Axial T1 nonenhanced image (D) shows a hypointense mass in the left sacrum with moderate postcontrast enhancement (E) (dashed white arrow).

(a) Sagittal T1-weighted MR image shows a hypointense mass arising from the lower sacrum with a large soft tissue component. (b) Sagittal T2-weighted MR image shows a lobulated mass with a heterogeneous hyperintense signal, invading the bone and soft tissues.

Sep 19, 2021 · A very wide range of lesions can occur in and around the sacrum. Tumors primary sacral tumors malignant sacral chordoma: most common primary sacral tumor 1 …

Feb 21, 2024 · Tarlov cysts, also called perineural or sacral cysts, are pockets of fluid that form around the nerves that make up your spinal cord. Most often, you will find cysts on your sacrum or lower...

Nov 24, 2022 · Low T1 bone lesions or T1 hypointense bone lesions are radiological terms to categorise bone lesions according to their visually perceived low signal on T1 weighted images.

Nov 23, 2012 · Axial T1-weighted MR image shows osseous lesion involving upper sacrum. Areas of decreased signal intensity correspond to mineralized matrix within tumor (arrowheads).

Nov 23, 2012 · Coronal T1-weighted (A) and STIR (B) images of sacrum show destructive mass in left side of sacrum that is T1 hypointense and STIR hyperintense. Mass has eroded through cortex and extends into presacral space, left sacroiliac joint, and left S1 and S2 neural foramina, engulfing sacral plexus.

Nov 1, 2024 · The sacrum is the penultimate segment of the vertebral column and also forms the posterior part of the bony pelvis. It transmits the total body weight between the lower appendicular skeleton and the axial skeleton.

On T1-weighted MRI, sacral metastases typically appear as hypointense (dark) areas compared to the normal fatty marrow, which exhibits a high signal intensity. The infiltrative nature of metastatic lesions results in the replacement of normal …

Apr 8, 2019 · Angle OBLIQUE to sacrum If hardware is present: Do Axial and Coronal STIR instead of fat-sat mid-TE If with Contrast, do non-fat-sat T1 post-contrast