CT Tube Replacement

CT Tube Replacement for GE LightSpeed, BrightSpeed and VCT

A CT x-ray tube is a consumable with a service life, and it almost always warns you before it goes. Below are the failures we are called out to most, and what each one costs you if it waits.

What a Tube Replacement Covers

Diagnosis first, then the tube, the recalibration and the image-quality QA. You get the QA documentation for your records.

GE Platforms We Work

LightSpeed, BrightSpeed and LightSpeed VCT. FDM services GE CT systems specifically.

Diagnosed Before Anything Is Ordered

Arcing and mA faults can trace upstream to the generator or cabling. We confirm the tube is the fault before you buy one.

Faults That Take The Room Down

These stop scanning on the day they happen. Each one is a call now, not a Monday call.

Hard-Down Tube Faults

These stop the room. If the console is reporting a numbered high-voltage fault, our CT service and repair page covers the wider chain.

Arcing that aborts a scan
A little arcing is normal and the system tolerates it. When it starts killing exposures mid-series, the tube's vacuum or insulation is going.
Filament open, no exposure
The system arms and produces nothing at all. There is no workaround and no partial mode, so the room stops.
60-0313 and high-voltage faults
The console reports the HV chain cannot sustain the requested technique. It can be the tube or it can be upstream, and guessing is expensive.
Housing oil seepage or thermal trips
Oil weeping from the housing, or a thermal switch dropping the system out of scan. This is interlock territory, not a watch-and-see item.
Talk to a CT Engineer CT Service Contracts

Faults That Warn You First

These do not stop the room on the day they start, which is exactly why they get ignored until they do.
GE CT gantry with covers removed showing the x-ray tube housing, coolant lines and high-voltage connections during a tube replacement

The Warnings Worth Acting On

Catching a tube here rather than at failure is the difference between a scheduled swap and an unplanned one. After any tube change the system needs recalibration and image-quality QA.

Anode bearing rumble
A hum or grind from the gantry that tracks with rotor spin-up. Worn bearings add friction and heat and they do not recover.
mA swings at a fixed technique
Tungsten comes off the filament and anode over the tube's life and unbalances it electrically. It is usually the precursor to sustained arcing.
Cooldown waits between series
The scanner makes you wait on heat units where it used to run back to back. Throughput slips before the tube actually fails.
Rings that survive an air cal
Rings normally mean a detector out of calibration, so a fresh air cal clears them. When it does not, look at tube output.
Schedule a Tube Assessment CT Calibration

How the Job Runs

Confirm the fault, quote the tube and the labour separately, schedule around your clinical day, then recalibrate and run image-quality QA before the room goes back.

Why Facilities Call Us

25+ years on GE imaging hardware, veteran-owned, and an independent alternative to an OEM contract. We diagnose before we sell you a tube.

Where We Work

On-site across eleven states, Tennessee through Florida. See our service coverage.

Related CT Services

CT Scanner Calibration - required after every tube swap

CT Replacement Parts & Installation

CT Scanner Service & Repair

CT Scanner Troubleshooting

Frequently Asked Questions

The classic signs are arcing that interrupts a scan, a rumble from the anode bearings, tube current that swings at a fixed technique, and cooldown waits that were not there before. Any one of those can also trace upstream to the generator or high-voltage cabling, which is why we diagnose before quoting a tube. Call 615-479-5572.

Yes. A new tube does not produce identical output to the one it replaced, so Hounsfield unit values drift until the system is recalibrated. Skipping it is the most common reason a facility chases image-quality complaints for weeks after an otherwise clean tube swap. We recalibrate and run image-quality QA as part of the job.

Most replacements are a single-day job on-site including the calibration and QA afterwards. The longer variable is usually tube availability rather than labour, so identifying a failing tube early gives you more control over the schedule.

No. A CT x-ray tube is a sealed, evacuated assembly and its wear mechanisms are not field-repairable. The real decision is between a new tube and a refurbished one.

Either. We can source and supply it, or install one you have already procured. If a system is near end of life it may make more sense to look at a refurbished system or upgrade than to put a new tube in it, and we will say so.

That is a clinical and financial judgement rather than a fixed number. What we can say is that arcing does not improve on its own, and that an unplanned tube failure costs more than a scheduled one.

GE LightSpeed, BrightSpeed and LightSpeed VCT. FDM Enterprises services GE CT systems specifically. For MRI we cover GE and Siemens.

No. FDM Enterprises is an independent service organisation. We also offer CT full service contracts that name the tube explicitly.