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Radiologe. 1999 Oct;39(10):860-5.

[Diagnosis of acute subarachnoid hemorrhage at 1.5 Tesla using proton-density weighted FSE and MRI sequences].

[Article in German]

Author information

  • 1Abteilung für Neuroradiologie, Klinik Grosshadern der LMU München.

Abstract

PURPOSE:

To evaluate MR imaging at 1.5 Tesla in patients suffering from acute subarachnoid hemorrhage (SAH) using proton-density weighted (PDW) fast spin echo (FSE) and fluid attenuated inversion recovery (FLAIR) sequences.

METHODS:

19 patients suffering from acute SAH as diagnosed by CT were studied 6 h to 3 days after hemorrhage. 10 patients without SAH were studied as a control group. The presence of subarachnoid blood as well as possible artifacts was recorded.

RESULTS:

In all 19 patients subarachnoid hemorrhage was detected on both FLAIR and PDW images (100%). On the FLAIR images, the cerebral ventricles were partially obscured by flow artifacts in 7 of 19 patients, the basal cisterns in 6 of 19 patients. In 4 of these 13 regions blood was diagnosed on both PDW and CT images, while in the other 9 regions both PDW and CT were unremarkable.

CONCLUSION:

The sensitivity of MRI at 1.5 Tesla in the diagnosis of subarachnoid hemorrhage is comparable to CT. The combination of FLAIR and PDW FSE sequences helps to avoid false-positive results caused by flow artifacts.

PMID:
10550385
[PubMed - indexed for MEDLINE]
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