The role of contrast-enhanced MR angiography in the assessment of recently ruptured intracranial aneurysms: a comparative study
- 110 Downloads
We evaluated contrast-enhanced MR angiography (MRA) for the identification of recently ruptured cerebral aneurysms. We studied 23 aneurysms in 18 patients (age range 34–72 years) with aneurysms of the anterior (n=17) and posterior (n=6) circulation by comparing 3D time-of-flight (TOF), contrast-enhanced MRA and digital subtraction angiography (DSA). In four of 23 aneurysms, 3D-TOF did not show the lesion. Contrast-enhanced MRA successfully depicted all aneurysms except one. T1 contamination artefacts from subarachnoid or intraparenchymal haemorrhages were evident on the 3D-TOF images in six cases. The artefacts were completely eliminated on the contrast-enhanced MRA images by subtraction of the pre-contrast images. The diagnostic information in patients with subarachnoid haemorrhages (SAHs) provided by contrast-enhanced MRA was comparable to that provided by DSA.
KeywordsSubarachnoid haemorrhage Ruptured aneurysm Intracranial Contrast-enhanced magnetic resonance angiography Time-of-flight magnetic resonance angiography Digital subtraction angiography
- 33.Isoda H, Takehara Y, Isogai S, et al (2000) Software-triggered contrast-enhanced three-dimensional MR angiography of the intracranial arteries. AJR Am J Roentgenol 174:371–375Google Scholar