Deep learning enabled near-isotropic CAIPIRINHA VIBE in the nephrogenic phase improves image quality and renal lesion conspicuity

IF 1.8 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Qinxuan Tan , Jingyu Miao , Leila Nitschke , Marcel Dominik Nickel , Markus Herbert Lerchbaumer , Tobias Penzkofer , Sebastian Hofbauer , Robert Peters , Bernd Hamm , Dominik Geisel , Moritz Wagner , Thula Cannon Walter-Rittel
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Abstract

Background

Deep learning (DL) accelerated controlled aliasing in parallel imaging results in higher acceleration (CAIPIRINHA)-volumetric interpolated breath-hold examination (VIBE), provides high spatial resolution T1-weighted imaging of the upper abdomen. We aimed to investigate whether DL-CAIPIRINHA-VIBE can improve image quality, vessel conspicuity, and lesion detectability compared to a standard CAIPIRINHA-VIBE in renal imaging at 3 Tesla.

Methods

In this prospective study, 50 patients with 23 solid and 45 cystic renal lesions underwent MRI with clinical MR sequences, including standard CAIPIRINHA-VIBE and DL-CAIPIRINHA-VIBE sequences in the nephrographic phase at 3 Tesla. Two experienced radiologists independently evaluated both sequences and multiplanar reconstructions (MPR) of the sagittal and coronal planes for image quality with a Likert scale ranging from 1 to 5 (5 =best). Quantitative measurements including the size of the largest lesion and renal lesion contrast ratios were evaluated.

Results

DL-CAIPIRINHA-VIBE compared to standard CAIPIRINHA-VIBE showed significantly improved overall image quality, higher scores for renal border delineation, renal sinuses, vessels, adrenal glands, reduced motion artifacts and reduced perceived noise in nephrographic phase images (all p < 0.001). DL-CAIPIRINHA-VIBE with MPR showed superior lesion conspicuity and diagnostic confidence compared to standard CAIPIRINHA-VIBE. However, DL-CAIPIRINHA-VIBE presented a more synthetic appearance and more aliasing artifacts (p < 0.023). The mean size and signal intensity of renal lesions for DL-CAIPIRINHA-VIBE showed no significant differences compared to standard CAIPIRINHA-VIBE (p > 0.9).

Conclusions

DL-CAIPIRINHA-VIBE is well suited for kidney imaging in the nephrographic phase, provides good image quality, improved delineation of anatomic structures and renal lesions.
深度学习使CAIPIRINHA VIBE在肾源性阶段接近各向同性,提高了图像质量和肾脏病变的显著性。
背景:深度学习(DL)在并行成像中加速控制混叠导致更高的加速度(CAIPIRINHA)-容积插值屏气检查(VIBE),提供高空间分辨率的上腹部t1加权成像。我们的目的是研究与标准的caipirha - vibe相比,dl - caipirha - vibe在3特斯拉的肾脏成像中是否能改善图像质量、血管明显性和病变可检测性。方法:在这项前瞻性研究中,50例肾实性病变23例,囊性肾病45例,采用临床MR序列,包括标准caipirha - vibe和dl - caipirha - vibe序列,在3 Tesla肾显像期进行MRI检查。两位经验丰富的放射科医生独立评估了矢状面和冠状面序列和多平面重建(MPR)的图像质量,李克特评分范围从1到5(5 =最佳)。定量测量包括最大病变的大小和肾脏病变的对比比率进行评估。结果:dl - caipirha - vibe与标准caipirha - vibe相比,整体图像质量显着提高,肾边界描绘,肾窦,血管,肾上腺得分更高,肾相图像中运动伪影减少,感知噪声降低(p均为  0.9)。结论:dl - caipirha - vibe非常适合肾显像,提供了良好的图像质量,改善了解剖结构和肾脏病变的描绘。
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
European Journal of Radiology Open
European Journal of Radiology Open Medicine-Radiology, Nuclear Medicine and Imaging
CiteScore
4.10
自引率
5.00%
发文量
55
审稿时长
51 days
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