The purpose of this chapter is to provide a brief introduction to the main research questions to be covered in the report, to summarise the evidence already available and to …more
Objectives-To determine whether combining non-invasive tests for intracranial aneurysms together would significantly improve aneurysm detection over individual tests. Methods-114 patients undergoing intraarterial digital subtraction angiography to confirm or exclude an …more
It is well known that quantitative anisotropy measurements derived from the diffusion tenser are extremely sensitive to noise contamination, The level of noise in the diffusion tenser imaging (DTI) experiment …more
This paper concerns the validation of automatic retinal image analysis (ARIA) algorithms. For reasons of space and consistency, we concentrate on the validation of algorithms processing color fundus camera images, …more
BACKGROUND: Statistical models of normal ageing brain tissue volumes may support earlier diagnosis of increasingly common, yet still fatal, neurodegenerative diseases. For example, the statistically defined distribution of normal ageing …more
BACKGROUND AND PURPOSE: Lacunar infarction is attributable to a perforating arteriolar abnormality. Possible causes include embolism, atheromatosis, or intrinsic disease. We examined whether the size, shape, or location of the …more
Background and Purpose-This study describes the large variations in outcome after stroke between countries that participated in the International Stroke Trial and seeks to define whether they could be explained …more
Hyperoxia or hypercapnia provides a useful experimental tool to systematically alter the blood oxygenation level dependent (BOLD) contrast. Typical applications include calibrated functional magnetic resonance imaging (fMRI), BOLD sensitivity mapping, …more
Introduction Large, symptomatic aneurysms of the cavernous internal carotid artery (ICA) can be successfully treated by a combination of aneurysm coiling and occlusion of the parent vessel. Case presentation We …more
Aims: The initial aims were to use recently available observations of glioblastomas (as part of a previous Study) that had been imaged twice without intervening treatment before receiving radiotherapy in …more