小视野ZOOMit DWI与RESOLVE DWI技术对鼻咽部图像质量的价值比较

郭广源; 叶裕丰; 邓炜; 梁奇伟; 郭燕萍; 黄益; 陈汉威

doi:10.12122/j.issn.1674-4500.2021.06.13

小视野ZOOMit DWI与RESOLVE DWI技术对鼻咽部图像质量的价值比较

doi: 10.12122/j.issn.1674-4500.2021.06.13

1.
广州市番禺区中心医院放射科，广东广州 511400
2.
祈福医院骨科，广东广州 511400

基金项目:

广东省科技厅项目 2017ZC0374

广州市西医项目 20211A011117

广州市番禺区重大项目 2021-Z04-01

详细信息

通讯作者:
郭广源，主管技师，E-mail: 718787418@qq.com

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- 被引次数: 0
出版历程
- 收稿日期: 2021-10-12
- 网络出版日期: 2022-01-05
- 刊出日期: 2021-11-20

Evaluation of nasopharyngeal image quality from the ZOOMit DWI and RESOLVE DWI techniques

1.
Department of Radiology, Panyu Central Hospital, Guangzhou 511400, China
2.
Department of Orthopedics, Clifford Hospital, Guangzhou 511400, China

摘要

摘要: 目的对3.0 T MR的RESOLVE DWI和小视野ZOOMit DWI技术在鼻咽部的图像质量进行比较。方法回顾性分析2021年1~10月在医院行3.0 T MR鼻咽部扫描的40例患者。同时扫描ZOOMit DWI和RESOLVE DWI两种不同扩散成像序列扫描，并对这两种扩散加权成像进行定量分析和主观评分。结果两种不同扩散成像序列图像清晰度、伪影和失真的主观评分之间的差异有统计学意义（P < 0.05）。ZOOMit DWI序列的清晰度最好，失真和伪影最少。两种不同扩散加权序列的信噪比、对比噪声比（b=50 s/mm²）无明显差异。ZOOMitDWI的信噪比、对比噪声比（b=800、1000 s/mm²）优于RESOLVE DWI。结论与RESOLVE DWI相比，ZOOMit DWI序列扫描的图像质量更好，适合作为鼻咽部MRI扩散成像的首选序列。
- 鼻咽部 /
- 磁共振成像 /
- 扩散成像
Abstract: Objective To compare the nasopharyngeal image quality with RESOLVE DWI and ZOOMit DWI in 3.0 T MR. Methods Forty patients who underwent 3.0 T MR nasopharyngeal scan in hospital from January to October 2021 were retrospectively analyzed. Two different diffusion imaging sequences, ZOOMit DWI and RESOLVE DWI, were scanned simultaneously, and the two diffusion weighted images were quantitatively analyzed and subjectively scored. Results The subjective scores of image sharpness, artifact and distortion were significantly different between two different diffusion imaging sequences (P < 0.05). ZOOMit DWI sequences had a better sharpness and less distortion and artifacts. SNR and CNR (b=50 s/mm²) of the two diffusion-weighted sequences showed no significant difference. The SNR and CNR (b=800 and b=1000 s/mm²) of ZOOMit DWI were better than that of RESOLVE DWI. Conclusion ZOOMit DWI sequence has better image quality than RESOLVE DWI sequence and it is suitable for MRI diffusion imaging of nasopharynx.
- nasopharynx /
- magnetic resonance imaging /
- diffusion imaging

HTML全文

图 1 某鼻咽癌患者（男，34岁）的影像学表现

A: 采用ZOOMit DWI（b=1000 s/mm²）对肿块局部激励; B: 采用RESOLVE DWI（b=1000 s/mm²）序列采集的图像; C: 采用RESOLVE DWI（b=1000 s/mm²）序列采集的颈部淋巴结肿大.

Figure 1. Image findings of a 34-year-old male patient with nasopharyngeal cancer.

下载: 全尺寸图片幻灯片

图 2 两种不同扩散加权成像的SNR及CNR

^*P < 0.05.

Figure 2. SNR and CNR of two diffusion-weighted images.

下载: 全尺寸图片幻灯片

表 1 MRI扫描序列及参数

Table 1. MRI scan sequence and parameters

参数	TR(ms)	TE(ms)	TA(min)	FOV(mm)	矩阵	层数	层厚(mm)	体素
ZOOMit DWI	4200	80	3:11	18×54	134×134	20	4	0.7×0.7×4
RESOLVE DWI	2850	55	5:25	23×230	160×160	20	4	1.0×1.0×4

下载: 导出CSV

表 2 两种不同扩散加权序列的主观评分比较

Table 2. Comparison of subjective scores between two diffusion-weighted sequences (n=40, Mean±SD)

评价指标	ZOOMit DWI	RESOLVE DWI	F	P
清晰度	3.51±0.47	3.07±0.49	1.09	< 0.001
失真	3.37±0.52	3.03±0.53	1.04	0.003
伪影	3.19±0.54	3.01±0.51	1.12	0.065

下载: 导出CSV

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