MRI AND CT SHIELDED PHYSICAL LAYER
Non-Magnetic SFP Cages and High-Speed Optical for MRI and CT Imaging
Non-magnetic phosphor bronze/brass SFP cages with relative magnetic permeability ur approx 1.0, paired with 10G/40G fiber transceivers engineered to eliminate susceptibility artifacts in 1.5T/3.0T MRI and maintain raw projection streams across high-speed CT slip-rings.
Trxcom Non-Magnetic Physical-Layer Design
Ferromagnetic materials present severe projectile hazards in 1.5T/3.0T MRI rooms and distort static magnetic field homogeneity (Delta-B0), producing diagnostic image ghosting. Trxcom manufactures 100% non-magnetic SFP/SFP+ cages (ur approx 1.0) using copper-nickel-tin or phosphor-bronze alloys with non-magnetic gold-over-copper plating. For rotating multi-slice CT gantries, Trxcom delivers fiber links sustaining 40 Gbps through optical rotary joints without mechanical contact wear.
ur ~ 1.000
Relative Permeability
Non-ferromagnetic cage housing delivering zero B0 field distortion in 1.5T/3.0T/7.0T bores.
> 70 dB
RF Shielding
Complete RF containment blocking 64MHz/128MHz Larmor resonance frequency leakage.
40 Gbps
Slip-Ring Optical Pipe
Continuous raw slice projection data from multi-slice CT rotating detectors at 200+ RPM.
Zero Projectile
Magnetic Safety
Guaranteed zero attraction force inside the fringe field of ultra-high field MRI scanners.
SELECTION MATRIX FOR RADIOLOGY HARDWARE ARCHITECTS
Medical Imaging Optical and Shielding Portfolio Lineup
Typical reference specifications tested under standardized clinical imaging test setups. Validated under ISO 13485:2016.
| Part Number Series | Product Description | Magnetic Permeability (ur) | RF Shielding Attenuation | Max Data Rate | Mechanical / Plating | Target Diagnostic System |
|---|---|---|---|---|---|---|
| TRX-CAGE-NONMAG-1X1 | 1x1 Non-Mag SFP+ Cage | ur <= 1.002 | > 72 dB @ 128MHz | Up to 16 Gbps | Phosphor Bronze / Au over Cu | 1.5T/3.0T MRI RF Receiver Coils |
| TRX-CAGE-NONMAG-1X2 | 1x2 Ganged Non-Mag Cage | ur <= 1.002 | > 70 dB @ 300MHz | Up to 32 Gbps/port | Cu-Ni-Sn / Non-Mag Au Flash | 7.0T Ultra-High Field MRI & PET-MRI |
| TRX-QSFP-40G-CT-SR4 | 40G Gantry Ruggedized QSFP+ | Standard Gantry (Outside Bore) | Heavy-Duty Cast Die | 41.25 Gbps | Sustained 20G Centrifugal Hold | 64-256 Slice CT Rotating Slip-Rings |
| TRX-SFP-10G-XRAY-BI | 10G BIDI Simplex LC Optics | Low Susceptibility | Integrated EMI Ring | 10.3125 Gbps | Low-Power (< 0.75W Typical) | Digital Flat Panel DR X-Ray Detectors |
* MRI components certified for magnetic displacement force and image artifact testing per ASTM F2052 and ASTM F2119. Zero Susceptibility Artifact Guarantee
SELECTION MATRIX FOR BIOMEDICAL EMBEDDED ENGINEERS
2xMOPP Medical MagJack and Transformer Lineup
Typical reference specifications tested under standard clinical testing procedures. Full compliance documentation packs supplied.
| Part Number Series | Component Type | Hi-Pot Dielectric Rating | Patient Leakage Current | Creepage Spacing | Speed Class | Target Clinical System |
|---|---|---|---|---|---|---|
| TRX-MED-5001-1G | Integrated MagJack | 5,000 V AC (60s) | < 8 uA @ 264V AC | >= 8.2 mm | 1000Base-T | Bedside Multi-parameter Patient Monitors |
| TRX-MED-5002-2.5G | Multi-Gig MagJack | 4,500 V AC (60s) | < 10 uA @ 264V AC | >= 8.0 mm | 2.5GBase-T | Next-Gen High-Data Telemetry Gateways |
| TRX-MED-100TX-LP | Low-Profile MagJack (11.5mm) | 4,000 V AC (60s) | < 10 uA @ 264V AC | >= 8.0 mm | 100Base-TX | Portable Defibrillators & Infusion Pumps |
| TRX-MED-TRANS-5000 | Discrete 24-Pin SMD | 5,000 V AC (60s) | < 5 uA @ 264V AC | >= 8.5 mm | 10/100/1000Base-T | Dialysis Workstations & Vent Monitors |
* Fully compliant with IEC 60601-1 3rd/4th Edition 2xMOPP for CF-type patient connections. 100% Factory Production Hi-Pot Tested
PHYSICAL LAYER COMPLIANCE FAQ
Radiology Hardware Architecture Questions Answered
Q1
Why is relative magnetic permeability (μr) critical for SFP cages deployed inside MRI scan rooms?
In an MRI bore, the static magnetic field (B0) requires extreme homogeneity within fractions of a part per million (ppm). Commercial cages made from ferromagnetic alloys create local magnetic susceptibility gradients, distorting B0 and generating severe geometric artifacts, signal loss, and image blur in diagnostic scans. Furthermore, magnetic materials experience violent projectile pull forces. Trxcom non-magnetic cages achieve μr ≤ 1.002, matching the magnetic permeability of biological tissue and air, which completely prevents artifacts and projectile safety risks.
Q2
How do Trxcom optical transceivers sustain high-speed data transfer across CT gantry slip rings?
High-slice CT scanners spin large detector arrays at over 200 RPM, producing up to 20G centrifugal forces. Mechanical contact brushes suffer contact bounce, wear particles, and limited bandwidth. Trxcom 40G QSFP+ transceivers interface directly with contactless optical rotary joints (FORJ) or wireless optical links, providing reliable multi-gigabit throughput without contact degradation, electrical spark noise, or mechanical maintenance requirements.
VALIDATE MRI SHIELDING & CT ROTARY INTERFACES
Engineer Artifact-Free Diagnostic Systems with Trxcom
Request evaluation samples of non-magnetic SFP cages and high-throughput CT optical modules. Receive ASTM F2052 magnetic displacement and ASTM F2119 artifact test reports for FDA 510(k) submission.
ASTM F2052 Tested · Non-Magnetic Traceability · Custom Mechanical Fit Available
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