Deep Learning Reconstruction for T2 Weighted Turbo-Spin-Echo Imaging of the Pelvis: Prospective Comparison With Standard T2-Weighted TSE Imaging With Respect to Image Quality, Lesion Depiction, and Acquisition Time.

IF 3.7 3区 医学 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Marshall S Sussman, Lumeng Cui, Stephanie B M Tan, Shopnil Prasla, Tanya Wah-Kahn, Dominik Nickel, Kartik S Jhaveri
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引用次数: 0

Abstract

Purpose: In pelvic MRI, Turbo Spin Echo (TSE) pulse sequences are used for T2-weighted imaging. However, its lengthy acquisition time increases the potential for artifacts. Deep learning (DL) reconstruction achieves reduced scan times without the degradation in image quality associated with other accelerated techniques. Unfortunately, a comprehensive assessment of DL-reconstruction in pelvic MRI has not been performed. The objective of this prospective study was to compare the performance of DL-TSE and conventional TSE pulse sequences in a broad spectrum of pelvic MRI indications.

Methods: Fifty-five subjects (33 females and 22 males) were scanned at 3 T using DL-TSE and conventional TSE sequences in axial and/or oblique acquisition planes. Two radiologists independently assessed image quality in 6 categories: edge definition, vessel margin sharpness, T2 Contrast Dynamic Range, artifacts, overall image quality, and lesion features. The contrast ratio was calculated for quantitative assessment. A two-tailed sign test was used for assessment.

Results: The 2 readers found DL-TSE to deliver equal or superior image quality than conventional TSE in most cases. There were only 3 instances out of 24 where conventional TSE was scored as providing better image quality. Readers agreed on DL-TSE superiority/inferiority/equivalence in 67% of categories in the axial plane and 75% in the oblique plane. DL-TSE also demonstrated a better contrast ratio in 75% of cases. DL-TSE reduced scan time by approximately 50%.

Conclusion: DL-accelerated TSE sequences generally provide equal or better image quality in pelvic MRI than standard TSE with significantly reduced acquisition times.

骨盆T2加权涡旋回波成像的深度学习重建:与标准T2加权TSE成像在图像质量、病变描述和采集时间方面的前瞻性比较
目的:在骨盆MRI中,涡轮自旋回波(TSE)脉冲序列用于t2加权成像。然而,它冗长的获取时间增加了工件的可能性。深度学习(DL)重建可以减少扫描时间,而不会降低与其他加速技术相关的图像质量。遗憾的是,尚未对骨盆MRI的dl重建进行全面评估。这项前瞻性研究的目的是比较DL-TSE和常规TSE脉冲序列在骨盆MRI适应症的广谱表现。方法:使用DL-TSE和常规TSE序列在轴位和/或斜位采集平面上对55名受试者(33名女性和22名男性)进行3 T扫描。两名放射科医生独立评估了6个类别的图像质量:边缘清晰度、血管边缘清晰度、T2对比度动态范围、伪影、整体图像质量和病变特征。计算对比度进行定量评价。采用双尾符号检验进行评估。结果:两位读者发现DL-TSE在大多数情况下提供与传统TSE相同或更好的图像质量。在24个实例中,只有3个实例的传统TSE被评为提供更好的图像质量。67%的读者认同DL-TSE在轴向面的优势/劣势/等效性,75%的读者认同DL-TSE在斜向面的优势/劣势/等效性。DL-TSE在75%的病例中也显示出更好的对比度。DL-TSE减少了大约50%的扫描时间。结论:dl加速TSE序列通常在骨盆MRI中提供与标准TSE相同或更好的图像质量,且显著减少了采集时间。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
CiteScore
6.20
自引率
12.90%
发文量
98
审稿时长
6-12 weeks
期刊介绍: The Canadian Association of Radiologists Journal is a peer-reviewed, Medline-indexed publication that presents a broad scientific review of radiology in Canada. The Journal covers such topics as abdominal imaging, cardiovascular radiology, computed tomography, continuing professional development, education and training, gastrointestinal radiology, health policy and practice, magnetic resonance imaging, musculoskeletal radiology, neuroradiology, nuclear medicine, pediatric radiology, radiology history, radiology practice guidelines and advisories, thoracic and cardiac imaging, trauma and emergency room imaging, ultrasonography, and vascular and interventional radiology. Article types considered for publication include original research articles, critically appraised topics, review articles, guest editorials, pictorial essays, technical notes, and letter to the Editor.
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