Transcranial Doppler in Dementia: A Promising Tool for Early Detection and Subtyping

Dementia remains a leading cause of morbidity among older adults, and early diagnosis is crucial for timely intervention, improved outcomes, and appropriate care planning. While advanced neuroimaging techniques are considered the gold standard for early detection and subtyping, their limited availability in many regions underscores the need for accessible alternatives. Transcranial Doppler (TCD) and transcranial sonography (TCS) offer low-cost, noninvasive, and portable approaches to assess cerebral hemodynamics and structural brain changes. As evidence continues to evolve, these sonographic tools hold promise as complementary approaches to conventional imaging, particularly where advanced modalities are unavailable.