<s>[INST] my husbands ct scan report says that there are old, lacunar infarcts in the posterior aspects of the corona radiata bilaterally. and that there is a moderate amount of patchy hypodensity in the periventricular and deep white matter of both cerebral hemispheres. what does this mean? [/INST] HIT hank for asking to ChatDoctorI really appreciate your concern, you have not mentioned your husbands age and the clinical complain about what he has been gone for CT scan here the given report need to be correlated with the clinical complaints, just on the basis of given report it can be said that such findings are seen in old age patients and with the patient who had history of TIA (Transient ischemic attack) due to hypertension, hope this information helps you, have nice day. </s>