Amide proton transfer (APT) magnetic resonance imaging of prostate cancer: comparison with Gleason scores

Yukihisa Takayama, Akihiro Nishie, Masaaki Sugimoto, Osamu Togao, Yoshiki Asayama, Kousei Ishigami, Yasuhiro Ushijima, Daisuke Okamoto, Nobuhiro Fujita, Akira Yokomizo, Jochen Keupp, Hiroshi Honda

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Abstract

Objective: To evaluate the utility of amide proton transfer (APT) imaging in estimating the Gleason score (GS) of prostate cancer (Pca). Materials and methods: Sixty-six biopsy-proven cancers were categorized into four groups according to the GS: GS-6 (3 + 3); GS-7 (3 + 4/4 + 3); GS-8 (4 + 4) and GS-9 (4 + 5/5 + 4). APT signal intensities (APT SIs) and apparent diffusion coefficient (ADC) values of each GS group were compared by one-way analysis of variance with Tukey’s HSD post hoc test. Results: The mean and standard deviation of the APT SIs (%) and ADC values (×10−3 mm2/s) were as follows: GS-6, 2.48 ± 0.59 and 1.16 ± 0.26; GS-7, 5.17 ± 0.66 and 0.92 ± 0.18; GS-8, 2.56 ± 0.85 and 0.86 ± 0.17; GS-9, 1.96 ± 0.75 and 0.85 ± 0.18, respectively. The APT SI of the GS-7 group was highest, and there were significant differences between the GS-6 and GS-7 groups and the GS-7 and GS-9 groups (p < 0.05). The ADC value of the GS-6 group was significantly higher than each value of the GS-7, GS-8, and GS-9 groups (p < 0.05), but no significant differences were obtained among the GS-7, GS-8, and GS-9 groups. Conclusion: The mean APT SI in Pca with a GS of 7 was higher than that for the other GS groups.

Original languageEnglish
Pages (from-to)671-679
Number of pages9
JournalMagnetic Resonance Materials in Physics, Biology and Medicine
Volume29
Issue number4
DOIs
Publication statusPublished - Aug 1 2016

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All Science Journal Classification (ASJC) codes

  • Biophysics
  • Radiological and Ultrasound Technology
  • Radiology Nuclear Medicine and imaging

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