Cancer percentage of the model output versus MRI grade for validation data. The size of circles for cancerous cases indicates tumor-in-core-length; the larger circles have higher tumor lengths. Cases with GS of 3+3, 3+4, and 4+4, and benign are in different colors of yellow, magenta, red, and blue. Note that there are cases that are placed at the same location of the graph. ×m indicate m cases that place at the same location.