快速心脏磁共振 (CMR) 协议用于双心室功能评估和组织表征
Andrea Baggiano1, Federica Rocca2, Andrea Daniele Annoni1
1Perioperative Cardiology and Cardiovascular Imaging Department, Centro Cardiologico Monzino IRCCS, Milan, Italy.
International journal of cardiology
|January 28, 2026
概括
一种新的深度学习方法显著缩短了心血管磁共振 (CMR) 扫描时间. 这种快速的CMR协议保持了诊断图像的质量和准确性,使其适合常规临床使用.
科学领域:
- 心血管成像 - 心血管成像
- 医学诊断 医学诊断 医学诊断
- 人工智能在医学中的应用
背景情况:
- 心血管磁共振 (CMR) 对于评估心脏功能和心肌组织至关重要.
- 长时间的获取时间限制了传统CMR协议的临床实用性.
- 深度学习重建有可能加速CMR成像.
研究的目的:
- 将基于深度学习的新型快速CMR协议与标准协议进行比较.
- 评估图像质量,功能测量和心肌特征.
- 为了确定对整体扫描持续时间的影响.
主要方法:
- 一项前性研究将标准CMR协议 (ASSET bSSFP cine + 2D单段PSIR LGE) 与快速协议 (Sonic DL bSSFP cine + 2D多段PSIR LGE与AIR Recon DL) 进行比较.
- 包括100名连续患有已知或疑似心肌疾病的患者.
- 评估了图像质量,心室功能和获取时间.
主要成果:
- 深度学习电影成像 (Sonic DL bSSFP) 显示了可比的图像质量 (Likert 4.56 与 4.59) 并保留了心室功能指标.
- 快速电影采集显著减少了长轴和短轴堆叠时间 (38s vs 61s,125s vs 227s).
- 深度学习LGE (2D-MS PSIR LGE) 也保持了诊断质量 (Likert 4.51 vs 4.60),并大幅减少了获取时间 (25s vs 77s,78s vs 302s).
结论:
- 基于深度学习的快速CMR协议显著减少了扫描时间.
- 快速协议不会影响体积精度或诊断图像质量.
- 这种加快的CMR方法是常规临床实践中可行的选择.
相关概念视频
Magnetic Resonance Imaging
9.3K
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...
9.3K
Atomic Nuclei: Magnetic Resonance
1.2K
The number of nuclear spins aligned in the lower energy state is slightly greater than those in the higher energy state. In the presence of an external magnetic field, as the spins precess at the Larmor frequency, the excess population results in a net magnetization oriented along the z axis. When a pulse or a short burst of radio waves at the Larmor frequency is applied along the x axis, the coupling of frequencies causes resonance and flips the nuclear spins of the excess population from the...
1.2K
Nuclear Magnetic Resonance (NMR): Overview
6.9K
Nuclear magnetic resonance (NMR) is a phenomenon exhibited by certain nuclei that can absorb characteristic radio frequency radiation under certain conditions. NMR has been extensively applied in molecular spectroscopy and medical diagnostic imaging. In both these applications, the molecule or subject under study is placed in a magnetic field and irradiated with radio frequency energy.
NMR spectroscopy generates a spectrum where the characteristic absorption frequencies of the sample are...
NMR spectroscopy generates a spectrum where the characteristic absorption frequencies of the sample are...
6.9K
Resonance
65.1K
The Lewis structure of a nitrite anion (NO2−) may actually be drawn in two different ways, distinguished by the locations of the N-O and N=O bonds.
65.1K
Imaging Studies IV: Magnetic Resonance Imaging
275
Introduction:Magnetic Resonance Imaging, or MRI, can include a specialized imaging technique of the urinary system known as Magnetic Resonance Urography (MRU). This radiation-free technique uses strong magnetic fields and radio waves to produce detailed images with the help of a computer. MRU is particularly effective for visualizing fluid-filled structures like the kidneys, ureters, and bladder.Applications of MRI in the Genitourinary SystemKidneys and Ureters: MRI detects tumors, cysts,...
275
Epithelial Tissues and Their Functions
40.3K
Epithelial tissues are large sheets of cells covering all of the surfaces of the body. These surfaces can be internal or external, for example, skin, airways, the digestive tract, the urinary system, and the reproductive system. Hollow organs and body cavities that do not connect to the body's exterior, including blood vessels and serous membranes, are lined by epithelial tissue known as the endothelium.
Epithelial tissues provide the body's first line of protection from physical,...
Epithelial tissues provide the body's first line of protection from physical,...
40.3K


