Fischbach R, Kugel H, Ernst S, Schröder U, Brochhagen H G, Jungehülsing M, Heindel W
Department of Diagnostic Radiology, University of Cologne, Germany.
J Comput Assist Tomogr. 1997 Sep-Oct;21(5):826-30. doi: 10.1097/00004728-199709000-00032.
The aim of this study was to evaluate an MR technique optimized for imaging of the parotid gland ductal system.
The pulse sequence was optimized in 10 volunteers to depict static or nearly static fluid in the parotid ductal system. A heavily T2-weighted fast SE sequence (TR 3,600 ms/TE 800 ms) with a slice thickness of 30-40 mm using an 8 cm surface coil allowed depiction of the fluid-filled parotid duct. Thirteen patients with benign as well as malignant parotid gland pathologies were examined: sialadenitis (n = 2), sialadenosis (n = 3), Heerfordt syndrome (n = 1), pleomorphic adenoma (n = 2), parotid carcinoma (n = 1), lymphoepithelial carcinoma (n = 1), cystadenolymphoma (n = 2), and non-Hodgkin lymphoma (n = 1).
The heavily T2-weighted projection image yielded good quality sialographic images. The main duct and primary branching ducts were clearly depicted in all normal cases. The main duct was visualized in all patients. Intra- and extraglandular duct widening and ductal strictures were well depicted. Sialolithiasis with a calculus in the main duct was correctly demonstrated in one case.
MR sialography is noninvasive and does not depend on duct cannulation or contrast agent injection. Initial experience with a thick slice projection technique indicates that MR sialography can be successfully applied to image the parotid gland ductal system.
本研究的目的是评估一种针对腮腺导管系统成像进行优化的磁共振技术。
在10名志愿者中对脉冲序列进行优化，以描绘腮腺导管系统中的静态或近乎静态的液体。使用8厘米表面线圈，采用层厚30 - 40毫米的重T2加权快速自旋回波序列（TR 3600毫秒/TE 800毫秒），能够显示充满液体的腮腺导管。对13例患有腮腺良性和恶性病变的患者进行了检查：涎腺炎（n = 2）、涎腺肿大（n = 3）、黑福特综合征（n = 1）、多形性腺瘤（n = 2）、腮腺癌（n = 1）、淋巴上皮癌（n = 1）、腺淋巴瘤（n = 2）和非霍奇金淋巴瘤（n = 1）。
重T2加权投影图像产生了高质量的涎管造影图像。在所有正常病例中，主导管和一级分支导管均清晰显示。所有患者的主导管均可见。腺内和腺外导管增宽以及导管狭窄均显示良好。1例主导管内有结石的涎石病得到正确显示。
磁共振涎管造影是非侵入性的，不依赖于导管插管或造影剂注射。厚层投影技术的初步经验表明，磁共振涎管造影可成功应用于腮腺导管系统的成像。
