Build a systematic approach to cross-sectional anatomy and CT display settings.
Understand the signal.
CT uses x-rays to construct cross-sectional images. Different tissues attenuate x-rays differently, producing contrast between air, soft tissue, bone, and other structures.
Windowing changes the display.
Window width controls the displayed range of values. Window level sets its midpoint. The underlying image data stay the same as you adjust the grayscale display.
Follow an anatomical route.
Begin with orientation, then inspect one organ or vessel over consecutive slices. Use the 3D teaching model to support spatial understanding and return to the CT to verify what is visible.
Separate modality from protocol.
Contrast timing and scan technique affect the information an examination provides. CT involves ionizing radiation; an appropriate examination depends on the clinical question and patient context.
TRY IT IN CONTEXT
Move from theory to the image.
Open the pancreas CT lab. Follow the pancreas across several slices, then change the display settings and compare the visibility of nearby structures.
Open the anatomy labCompletion is a personal study marker, stored in this browser.