"The diagnosis of lumbar spondylolysis on routine axial CT images of the abdomen and pelvis covering the spine, and hence the Darth Vader sign, show considerable inter-observer agreement and excellent accuracy 1,2."
"The diagnosis of lumbar spondylolysis on routine axial CT images of the abdomen and pelvis covering the spine, and hence the Darth Vader sign, show considerable inter-observer agreement and excellent accuracy 1,2."