定制低剂量鼻窦三维CT

Tailored low dose three-dimensional CT of paranasal sinuses.

作者信息

Damilakis J, Prassopoulos P, Mazonakis M, Bizakis J, Papadaki E, Gourtsoyiannis N

机构信息

Department of Medical Physics, University of Crete, Iraklion, Greece.

出版信息

Clin Imaging. 1998 Jul-Aug;22(4):235-9. doi: 10.1016/s0899-7071(98)00014-x.

DOI:10.1016/s0899-7071(98)00014-x

PMID:9699043

Abstract

A technique for three-dimensional (3D) computed tomography (CT) of the paranasal sinuses was evaluated. The influence of milliamperage and reconstruction algorithms on image quality was studied in a phantom. Eleven patients with bony abnormalities of the paranasal sinuses underwent CT to assess the clinical impact of 3D CT protocol. Contiguous 1.5-mm sections obtained at 120 kVp/175 mA/1.9 sec can provide 3D images with high diagnostic image quality. This technique offers the advantage of a much lower dose than that of the conventional CT (CCT) examination of paranasal sinuses. Three-dimensional CT protocol of paranasal sinuses is suggested for use for the evaluation of bony abnormalities and for preoperative planning of the above region.

摘要

对一种用于鼻旁窦三维（3D）计算机断层扫描（CT）的技术进行了评估。在体模中研究了毫安数和重建算法对图像质量的影响。11例鼻旁窦存在骨质异常的患者接受了CT检查，以评估3D CT方案的临床影响。在120 kVp/175 mA/1.9秒条件下获取的连续1.5毫米层面能够提供具有高诊断图像质量的3D图像。该技术具有比传统鼻旁窦CT（CCT）检查低得多的辐射剂量这一优势。建议将鼻旁窦的三维CT方案用于评估骨质异常以及该区域的术前规划。