U20L All-Digital Handheld Probe Ultrasonic Diagnostic Instrument

Product Introduction

The U20L All-Digital Handheld Probe Ultrasonic Diagnostic Instrument is a compact, portable ultrasound imaging system designed for the examination of superficial tissues, small organs, muscles, and peripheral blood vessels. Featuring digital beamforming (DBF), real-time dynamic aperture imaging (RDA), dynamic apodization, and dynamic transmit and receive focusing, it provides versatile image acquisition and processing for point-of-care clinical applications.

The U20L supports five imaging modes and a selectable probe frequency range of 5.0–10.0 MHz, making it suitable for superficial ultrasound examinations requiring higher-frequency imaging. Its adjustable detection depth of 20–120 mm, up to 4× image magnification, and advanced digital image enhancement functions support detailed assessment of structures such as the thyroid, skin, muscles, and peripheral vessels.

With a lightweight handheld design, USB connectivity, multiple image storage formats, cine-loop playback, and DICOM transmission support, the U20L offers flexible deployment in hospitals, primary healthcare facilities, emergency departments, and bedside examination environments. Connection to compatible computers, tablets, and mobile devices also supports convenient image review and remote medical collaboration.

Performance Features

• Advanced Digital Imaging: Integrates digital beamforming (DBF), real-time dynamic aperture imaging (RDA), dynamic apodization, and dynamic transmit and receive focusing.

• High-Frequency Imaging: Provides six selectable frequencies from 5.0 to 10.0 MHz for superficial tissue, small-organ, muscle, and peripheral vascular examinations.

• Five Imaging Modes: Supports B, B+B, 4B, B+M, and M modes for flexible image presentation.

•  Adjustable Imaging Depth: Offers a detection depth range of 20–120 mm to accommodate different superficial examination requirements.

• Up to 4× Magnification: Provides eight levels of real-time B-mode magnification and local enlargement for real-time or frozen images.

• Advanced Image Processing: Features dynamic digital filtering, image enhancement, line correlation, frame correlation, linear interpolation, spatial-temporal filtering, and edge enhancement.

•  Flexible Image Adjustment: Includes an adjustable dynamic range of 0–100 dB, 256-level grayscale conversion, three display-speed settings, and eight-segment digital time-gain compensation (TGC).

•  Cine-Loop Playback: Supports cyclic storage of up to 512 image frames, with continuous and frame-by-frame playback.

•  Multiple Image Formats: Supports static image storage in BMP, JPG, PNG, TIF, and DCM formats, together with USB export and DICOM transmission.

• Multilingual Interface: Provides Chinese and English menu options, text annotations, measurement labels, patient information, and probe-position indicators.

• Portable, Energy-Efficient Design: Uses high-speed integrated circuits and low-voltage components in a compact handheld housing for flexible clinical deployment.

• Flexible Terminal Connectivity: Supports operation with compatible computers, laptops, tablets, and mobile devices, subject to interface and software compatibility.

Working Principle

The U20L uses an electronic array probe to transmit high-frequency ultrasound waves into superficial tissues and receive echoes reflected by different anatomical structures. The system processes these echoes to generate diagnostic ultrasound images.

Digital beamforming (DBF) coordinates signals received by the probe elements, while real-time dynamic aperture imaging (RDA), dynamic apodization (DRA), and dynamic transmit and receive focusing optimize signal processing across the imaging field. Numerical-control dynamic frequency scanning (DFS) supports selectable operating frequencies from 5.0 to 10.0 MHz.

The acquired signals undergo digital filtering, grayscale conversion, image enhancement, and other processing operations before being displayed. Adjustable time-gain compensation helps compensate for variations in echo intensity with depth, while magnification and image-freezing functions facilitate closer examination of specific structures.

The instrument also provides measurement tools, cine-loop review, and digital image storage. Supported USB transfer and DICOM communication facilitate image archiving and integration with compatible clinical information systems.

Technical Parameters

Parameter	Specification
Product Model	U20L
Instrument Type	All-digital handheld ultrasound diagnostic instrument
Structure	Portable handheld
Scanning Method	80-element electronic array probe; described as convex array in the supplied specifications
Probe Interface	USB
Preset Examination Modes	Small organs, blood vessels, muscles
Imaging Modes	B, B+B, 4B, B+M, M
Probe Frequency	5.0, 6.0, 7.0, 8.0, 9.0, 10.0 MHz
Detection Depth	20–120 mm, adjustable
Image Magnification	8 levels, up to 4×
Dynamic Range	0–100 dB, adjustable
Grayscale Conversion	256 levels
Display Speed	3 adjustable levels
Time-Gain Compensation	8-segment digital TGC
Image Preprocessing	Variable aperture, dynamic apodization, dynamic digital filtering
Image Postprocessing	Gamma correction, line correlation, frame correlation, dot-line correlation, linear interpolation, spatial-temporal filtering, edge enhancement
Pseudo-Color Processing	42 options
Cine-Loop Storage	Up to 512 frames
Static Image Formats	BMP, JPG, PNG, TIF, DCM
Data Transfer	USB storage device; DICOM transmission
User Interface	Chinese/English menu and input selection
Annotation Functions	Arrows, markers, text annotations, patient information, probe-position indicators
Body-Position Markers	140
Measurement Functions	Distance, circumference, area, volume, circular measurement, heart rate, and additional measurements depending on software version
Compatible Terminals	Computers, laptops, tablets, and mobile devices, subject to compatibility
Typical Applications	Superficial tissues, thyroid, peripheral blood vessels, muscles, and small organs

Note: The supplied specifications also mention obstetric measurements, including BPD, GS, CRL, FL, HL, OFD, TTD, and AC. Their availability should be confirmed for the specific U20L software version and configuration. The probe geometry should also be verified because the source identifies the scanning method as an electronic convex array despite the stated superficial imaging applications.

