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Kraniozervikale Dissektionen: Untersuchungsstrategien in der MR-Tomographie und MR-Angiographie
- Source :
- RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren. 167:565-571
- Publication Year :
- 1997
- Publisher :
- Georg Thieme Verlag KG, 1997.
-
Abstract
- PURPOSE To define the diagnostic efficacy of MR imaging, "time of flight" (TOF) and phase contrast (PC) MR angiography in craniocervical arterial dissections. MATERIAL AND METHODS The MR examinations of 16 patients with proven arterial dissections (n = 20) were retrospectively analysed by three independent readers. The MR protocol included T1w spin echo sequences with and without fat saturation (SPIR), T2w-turbo-spin echo, 2D- and 3D-TOF- and 3D-PC-MRA. The study was undertaken to assess the diagnostic sensitivity of each technique in detecting typical pathological features. RESULTS The overall sensitivity was best in 3D-PC-MRA; reaching 88% of all possible points. Intramural haematoma could be easily detected with T1W spin echo with fat saturation (100%). Intimal flap and lumen narrowing was best defined with 3D-TOF-MRA in 86% resp. 96% and 3D-PC-MRA in 69% resp. 97%. 3D-PC-MRA was superior to all other sequences in 5 cases of aneurysmal dissection (100%). CONCLUSIONS An accurate evaluation of craniocervical arterial dissections should rely on a combined protocol including T1w spin echo with fat saturation and an axial 3D-MR angiography (if possible 3D-phase contrast MRA).
- Subjects :
- medicine.medical_specialty
medicine.diagnostic_test
Arterial dissection
business.industry
Vertebral artery
Mr angiography
Lumen (anatomy)
Dissection (medical)
medicine.disease
Fat saturation
medicine.artery
Angiography
Spin echo
Medicine
Radiology, Nuclear Medicine and imaging
Radiology
business
Subjects
Details
- ISSN :
- 14389010 and 14389029
- Volume :
- 167
- Database :
- OpenAIRE
- Journal :
- RöFo - Fortschritte auf dem Gebiet der Röntgenstrahlen und der bildgebenden Verfahren
- Accession number :
- edsair.doi...........ef846e29d2e30705606d5cb3ce5014ff