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[磁共振成像时间在子宫良恶性肿瘤诊断中的价值]

[The value of MRT in the diagnosis of benign and malignant tumors of the uterus].

作者信息

Hamm B

机构信息

Institut für Radiologie, Medizinische Fakultät, Humboldt-Universität zu Berlin, Universitätsklinikum Charité.

出版信息

Rofo. 1999 Apr;170(4):327-37. doi: 10.1055/s-2007-1011050.

Abstract

Magnetic resonance (MR) imaging gains a more and more important role in the diagnostic assessment of the female pelvis. The free selection of the imaging plane is of particular importance for the visualization of the uterus, and the high soft-tissue contrast presently offers the best possibilities for assessment of the zonal anatomy of the uterus. Advances in coil technology and the use of time-saving pulse sequences that, in addition, yield high-resolution images (e.g., fast spin-echo sequences) have made MR imaging a reliable diagnostic modality with a high image quality. There is no doubt that ultrasound continues to be the most widely used imaging modality besides the clinical examination. However, ultrasound is not only limited by high interexaminer variation but also by an insufficient tissue characterization and, above all, the lacking possibility of staging malignancies. Computed tomography has turned out to be inefficient in determining the local tumor stage due to its poor soft-tissue contrast and should thus only be used in advanced tumor stages. MR imaging, on the other hand, excellently depicts the morphologic details of the female pelvis and helps in the assessment of both benign and malignant masses of the uterus and has the highest diagnostic value in staging malignancies. Furthermore, recent studies have shown that MR imaging is also cost-effective as a pretherapeutic modality in cervical cancer.

摘要

磁共振(MR)成像在女性盆腔的诊断评估中发挥着越来越重要的作用。成像平面的自由选择对于子宫的可视化尤为重要,目前较高的软组织对比度为评估子宫的分层解剖结构提供了最佳条件。线圈技术的进步以及使用省时且能产生高分辨率图像的脉冲序列(如快速自旋回波序列),使得MR成像成为一种具有高图像质量的可靠诊断方式。毫无疑问,除临床检查外,超声仍然是使用最广泛的成像方式。然而,超声不仅受到检查者之间差异较大的限制,还受到组织特征描述不足的限制,最重要的是,它无法对恶性肿瘤进行分期。由于计算机断层扫描的软组织对比度较差,在确定局部肿瘤分期方面效率不高,因此仅应在肿瘤晚期使用。另一方面,MR成像能出色地描绘女性盆腔的形态细节,有助于评估子宫的良性和恶性肿块,并且在恶性肿瘤分期方面具有最高的诊断价值。此外,最近的研究表明,MR成像作为宫颈癌的治疗前检查手段也具有成本效益。

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