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Annals of Nuclear Medicine

, Volume 17, Issue 6, pp 475–480 | Cite as

Does supplementation of CT and MRI with gallium-67 SPECT improve the differentiation between benign and malignant tumors of the head and neck?

  • Shigeru Kosuda
  • Yoshiko Kadota
  • Satoshi Umeda
  • Shoichi Kusano
  • Hiroshi Fujii
  • Kiyoshi Ichihara
Original Articles
  • 33 Downloads

Abstract

The objective of our study is to determine whether67Ga SPECT can supplement CT and/or MRI diagnostic information by visual comparison of the two separate data sets in patients with head and neck tumors.Methods: A total of 50 patients with head and neck tumors (benign: 19, malignant: 31) were entered in the study. Three board-certified radiologists who had practical experience in interpreting both head and neck CT/MRI and67Ga SPECT images, participated as readers. All of the CT and/or MR images of each patient were shown to each reader first, who after they had finished interpreting them were shown the67Ga SPECT images. They were asked to score each image on a 7-point scale for the likelihood of the presence or absence of malignancy. Histological or cytological evaluation was done in all cases, and the radiologic studies were correlated with these findings.Results: Improvement of all three readers’ performance was from 70.7% to 83.3% in the mean accuracy and from 0.790 to 0.921 in the mean Az value (p=0.033, 0.163, 0.105 in the Az values) after they were shown the67Ga SPECT images.Conclusions:67Ga SPECT should substantially increase confidence in the diagnosis of head and neck tumors when CT and/or MRI do not permit differentiation between benign and malignant disease.

Key words

67Ga SPECT head and neck neoplasm magnetic resonance imaging computed tomography 

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Copyright information

© Springer 2003

Authors and Affiliations

  • Shigeru Kosuda
    • 1
  • Yoshiko Kadota
    • 1
  • Satoshi Umeda
    • 1
  • Shoichi Kusano
    • 1
  • Hiroshi Fujii
    • 2
  • Kiyoshi Ichihara
    • 3
  1. 1.Department of RadiologyNational Defense Medical CollegeTokorozawaJapan
  2. 2.Department of RadiologyKeio University School of MedicineKeioJapan
  3. 3.Department of HealthYamaguchi University School of MedicineYamaguchiJapan

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