Steinkamp H J, Zwicker C, Langer M, Mathe M, Ehritt C, Neumann K, Felix R
Strahlenklinik und Poliklinik, Universitätsklinikum Rudolf Virchow, Berlin.
Aktuelle Radiol. 1992 Jul;2(4):188-95.
Ranking of sonographic maximum/transverse diameter quotients was compared with the ranking of CT in respect of identification and exclusion of cervical lymph node metastases. Both sonography and CT are distinguished by a high degree of sensitivity in the imaging of cervical lymph node metastases. Sonography, with the assistance of the maximum/transverse diameter quotient, can differentiate between benign enlarged and non-enlarged lymph nodes on the one hand and cervical lymph node metastases on the other, with a safety of 95 per cent. CT can yield definite information regarding the tumour status only after contrast medium administration under the criteria of central hypodensity and peripheral marginal enhancement. CT is much less specific than the sonographic M/T quotient (66% vs 95%). Accuracy of sonography (94%) is clearly superior to that of CT (79%).
在识别和排除颈部淋巴结转移方面，比较了超声最大/横径商数的排名与CT的排名。超声检查和CT在颈部淋巴结转移成像方面均具有高度敏感性。借助最大/横径商数，超声检查一方面可以区分良性肿大和未肿大的淋巴结，另一方面可以区分颈部淋巴结转移，其安全性为95%。只有在按照中心低密度和周边边缘强化标准给予造影剂后，CT才能提供有关肿瘤状态的确切信息。CT的特异性远低于超声的M/T商数（66%对95%）。超声检查的准确性（94%）明显优于CT（79%）。
