It’s a CT (computerized tomography) scan. It still uses X-rays but the results are in 3D so one can view “slices” of the image from different perspectives.
The cartilage connecting the sternum to the ribs is in the same plane as the edge of the spine. Cartilage is radiolucent (doesn’t show well in X-rays) so that’s why there’s only the slightest hint of a ribcage - this slice is well past rib bone.
Similarly the shoulder is much closer to the viewer’s perspective in the 3d model, so it’s not shown at all.
It’s a CT (computerized tomography) scan. It still uses X-rays but the results are in 3D so one can view “slices” of the image from different perspectives.
The cartilage connecting the sternum to the ribs is in the same plane as the edge of the spine. Cartilage is radiolucent (doesn’t show well in X-rays) so that’s why there’s only the slightest hint of a ribcage - this slice is well past rib bone.
Similarly the shoulder is much closer to the viewer’s perspective in the 3d model, so it’s not shown at all.