What is the measurement taken for lumbar obliques?

The measurement for lumbar obliques is taken 1 inch above the iliac crest. This specific point is critical because it is the area where the lumbar spine is typically visualized in an oblique projection. Positioning the x-ray beam at this location ensures that the relevant lumbar vertebrae are captured clearly, which is essential for accurate diagnosis and assessment.

Choosing this measurement aligns with typical anatomical landmarks, as the iliac crest serves as a prominent reference point for locating the lower lumbar vertebrae. The area above it provides sufficient space to visualize the oblique projections of these vertebrae, preventing overlaps and ensuring clarity in the resulting images. This technique helps radiologists and physicians in identifying conditions affecting the lumbar spine, such as fractures, degenerative diseases, or tumors.