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Authors : Onur BUĞDAYCI, Mehmet Nihat KODALLI, Fuat DEDE, İsmet CENGİÇ, Derya TÜRELİ, Hilal Altaş AYDIN, Ahmet ASLAN

Pages : 21-26

Doi:10.5472/MMJ.2013.03242.1

View : 15 | Download : 8

Publication Date : 2015-09-30

Article Type : Research Paper

Abstract :ABSTRACT Objective: We have compared diffusion-weighted magnetic resonance imaging insert ignore into journalissuearticles values(DW-MRI); properties of mediastinal lymph nodes in lung cancer patients with positron emission tomography/ computed tomography insert ignore into journalissuearticles values(PET/CT); findings. Patients and Methods: Twenty-one consecutive untreated patients with lung cancer were included. DW-MRI was performed on a 1,5T scanner with b values of 50, 500 and 1000. Additional MR imaging was performed for anatomical correlation. Results: A total of 47 lymph nodes were analyzed. While no correlation was found between minimum apparent diffusion coefficient insert ignore into journalissuearticles values(ADC); values insert ignore into journalissuearticles values(ADCmin); of lymph nodes and their maximum standardized uptake values insert ignore into journalissuearticles values(SUVmax); on PET/CT, ADCmin ratios of lymph nodes to main lesion insert ignore into journalissuearticles values(ADCmin Node/ Lesion); insert ignore into journalissuearticles values(r = - 0.407; p = 0.005); and lymph node to cerebrospinal fluid insert ignore into journalissuearticles values(ADCmin Node/CSF); insert ignore into journalissuearticles values(r = - 0.364; p = 0.012); were correlated with SUVmax. Cutoff values for DW-MRI parameters were determined using ROC analysis. Six lymph nodes were histopathologically examined. Both methods correctly identified one metastatic and two metastasis negative lymph nodes, while staging one lymph node with granulomatous change as metastasis positive. Two metastasis negative lymph nodes, reported as suspicious on PET/CT, were correctly staged on DW-MRI. Conclusion: Our findings indicate that DW-MRI could be at least as valuable as PET/CT in mediastinal staging of patients with lung cancer.
Keywords : Difüzyon manyetik rezonans görüntüleme, Pozitron emisyon tomografi Bilgisayarlı tomografi, Akciğer tümörleri, Lenf nodları, Mediasten