PubMed Health⌕ Search
Home/Archive/PubMed

PubMed · 1528457

Dynamic digitized cerebral parenchymography.

J Théron·M Nelson·F Alachkar·D Mazia
View original source ↗Export metadata ↓

Abstract

Aortic arch injections centred on the head have been performed routinely in patients with cerebral ischaemia. Digital angiograms with modified windowing (low and narrow) have been used. This "cerebral" arch injection allows much improved analysis of the cerebral parenchymal vascularization, giving better understanding of hemispheric ischaemia and making the decision about revascularization more rational.

Explore related subjects

Angiography, Digital SubtractionBrain IschemiaCerebral AngiographyHumansIntracranial Embolism and ThrombosisIoxaglic AcidRadiographic Image Interpretation, Computer-AssistedJournal Article

Keep this discovery

Explore connections, maps & timelines

BibTeXRIS

J Théron, M Nelson, F Alachkar, D Mazia. 1992. Dynamic digitized cerebral parenchymography.. https://doi.org/10.1007/bf00588206

Cite the original work for its findings. Save a collection to share your selection of sources.

KEEP EXPLORING

Related citations

PubMed2007

Patient dose from 3D rotational neurovascular studies.

The use of image-guided interventional radiological techniques is increasing in prevalence and complexity. Imaging system developments have helped improve the information available to interventionalists to plan and guide procedures. Information on doses to patients resulting from alternative imaging techniques or protocols is useful for both the process of justifying particular procedures and in optimizing the resultant exposures. Such information is not always available, especially for new or developing imaging techniques. We have undertaken a study of doses to patients associated with two alternative imaging methods for pre-intervention assessment of intracranial aneurysms. In the first technique the aneurysm is assessed from a series of digital subtraction angiography (DSA) runs taken at different imaging projections. The second technique involved acquiring images from one single image run while the imaging system rotated 180 degrees around the patient's head. In this technique, the aneurysm was then evaluated from a 3D reconstruction of the projection images. Effective doses were calculated using a computer model to simulate the exposure geometry and parameters. The mean dose from the DSA protocol used at our centre was 3.4 mSv and from the 3D rotational angiography (RA) technique was 0.20 mSv.

Angiography, Digital Subtraction↗
PubMed2007

Treatment of an Angio-Seal-related vascular complication using the SilverHawk plaque excision system: a case report.

The Angio-Seal is a user-friendly and safe arterial closure device increasingly used after percutaneous diagnostic and interventional procedures. Although it achieves rapid hemostasis and facilitates early patient mobilization, its use can be associated with vascular complications. A specific problem related to the device is protrusion of the collagen plug into the artery, causing either acute occlusion or symptomatic stenosis. When this occurs, treatment with balloon angioplasty alone is usually suboptimal, while stenting of the common femoral artery may be undesirable. In this report we describe a novel application of the SiverHawk plaque excision system to treat a highly eccentric stenosis at the site of a previously deployed Angio-Seal. Since the device allows preferential cutting in the direction of the lesion and collagen plug debulking, it may be ideally suited to treat this complication without the need for stenting of the common femoral artery.

Angiography, Digital Subtraction↗
PubMed2007

Carotid artery fibromuscular dysplasia.

Extracranial carotid artery fibromuscular dysplasia (FMD) is a rare finding that is frequently incidental and asymptomatic. It usually occurs in middle-age women and is secondary to medial fibrodysplasia or, less commonly, intimal fibrodysplasia. The carotid artery may be elongated or kinked and associated aneurysms have been reported. Symptoms including transient ischemic attack or stroke are uncommon and are due to low flow or embolization of platelet aggregates. Digital subtraction angiography demonstrates high-grade stenosis with the characteristic "string of beads" pattern. Antiplatelet medication with sequential imaging is the accepted therapy for asymptomatic lesions. Graduated endoluminal dilation under direct vision should be reserved for patients with documented lateralizing symptoms.

Angiography, Digital Subtraction↗