Table 2:

MR imaging findings in 7 patients with unusual manifestations of vertebral osteomyelitis

Patient No.	Involved Bones^*	Intraosseous Lesions	SI of Intraosseous Lesions			Enhancement of Intraosseous Lesions	Rim Sign	Halo Sign	Preservation of Intervertebral Disks	Soft-Tissue Inflammation^†
Patient No.	Involved Bones^*	Intraosseous Lesions	T1W	T2W	STIR	Enhancement of Intraosseous Lesions	Rim Sign	Halo Sign	Preservation of Intervertebral Disks	Soft-Tissue Inflammation^†
1	Spine (L5)	Solitary	↓	−− or ↑	↑	Global	Yes	Yes	Yes	Yes
2	Spine (S1)	Solitary	↓	↑	↑	Global	Yes	Yes	Yes	Yes
3	Spine (T10, L1, upper sacrum)	Multiple	↓	↑	↑	Global	Yes	Yes	Yes	Yes
4	Spine (T5-L5, upper sacrum), bilateral pelvic girdles	Multiple	↓	−− or ↑	↑	Global or marginal	No	Yes	Yes	Yes
5	Spine (whole spine), bilateral ribs	Multiple	↓	−− or ↑	↑	Global	Yes	Yes	Yes	No
6	Spine (whole spine)	Multiple	↓	−− or ↑	↑	Global or marginal	Yes	Yes	Yes	Yes
7	Spine (whole spine), bilateral ribs, sternum, bilateral pectoral girdles, bilateral pelvic girdles	Multiple	↓	−− or ↑	↑	Global or marginal	Yes	Yes	Yes	Yes

Note:—SI indicates signal intensity; T1W, T1-weighted MR images; T2W, T2-weighted MR images; STIR, short τ inversion recovery; ↑, hyperintense; −−, isointense; ↓, hypointense.
* Posterior element involvement of the vertebrae is noted in 3 patients (patients 5–7).
† Limited amount of the paraspinal or epidural inflammatory tissue is noted in 6 patients (patients 1–4, 6, and 7).