Role of imaging modality in persistent high blood pressure!

I feel to write one important role of imaging modality (radiological technique) when patient suffers from persistent high blood pressure. Sometime patient suffers from persistent high
blood pressure even systemic investigations are normal. It is also noticed normal hormone
level - which is responsible for high blood pressure. In this perspective, imaging method (radiological technique) might be useful option for medical investigation - chest scan of CT
should be suggested. Sometime, it is shown that persistent high blood pressure is caused by abnormal growth of lung tissue (malignant) and it's hormone; however, the charactersitic of
cancer is yet to be studied.