technique by Proportional Anatomy states:
Technique by Proportional Anatomy states:
AP Pelvis = AP L-Spine
Oblique L-Spine = 2x AP L-Spine
Techniques Used and Resulting DI:
Techniques Used and Resulting DI:
Referenced Technique: AP Pelvis = 85kVp 9mAs DI:-0.1
Final Attempt #1: Oblique L-Spine = 85kVp 18mAs DI: 0.2
Begin with an optimal technique for an AP Pelvis.
Use optimal technique for AP Pelvis for AP L-Spine.
Solve for 2x the mAs of AP L-Spine for Oblique L-Spine.
Shoot first attempt (Result: in range: 0.2)
85kVp @ 9mAs
85kVp @ 9mAs
9mAs x 2 = 18mAs
85kVp @ 18mAs
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