CT and MRI in diagnosis of avascular necrosis of the vertebral body.
- Author:
Sheng YANG
1
;
Jian-min LU
;
De-wei ZHAO
;
Dan-yang ZHOU
;
Xin-lu LI
;
Xing QIU
Author Information
- Publication Type:Journal Article
- MeSH: Aged; Aged, 80 and over; Diagnosis, Differential; Female; Humans; Lumbar Vertebrae; pathology; Magnetic Resonance Imaging; Male; Middle Aged; Osteonecrosis; diagnosis; etiology; surgery; Retrospective Studies; Thoracic Vertebrae; pathology; Tomography, X-Ray Computed
- From: China Journal of Orthopaedics and Traumatology 2011;24(6):496-499
- CountryChina
- Language:Chinese
-
Abstract:
OBJECTIVETo evaluate the value of CT and MRI in the diagnosis of avascular necrosis of the vertebral body (ANV).
METHODSTwelve ANV patients were retrospectively analysed by their medical history, clinic manifestation, CT and MRI. Twelve AVN patients were treated with percutaneous vertebroplasty (PVP). The pain level of each patient was assessed, both before and after the procedure, using a visual analogue scale (VAS).
RESULTSAll the patients had ANV in the thoracolumbar spine. The intravertebral vaccum phenomenon (VP), with gas or fluid-like collection, was seen on computed tomographic (CT) images and magnetic resonance images (MRI). In the early stages, the VP zone was characterized by fluid-like collection, and was low intensity on T1, high intensity on T2. In the latter stages, the margin of VP zone had sclerotic change on CT scan. VAS score decreased from preoperative (9.08 +/- 0.76) to (2.33 +/- 1.43) at 3 days after PVP.
CONCLUSIONANV must be considered as a possible diagnosis of VP secondary to osteoporotic vertebral fractures. Both CT and MRI could provide reliable diagnostic proof for ANV. PVP is proved to be an effective and safe procedure for the treatment of ANV, and could provid quick pain relief.
