Figure 4 | Scientific Reports

Figure 4

From: A joint convolutional-recurrent neural network with an attention mechanism for detecting intracranial hemorrhage on noncontrast head CT

Figure 4

A 71-year-old man with a recent history of head trauma (The images were created by the authors using open-source software, Matplotlib v3.5, Python v3). Non-contrast head CT scan shows a subdural hematoma along the left tentorium cerebelli (right). NormGrad (middle) method generates finer saliency maps than Grad-CAM (left), highlighting the subdural hematoma. The average quality scores were 3.8 points and 1.8 points for the NormGrad and Grad-CAM, respectively. Please note that the observers evaluated saliency maps with the same color spectrum, and the current color maps are adjusted for representative purposes.

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