Using a unilateral transtemporal approach, which vessels can be accessed?

The unilateral transtemporal approach in ultrasound is primarily utilized for assessing cerebral arteries, allowing the sonographer to visualize various key vessels in the brain. The correct selection, which identifies the MCA (Middle Cerebral Artery), ACA (Anterior Cerebral Artery), PCA (Posterior Cerebral Artery), and terminal ICA (Internal Carotid Artery), reflects the typical targets of this ultrasound technique.

When using this approach, the ultrasound beam passes through the temporal bone, providing a window to assess the aforementioned arteries, which are crucial for understanding cerebral blood flow and potential pathologies. The Middle Cerebral Artery and Anterior Cerebral Artery are particularly important in evaluating strokes and other cerebrovascular conditions. The inclusion of the Posterior Cerebral Artery and terminal segment of the Internal Carotid Artery further emphasizes the comprehensive capability of this approach to provide valuable vascular data.

In contrast, other options list vessels that either cannot be accessed by this method or focus on segments less commonly evaluated with the unilateral transtemporal approach. Thus, option B stands out as the most pertinent and clinically relevant answer.