Mediso NanoScan PET/MRI
Mediso · Model NanoScan PET/MRI
No compromise in imaging performance1: the negligible fringe field from the permanent magnet ensures superior performance of PET subsystem 700 µm spatial resolution with Tera-Tomo 3D PET reconstruction engine with Full Detector Modeling and Attenuation2/Scatter Correction in objects Absolute quantification accuracy over 97% Versatile soft tissue contrast for the best Volume of Interest definitions Determine the volume of tumors: for characterizing the size, vascularization and heterogeneity Detailed structural information in the brain reveals exact distribution of neurological PET tracers Reduced radiation exposure of the animals Anatomical information obtained with non-ionizing radiation (especially important for treatment models) Compact and easy-to-use design does not require special training/education There is no need for long calibrations after start-up There is no waiting time between PET and MRI acquisitions Quick and easy installation Superior PET detector characteristics: Physical performance matches animal imaging performance High-density, ultra-small detectors in tight packing with finest LYSO detector elements in the industry with smallest pitch Increased crystal thickness for highest sensitivity Measure even the finest details Tera-Tomo 3D PET reconstruction engine brings PET resolution close to the physical limits with outstanding quantification and better signal recovery and signal-to-noise ratio Features Monte Carlo system matrix modeling and Depth of Interaction correction; incorporates attenuation1, scatter, positron range, random and dead time corrections Reconstruction running on multiple GPUs (Graphical Processing Units) delivering shorter computational time Perform Acquisition and Reconstruction simultaneously with the powerful workstations including DICOM server and multi-modality display and analysis suite Highest ever resolution in PET State-of-the-art Tera-Tomo 3D PET image reconstruction engine Extremely fast workflow of data handling and image processing Plug-and-publish: totally shielded, cryogen-free and maintenance-free MRI, no room modifications or shielding needed, just a standard public voltage plug Silent operation, ideal for awake animal brain studies Easy installation, compact size: The whole system including PDU and spectrometer rack fits in any biological lab and needs 2 less than 3 m of lab floor space One-click MultiCell animal anesthesia / imaging bed support system
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
Failure patterns typical of this equipment class - general BMET reference, not verified against this exact unit's own service history unless flagged. Severity is a category-level estimate.
Helium / cryogen pressure fault
HighSymptoms: Cold-head fault, quench alarm.
Root cause: Cold-head compressor wear or helium loss.
Gradient coil overheating
HighSymptoms: Sequence abort, thermal alarm.
Root cause: Cooling loop restriction or coil wear.
RF coil element failure
MediumSymptoms: Signal dropout, noise-band image artifact.
Root cause: Coil element or cable damage.
Recon / system software hang
LowSymptoms: Frozen console, acquisition timeout.
Root cause: Workstation or RAID degradation.
Serviceable Parts & Consumables
The parts a BMET typically services on this class of equipment. Service class and relative cost are general engineering estimates for the category, not figures from this unit's documentation. Part numbers appear only when pulled from this unit's own service manual. Always confirm intervals and pricing against the manufacturer.
Gradient coil cooling pump
Class Periodic replacementRel. cost $$$R&R Difficult
Workstation RAID / GPU
Class Periodic replacementRel. cost $$$R&R Difficult
RF receive coil
Most-replaced patient-facing component.
Class Major service partRel. cost $$$$R&R Moderate
Cold head / compressor
Critical for magnet cooling.
Class Major service partRel. cost $$$$R&R Expert-level
| Part | Service class | Relative cost | R&R difficulty |
|---|---|---|---|
| Gradient coil cooling pump | Periodic replacement | $$$ | Difficult |
| Workstation RAID / GPU | Periodic replacement | $$$ | Difficult |
| RF receive coil Most-replaced patient-facing component. | Major service part | $$$$ | Moderate |
| Cold head / compressor Critical for magnet cooling. | Major service part | $$$$ | Expert-level |
Relative cost: $ lowest · $$$$ 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 structured starting point derived from the failure modes above. Follow the manufacturer's service documentation for the actual procedure.
Symptom: Helium / cryogen pressure fault
- Confirm the presentation - typically cold-head fault, quench alarm - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: cold-head compressor wear or helium loss.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the rF receive coil per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
Symptom: Gradient coil overheating
- Confirm the presentation - typically sequence abort, thermal alarm - and note the exact alarm or message and the conditions when it occurs.
- Check the most likely cause first: cooling loop restriction or coil wear.
- Isolate the affected subsystem using the manufacturer's functional check or self-test, where one is provided.
- If the fault is confirmed and not a field adjustment, service or replace the cold head / compressor per the manufacturer's service documentation.
- Return the device to service only after the manufacturer's functional and applicable electrical-safety checks pass.
- Record the findings, any parts used, and the verification results in the maintenance history.
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
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