深度学习重建对使用计算机断层扫描评估胰腺囊性病变的影响。

IF 1.7 Q3 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Radiological Physics and Technology Pub Date : 2024-12-01 Epub Date: 2024-08-15 DOI:10.1007/s12194-024-00834-6
Jun Kanzawa, Koichiro Yasaka, Yuji Ohizumi, Yuichi Morita, Mariko Kurokawa, Osamu Abe
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引用次数: 0

摘要

本研究旨在比较深度学习重建(DLR)和滤波背投影(FBP)重建的计算机断层扫描(CT)图像的图像质量和胰腺囊性病变的检测性能。这项回顾性研究纳入了 54 名患者(平均年龄:67.7 ± 13.1),他们在 2023 年 5 月至 2023 年 8 月期间接受了造影剂增强 CT 检查。在符合条件的患者中,分别有 30 人和 24 人的胰腺囊性病变呈阳性和阴性。DLR 和 FBP 用于重建门静脉相位图像。客观图像质量分析使用腹主动脉、胰腺病变和胰腺实质的感兴趣区计算定量图像噪声、信噪比(SNR)和对比度-噪声比(CNR)。三位双盲放射科医生进行了主观图像质量评估和病灶检测测试。病灶描绘、正常结构说明、主观图像噪声和整体图像质量被用作主观图像质量指标。与 FBP 相比,DLR 能明显降低定量图像噪声(p
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Effect of deep learning reconstruction on the assessment of pancreatic cystic lesions using computed tomography.

This study aimed to compare the image quality and detection performance of pancreatic cystic lesions between computed tomography (CT) images reconstructed by deep learning reconstruction (DLR) and filtered back projection (FBP). This retrospective study included 54 patients (mean age: 67.7 ± 13.1) who underwent contrast-enhanced CT from May 2023 to August 2023. Among eligible patients, 30 and 24 were positive and negative for pancreatic cystic lesions, respectively. DLR and FBP were used to reconstruct portal venous phase images. Objective image quality analyses calculated quantitative image noise, signal-to-noise ratio (SNR), and contrast-to-noise ratio (CNR) using regions of interest on the abdominal aorta, pancreatic lesion, and pancreatic parenchyma. Three blinded radiologists performed subjective image quality assessment and lesion detection tests. Lesion depiction, normal structure illustration, subjective image noise, and overall image quality were utilized as subjective image quality indicators. DLR significantly reduced quantitative image noise compared with FBP (p < 0.001). SNR and CNR were significantly improved in DLR compared with FBP (p < 0.001). Three radiologists rated significantly higher scores for DLR in all subjective image quality indicators (p ≤ 0.029). Performance of DLR and FBP were comparable in lesion detection, with no statistically significant differences in the area under the receiver operating characteristic curve, sensitivity, specificity and accuracy. DLR reduced image noise and improved image quality with a clearer depiction of pancreatic structures. These improvements may have a positive effect on evaluating pancreatic cystic lesions, which can contribute to appropriate management of these lesions.

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来源期刊
Radiological Physics and Technology
Radiological Physics and Technology RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
3.00
自引率
12.50%
发文量
40
期刊介绍: The purpose of the journal Radiological Physics and Technology is to provide a forum for sharing new knowledge related to research and development in radiological science and technology, including medical physics and radiological technology in diagnostic radiology, nuclear medicine, and radiation therapy among many other radiological disciplines, as well as to contribute to progress and improvement in medical practice and patient health care.
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