Intravenous thrombolysis for patients with reverse magnetic resonance angiography and diffusion-weighted imaging mismatch: SAMURAI and NCVC rt-PA Registries

Abstract OBJECTIVE AND IMPORTANCE: To use intraoperative magnetic resonance imaging, including magnetic resonance angiography and diffusion-weighted imaging, to monitor the surgical treatment of a patient with an intracranial aneurysm. TECHNIQUE: Intraoperative imaging was performed with a ceiling-mounted, mobile, 1.5-T magnet (developed in collaboration with Innovative Magnetic Resonance Imaging Systems, Inc., Winnipeg, MB, Canada) that included high-performance 20-mT/m gradients. Pre- and postclipping, intraoperative, T1-weighted, angiographic and diffusion-weighted magnetic resonance images were obtained from a patient with an incidental, 8-mm, anterior communicating artery aneurysm. RESULTS: T1-weighted images demonstrated brain anatomic features, with visible shifts induced by surgery. Magnetic resonance angiography demonstrated the aneurysm and indicated that, after clipping, the A1 and A2 anterior cerebral artery branches were patent. Diffusion-weighted studies demonstrated no evidence of brain ischemia. CONCLUSION: For the first time, intraoperative magnetic resonance imaging has been used to monitor the surgical treatment of a patient with an intracranial aneurysm.

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The combination of baseline magnetic resonance perfusion-weighted imaging-derived tissue volume with severely prolonged arterial-tissue delay and diffusion-weighted imaging lesion volume is predictive of MCA-M1 recanalization in patients treated with endovascular thrombectomy

Neuroradiology ◽

10.1007/s00234-013-1310-2 ◽

2013 ◽

Vol 56 (2) ◽

pp. 117-127 ◽

Cited By ~ 6

Author(s):

F. Nicoli ◽

◽

F. Scalzo ◽

J. L. Saver ◽

F. Pautot ◽

...

Keyword(s):

Magnetic Resonance ◽

Diffusion Weighted Imaging ◽

Lesion Volume ◽

Endovascular Thrombectomy ◽

Magnetic Resonance Perfusion ◽

Tissue Volume ◽

Perfusion Weighted Imaging ◽

Diffusion Weighted ◽

Arterial Tissue ◽

And Diffusion

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Magnetic resonance, magnetisation transfer, and diffusion weighted imaging correlates of optic nerve, brain, and cervical cord damage in Leber's hereditary optic neuropathy

Journal of Neurology Neurosurgery & Psychiatry ◽

10.1136/jnnp.70.4.431 ◽

2001 ◽

Vol 70 (4) ◽

pp. 431-431

Author(s):

C LIU

Keyword(s):

Optic Nerve ◽

Magnetic Resonance ◽

Optic Neuropathy ◽

Diffusion Weighted Imaging ◽

Cervical Cord ◽

Magnetisation Transfer ◽

Leber's Hereditary Optic Neuropathy ◽

Diffusion Weighted ◽

And Diffusion ◽

Hereditary Optic Neuropathy

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The role of magnetic resonance cholangiopancreatography and diffusion-weighted imaging for the differential diagnosis of obstructive biliary disorders

South African Journal of Radiology ◽

10.4102/sajr.v21i1.1193 ◽

2017 ◽

Vol 21 (1) ◽

Author(s):

Zeynep Cetiner-Alpay ◽

Fatma Kulali ◽

Aslihan Semiz-Oysu ◽

Yasar Bukte ◽

Kamil Ozdil

Keyword(s):

Magnetic Resonance ◽

Sensitivity And Specificity ◽

Gold Standard ◽

Diffusion Weighted Imaging ◽

Magnetic Resonance Cholangiopancreatography ◽

Malignant Tumours ◽

Diagnostic Efficacy ◽

Diffusion Weighted ◽

Sensitivity Specificity ◽

And Diffusion

Background: Although endoscopic retrograde cholangiopancreatography (ERCP) is accepted as the gold standard, there is a place for magnetic resonance cholangiopancreatography (MRCP) and diffusion-weighted imaging (DWI) in the diagnosis of obstructive biliary disorders.Aim: To compare the findings of MRCP with ERCP in patients with obstructive biliary disorders and to investigate the diagnostic efficacy of MRCP combined with DWI.Study design: Retrospective, analytic, cross-sectional study.Methods: The MRCP images of 126 patients who underwent both MRCP and ERCP owing to biliary obstruction were reviewed. Nine patients were excluded because of incomplete diagnostic workup or a long period (>3 months) between MRCP and ERCP. Ninety-two patients underwent DWI, which was also evaluated. The sensitivity, specificity and accuracy of MRCP and DWI were analysed.Results: The sensitivity, specificity and accuracy of MRCP according to ERCP results as the gold standard was 97%, 71% and 93% for assessment of biliary dilatation; 100%, 94.7% and 97.5% for the diagnosis of choledocholithiasis; 93.7%, 100% and 99% for the identification of benign strictures; 100%, 100% and 100% for the diagnosis of malignant tumours; and 100%, 100% and 100% for the detection of complicated hydatid cysts; respectively. The sensitivity and specificity of DWI for the diagnosis of malignant tumour was 100%. In the detection of choledocholithiasis, the sensitivity and specificity of DWI was 70.8% and 100%.Conclusions: MRCP is an alternative, non-invasive, diagnostic modality, comparable with ERCP for the evaluation of pancreaticobiliary diseases. DWI can be helpful for diagnosis of choledocholithiasis and tumours.

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