Radiology Key

Fig. 5.1 Vertebral hemangioma, CT. Axial CT image (a) of T12 of a 60-year-old man with a vertebral hemangioma shows the typical polka dot sign representing reinforced trabeculae (arrow). Reconstructed…

Fig. 4.1 Hyperintense focal pattern, normal variant-mosaic. Hyperintense focal pattern due to multiple fatty deposits (arrows) in three different patients with a mosaic pattern of red to yellow marrow conversion….

Fig. 8.1 Intravertebral vacuum cleft sign, plain radiography. Lateral view of the thoracic spine of a 60-year-old woman shows a compressed thoracic vertebral body with gas beneath the anterior aspect…

Fig. 2.1 Yellow marrow, high T1 signal intensity. Sagittal T1-weighted image of the lumbosacral spine of a 65-year-old woman shows high-signal-intensity vertebrae due to predominance of yellow marrow Fig. 2.2…

Fig. 9.1 Fatty marrow conversion after radiotherapy. Sagittal T1-weighted image (a) of the lumbosacral spine of a 68-year-old man with a history of radiation therapy to the pelvis for prostate…

Fig. 6.1 Hypointense diffuse pattern, osteolytic metastases. Sagittal T1-weighted image of the lumbosacral spine of a 43-year-old woman with breast cancer and lytic bone metastases shows diffusely hypointense marrow with…

Fig. 3.1 Normal spinal bone marrow, 2 months. Sagittal T1-weighted image (left) of the spine of a 2-month-old boy shows biconvex shape of vertebral bodies with large hyperintense cartilaginous endplates…

Fig. 7.1 Transient osteoporosis of the hip, MR imaging. Coronal T1-weighted image (a) of a 48-year-old man who presented with acute left hip pain shows hypointense bone marrow edema in…

Fig. 1.1 Bone marrow vasculature: schematic representation. Note the anastomoses between radial branches of the nutrient artery and branches derived from periosteal arteries. Also note the sinusoids formed from the…