利用重t2加权3D FLAIR增强正常漏斗隐窝的对比。

IF 2.5 3区 医学 Q2 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING
Magnetic Resonance in Medical Sciences Pub Date : 2022-07-01 Epub Date: 2021-05-13 DOI:10.2463/mrms.mp.2021-0021
Iichiro Osawa, Eito Kozawa, Yuya Yamamoto, Sayuri Tanaka, Taira Shiratori, Akane Kaizu, Kaiji Inoue, Mamoru Niitsu
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引用次数: 2

摘要

目的:本研究的目的是评估使用重t2加权3D液体衰减反转恢复(HT2-FLAIR)在正常状态下对漏斗隐窝的造影剂增强效果。方法:回顾性收集26例患者。我们主观评估了对比后、延迟4小时(4小时)对比后和对比前HT2-FLAIR图像之间的整体对比度增强。我们还通过测量信号强度(SI)比(SIR)客观地进行了时间和空间比较。通过比较漏斗隐窝的SI /中脑的SI (SIRIR-MB)进行时间比较。通过对比脑池隐窝造影后HT2-FLAIR/造影前HT2-FLAIR (SIRPost-Pre)的SI与其他脑脊液间隙(包括第三脑室上部、侧脑室、第四脑室和脑脊液间池)的SI进行空间比较。结果:在主观分析中,所有病例在HT2-FLAIR造影后及延迟4 h时均显示眼底隐窝增强,且延迟4 h时的HT2-FLAIR造影后眼底隐窝增强较弱。客观分析,siri - mb在对比后图像上最高,延迟4 h后图像次之。脑窝隐窝的SIRPost-Pre明显高于其他脑脊液间隙。结论:经静脉注射钆后,HT2-FLAIR显示眼底隐窝增强。颅底隐窝可能是静脉注射钆渗漏到脑脊液的潜在来源。
本文章由计算机程序翻译,如有差异,请以英文原文为准。

Contrast Enhancement of the Normal Infundibular Recess Using Heavily T2-weighted 3D FLAIR.

Contrast Enhancement of the Normal Infundibular Recess Using Heavily T2-weighted 3D FLAIR.

Contrast Enhancement of the Normal Infundibular Recess Using Heavily T2-weighted 3D FLAIR.

Contrast Enhancement of the Normal Infundibular Recess Using Heavily T2-weighted 3D FLAIR.

Purpose: The purpose of the present study was to evaluate contrast enhancement of the infundibular recess in the normal state using heavily T2-weighted 3D fluid-attenuated inversion recovery (FLAIR) (HT2-FLAIR).

Methods: Twenty-six patients were retrospectively recruited. We subjectively assessed overall contrast enhancement of the infundibular recess between postcontrast, 4-hour (4-h) delayed postcontrast, and precontrast HT2-FLAIR images. We also objectively conducted chronological and spatial comparisons by measuring the signal intensity (SI) ratio (SIR). Chronological comparisons were performed by comparing SI of the infundibular recess/SI of the midbrain (SIRIR-MB). Spatial comparisons were conducted by comparing SI on postcontrast HT2-FLAIR/SI on precontrast HT2-FLAIR (SIRPost-Pre) of the infundibular recess with that of other cerebrospinal fluid (CSF) spaces, including the superior part of the third ventricle, lateral ventricles, fourth ventricle, and interpeduncular cistern.

Results: In the subjective analysis, all cases showed contrast enhancement of the infundibular recess on both postcontrast and 4-h delayed postcontrast HT2-FLAIR, and showed weaker contrast enhancement of the infundibular recess on 4-h delayed postcontrast HT2-FLAIR than on postcontrast HT2-FLAIR. In the objective analysis, SIRIR-MB was the highest on postcontrast images, followed by 4-h delayed postcontrast images. SIRPost-Pre was significantly higher in the infundibular recess than in the other CSF spaces.

Conclusion: The present results demonstrated that the infundibular recess was enhanced on HT2-FLAIR after an intravenous gadolinium injection. The infundibular recess may be a potential source of the leakage of intravenously administered gadolinium into the CSF.

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来源期刊
Magnetic Resonance in Medical Sciences
Magnetic Resonance in Medical Sciences RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-
CiteScore
5.80
自引率
20.00%
发文量
71
审稿时长
>12 weeks
期刊介绍: Magnetic Resonance in Medical Sciences (MRMS or Magn Reson Med Sci) is an international journal pursuing the publication of original articles contributing to the progress of magnetic resonance in the field of biomedical sciences including technical developments and clinical applications. MRMS is an official journal of the Japanese Society for Magnetic Resonance in Medicine (JSMRM).
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