Department of Diagnostic Radiology, Singapore General Hospital, 31, Third Hospital Ave, Central Region, Singapore 168753; Duke-NUS Medical School, Central Region, Singapore.
Department of Diagnostic Radiology, Singapore General Hospital, 31, Third Hospital Ave, Central Region, Singapore 168753; Duke-NUS Medical School, Central Region, Singapore.
Acad Radiol. 2024 Mar;31(3):956-965. doi: 10.1016/j.acra.2023.07.013. Epub 2023 Aug 28.
To evaluate the effect of compressed SENSE (CS) in clinical settings on scan time reduction and image quality.
Ninety-five magnetic resonance imaging (MRI) scans from different anatomical regions were acquired, consisting of a standard protocol sequence (SS) and sequence accelerated with CS. Anonymized paired sequences were randomly displayed and rated by six blinded subspecialty radiologists. Side-by-side evaluation on perceived sharpness, perceived signal-to-noise-ratio (SNR), lesion conspicuity, and artifacts were compared and scored on a five-point Likert scale, and individual image quality was evaluated on a four-point Likert scale.
CS reduced overall scan time by 32% while maintaining acceptable MRI quality for all regions. The largest time savings were seen in the spine (mean = 68 seconds, 44% reduction) followed by the brain (mean = 86 seconds, 37% reduction). The sequence with maximum time savings was intracranial 3D-time-of-flight magnetic resonance angiography (202 seconds, 56% reduction). CS was mildly inferior to SS on perceived sharpness, perceived SNR, and lesion conspicuity (mean scores = 2.32-2.96, P < .001 [1: SS superior; 3: equivalent; 5: CS superior]). CS was equivalent to SS for joint and body scans on overall image quality (CS = 3.02-3.37, SS = 3.04-3.68, P > .05, [1: lowest quality and 4: highest quality]). The overall image quality of CS was slightly less for brain and spine scans (mean CS = 2.79-3.05, mean SS = 3.13-3.43, P = .021) but still diagnostic. Good overall clinical acceptance for CS (88%) was noted with full clinical acceptance for body scans (100%) and high acceptance for other regions (68%-95%).
CS significantly reduced MR acquisition time while maintaining acceptable image quality. The implementation of CS may improve departmental workflows and enhance patient care.
评估临床环境中压缩 SENSE（CS）在减少扫描时间和提高图像质量方面的效果。
共采集了 95 例来自不同解剖区域的磁共振成像（MRI）扫描，包括标准协议序列（SS）和使用 CS 加速的序列。将匿名配对序列随机显示并由 6 名盲法亚专科放射科医生进行评分。对感知锐度、感知信噪比（SNR）、病变显示和伪影进行并排评估，并在 5 分制 Likert 量表上进行评分，在 4 分制 Likert 量表上对个别图像质量进行评分。
CS 使所有区域的整体扫描时间减少了 32%，同时保持了可接受的 MRI 质量。脊柱的时间节省最大（平均 68 秒，减少 44%），其次是大脑（平均 86 秒，减少 37%）。节省时间最多的序列是颅内 3D 时间飞跃磁共振血管造影（202 秒，减少 56%）。CS 在感知锐度、感知 SNR 和病变显示方面略逊于 SS（平均评分 2.32-2.96，P<0.001[1：SS 更优；3：等效；5：CS 更优]）。CS 在关节和身体扫描的整体图像质量方面与 SS 相当（CS = 3.02-3.37，SS = 3.04-3.68，P>.05，[1：最低质量，4：最高质量]）。CS 对大脑和脊柱扫描的整体图像质量略低（平均 CS = 2.79-3.05，平均 SS = 3.13-3.43，P=.021），但仍具有诊断价值。CS 得到了很好的临床总体接受度（88%），身体扫描得到了完全的临床接受度（100%），其他区域的接受度也很高（68%-95%）。
CS 显著减少了 MR 采集时间，同时保持了可接受的图像质量。CS 的实施可以改善部门工作流程并提高患者护理水平。
