Model note · DEXA Scanner

GE HealthCare Lunar iDXA

Name: GE HealthCare Lunar iDXA
Brand: GE HealthCare Lunar

The Lunar iDXA is GE's full size dual energy X-ray absorptiometry scanner for bone mineral density and whole body composition, cleared in 2005 as a higher resolution successor to the Prodigy for larger patients. A narrow angle fan beam and a 64 channel detector scan the patient on a table that holds up to 204 kg, and the enCORE software on a standard PC drives the scanner, runs daily QA with a calibration block and calculates BMD, body composition, visceral fat and fracture risk outputs.

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The model

Maker, model and type.

Maker: GE Medical Systems Ultrasound & Primary Care Diagnostics, LLC (GE HealthCare)
Model: Lunar iDXA
Device type: DEXA Scanner
Main document: Open the public document

Key specifications

What the public record says.

Item	Value	Source
X-ray generator	100 kV, 2.5 mA maximum continuous; tube head assembly PN 40782; shortest exposure time 2 s	Source
Detector and beam	Narrow angle fan beam with multi view image reconstruction; 64 channel multi element detector, 0.8 mm pitch, 1.2 to 1.6 lp/mm	Source
Geometry	Focal spot to detector 71.5 cm; focal spot to pad surface 24.5 cm	Source
Scanner table	287 x 131 x 125 cm (L x W x H); about 360 kg; maximum patient 204 kg (450 lb)	Source
Power	100 to 127 or 200 to 240 VAC, 50/60 Hz, 750 VA; dedicated circuit recommended; about 40 W idle and 525 W while scanning	Source
Operating environment	18 to 27 C; 20 to 80% RH non condensing; not above 3,000 m; field from MRI under 1 gauss	Source
Electrical class	Class I, type B applied part, IPX0, continuous operation	Source
Expected precision	About 1.0% CV (0.010 g/cm2) for AP spine, dual femur and total body BMD	Source
Room size	Recommended 4.0 x 3.35 m; small room minimum 3.2 x 3.35 m with isolation transformer	Source
FDA clearance	K052581, 20 October 2005, 21 CFR 892.1170, product code KGI, Class II; predicate Prodigy	Source

Recalls

Known FDA recalls.

Z-1709-20202019-12-03
Control panel fault could stop the start button releasing and contribute to accidental radiation (also Z-1710 to Z-1712-2020 for iDXA with enCORE v16 to v18).
FDA record
Z-0600-20102009-02-01
enCORE 12.0 to 13.1 did not properly pre indicate technique factors before a patient scan.
FDA record

Safety

Safety warnings from the record.

Use the red emergency stop on the scanner arm to halt motion and X-rays in an emergency, but not as a routine way to stop scans. Source
Do not look into the class 2 positioning laser and keep its aperture under the arm away from the patient's eyes. Source
Check pregnancy status with the referring doctor before scanning anyone who is or may be pregnant. Source
Do not service electrical parts while the system is on, as high voltage is used to produce X-rays; do not generate X-rays from remote software. Source
Wait 72 hours after a radiographic contrast study before scanning, as contrast can corrupt point typing. Source

Sources

Where this note comes from.

Not covered: The only full manual reachable was GE's Norwegian enCORE v18 user manual, translated here; the English operator and pre-installation manuals and GE spec sheets on gehealthcare.com could not be opened. The service manual is not public, so there are no internal error code lists, part numbers beyond the tube head, or calibration tolerances. The manufacturerUrl is GE's bone and metabolic health page, which mentions the Lunar line but did not render a separate iDXA product entry. openFDA MAUDE returned no reports filed under an iDXA brand name, so no trend is given. Newer GE documents may state a different table limit; this note uses the 204 kg in the v18 manual.

BMEssentia knowledge drafted from public information, reviewed by Hasan Khaled Ismail on 2026-10-24. Always follow the manufacturer's instructions for use and service manual.

DEXA Scanner