Lomas D J, Carroll N R, Johnson G, Antoun N M, Freer C E
Department of Radiology, University of Cambridge, England.
Radiology. 1996 Jul;200(1):129-33. doi: 10.1148/radiology.200.1.8657900.
To develop a noninvasive method for demonstrating the main salivary gland duct systems.
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.
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.
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.
开发一种用于显示主要唾液腺导管系统的非侵入性方法。
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毫秒）、脂肪抑制脉冲序列以及快速采集弛豫增强序列。该技术经过优化以描绘二维厚层内的液体。通过检查10名无症状志愿者和3名有已知唾液腺导管异常症状的患者的主要唾液腺导管进行了初步评估。
所有志愿者的腮腺主导管均清晰显示。所有病例中均可见下颌下腺导管，尽管在投影图像上并非总是可见。在这3名患者中，MR技术分别清晰显示了双侧涎腺扩张、阻塞左下颌下腺导管的结石以及充满液体的舌下囊肿。
初步研究表明，这种MR技术能够成功显示腮腺和下颌下腺导管系统的正常和异常情况，并且与传统X线涎管造影相比具有若干优势。
