Cornell
HM-POCUS

Hospital Medicine Point of Care Ultrasonography

Question 1: Which of the following is FALSE regarding phased-array ultrasound transducer:

Features small footprint
Operates at lower frequencies than a standard curvilinear array transducer, which explains its lower spatial resolution
Features best temporal resolution and is therefore best for imaging moving structures such as the heart
Is not an acceptable probe for imaging superficial structures

Question 2: Which of the following statements is TRUE:

In a phased array transducer, the piezoelectric crystals produce an ultrasound beam that sweeps from side to side, allowing for higher temporal resolution and better imaging of moving structures
Curved array and linear probes have similar footprint and thus similar imaging field as crystals in both probes produce parallel US beams
For imaging of the internal jugular vein, the preferred transducer is linear, because it operates at higher frequency and thus offers better temporal resolution
The curved array probe has higher resolution at higher depths which translates into better temporal resolution