Which transducer is primarily used for cardiac exams?

The transducer primarily used for cardiac exams is the phased array transducer. This type of transducer is designed to produce a sector-shaped image, which is essential in capturing the dynamic and often rapid movements of the heart. It uses a technology called phased array, where multiple crystal elements can be activated in different sequences. This allows the sonographer to steer the ultrasound beam electronically, enabling visualization of the heart from various angles without the need to physically move the transducer.

The compact size of the phased array transducer makes it ideal for accessing the heart, particularly when using the apical or subcostal views. It can easily fit between the ribs, which is crucial for obtaining quality images in a limited space. This feature is particularly important in cardiac imaging, where precision and the ability to quickly adjust angles are necessary for an accurate diagnosis.

In contrast, other types of transducers, such as linear and convex (or curved) transducers, are more suited for imaging superficial structures or larger organs rather than the intricate dynamics of the heart. Linear transducers produce images with a rectangular footprint, ideal for vascular imaging, while convex transducers create a broader field of view but may not provide the same level of detail required for cardiac examinations. Thus, the