What does slightly heterogenerous marrow signal, nonspecific, may be due to underlying marrow dysfunction and/or infiltrative process- correlate with bone scan mean? Otherwise, no definite acute intracranial findings and without significant intracranial abnormality. Essentially unremarkable signal intensity of the brain except for a few scattered small foci of T2/ FLAIR hyperintensity within the cerebral white matter, nonspecific,but likely within normal limits for age. I am 64 Female Should I be worried. I was in a car accident and hit my head very hard on the left side!