Incidence of intracranial arterial dissection in non-emergency outpatients complaining of headache: preliminary investigation with MRI/MRA examinations.

Purpose: Headache is recognized as one of the specific signs of intracranial arterial dissection (ICrAD). We clarified the incidence of ICrAD in non-emergency outpatients complaining of headache and the nature of headache observed in case of ICrAD.

Patient Population And Methods: Consecutive non-emergency outpatients coming to the neurological and neurosurgical departments and who underwent MRI and MRA examinations were included in this study.

[Case of symptomatic subacute in-stent thrombosis after carotid angioplasty and stenting for severe carotid stenosis].

We report a case of symptomatic subacute in-stent thrombosis after carotid artery angioplasty and stenting (CAS). The patient was a 72-year-old man who had severe asymptomatic right carotid artery stenosis. He received CAS with distal protection, and gained 100% opening of the right carotid artery.

[Basal interhemispheric approach for distal anterior cerebral aneurysms].

Purpose: To investigate retrospectively the usefulness of basal interhemispheric approach for neck clipping of aneurysms located on genu or infracallosal portion of anterior cerebral artery.

Clinical Materials And Methods: Seventeen aneurysms in 17 patietns treated by clipping with basal inter-hemispheric approach in our department for past 8 years were reviewed. Of them, 12 were ruptured aneurysm and 5 were unruptured one.

Extravasation from rupturing aneurysm demonstrated by 3D digital subtraction angiography.

We describe the 3D digital subtraction angiography (3D-DSA) image of extravasation from a rupturing aneurysm. This image clearly showed that the extravasation was coming from a pseudoaneurysm on an aneurysmal wall. To the best of our knowledge, this is the first demonstration of a 3D-DSA image of a rupturing aneurysm.

[Surgical treatment for dissecting aneurysm of the anterior cerebral artery presenting only with headache: a case report].

The authors reported the first case of a dissecting aneurysm of the anterior cerebral artery (ACA) presenting only with headache successfully treated by trapping. A 23-year-old man was admitted to our department due to headache. CT scan and MRI showed neither hemorrhage nor infarction.

[Basi-parallel anatomical scanning (BPAS) MRI: a simple MRI technique for demonstrating the surface appearance of the intracranial vertebrobasilar artery].

We modified surface anatomy scanning (SAS) MRI to reveal the surface appearance of the vertebrobasilar artery in the cistern. Two-cm-thick heavily T2-weighted coronal imaging using the fast spin-echo sequence with gray-scale reversal in post-processing was best for our purposes. Basi-parallel anatomical scanning (BPAS) MRI could clearly demonstrate fusiform aneurysm and its disappearance at the acutely occluded segment of the dissected vertebral artery.

Subarachnoid hemorrhage caused by a dissecting aneurysm of the internal carotid artery.

Object: Subarachnoid hemorrhage (SAH) caused by the rupture of a dissecting aneurysm of the internal carotid artery (ICA) has been considered rare. Based on data from cooperatively collected cases, the clinical features of patients with dissecting aneurysms of the ICA who presented with SAH were examined.

Methods: Data from 18 patients with dissecting aneurysms of the ICA who presented with SAH diagnosed on the basis of clinical signs, neuroradiological findings, and intraoperative findings from 41 institutions were collected during a 5-year period between 1995 and 1999.