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Spinal Cord Herniation • 10,146 views
This is a case for Prof. Dr. Dillon. It is in press by our neurosurgeons and us, for the use of Duragen. Idiopathic herniation of the thoracic spinal cord: a case report and technique note. U...
Neuro Protocols • 7,715 views
Alisa Gean is doing a great job getting a group together to share and collaborate neuro protocols. This would be a great place from members to share protocols, and open a discussion about the best ima...
Possible SIH with Spinal Subdural Hygroma, What Next? • 6,341 views
[caption id="attachment_602" align="aligncenter" width="407" caption="Sag T1. Tonsils are not particularly low and no sagging of the base of the brain."][/caption] [caption id="attachment_603" alig...
Cervical Spine Nomenclature • 5,060 views
The ASNR/ASSR nomenclature document was specific for the lumbar spine. I would be interested in your opinion on the correct terminology for cervical spondylosis: what terms and why. Specifically, t...
Brachial Plexus MRI Protocol • 4,646 views
BP MRI Protocol Fall is upon us and so is the lecturing season! Like years before, this Fall I will be giving my brachial plexus lecture several times and the most commonly asked question by the au...
Intracranial Hypotension: Advice on Best Treatment • 4,485 views
Middle age female patient diagnosed with Spontaneous intracranial hypotension. Has multiple (approx 23) perineural cysts. Has undergone several blood patches and artificial CSF infusions without rel...
Embolization of Brain Arteriovenous Malformations for Cure • 4,180 views
The editorial comment in the AJNR of Jan 09 by Jayaraman and Cloft is worthy of careful scrutiny, I believe. Although in my personal experience with Onyx and NBCA, final cure rates of brain AVMs from ...
Aunt Mickey (They Look the Same until You Undress Them). Internal Capsule Infarct or Something Else? • 3,892 views
This 30 year old hypertensive female smoker presented with acute onset of right hemiparesis. Her history also included OCP use and dyslipidemia. MRI demonstrated an acute infarct in the posterior limb...
Liver Hemangiomas and Vascular Lesions of the Brain • 3,871 views
[gallery] I have a patient with 15 large liver hemangiomas and two partly calcified lesions in brain. Does anyone know of associated liver hemangiomas and vascular lesions in the brain?
More on DWI of Head and Neck Lesions • 3,870 views
Yesterday I wrote a short comment in the utility of DWI in the evaluation of head and neck lesions. While reading cases in the afternoon I came across a new patient with a retinoblastoma. This pa...
Tag Archives: DWI
Educational Presentation: DWI of Brain Abscesses
We are back from RSNA and it is time to post a new educational activity in our blog. This presentation, by one of our previous neuroradiology fellows, addresses the typical and atypical findings and utility of DWI in the evaluation of brain abscesses.… Continue reading >>
Aunt Mickey (They Look the Same until You Undress Them). Lhermitte-Duclos or Something Else?
A young man presented with ataxia. Brain contrast enhanced MRI was done including DWI and perfusion. T2WI showed a mixed intensity lesion in the inferior right cerebellar hemisphere which contained some “dark stripes”. DWI ADC map show restricted diffusion centrally. After contrast the lesion enhanced in a striped fashion and perfusion showed low rCBV (see below). Llermitte-Duclos disease was considered in the differential diagnosis.
Further questioning of patient disclosed that the symptoms had had a sudden onset 7 days earlier. The diagnosis of subacute infarction of the right posterior inferior cerebellar artery territory was considered as the most likely cause … Continue reading >>
ADC Question
I will like to know if someone can help me with some doubts I have regarding ADCs.
1. I have a sample with some ADC values obtained in 1,5 T and others obtained in 3T ( same b value). Can I use the ADC values for statistics or do you think that they cannot be compared?
2. Are the ADC values obtained using a diffusion sequence the same that the ADC values obtained in a DTI sequence with 12 directions?
Thank you in advance.… Continue reading >>
RE: DWI for Head and Neck Lesions – Acute Ischemic Optic Neuropathy
Here’s another case for the value of DWI for head and neck lesions.
This patient had left central retinal artery occlusion and acute ischemic optic neuropathy. There is restricted diffusion in the anterior left optic nerve which is much more obvious than the mild perineural enhancement on coronal postcontrast images.