Abstract
Purpose
This study was conducted to assess the relationship between 11C-choline uptake and pathologic findings obtained by combined use of magnetic resonance (MR) and positron emission tomography (PET) imaging of patients with prostate cancer.
Materials and methods
We retrospectively evaluated 69 patients with prostate cancer who underwent 11C-choline PET-CT and magnetic resonance imaging before radical prostatectomy. Combined MR–PET images were acquired to obtain precise anatomic information. The maximum standardized uptake value (SUVmax) and metabolic tumor volume (MTV) were compared with pathologic findings from resected specimens as the reference standard.
Results
The mean and standard deviation of tumor SUVmax and MTV were 3.9 ± 1.8 and 12.9 ± 16.4, respectively. Tumors with high MTV (≧8.2) were more likely to be admixed with prostatic intraepithelial neoplasia (PIN) (p < 0.0001) or hyperplasia (p < 0.0001) in the background than those without these findings. Multiple regression analysis also revealed that the presence of hyperplasia (OR; 4.25, 95 % CI 1.25–14.4, p = 0.02) and PIN (OR; 9.22, 95 % CI 2.60–32.7, p = 0.001) were associated with tumors with high MTV.
Conclusion
We have demonstrated, by pathologic evaluation of patients with prostate cancer, that 11C-choline uptake volume is greater for prostate cancer admixed with PIN and hyperplasia than that without.
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Acknowledgments
This work was supported (in part) by a Grant-in-Aid for Cancer Research (21-5-2) from the Ministry of Health, Labor and Welfare.
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The authors declare that we have no conflict of interest.
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Yoneyama, T., Tateishi, U., Terauchi, T. et al. Correlation of metabolic tumor volume and 11C-choline uptake with the pathology of prostate cancer: evaluation by use of simultaneously recorded MR and PET images. Jpn J Radiol 32, 155–163 (2014). https://doi.org/10.1007/s11604-014-0283-3
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DOI: https://doi.org/10.1007/s11604-014-0283-3