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Abdominal Radiology

, Volume 44, Issue 10, pp 3432–3440 | Cite as

Validation of SE-EPI-based T2 mapping for characterization of prostate cancer: a new method compared with the traditional CPMG method

  • Zan Ke
  • Xu Yan
  • Xiangde Min
  • Wei Cai
  • Peipei Zhang
  • Huijuan You
  • Chanyuan Fan
  • Liang WangEmail author
Pelvis
  • 55 Downloads

Abstract

Purpose

We aim to compare the results of spin echo–echo planar imaging (SE-EPI)-based T2 mapping with those of the conventional Carr–Purcell–Meiboom–Gill (CPMG) method and to investigate the potential validity of SE-EPI-T2 mapping for the characterization of prostate cancer (PCa).

Methods

Our retrospective study included 42 PCa patients and 42 noncancer patients who underwent 3.0T MRI with b values ranging from 0 to 2000 s/mm2 and echo times (TEs) ranging from 32 to 100 ms before biopsies. Bland–Altman analysis was used to compare the agreement between the two methods. The correlations between CPMG-T2 values and SE-EPI-T2 values at different b values were determined by Spearman’s rho analysis or Pearson analysis. The Mann–Whitney U test and two-sample t tests were used to analyze the differences between the cancerous and noncancerous groups.

Results

Substantial agreement regarding the measurements was observed between the two methods. The average correlation between the CPMG-T2 values and SE-EPI-T2 values was moderate and positive, and the best correlations were found at b = 200 s/mm2 in the noncancer group (r = 0.557, P = 0.000) and at b = 100 s/mm2 in the cancer group (r = 0.537, P = 0.000). In addition, statistically significant differences were found between the noncancer and cancer groups in T2 values and ADC values (diff TEs) (P = 0.000).

Conclusions

Substantial agreement in the measurements was found between the SE-EPI method and CPMG method. SE-EPI-based T2 mapping has potential clinical value for the prostate and can be considered an alternative to the traditional CPMG-T2 mapping method.

Keywords

Diffusion magnetic resonance imaging Echo planar imaging Magnetic resonance imaging Prostate cancer T2 mapping 

Notes

Acknowledgements

We thank Xu Yan and his team from the MR Collaboration NE Asia, Siemens Healthcare, for providing the scan guide and settings.

Funding

This work was supported by the National Natural Science Foundation of China (NSFC) [Grant Numbers 81671656 and 81171307].

Compliance with ethical standards

Conflict of interest

Xu Yan is an employee of Siemens Healthcare but had no control over the inclusion of any data or information that might have presented a conflict of interest. There are no actual or potential conflicts of interest to declare in relation to this article. None of the other authors have conflicts of interest or specific financial interests relevant to the subject of this article.

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  1. 1.Department of Radiology, Tongji Hospital, Tongji Medical CollegeHuazhong University of Science and TechnologyWuhanChina
  2. 2.MR Collaboration NE AsiaSiemens HealthcareShanghaiChina

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