Is there any relationship between adc values of diffusion-weighted imaging and the histopathological prognostic factors of invasive ductal carcinoma?
Autor: | Bahar Guner, Bilgin Kadri Aribas, Işıl Esen Bostancı, Mehmet Ali Gulcelik, Zarife Melda Bulut, Lutfi Dogan, Hale Aydin |
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Rok vydání: | 2018 |
Předmět: |
Gadolinium DTPA
Lymphatic metastasis Prognostic factor Contrast Media Breast Neoplasms 030218 nuclear medicine & medical imaging 03 medical and health sciences 0302 clinical medicine Breast cancer Region of interest Organometallic Compounds medicine Humans Neoplasm Invasiveness Radiology Nuclear Medicine and imaging Prospective Studies Neoplasm Staging Full Paper business.industry Carcinoma Ductal Breast General Medicine Middle Aged Prognosis medicine.disease Invasive ductal carcinoma body regions Diffusion Magnetic Resonance Imaging Lymphatic Metastasis 030220 oncology & carcinogenesis Female Neoplasm staging Imaging technique Neoplasm Grading Nuclear medicine business Diffusion MRI |
Zdroj: | The British Journal of Radiology. :20170705 |
ISSN: | 1748-880X 0007-1285 |
Popis: | OBJECTIVE: MRI is being used increasingly as a modality that can provide important information about breast cancer. Diffusion-weighted imaging (DWI) is an imaging technique from which apparent diffusion coefficient (ADC) values can be calculated in addition to obtaining important structural information which cannot be obtained from other imaging studies. We did not find any significant relationships between ADC values and prognostic factors, but did provide some explanations for conflicting results in the literature. METHODS: The ADC results of 61 females with invasive ductal carcinomas were evaluated. DWI was performed and ADC values were calculated from the area in which restriction of diffusion was the highest in ADC mapping. B value was 500 and region of interest (ROI) was designated between 49 and 100 mm(2). Calculations were performed automatically by the device. Tissue samples were obtained for prognostic factor evaluation. The relationships between ADC and prognostic factors were investigated. Comparisons between groups were made with one-way ANOVA and Kruskal Wallis test. Pairwise comparisons were made with Dunn’s test. Analyses of categorical variables were made with Chi-square test. RESULTS: We found a weak negative correlation between ADC and Ki-67 values (r = −0.279; p = 0.029). When we compared ADC values in regard to tumour type, we found no significant differences for tumour grade, Ki-67 positivity, estrogen receptor positivity, progesterone receptor positivity, C-erb B2, lymphovascular invasion and ductal carcinoma in situ or lobular carcinoma in situ component. On a side note, we found that mean ADC values decreased as tumour grade increased; however, this was not statistically significant. CONCLUSION: The literature contains studies that report conflicting results which may be caused by differences in B values, ROI area and magnetic field strength. Multicentre studies and systematic reviews of these findings may produce crucial data for the use of DWI in breast cancer. ADVANCES IN KNOWLEDGE: To determine if any significant relationship exists between DWI findings and prognostic factors of breast cancer. |
Databáze: | OpenAIRE |
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