Diagnostic usefulness of water-to-fat ratio and choline concentration in malignant and benign breast lesions and normal breast parenchyma: An in vivo 1H MRS study

Sunitha B. Thakur, Sandra B. Brennan, Nicole M. Ishill, Elizabeth A. Morris, Laura Liberman, D. David Dershaw, Lia Bartella, Jason A. Koutcher, Wei Huang

Research output: Contribution to journalArticlepeer-review

28 Scopus citations

Abstract

Purpose: To compare total choline concentrations ([Cho]) and water-to-fat (W/F) ratios of subtypes of malignant lesions, benign lesions, and normal breast parenchyma and determine their usefulness in breast cancer diagnosis. Reference standard was histology. Materials and Methods: In this HIPPA compliant study, proton MRS was performed on 93 patients with suspicious lesions (>1 cm) who underwent MRI-guided interventional procedures, and on 27 prospectively accrued women enrolled for screening MRI. (W/F) and [Cho] values were calculated using MRS data. Results: Among 88 MRS-evaluable histologically-confirmed lesions, 40 invasive ductal carcinoma (IDC); 10 invasive lobular carcinoma (ILC); 4 ductal carcinoma in situ (DCIS); 3 invasive mammary carcinoma (IMC); 31 benign. No significant difference observed in (W/F) between benign lesions and normal breast tissue. The area under curve (AUC) of receiver operating characteristic (ROC) curves for discriminating the malignant group from the benign group were 0.97, 0.72, and 0.99 using [Cho], (W/F) and their combination as biomarkers, respectively. (W/F) performs significantly (P < 0.0001;AUC = 0.96) better than [Cho] (AUC = 0.52) in differentiating IDC and ILC lesions. Conclusion: Although [Cho] and (W/F) are good biomarkers for differentiating malignancy, [Cho] is a better marker. Combining both can further improve diagnostic accuracy. IDC and ILC lesions have similar [Cho] levels but are discriminated using (W/F) values.

Original languageEnglish (US)
Pages (from-to)855-863
Number of pages9
JournalJournal of Magnetic Resonance Imaging
Volume33
Issue number4
DOIs
StatePublished - Apr 2011

Keywords

  • Breast lesions
  • Choline concentration
  • Proton MR spectroscopy
  • Water-to-fat ratio

ASJC Scopus subject areas

  • Radiology Nuclear Medicine and imaging

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