Dynamics in cortical activity revealed by resting-state MEG rhythms.

The brain is a biophysical system subject to information flows that may be thought of as a many-body architecture with a spatiotemporal dynamics described by its neuronal structures. The oscillatory nature of brain activity allows these structures (nodes) to be described as a set of coupled oscillators forming a network where the node dynamics and that of the network topology can be studied. Quantifying its dynamics at various scales is an issue that claims to be explored for several brain activities, e.

Reliability of ultrasound grading traditional score and new global OMERACT-EULAR score system (GLOESS): results from an inter- and intra-reading exercise by rheumatologists.

This study aims to test the reliability of ultrasound to graduate synovitis in static and video images, evaluating separately grayscale and power Doppler (PD), and combined. Thirteen trained rheumatologist ultrasonographers participated in two separate rounds reading 42 images, 15 static and 27 videos, of the 7-joint count [wrist, 2nd and 3rd metacarpophalangeal (MCP), 2nd and 3rd interphalangeal (IPP), 2nd and 5th metatarsophalangeal (MTP) joints]. The images were from six patients with rheumatoid arthritis, performed by one ultrasonographer.

Snapping biceps femoris tendon: a dynamic real-time sonographic evaluation.

Snapping of the distal arms of the biceps femoris tendon may explain pain and discomfort at the lateral aspect of the knee. We report two cases in which dynamic sonography was able to confirm the diagnosis and document which of the main arms was involved in the process.

Hypervascular synovitis and American College of Rheumatology Classification Criteria as predictors of radiographic damage in early rheumatoid arthritis.

Unlabelled: To investigate if serial clinical and ultrasound evaluations differ between early rheumatoid arthritis patients who do or do not develop erosive disease and to identify predictors of erosions.

Methods: Patients with at least 7 consecutive 2-monthly clinical and 3 consecutive 6-monthly ultrasound evaluations were included. Ultrasound (gray scale and power Doppler) assessed synovitis, power Doppler-positive synovitis (PD+) and power Doppler-negative synovitis (PD-) in each of 14 joints of the dominant hand.