Aloka Arietta 850
Aloka · Model Arietta 850
The ARIETTA 850 features a new OLED monitor and eFocusing technology that enhance the ultrasound image, allowing for more detailed observation. It also provides an extensive variety of imaging modalities such as Real-time Tissue Elastography and Strain Histogram Measurement, enabling a comprehensive examination. eFocusing Powered by the ARIETTA 850's advanced Variable Beamformer, eFocusing dynamically performs focusing throughout the depth of field. This transmission and reception technology significantly improves signal to noise ratio (the ratio of intensity between the received signal and background noise), eliminates the need to manually adjust focal zones, and achieves outstanding image clarity from near to far field with less patient-dependent variability. Active Backend Active Backend is the powerful image processing engine developed to realize fast, complex arithmetic computations, providing imaging with outstanding definition. New post processing features include: Low Echo Reduction: Reduces noise in low echo areas, leaving the brightest areas unchanged. Echo Enhancement: Enhances the contrast of the entire ultrasound image by reducing noise and enhancing echoes in the brightest and darkest areas. OLED Monitor The ARIETTA 850 comes equipped with a 22 inch wide OLED (Organic Light Emitting Diode) Monitor for an optimum image display. Without requiring backlighting to function, the OLED Monitor displays true black, allowing a previously unattainable contrast resolution to be achieved. It is the ideal monitor choice for ultrasound, producing the highest quality grayscale display. Tissue Harmonic Imaging (THI) When ultrasound waves are propagated through tissue, distortion occurs and harmonic components are generated. THI uses these components to build an image of the targeted area. Advantages of harmonic imaging include improved resolution, improved signal-to-noise ratio, and reduced artifacts. The ARIETTA 850 comes equipped with High Definition (HdT) Tissue Harmonic Imaging. HdT mode with the GF-UCT180 scope has comparable sensitivity to B mode imaging on the ProSound F75 at 7.5MHz, but with a higher resolution.
Key tips
- ·Never bypass a radiation interlock to "just get the image" - this is one of the few true zero-tolerance rules in BMET work.
- ·Trend image-quality phantom results over time - drift shows up before an outright failure does.
- ·Portable/mobile units take real physical abuse from transport - check wheel locks and cable strain reliefs more often than fixed units.
Typical Failure Modes
Compiled for this model from its own documentation and established engineering knowledge for this equipment class - not from a verified service record. Confirm against the manufacturer's service manual.
Poor 2D image quality across multiple probes
HighSymptoms: Noisy, low-contrast or non-uniform image, missing sector, drop-out that follows the system not the probe.
Root cause: Front-end / beamformer board fault, a probe-port (connector) board fault, or a system-board fault.
Transducer not recognised / probe-port fault
MediumSymptoms: A probe works on one port but not another, or is not detected at all.
Root cause: Worn probe-port connector or a scan-connector board fault.
Will not boot / intermittent shutdown
HighSymptoms: Dead system, hangs at boot, or powers off under load.
Root cause: Power supply / DC converter, the system battery, or a system-board fault.
Control panel / touchscreen or monitor fault
MediumSymptoms: Unresponsive TGC sliders or keys, distorted or blank display.
Root cause: Control-panel board, touchscreen, or the monitor.
Overheating / loud cooling fan
LowSymptoms: Thermal-shutdown warning, fan roar, hot exhaust.
Root cause: Failed or dust-clogged cooling fan or blocked air path.
DICOM / network / storage fault
LowSymptoms: Studies will not send to PACS, images will not archive, worklist empty.
Root cause: Network configuration or a storage-drive fault.
Serviceable Parts & Consumables
Serviceable items for this model, compiled from its documentation and engineering knowledge for this equipment class. Service class and relative cost are estimates, not manufacturer figures; no part numbers are given. Confirm intervals and pricing against the manufacturer.
Front-end / beamformer board
Class Major service partRel. cost $$$$R&R Difficult
Probe-port / scan-connector board
Class Major service partRel. cost $$$R&R Difficult
Power supply / DC converter
Class Major service partRel. cost $$$R&R Difficult
Control-panel / touchscreen assembly
Class Major service partRel. cost $$$R&R Moderate
Cooling fan
Class Major service partRel. cost $R&R Moderate
System hard drive
Class Major service partRel. cost $$R&R Moderate
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Front-end / beamformer board | Major service part | $$$$ | Difficult |
| Probe-port / scan-connector board | Major service part | $$$ | Difficult |
| Power supply / DC converter | Major service part | $$$ | Difficult |
| Control-panel / touchscreen assembly | Major service part | $$$ | Moderate |
| Cooling fan | Major service part | $ | Moderate |
| System hard drive | Major service part | $$ | Moderate |
Relative cost: $ lowest · $$$$ highest service-part cost for this equipment class. Not a price.
PM Checklist
Preventive-maintenance tasks typical of this equipment class. Perform to the manufacturer's procedure and your facility's policy - this is general reference, not a schedule for this specific unit.
- ·Daily QC per modality: image-quality phantom test
- ·Tube and detector inspection
- ·Annual state-required radiation safety survey
- ·Vendor-scheduled preventive maintenance
Troubleshooting Approach
A starting sequence for this model, compiled from its documentation and engineering knowledge for this equipment class. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Poor image quality or a probe not recognised
- Try the probe on a second port and a known-good probe on the suspect port.
- Wipe off all gel, inspect the lens, and scan a phantom or your own forearm.
- Inspect the probe-port connectors for bent pins or debris.
- Run any built-in front-end / channel diagnostics.
- Replace the probe-port board or front-end board as isolated.
Symptom: Will not boot or shuts down
- Confirm mains and the on/off sequence per the manual.
- Check the power-supply / DC-converter outputs.
- Note any boot / POST beep or code.
- Reseat the system boards.
- Refer the power supply or system board as isolated.
Typical Location
Where this class of equipment is typically deployed - general reference, not this unit's own placement record.
- Radiology / Imaging department
- Emergency Department (portable units)
- Operating Room (C-arms)
- Cath lab
- Bedside ICU (portable X-ray)
Documents & Manuals
No documents available for this device yet.
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