Value of MRA and DSA in diagnosing vertebral arterial insufficiency of cervical spondylosis
- VernacularTitle:MRA与DSA在椎动脉型颈椎病诊断中的应用比较
- Author:
Diange ZHOU
;
Haiying LIU
;
Jian GAO
- Publication Type:Journal Article
- Keywords:
Vertebrobasilar insufficiency;
Magnetic resonance angiography;
Angiography, digital subtraction
- From:
Chinese Journal of Orthopaedics
1996;0(10):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To realize the value of magnetic resonance angiography (MRA) and digital subtraction angiography (DSA) in diagnosing vertebral arterial insufficiency of cervical spondylosis. Methods From Nov. 2001 to Feb. 2004, 35 vertebral arterial insufficiency of cervical spondylosis was diagnosed clinically. There were 11 males and 24 females with a mean age of 58.3 years(range, 23 to 76 years). All the patients were examined by MRA and DSA to investigate the tracks, diameters, and stenosis locations of vertebral articles. Results DSA was positive in 32 patients with 19 ipsilateral and 13 bilateral. Meanwhile, MRA positive were in 29 patients, 14 ipsilateral and 15 bilateral. Among MRA positive patients, excepted 5 cases, all the others were also positive with DSA. Accordance of both methods in the diagnosis of thin veterbral artery was 100%. DSA was better than MRA in the diagnosis of localized stenosis and unilateral veterbral artery absence. MRA was much more useful than DSA in the diagnosis of veterbral artery twisting caused by vertebral instability and bone spurs. Conclusion 1) DSA had more accuracy in diagnosis and distinguishing the source of veterbral artery localized stenosis. Posture changing didn't disturb the examination. Its disadvantages, however, were invasive detection, side-effect and dose limitation of contrast medium. 2) As a non-invasive method, MRA was a useful tool in diagnosing diffused, long segmental artery stenosis and obstruction, and especially available for diagnosing the cervical spondylosis combinated with other type. MRA can scan vertebral disc, spinal cord and other vessels at the same time. The indication of MRA was indefinite diagnosis, aged patients with bad tolerance to DSA. The disadvantage of MRA was its low sensitivity in detecting mild stenosis, non-obstruction artery disease, and posture demand during examination.
