GE HealthCare Discovery CT 705 HD (2013)

This unit has none in its present condition, and that belongs at the top of this section rather than within it. The tube has failed, the system cannot scan, and it must not be used on a patient or returned to clinical service until a replacement tube is fitted and the scanner is fully calibrated, verified and recommissioned. Medigear.uk will not supply it against any clinical expectation.

The platform, once retubed, is a 64-slice high-definition scanner built around the Gemstone detector, GE HealthCare HealthCare's exclusive garnet scintillator delivering up to 230-micron spatial resolution. Where the Gemstone Spectral Imaging licence is present it supports single-source dual-energy work through fast kV switching, generating monoenergetic images, material density data and virtual non-contrast series. That description sets out what a completed retube would produce rather than what this unit currently offers.

Buyers are most likely to be imaging service providers, refurbishers and hospitals already operating this platform. For a service running a CT750 HD, this unit is either a spare-parts reserve or a second scanner at a fraction of working-unit cost once retubed. Holding a donor on site also removes the lead time that ordering individual components brings when a working scanner goes down.

Anyone taking the retube route should price the tube first and plan the recommissioning and regulatory steps alongside it. Medigear.uk provides the licence list and component condition in writing so the decision is made on figures rather than optimism, and will say plainly where buying a working scanner is the better answer.

A Consumable, Not a Catastrophe

CT tubes have a defined working life measured in scan seconds and accumulated mAs, and replacement is expected during a scanner's service life. Units of this platform routinely appear with documented replacement tubes fitted years after manufacture. A dead tube is a known event with a known remedy rather than the end of a machine.

The Licences Survive Intact

GE HealthCare CT software options are separately licensed and carry substantial value apart from the hardware. Gemstone Spectral Imaging, ASiR, Veo, CardIQ and similar options are what make a scanner of this class capable, and a tube failure does not touch any of them.

The Gemstone Detector Is Untouched

The detector is GE HealthCare HealthCare's exclusive garnet scintillator, the first new CT scintillator material in two decades, delivering up to 230-micron resolution across 64 rows and 912 channels. It is entirely independent of the tube and is among the most valuable single components on the scanner.

More Than One Tube Route

The platform shipped with GE HealthCare HealthCare's Performix HD 8 MHU tube, and market listings for this model show both Performix replacements and third-party alternatives such as the Perseus MX fitted in service. More than one supply route generally means better pricing and shorter lead times.

Priced as Arithmetic, Not Optimism

Purchase price, plus tube, plus installation labour, plus calibration and recommissioning, against the cost of a comparable working unit with a similar licence set. Medigear.uk supplies what is needed to complete that sum rather than encouraging a decision made on hope.

A Parts Route as Well

For some buyers, breaking the unit is the better answer. Detector, generator, gantry components, table, console and workstation all fail independently on working scanners and cost significantly to replace. Component condition is reported individually so either route can be assessed properly.

Recommissioning Set Out Up Front

Fitting a tube is the start rather than the end. Full calibration, image quality verification and acceptance testing follow, alongside notification, radiation protection adviser appointment, local rules and a critical examination. These are explained at enquiry rather than left to be discovered.

No Misrepresentation of Capability

Medigear.uk lists this as a failed-tube unit for retube or parts and will not offer it as a working scanner. A buyer needing a scanning system is better served by a working unit, and that is the conversation Medigear.uk would rather have.

X-Ray Tube: Failed

The tube has failed and the system cannot scan. It is offered for retube or component recovery, not as a working scanner.

Clinical Status: Not for Patient Use

The unit must not be used on a patient or returned to clinical service until retubed, calibrated, verified and recommissioned.

Gemstone Detector

GE HealthCare HealthCare's exclusive garnet scintillator detector, delivering up to 230-micron spatial resolution across 64 rows and 912 channels, independent of the tube.

V-Res Detector Coverage

The V-Res detector provides 40 mm of coverage, supporting up to 128 slices per rotation through overlapped reconstruction on the working platform.

100 kW Generator

The generator is rated at 100 kW and is independent of the tube. Condition is assessed and reported separately.

Original Tube Specification

The platform was supplied with a Performix HD 8 MHU tube. Replacement options including third-party alternatives are established before purchase.

Software Licence List

Fitted licences may include Gemstone Spectral Imaging, ASiR, Veo, CardIQ and numerous workflow options. The full list is supplied in writing.

Gemstone Spectral Imaging

Where licensed, GE HealthCare HealthCare's single-source dual-energy capability using fast kV switching between 80 and 140 kV. Presence on this unit is confirmed rather than assumed.

Console and Workstation

Operator console and workstation are assessed independently, since both are recoverable and both carry value on a donor unit.

Gantry and Patient Table

Gantry components and the patient table are unaffected by tube failure and are assessed as recoverable assets.

Tube History Records

Scan seconds and accumulated mAs at failure are obtained where available, since they indicate how the tube was used and how the scanner was worked.

Service History

Whatever service history and fault documentation accompany the unit are supplied, along with a written condition statement.

Retube Cost Guidance

Medigear.uk can help establish current tube options, availability and cost so the retube route can be priced before commitment.

Recommissioning Requirements

Full calibration, image quality verification and acceptance testing are required after retubing and before any clinical use.

Radiation Compliance Obligations

Notification, radiation protection adviser appointment, local rules, employer procedures and critical examination all apply to returning this scanner to service.

Installation and Access

A CT scanner requires assessed room access, floor loading, power and cooling. These are established before any move is scheduled.

Written Condition Statement

A written statement covering the tube failure and the assessed condition of all remaining components is issued before purchase.

This 2013 GE HealthCare Discovery CT750 HD has a failed X-ray tube and is offered as a retube project or for component recovery, not as a working scanner, and it must not return to clinical service until retubed, calibrated, verified and recommissioned. What distinguishes it from a write-off is that CT tubes are consumables with a defined working life, replacement is expected during a scanner's service life, and both GE HealthCare Performix and third-party alternatives are available. Everything else survives: the Gemstone garnet detector at up to 230-micron resolution, the 100 kW generator, gantry, table, console and workstation, and critically the software licences, which on this platform can include Gemstone Spectral Imaging, ASiR and Veo. Medigear.uk supplies the fitted licence list, component condition and tube history in writing so the retube can be priced against a working unit. Contact Medigear.uk for specifications, procurement assistance, or expert consultation.