Application Scenarios

1. Thyroid and Small-Organ Examination

The U20L's 5–10 MHz frequency selection supports ultrasound examination of the thyroid and other superficial small organs, helping clinicians assess anatomical structures and tissue characteristics.

2. Peripheral Vascular Ultrasound

Supports examination of peripheral blood vessels for clinical assessment and can assist trained healthcare professionals during selected vascular access procedures.

3. Muscle and Soft-Tissue Imaging

Suitable for imaging superficial muscles, skin, and soft tissues in clinical departments requiring portable ultrasound assessment.

4. Bedside and Point-of-Care Diagnostics

Its handheld design enables convenient deployment in hospital wards, outpatient departments, and primary healthcare facilities for examinations near the patient.

5. Emergency and Critical Care

The portable instrument can support preliminary ultrasound assessments in emergency departments, intensive care units, ambulances, and field rescue environments, subject to clinical requirements and device configuration.

6. Ultrasound-Guided Procedures

May assist trained professionals with vascular localization, anesthesia-related procedures, PICC catheter placement, and selected image-guided interventions when appropriate for the probe and intended clinical use.

7. Primary Healthcare and Screening

Suitable for preliminary examinations in community clinics, physical examination departments, and other healthcare settings that benefit from portable diagnostic imaging.

8. Digital Medical Collaboration

USB export, supported image formats, and DICOM transmission facilitate digital image management and potential remote consultation through compatible medical systems.

U20L vs. U20C Handheld Ultrasound Scanner

Comparison Item	U20L	U20C
Primary Application	Superficial tissues, small organs, muscles, and peripheral vessels	Abdominal, obstetric, gynecological, and urological examinations
Probe Frequency	5.0–10.0 MHz	2.0–5.0 MHz
Adjustable Detection Depth	20–120 mm	90–240 mm
Imaging Modes	B, B+B, 4B, B+M, M	B, B+B, 4B, B+M, M
Probe Configuration	Specified as an 80-element electronic array; geometry requires confirmation	80-element electronic convex array
Image Magnification	Up to 4×	Up to 4×
Cine-Loop Storage	Up to 512 frames	Up to 512 frames
Image Storage	BMP, JPG, PNG, TIF, DCM	BMP, JPG, PNG, TIF, DCM
Portability	Handheld	Handheld
Typical Clinical Focus	High-frequency superficial imaging	Deeper abdominal and obstetric imaging

The U20L's higher-frequency range is generally suited to superficial structures, while the U20C's lower-frequency range supports greater penetration. Actual performance depends on probe design, tissue characteristics, and device configuration.

Frequently Asked Questions (FAQ)

Q1: What is the U20L handheld ultrasound scanner used for?

The U20L is designed for ultrasound examinations of superficial tissues, small organs, muscles, and peripheral blood vessels, including the thyroid and skin surface.

Q2: What frequencies does the U20L support?

It provides six selectable frequencies: 5.0, 6.0, 7.0, 8.0, 9.0, and 10.0 MHz.

Q3: What is the imaging depth of the U20L?

The specified detection depth is adjustable from 20 to 120 mm, supporting examinations of structures at different superficial tissue depths.

Q4: Which imaging modes are available?

The U20L supports B, B+B, 4B, B+M, and M imaging modes.

Q5: Can the U20L enlarge ultrasound images?

Yes. It provides eight levels of real-time B-mode magnification, with a maximum magnification of 4×. Local enlargement is also available for real-time and frozen images.

Q6: Does the U20L support image storage and playback?

Yes. It supports cine-loop storage of up to 512 frames, continuous playback, and frame-by-frame review. Static images can be saved in BMP, JPG, PNG, TIF, and DCM formats.

Q7: Can the U20L connect to a computer or mobile device?

The supplied specifications indicate support for compatible desktop computers, laptops, tablets, and mobile devices. Actual compatibility depends on the USB interface, operating system, and required software.

Q8: Can the U20L be used for vascular access guidance?

It may support vascular localization and selected ultrasound-guided procedures when the probe and system configuration are suitable. Procedures should be performed by appropriately trained healthcare professionals.

Q9: What is the difference between the U20L and U20C?

The U20L operates at 5–10 MHz and is intended primarily for superficial tissue and small-organ imaging. The U20C operates at 2–5 MHz and is oriented toward abdominal and obstetric applications requiring greater imaging depth.