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Updated: Jan 6, 2026
Quantitation of Intra-peritoneal Ovarian Cancer Metastasis
Published on: July 18, 2016
Feasibility study on QSM and R2* mapping for quantitative evaluation of iron deposition and ovarian function
Dawei Ding1,2, Lingyu Chang1, Xuemei Wang1,2
1Department of Radiology, Qilu Hospital of Shandong University, Wenhua west road 107, Lixia District, Jinan City, 250012, Shandong Province, People's Republic of China.
Objectives:
To evaluate the feasibility of quantitative susceptibility mapping (QSM) and R2* mapping in assessing iron deposition in endometriotic ovarian cysts (EMO) and their potential implications for ovarian reserve.
Materials And Methods:
This prospective study included 28 patients (33 lesions) with histopathologically confirmed EMO who underwent preoperative MRI examinations, including R2* mapping and QSM. Cyst fluid iron concentration ([Fe]) was measured via inductively coupled plasma optical emission spectrometry. Serum anti-Müllerian hormone (AMH) levels were quantified as a marker of ovarian reserve. Pearson correlation and regression analyses were performed to assess associations among AMH, [Fe], R2*, and QSM values.
Results:
In Group All Ages, AMH was negatively correlated with age (r = -0.74, p < 0.001) and [Fe] (r = -0.35, p = 0.048), while [Fe] showed moderate positive correlations with R2* (r = 0.55, p < 0.001) and QSM (r = 0.56, p < 0.001). In Group < 40 years, AMH exhibited moderate negative correlations with [Fe] (r = -0.45, p = 0.031), R2* (r = -0.48, p = 0.019), QSM (r = -0.49, p = 0.018). Multiple regression analyses confirmed that [Fe], R2*, QSM were significant predictors of AMH levels (p < 0.05). R2* and QSM were highly correlated (r = 0.72, p < 0.001), validating their consistency in assessing iron content.
Conclusion:
R2* mapping and QSM reliably quantify iron deposition in EMO, with in vitro validation supporting their accuracy. Moreover, the potential link between iron deposition and ovarian reserve highlights the preliminary value of these methods in assessing ovarian function.
