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Egyptian Journal of Radiology and Nuclear Medicine
Fig. 5 | Egyptian Journal of Radiology and Nuclear Medicine

Fig. 5

From: Suspicious lung lesions for malignancy: the lesion-to-spinal cord signal intensity ratio in T2WI and DWI–MRI versus PET/CT; a prospective pathologic correlated study with accuracy and ROC analyses

Fig. 5

A 76-year-old male patient complained of hemoptysis and dyspnea. A Axial contrast-enhanced chest CT cut (mediastinal window) showed left medial basal consolidation collapse with internal CT-angiogram and absent air bronchogram with a suspected iso-dense mass lesion. B Axial chest PET-CT image showing high 18F-FDG uptake at most of the lesion. C, D Axial T2WI shows the high signal intensity of the lesion. After placing two ROIs within the largest lesion and the spinal cord, the lesion-to-spinal cord signal intensity ratio was calculated = 1.5. E Axial DWI showing bright signal of restricted diffusion and lesion-to-spinal cord signal intensity ratio was calculated = 1.1. F ADC mapping images showing low signal intensity with minimum ADC (0.5 × 10−3 mm2/s) and mean ADC (0.6 × 10−3 mm2/s). Referring to the estimated cutoff values, T2WI L-to-SC SI ratio, DWI L-to-SC SI ratio, minimum ADC, and mean ADC suggested a malignant process. Pathologically proven small cell lung cancer (SCLC)

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