論文

査読有り 国際誌
2003年4月

MR imaging of vertebral metastases at 0.2 Tesla: Clinical evaluation of T1-weighted opposed-phase gradient-echo imaging

Physiological Chemistry & Physics and Medical NMR
  • Seiichiro Ohno
  • ,
  • Izumi Togami
  • ,
  • Tetsuro Sei
  • ,
  • Kentaro Ida
  • ,
  • Masatoshi Tsunoda
  • ,
  • Kiyonori Yamaoka
  • ,
  • Susumu Kanazawa
  • ,
  • Yoshio Hiraki

35
2
開始ページ
145
終了ページ
156
記述言語
英語
掲載種別
研究論文(学術雑誌)

The purpose of this study was to evaluate clinically T1-weighted spin-echo imaging (T1-SE) and T1-weighted opposed-phase gradient-echo (T1-opposed GRE) in medical examinations for vertebral metastases using 0.2 Tesla MRI. Twenty-one patients (9 males and 12 females, 105 vertebrae) with non-neoplastic lesions were assigned to the normal group (Group N), whereas 27 patients (16 males and 11 females, 133 vertebrae) with malignant metastatic vertebral lesions were assigned to the metastatic group (Group M). Using quantitative analysis, the contrast to noise ratio (CNR) for bone marrow to muscle in the region of interest (ROI) defined by the operator were determined with both groups, whereas the CNR for lesion to bone marrow was determined with Group M. In the subjective analysis, 275 vertebrae of 27 patients in Group M were evaluated. There were significant differences in the Group M between CNR values, T1-SE and T1-opposed GRE. The evaluation by T1-SE image alone was rated as 85.0% for sensitivity, 99.3% for specificity, respectively. On the other hand, evaluation rate only by T1-opposed GRE was 98.5% for sensitivity, 82.4% for specificity, respectively. T1-opposed GRE image is an effective tool for 0.2 Tesla MRI to examine metastatic bone marrow tumors. These findings indicate the necessity of both T1-SE and T1-opposed GRE in diagnostic imaging of vertebral metastases using 0.2 Tesla MRI.

リンク情報
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/15552725
Scopus
https://www.scopus.com/inward/record.uri?partnerID=HzOxMe3b&scp=8644286205&origin=inward
Scopus Citedby
https://www.scopus.com/inward/citedby.uri?partnerID=HzOxMe3b&scp=8644286205&origin=inward
ID情報
  • ISSN : 0748-6642
  • PubMed ID : 15552725
  • SCOPUS ID : 8644286205

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