PURPOSE To evaluate the correlation between trochlear dysplasia and the notch index. METHODS Magnetic resonance images (MRI) of 95 knees in 54 male and 36 female patients aged 4 to 74 (mean, 28) years were reviewed by 2 musculoskeletal radiologists. Standard MRI sequences were used. Based on the Dejour classification of trochlear dysplasia, the knees were classified into normal or types A, B,...

BACKGROUND Conventional magnetic resonance imaging (MRI) is the preferred neuroimaging method in the evaluation of neuropsychiatric systemic lupus erythematosus (NPSLE). The purpose of this study was to investigate the association between clinical and immunological features with MRI abnormalities in female patients with NPSLE, to screen for the value of conventional MRI in NPSLE. METHODS A to...

AIM The purpose of the current study was to conduct a systematic review of the published literature to evaluate the diagnostic accuracy of FDG-PET, PTE/CT, MRI and scintigraphy for multiple myeloma related bone disease. METHODS Through a search of PubMed, EMBASE, and the Cochrane Library, two reviewers independently assessed the methodological quality of each study. We estimated pooled sensit...

Background and Purpose—In acute stroke, mismatch between lesions seen on diffusion(DWI) and perfusion-weighted (PWI) MRI has been used to identify ischemic tissue before irreversible damage. Nevertheless, the concept of PWI/DWI mismatch is oversimplified and the ischemic tissue metabolic status and outcome are often heterogeneous. Tissue pH, a well-regulated physiological index that alters on d...

Vertigo can be a major presentation of posterior circulation stroke and can be easily misdiagnosed because of its complicated presentation. We thus prospectively assessed the predictive value of vertebral artery extracranial color-coded duplex sonography (ECCS) for the prediction of ischemic stroke-related vertigo. The inclusion criteria were: (1) a sensation of whirling (vertigo); (2) intracta...

A multilevel compression method, for magnetic resonance imaging (MRI) images, is presented in this paper. First, the image segmented into frames of equal size. Then, sparsity each frame computed. Based on index value, compressive sensing (CS) compressed/reconstructed at one level four. Particle swarm optimization (PSO) used to optimize amount information be CS reconstruction process, and thresh...

IMPORTANCE This study shows factors affecting lingual tonsil hypertrophy (LTH) in sleep-disordered breathing. OBJECTIVE To identify the factors associated with LTH in adults with sleep-disordered breathing. DESIGN Retrospective analysis. SETTING Academic tertiary referral center. PARTICIPANTS Ninety-seven adult patients with obstructive sleep apnea, who visited the Department of Otorhin...

Dissertation for the degree of Doctor of Science in Technology to be presented with due permission for public examination and debate in Auditorium S4 at Helsinki University of Technology (Espoo, Finland) on the 7th of July 2003 at 12 o'clock noon.