論文

査読有り
2002年11月

Accumulation of [C-11]acetate in normal prostate and benign prostatic hyperplasia: comparison with prostate cancer

EUROPEAN JOURNAL OF NUCLEAR MEDICINE AND MOLECULAR IMAGING
  • T Kato
  • ,
  • E Tsukamoto
  • ,
  • Y Kuge
  • ,
  • T Takei
  • ,
  • T Shiga
  • ,
  • N Shinohara
  • ,
  • C Katoh
  • ,
  • K Nakada
  • ,
  • N Tamaki

29
11
開始ページ
1492
終了ページ
1495
記述言語
英語
掲載種別
研究論文(学術雑誌)
DOI
10.1007/s00259-002-0885-3
出版者・発行元
SPRINGER-VERLAG

Carbon-11 acetate positron emission tomography (PET) has been reported to be of clinical value for the diagnosis of prostate cancer. However, no detailed analysis has yet been carried out on the physiological accumulation of [C-11]acetate in the prostate. The purpose of this study was to elucidate the physiological accumulation of [C-11]acetate in the prostate using dynamic PET. The study included 30 subjects without prostate cancer [21 with normal prostate and nine with benign prostatic hyperplasia (BPH)] and six patients with prostate cancer. A dynamic PET study was performed for 20 min after intravenous administration of 555 MBq of [C-11]acetate. The standardised uptake value (SUV) at 16-20 min post tracer administration and the early-to-late-activity ratio of the SUV (E/L ratio), which was determined by dividing the SUV6-10 min by the SUV16-20min, were calculated to evaluate the accumulation of [C-11]acetate. The prostate was clearly visualised and distinguished from adjacent organs in PET images in most of the cases. The SUV of the prostate (2.6+/-0.8) was significantly higher than that of the rectum (1.7+/-0.4) or bone marrow (1.3+/-0.3) (P<0.0001 in each case). The SUV of the normal prostate of subjects aged <50 years (3.4+/-0.7) was significantly higher than both the SUV for the normal prostate of subjects aged greater than or equal to50 years (2.3+/-0.7) and that of subjects with BPH (2.1+/-0.6) (P<0.01 in each case). The primary prostate cancer in six cases was visualised by [C-11]acetate PET. However, the difference in the SUV between subjects aged greater than or equal to50 with normal prostate or with BPH and the patients with prostate cancer (1.9+/-0.6) was not statistically significant. There was also no significant difference in the E/L ratio between subjects aged greater than or equal to50 with normal prostate (0.98+/-0.04) or BPH (0.96+/-0.08) and patients with prostate cancer (1.02+/-0.12). In conclusion, a normal prostate exhibits age-related physiological accumulation of [C-11]acetate. Careful interpretation of [C-11]acetate PET images of prostate cancer is necessary because the SUV and the E/L ratio for the normal prostate and for BPH overlap significantly with those for prostate cancer.

Web of Science ® 被引用回数 : 87

リンク情報
DOI
https://doi.org/10.1007/s00259-002-0885-3
PubMed
https://www.ncbi.nlm.nih.gov/pubmed/12397469
Web of Science
https://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcAuth=JSTA_CEL&SrcApp=J_Gate_JST&DestLinkType=FullRecord&KeyUT=WOS:000179279000013&DestApp=WOS_CPL

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