Abstract

Diffusion weighted imaging and the assessment of apparent diffusion coefficient are used to evaluate lung lesions that were previously ambiguous on contrast-enhanced computed tomography. Materials and methods: This study was conducted at the Department of Radiodiagnosis, Dr. Patnam Mahender Reddy Institute of Medical Sciences, Chevella, Hyderabad, India between May 2022 to April 2023. Magnetic resonance imaging using T2 weighted and diffusion weighted imaging techniques were performed on 40 consecutive people who had indeterminate pulmonary lesions on contrast-enhanced CT scans of the thorax and met the specified criteria for inclusion in the study. After that, the ADC values of the lesion's solid and necrotic parts were evaluated. Results: Histopathology was used to diagnose half of the 40 patients in the study, while sputum culture and follow-up exams following antibiotic treatment were used to diagnose the other half. Both benign and malignant lesions showed hyperintensity on DWI, as determined by a qualitative study comparing the lesion's signal intensity to that of the thoracic skeletal muscle. Signal intensities on b=500 s/mm2 photos were not significantly different from those on b=1000 s/mm2 images, statistically speaking. Conclusion: When evaluating lung lesions with ambiguous characteristics on computed tomography scans, Diffusion weighted imaging has proven to be an effective and safe alternative. MRI performed by using diffusion-weighted (DW) can offer both qualitative and quantitative information that can be helpful for tumour assessment. Moreover, lesion‐to‐spinal cord signal intensity ratio (LSR) has also been shown to be useful for the differentiation of lung lesions. Quantitative tumour assessment is possible by the calculation of ADC. In terms of diagnostic accuracy, there is little to no difference between the two approaches

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