Olympus UM-3R Medical Endoscopic Ultrasound Probe

Olympus UM-3R Medical Endoscopic Ultrasound Probe

The Olympus UM-3R is a medical endoscopic ultrasound probe used in hospitals for internal imaging.

It is a miniature radial ultrasound probe made by Olympus, designed to be inserted through an endoscope to visualize tissues inside the body.

Key features
Type: Radial mechanical endoscopic ultrasound probe
Frequency: 20 MHz (higher resolution than UM-2R)
Imaging: 360° cross-sectional ultrasound view of surrounding tissue
Diameter: about 2.5 mm, f

ts through standard endoscope channels (≥2.8 mm)
Working length: ~205 cm
What doctors use it for
Examining the esophagus, stomach, and intestines
Evaluating tumors, lesions, and tissue layers
Guiding diagnosis in gastroenterology and bronchoscopy

Simple explanation

The UM-3R is basically:

a very thin “ultrasound camera on a wire” that gives detailed 360° images from inside the body during endoscopy.

Difference from UM-2R (quick context)
UM-2R: 12 MHz → deeper view, lower resolution
UM-3R: 20 MHz → sharper, more detailed imaging

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