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advanced positioning bone age, survery and lengths
| Question | Answer |
|---|---|
| How is skeletal maturation determined? | appearance, size and differentiation of various ossification centers |
| A bone age study consists of what radiograph? | a PA left hand and wrist |
| Differences in skeletal maturation can be attributed to what? | genetics, nutrition, race |
| Bone age studies for children aged 1-2 years are taken how? | AP left knee |
| Why are bone surveys done? | to evaluate the extent of bone cancer due to metastasis |
| What site is the most common for skeletal metastases? | vertebral column |
| What projections are usually routine for a bone survey? | AP/lat skull, AP/lat C, T and L-spine, AP pelvis, Femur, tib-fib, PA CXR |
| Orthoroentgenography | bone length study |
| If both limbs are to be radiographed during a bone length study, what must be done? | separate the ankles 5-6 inches |
| Where should the ruler be placed for a single limb leg length study? | under the limb |
| What tube angle is used on each leg length projection? | perpendicular |