Objective: The diagnostic success of apparent diffusion coefficient (ADC) histogram analysis in focal liver lesions, and the effects
of quantitative data added to contrast-enhanced abdominal magnetic resonance imaging (MRI) on the diagnostic accuracy were
investigated.
Materials and Methods: The conventional MRI findings of 524 lesions in total were retrospectively examined. Contrast enhancement
kinetics and ADC values for each lesion were found through an image analysis software.
Results: Three hundred and fifty (67%) of the lesions were diagnosed as benign and 174 (33%) as malignant. Statistically significant
difference was found between the benign and malignant lesion groups in terms of the minimum, maximum and mean ADC values
(p<0.001). When optimal thresholds for minimum, maximum and mean ADC were taken as 1.47x10-3mm2/s; 1.85x10-3mm2/s;
1.72x10-3mm2/s respectively, sensitivity was found to be 97%; 83%; 95%, specificity was 100%; 98%; 99%, NPV was 100%; 99%;
99%, and PPV was 93%; 74%; 90%. ADC values added to MRI increased the diagnostic success for metastases (92%→96%), HCC
(63%→73%), hemangioma (90%→99%) and FNH (56%→75%).
Conclusion: ADC measurement could not show reasonable success in the diagnosis of specific lesions while being successful in the
differentiation of benign and malignant lesions. Minimum ADC is more successful than mean and maximum ADC. A non-contrastenhanced
MRI protocol based on the ADC measurement applicable to the selected patient group may be helpful.
Contrast agent Liver lesions Diffusion weighted imaging (DWI) Apparent diffusion coefficient (ADC)
Birincil Dil | İngilizce |
---|---|
Konular | Klinik Tıp Bilimleri |
Bölüm | Original Articles |
Yazarlar | |
Yayımlanma Tarihi | 30 Mayıs 2022 |
Yayımlandığı Sayı | Yıl 2022 |