相关实验视频

Updated: Jul 9, 2025

Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging

Tracking the Mammary Architectural Features and Detecting Breast Cancer with Magnetic Resonance Diffusion Tensor Imaging

Published on: December 15, 2014

旋回回声平面成像和梯度回忆回声序的比较在1.5T的肝脏磁共振弹性图像相同的MRI扫描仪

Ryouna Abe¹, Kei Fukuzawa², Chiharu Yoshihara²

¹Department of Radiological Technology, Toranomon Hospital, 2-2-2 Toranomon, Minato-ku, Tokyo, Japan. ryohna.abe@gmail.com.

Abdominal radiology (New York)

|November 27, 2023

概括

磁共振弹性成像 (MRE) 将梯度回忆回声 (GRE) 和旋回声平面成像 (SE-EPI) 进行肝硬度 (LS) 的比较. SE-EPI更可靠,特别是在高R2*值的情况下,GRE可能会失败.

科学领域:

医疗成像医学成像
肝病学肝病学是一种肝病学.
生物物理学的生物物理.

背景情况:

磁共振弹性图 (MRE) 是一种评估肝硬度 (LS) 的非侵入性技术.
两个主要的MRE序列,渐变回忆回声 (GRE) 和旋回声平面成像 (SE-EPI),用于LS测量.
了解这些序列的比较性能对于准确的肝病评估至关重要.

研究的目的:

为了比较使用基于梯度回忆回声 (GRE) 和基于旋回声平面成像 (SE-EPI) 的序列在1.5-T磁共振成像 (MRI) 中获得的肝硬度 (LS) 值.
评估两个MRE序列的LS测量之间的一致性和相关性.
为了确定肝脏MRE每个序列的潜在限制.

主要方法:

从1.5TMRI扫描仪获得的MRE成像数据的回顾性分析.
从水平肝部切口获取MRE数据.
测量和比较GRE和SE-EPI序列之间的平均肝硬度 (LS) 和像素值.
与质子密度脂肪分数,R2*值和生物化学数据的相关性分析,然后进行多变量分析.

主要成果:

平均LS值显示GRE (3.01 ± 1.78 kPa) 和SE-EPI (3.13 ± 1.57 kPa) 序列之间有很好的一致性 (r = 0.96).
在平均像素值中观察到显著差异 (GRE: 369.5 ± 142.7;SE-EPI: 490.1 ± 197.9;p < 0.01).
在SE-EPI没有不可测量的病例,而GRE有2.5%的不可测量的病例,特别是与高R2*值 (p <0.001) 相关.

结论:

在1.5T肝脏MRE中,GRE和SE-EPI方法对于LS测量是可比的.
SE-EPI MRE被认为更有利,因为它能够在高R2*值的情况下测量LS,并倾向于更大的兴趣区域.
这些发现表明,SE-EPI可能在各种临床场景中提供更好的可靠性和适用性.

关键词:

GRE MRE GRE MRE 在线阅读肝脏的MRI图像可以显示出肝脏的MRI图像.肝脏硬肝脏硬肝脏硬 R2* 是一个R2* 类型.这就是SE-EPI MRE.

更多相关视频

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth

Magnetic Resonance Elastography Methodology for the Evaluation of Tissue Engineered Construct Growth

Published on: February 9, 2012

Author Spotlight: Advancing Hepatic Fibrosis Diagnosis Using Magnetic Resonance Elastography and AI

Author Spotlight: Advancing Hepatic Fibrosis Diagnosis Using Magnetic Resonance Elastography and AI

Published on: July 21, 2023

相关概念视频

Ultrasound II: Endoscopic Ultrasound and FibroScan

Ultrasound II: Endoscopic Ultrasound and FibroScan

Endoscopic Ultrasound (EUS) and FibroScan are valuable diagnostic tools in gastroenterology and hepatology, each with specific applications and techniques.
Endoscopic Ultrasound (EUS):

Magnetic Resonance Imaging

Magnetic Resonance Imaging

Magnetic resonance imaging (MRI) is a noninvasive medical imaging technique based on a phenomenon of nuclear physics discovered in the 1930s, in which matter exposed to magnetic fields and radio waves was found to emit radio signals. In 1970, a physician and researcher named Raymond Damadian noticed that malignant (cancerous) tissue gave off different signals than normal body tissue. He applied for a patent for the first MRI scanning device in clinical use by the early 1980s. The early MRI...

Imaging Studies I: CT and MRI

Imaging Studies I: CT and MRI

Introduction: MRI and CT scans are crucial advancements in medical imaging techniques, playing a vital role in diagnosing conditions related to the gastrointestinal (GI) system. Each scan serves distinct purposes, targets specific areas, and requires unique nursing duties.
Description of the Procedures
Computed Tomography (CT) scan:
Computed Tomography (CT) scans use X-ray technology to generate detailed images of bones, organs, and tissues. During the scan, the patient lies on a moving table...