Blood Flow Velocity Analysis in Cerebral Perforating Arteries on 7T 2D Phase Contrast MRI with an Open-Source Software Tool (SELMA).

Blood flow velocity in the cerebral perforating arteries can be quantified in a two-dimensional plane with phase contrast magnetic imaging (2D PC-MRI). The velocity pulsatility index (PI) can inform on the stiffness of these perforating arteries, which is related to several cerebrovascular diseases. Currently, there is no open-source analysis tool for 2D PC-MRI data from these small vessels, impeding the usage of these measurements.

Interictal burden in migraine patients at the outset of CGRP monoclonal antibody prevention.

Background: The total burden of migraine includes not only the episodes with headache pain but extends throughout the interictal periods. Interictal symptoms and associated psychological responses may profoundly impact well-being and drive treatment-seeking behavior.

Methods: A cross-sectional online survey was conducted with participants aged ≥ 18 years, 250 with episodic migraine (EM) and 250 with chronic migraine (CM), having ≥ 4 monthly migraine headache days.

Acclimation and size influence predation, growth, and survival of sexually produced Diploria labyrinthiformis used in restoration.

Stony coral tissue loss disease (SCTLD) has swept through Florida reefs and caused mass mortality of numerous coral species. In the wake of these losses, efforts are underway to propagate coral species impacted by SCTLD and promote population recovery. However, numerous knowledge gaps must be addressed to effectively grow, outplant, and restore populations of the slower growing, massive species that were lost.

Psychometric Properties and Meaningful Change Thresholds of the Vitiligo Area Scoring Index.

Importance: Defining meaningful improvement using the Total Vitiligo Area Scoring Index (T-VASI) and the Facial VASI (F-VASI) aids interpretation of findings from clinical trials evaluating vitiligo treatments; however, clear and clinically meaningful thresholds have not yet been established.

Objective: To assess concept validity and measurement performance of the T-VASI and F-VASI in patients with nonsegmental vitiligo and to identify meaningful change thresholds.

Design, Settings, And Participants: This mixed-methods study consisted of a secondary analysis of a phase 2 multicenter double-blind dose-ranging randomized clinical trial and embedded qualitative interviews conducted at 35 sites in Canada, France, Japan, and the US.

Local and whole-body SAR in UHF body imaging: Implications for SAR matrix compression.

Purpose: Transmit arrays for body imaging have characteristics of both volume and local transmit coils. This study evaluates two specific absorption rate (SAR) aspects, local and whole-body SAR, of arrays for body imaging at 7 T and also for a 3 T birdcage.

Methods: Simulations were performed for six antenna arrays at 7 T and one 3 T birdcage.