Final answer:
Imaging techniques such as MRI and CT scanning are the most sensitive modalities for detecting venous/vascular air embolism.
Step-by-step explanation:
The most sensitive modalities for detecting venous/vascular air embolism are imaging techniques such as Magnetic Resonance Imaging (MRI) and Computed Tomography (CT) scanning.
For example, an MRI can provide detailed images of soft tissues, including the heart, arteries, and veins. When a patient is injected with an MRI contrast agent, the magnetic properties of water in cells are altered, allowing a physician to detect any abnormalities.
Similarly, CT scanning can also be used to detect air embolism by producing detailed cross-sectional images of the body.