MR sialography - Work in progress
MR sialography - Work in progress
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DOI：
10.1148/radiology.200.1.8657900
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发表时间：
1996-07-01
期刊：
影响因子：
19.7
通讯作者：
Freer, CEL
中科院分区：
文献类型：
--
作者：
Lomas, DJ;Carroll, NR;Freer, CEL
目的：发展一种无创的方法来显示主要的唾液腺导管系统。材料和方法：作者开发了一种磁共振（MR）成像方案，该方案使用重t2加权（回波时间，750 msec），脂肪抑制脉冲序列和快速采集与松弛增强。该技术经过优化，可以描绘二维厚板内的流体。通过检查10名无症状志愿者和3名已知唾液管异常的有症状患者的主要唾液腺导管进行初步评估。结果：所有志愿者的腮腺主要腺管均清晰可见。尽管在投影图像上并不总是可见，但所有病例的下颌下导管均可见。在这3例患者中，MR技术清楚地显示双侧唾液扩张，结石阻塞左侧下颌下导管和充满液体的小瘘管。结论：初步研究表明，该磁共振成像技术可以成功地显示正常和异常的腮腺和颌下腺导管系统，与传统的x线涎腺造影相比具有许多优势。
PURPOSE: To develop a noninvasive method for demonstrating the main salivary gland duct systems.MATERIALS AND METHODS: The authors developed a magnetic resonance (MR) imaging protocol that uses a heavily T2-weighted (echo time, 750 msec), fat-suppressed pulse sequence and rapid acquisition with relaxation enhancement. The technique was optimized to depict fluid within a two-dimensional thick slab. A preliminary evaluation was performed by examining the major salivary gland ducts in 10 asymptomatic volunteers and three symptomatic patients with known salivary duct abnormalities.RESULTS: The main parotid gland ducts were clearly demonstrated in all volunteers. The submandibular ducts were visible in all cases, although not always on projection images. In the three patients, the MR technique clearly demonstrated bilateral sialectasis, a calculus obstructing the left submandibular duct, and a fluid-filled ranula, respectively.CONCLUSION: Preliminary work indicates that this MR technique can successfully demonstrate both normal and abnormal parotid and submandibular gland duct systems and has several advantages over conventional x-ray sialography.