相关实验视频

Updated: May 9, 2025

How to Quantify the Fraction of Photoactivated Fluorescent Proteins in Bulk and in Live Cells
11:03

How to Quantify the Fraction of Photoactivated Fluorescent Proteins in Bulk and in Live Cells

Published on: January 7, 2019

6.6K

量化129XeMRI通风缺陷百分比使用二进制值,高斯线性结合和K-means方法:喘和COPD的差异

Eveline Durom1, Chanwoo Yang2, Ali Mozaffaripour1

  • 1Robarts Research Institute, Western University, London, Canada (E.D., C.Y., A.M., A.M.M., G.P.); School of Biomedical Engineering, Western University, London, Canada (E.D., A.M., G.P.).

Academic radiology
|May 6, 2025
PubMed
概括

在喘和COPD患者中量化通风缺陷百分比 (VDP) 的不同方法产生显著不同的结果. 这些差异凸显了在使用高极化129XeMRI的多中心研究中需要仔细考虑的需要.

关键词:
(129) Xe 核磁共振成像这就是为什么MRI是MRI.肺部成像扫描 肺部成像扫描通风缺陷的百分比是多少

更多相关视频

Author Spotlight: Enhanced Quantification of Cardiovascular Calcification Progression for Longitudinal Micro PET/CT Studies in Small Research Animals08:02

Author Spotlight: Enhanced Quantification of Cardiovascular Calcification Progression for Longitudinal Micro PET/CT Studies in Small Research Animals

Published on: November 15, 2024

452
Quantitative Immunofluorescence to Measure Global Localized Translation09:13

Quantitative Immunofluorescence to Measure Global Localized Translation

Published on: August 22, 2017

9.8K

相关概念视频

Quantitative Analysis01:12

Quantitative Analysis

Quantitative analysis is a technique for measuring the amount of specific constituents in a sample. When the sample's composition is unknown, qualitative analysis is performed first to identify its components, which ensures that the correct substances are measured during the quantitative phase.
In quantitative analysis, two key measurements are made: the sample quantity and a property proportional to the amount of the analyte (the substance being analyzed). This forms the basis of the...
220
Numerical Calculations01:24

Numerical Calculations

In engineering applications, the representation of the numerical value is critical. Presenting or reporting the answer is one of the essential parts of engineering practices. Numerical calculations are performed using handheld calculators or computers since numerically accurate answers are always preferred.
The solution to a problem is obtained using different methods. While manually solving algebraic symbols is one of the most common methods, the graphical method is often preferred. Computers...
301
Units and Standards of Measurement01:10

Units and Standards of Measurement

A physical quantity is defined either by specifying its measurement method or by stating how it is calculated from other measurements. For example, consider a metallic cube. We might define its mass and dimensions by specifying methods for measuring them, such as using a weighing machine and a meter scale. Then, we could define the volume by stating that it is the cube of its side, and we could calculate the density as the mass divided by the volume.
Measurements of physical quantities are...
30.6K
Dimensional Analysis03:40

Dimensional Analysis

Dimensional analysis, also known as the factor label method, is a versatile approach for mathematical operations. The main principle behind this approach is: the units of quantities must be subjected to the same mathematical operations as their associated numbers. This method can be applied to computations ranging from simple unit conversions to more complex and multi-step calculations involving several different quantities and their units.
Conversion Factors and Dimensional Analysis
The unit...
44.1K
How Data are Classified: Numerical Data00:59

How Data are Classified: Numerical Data

Data that are countable or measurable in specific units are called numerical or quantitative data. Quantitative data are always numbers. Quantitative data are the result of counting or measuring the attributes of a population. Amount of money, pulse rate, weight, number of people living in a town, and number of students who opt for statistics are examples of quantitative data.
Quantitative data may be either discrete or continuous. All quantitative data that take on only specific numerical...
27.0K
SI Units: 2019 Redefinition01:13

SI Units: 2019 Redefinition

Measurement is an indispensable part of analytical chemistry. The result of measurement helps quantify a substance's physical property and compare it with the physical property of another substance. Each measurement comprises two components - a number indicating the magnitude and a unit of measurement as a standard for comparison. Further, the same quantity can be measured using different units of measurement, which leads to differences in magnitude.
A standard set of units has been defined...
1.2K