Related Experiment Video

Updated: Jan 31, 2026

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test
10:21

Evaluation of Hydration Status by Bioelectrical Impedance Vector Analysis in Patients with Ischemic Heart Disease Undergoing Exercise Stress Test

Published on: September 22, 2023

1.0K

Imaging of Moyamoya Disease and Moyamoya Syndrome: Current Status

Jincheng Li, Meiyu Jin1, Xiaoyan Sun

  • 1Jilin People's Hospital, Changchun, Jilin.

Journal of Computer Assisted Tomography
|December 28, 2018
PubMed

Insights

Moyamoya disease (MMD) and Moyamoya syndrome (MMS) involve progressive artery narrowing in the brain. Early diagnosis using various imaging techniques is crucial for better patient outcomes and guiding treatment decisions.

Area of Science:

  • Neurology
  • Radiology
  • Vascular Medicine

Background:

  • Moyamoya disease (MMD) and Moyamoya syndrome (MMS) are characterized by progressive steno-occlusive vasculopathy affecting major cerebral arteries.
  • This condition leads to irreversible cerebral hemodynamic damage due to its progressive nature.

Purpose of the Study:

  • To review diagnostic and quantitative imaging modalities for Moyamoya disease and Moyamoya syndrome.
  • To highlight the importance of prompt diagnosis and accurate assessment for improving patient prognosis.

Main Methods:

  • Conventional imaging: CT, MRI, digital subtraction angiography, CTA, MRA for diagnosis and nonquantitative evaluation.
  • Quantitative imaging: SPECT, PET, Xenon-enhanced CT, perfusion CT, DSC-MRI, ASL-MRI for hemodynamic assessment.

Main Results:

  • Various imaging modalities offer different capabilities for diagnosing and evaluating MMD and MMS.
  • Quantitative imaging provides hemodynamic parameters that can guide treatment strategies.

Conclusions:

  • Accurate assessment of MMD and MMS using imaging is vital for prognosis.
  • Standardized protocols for preoperative and postoperative evaluation with different imaging techniques are needed for future research.

More Related Videos

Comparing Objective Conjunctival Hyperemia Grading and the Ocular Surface Disease Index Score in Dry Eye Syndrome During COVID-1906:29

Comparing Objective Conjunctival Hyperemia Grading and the Ocular Surface Disease Index Score in Dry Eye Syndrome During COVID-19

Published on: May 25, 2022

2.8K
Conscious and Non-conscious Representations of Emotional Faces in Asperger's Syndrome08:31

Conscious and Non-conscious Representations of Emotional Faces in Asperger's Syndrome

Published on: July 31, 2016

14.5K

Related Concept Videos

Marcia's Theory of Identity Status01:26

Marcia's Theory of Identity Status

James Marcia's identity status model provides a framework for understanding how adolescents navigate identity formation through varying degrees of exploration and commitment. Marcia's model builds on Erik Erikson's theories of psychosocial development, focusing specifically on how adolescents reconcile individual aspirations with societal expectations. His model describes identity formation as a dynamic process where adolescents move between different states depending on their level...
1.6K
Electrical Current01:10

Electrical Current

Electrical current is defined as the rate at which charge flows. When there is a large current present, such as that used to run a refrigerator, a large amount of charge moves through the wire in a small amount of time. If the current is small, such as that used to operate a handheld calculator, a small amount of charge moves through the circuit over a long period of time. The SI unit for current is the ampere (A), named for the French physicist André-Marie Ampère (1775–1836).
7.2K
Nephrotic Syndrome I : Introduction01:24

Nephrotic Syndrome I : Introduction

Nephrotic Syndrome is a chronic kidney disorder defined by clinical findings such as severe proteinuria, hypoalbuminemia, hyperlipidemia, and edema. These symptoms result from damage to the glomeruli, the kidney’s filtering units, increasing their permeability to proteins.Definition and Meaning:Proteinuria, defined as the loss of more than 3.5 grams of protein per day in adults, is a crucial feature of nephrotic syndrome. This condition is often accompanied by edema, the accumulation of...
633
Current Density01:21

Current Density

The total amount of current flowing through one unit value of a cross-sectional area is referred to as current density. If the current flow is uniform, the amount of current flowing through a conductor is the same at all points along the conductor, even if the conductor area varies. The current density consists of the local magnitude and direction of the charge flow, which varies from point to point. Current density is measured in amperes per meter square, and direction is defined as the net...
5.1K
Eddy Currents01:25

Eddy Currents

Since eddy currents occur only in conductors, magnets can separate metals from other materials. For example, in a recycling center, trash is dumped in batches down a ramp, beneath which lies a powerful magnet. Conductors in the trash are slowed by eddy currents, while nonmetals in the trash move on, separating from the metals. This works for all metals, not just ferromagnetic ones.
Other major applications of eddy currents appear in metal detectors and the braking systems of trains and roller...
2.6K
Displacement Current01:19

Displacement Current

Ampère's law, in its usual form, does not work in places where the current changes with time and is not steady. Thus, Maxwell suggested including an additional contribution, called the displacement current, Id, to the real conduction current I.
3.8K