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2-2 Getting Started
How scan plane rotation works
To familiarize yourself with scan plane rotation, you may choose to start scanning in one of the transverse
planes — for example, 0° on the system screen is the standard monoplane. If you rotate the scan plane 90°,
you are now scanning in the longitudinal plane, sweeping through two opposite quadrants of the cone.
If you continue to rotate the scan plane another 90° in the same direction, scanning occurs in the mirror
image of the first transverse plane. The only two planes that are equivalent are the two transverse planes at
0° and 180°, one being the mirror image of the other. As shown in
Figure 2-1 on page 2-2, a 180° rotation
of the scan plane fills all four quadrants of the conic imaging volume.
Figure 2-1 Rotating to different imaging planes
The direction of the tip of the endoscope is easily steered using the deflection control wheels on the handle
of the transducer to allow exact positioning of the transducer in the esophagus.
Intended uses
The TEExi transducer is designed for 2D, M Mode, color Doppler (Color), pulsed wave (PW) Doppler, and
continuous wave (CW) Doppler imaging by applying ultrasound energy through the esophagus or stomach
of the patient into the heart. The TEExi transducer is intended to be used on adults only. Backscattered
ultrasound energy from the patient’s heart forms images of the heart to detect abnormalities in structure or
motion, to evaluate the velocity of blood flowing within the heart, and to obtain a color depiction of the
velocities of blood flowing in the heart.
Contraindications
Contraindications for using the TEExi transducer include, but are not limited to, the following:

Fetal imaging

Pediatric imaging
WARNING The physician must consider all possible factors before starting the examination.
0° imaging plane
90° imaging plane
Scan head