Whole-lesion histogram analysis metrics of the apparent diffusion coefficient as a marker of breast lesions characterization at 1.5 T
| Autor: | D. Priovolos, H. Bougias, A. Ghiatas, A. Christou, K. S. Veliou |
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| Rok vydání: | 2016 |
| Předmět: |
Adult
Pathology medicine.medical_specialty Percentile Breast Neoplasms 030218 nuclear medicine & medical imaging Lesion Diagnosis Differential 03 medical and health sciences 0302 clinical medicine Histogram Image Interpretation Computer-Assisted medicine Effective diffusion coefficient Humans Radiology Nuclear Medicine and imaging Statistical analysis Aged Retrospective Studies medicine.diagnostic_test business.industry Magnetic resonance imaging Middle Aged body regions Diffusion Magnetic Resonance Imaging Skewness 030220 oncology & carcinogenesis Data Interpretation Statistical Kurtosis Female medicine.symptom Nuclear medicine business |
| Zdroj: | Radiography (London, England : 1995). 23(2) |
| ISSN: | 1532-2831 |
| Popis: | To retrospectively assess the role of whole-lesion apparent diffusion coefficient (ADC) in the characterization of breast tumors by comparing different histogram metrics.49 patients with 53 breast lesions underwent magnetic resonance imaging (MRI). ADC histogram parameters, including the mean, mode, 10th/50th/90th percentile, skewness, kurtosis, and entropy ADCs, were derived for the whole-lesion volume in each patient. Mann-Whitney U-test, area under the receiver-operating characteristic curve (AUC) were used for statistical analysis.The mean, mode and 10th/50th/90th percentile ADC values were significantly lower in malignant lesions compared with benign ones (all P0.0001), while skewness was significantly higher in malignant lesions P = 0.02. However, no significant difference was found between entropy and kurtosis values in malignant lesions compared with benign ones (P = 0.06 and P = 1.00, respectively). Univariate logistic regression showed that 10th and 50th percentile ADC yielded the highest AUC (0.985; 95% confidence interval [CI]: 0.902, 1.000 and 0.982; 95% confidence interval [CI]: 0.896, 1.000 respectively), whereas kurtosis value yielded the lowest AUC (0.500; 95% CI: 0.355, 0.645), indicating that 10th and 50th percentile ADC values may be more accurate for lesion discrimination.Whole-lesion ADC histogram analysis could be a helpful index in the characterization and differentiation between benign and malignant breast lesions with the 10th and 50th percentile ADC be the most accurate discriminators. |
| Databáze: | OpenAIRE |
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