Related Experiment Video
Updated: Feb 11, 2026

Comet Assay as an Indirect Measure of Systemic Oxidative Stress
Published on: May 22, 2015
Noninvasive Assessment of Hemodynamic Stress Distribution after Indirect Revascularization for Pediatric Moyamoya
D Tortora1, M Severino2, M Pacetti3
1From the Neuroradiology (D.T., M.S., G.M., A.R.).
Background And Purpose:
Indirect revascularization surgery is an effective treatment in children with Moyamoya vasculopathy. In the present study, we hypothesized that DSC-PWI may reliably assess the evolution of CBF-related parameters after revascularization surgery, monitoring the outcome of surgical pediatric patients with Moyamoya vasculopathy. Thus, we aimed to evaluate differences in DSC-PWI parameters, including the hemodynamic stress distribution, in surgical and nonsurgical children with Moyamoya vasculopathy and to correlate them with long-term postoperative outcome.
Materials And Methods:
Pre- and postoperative DSC parameters of 28 patients (16 females; mean age, 5.5 ± 4.8 years) treated with indirect revascularization were compared with those obtained at 2 time points in 10 nonsurgical patients (6 females; mean age, 6.9 ± 4.7 years). We calculated 4 normalized CBF-related parameters and their percentage variance: mean normalized CBF of the MCA territory, mean normalized CBF of the proximal MCA territory, mean normalized CBF of cortical the MCA territory, and hemodynamic stress distribution. The relationship between perfusion parameters and postoperative outcomes (poor, fair, good, excellent) was explored using 1-way analysis of covariance (P < .05).
Results:
A significant decrease of the mean normalized CBF of the proximal MCA territory and hemodynamic stress distribution and an increase of the mean normalized CBF of the cortical MCA territory were observed after revascularization surgery (P < .001). No variations were observed in nonsurgical children. Postoperative hemodynamic stress distribution and its percentage change were significantly different in outcome groups (P < .001).
Conclusions:
DSC-PWI indices show postoperative hemodynamic changes that correlate with clinical outcome after revascularization surgery in children with Moyamoya disease.
More Related Videos
05:49Modeling the Effects of Hemodynamic Stress on Circulating Tumor Cells using a Syringe and Needle
Published on: April 27, 2021
07:39Co-culture of Glutamatergic Neurons and Pediatric High-Grade Glioma Cells Into Microfluidic Devices to Assess Electrical Interactions
Published on: November 17, 2021
Related Concept Videos
Pharmacokinetics in Pediatric Patients: Drug Distribution
Distribution of Stresses in a Narrow Rectangular Beam
Indirect Motor Pathways
The vestibulospinal tract originates in the vestibular nuclei of the brainstem. The vestibular system detects changes in...
EDTA: Indirect and Alkalimetric Titration
Drug Distribution: Volume of Distribution
Pharmacokinetics in Pediatric Patients: Drug Excretion