Authorised Indian Distributor
Saxsons Group
New Delhi, India · Since 1997
Ge-68 Line SourcePET / PET-CT Normalization
Precision Ge-68/Ga-68 cylindrical line sources for 2D and 3D normalization of PET and PET-CT scanners. Double-layer stainless steel, argon-welded sealed ends, ±5% uniformity — providing long-lived, stable normalization performance across the PET scanner's clinical life.
Key Features
- Double-layer stainless steel tube construction — maximum sealed source integrity
- Argon-welded sealed ends — zero activity leakage risk
- Uniformly filled radioactive element — ±5% uniformity along entire length
- QC verified with 5mm scanning intervals across full source length
- Laser-marked source information: product code, isotope, activity, serial number, date
All Features
- Double-layer stainless steel tube construction — maximum sealed source integrity
- Argon-welded sealed ends — zero activity leakage risk
- Uniformly filled radioactive element — ±5% uniformity along entire length
- QC verified with 5mm scanning intervals across full source length
- Laser-marked source information: product code, isotope, activity, serial number, date
- Compatible with 2D and 3D PET and PET-CT normalization protocols
- QC results available on request with PET-CT scanner verification images
- 271-day half-life — predictable activity decay for multi-year normalization use
- Suitable for all major clinical PET and PET-CT scanner platforms
- AERB-compliant sealed source with transport documentation
- Full traceability via laser marking — no labelling loss during handling
- Available in sizes for different scanner bore and normalization geometries
Technical Specifications
| Source radionuclide | Germanium-68 (Ge-68) / Gallium-68 (Ga-68) — secular equilibrium |
| Half-life | 270.95 days (Ge-68 parent) |
| Photon emission | 511 keV annihilation photons (from Ga-68 daughter positron) |
| Tube material | Double-layer stainless steel |
| End closure | Argon welding — hermetically sealed |
| Uniformity | ±5% along source length (QC at 5mm intervals) |
| Traceability marking | Laser-marked: product code, isotope, activity, S/N, date |
| Verification | PET-CT scanner image QC; test results available on request |
| Compatible systems | All major clinical PET / PET-CT scanner platforms |
| Applications | 2D normalization; 3D normalization; PET scanner QA imaging |
| AERB classification | Sealed source; AERB licence and import documentation provided |
Applications
PET normalization — the calibration behind every quantitative PET scan
PET Scanner 3D Normalization
3D PET normalization uses line sources rotated around the scanner FOV to characterise detector sensitivity. Ge-68 line sources deliver stable, reproducible 511 keV reference counts for accurate normalization files.
2D PET Normalization
Older 2D PET systems requiring septa-based normalization use line source rotation. Ge-68 long half-life means one source set survives scanner software upgrades and detector map updates.
PET-CT Scanner QA Imaging
Cylindrical phantom imaging for PET uniformity, sensitivity and spatial resolution QA. Documented scanner performance supports AERB inspection compliance and NABH accreditation.
Sensitivity and Resolution Testing
NEMA NU-2 sensitivity and resolution measurements using line sources in specified phantoms. Establishes baseline PET performance for acceptance testing and post-service verification.
Dose Calibrator Verification
Ge-68 point sources verify dose calibrator Ge-68/Ga-68 calibration factor, essential for PET departments dispensing Ga-68 radiopharmaceuticals and needing NIST-traceable dose calibration.
Scanner Upgrade Validation
Post-upgrade normalization re-acquisition with the same Ge-68 source provides a consistent reference for before-after comparison, validating the upgrade did not degrade scanner performance.
Why Ge-68 Line Source?
The source activity is verified at 5mm intervals along the full length before dispatch. Non-uniformity in the line source propagates into the normalization file and degrades PET image quality — ±5% uniformity is the accepted clinical standard.
Ge-68's 271-day half-life allows the same source to be used for 2–3 years with predictable activity correction. Contrast to F-18 or Ga-68 sources that decay in hours — Ge-68 is the only practical choice for routine normalization.
Double-wall stainless steel with argon-welded ends and regular leak test documentation. A sealed Ge-68 source handled correctly in a clinical environment presents no contamination hazard and no wipe test failures at AERB inspection.
Catalogs & Resources
Manufacturer product page. Contact Saxsons for AERB import licensing, scanner-specific sizing and pricing.
Ge-68 Line Source
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FAQ
Ge-68 PET normalisation source — questions we hear from Indian nuclear-medicine teams
What PET normalisation actually corrects, why Ge-68 is picked over F-18 for the source, what the double-walled + argon-welded construction solves for scanner safety, and what ±5 % uniformity means for the normalisation quality.
Q.What is PET / PET-CT normalisation and why does it need a Ge-68 line source?
A PET scanner has thousands of detector crystals arranged in rings. Every crystal has a slightly different efficiency, and each line-of-response (crystal pair) has to be corrected for that individual sensitivity before the image is reconstructed — otherwise the reconstructed activity map is wrong. Normalisation is the calibration procedure that measures each line-of-response sensitivity. It needs a source with known geometry and long half-life that fills the scanner FOV — a Ge-68 cylindrical line source is the standard.
Q.Why Ge-68 and not F-18 for the normalisation source?
F-18 has a 110-minute half-life — an F-18 source would decay to unusable activity mid-scan, and every normalisation would need a freshly-produced source. Ge-68 has a 271-day half-life and decays through Ga-68 (which emits the same 511 keV annihilation photons as F-18 clinical tracers), so the calibration reads as directly applicable to the clinical PET signal. The same source lasts across the scanner's multi-year calibration cycle.
Q.What does the double-layer stainless-steel + argon-welded construction solve?
The source has to sit inside the scanner FOV for extended normalisation acquisitions, sometimes repeatedly across the calibration cycle. A single-walled source with pressure-fitted ends is a leak risk — Ga-68 gas escape from an aged source contaminates the scanner and forces an unscheduled service. Double-layer stainless steel with argon-welded sealed ends is the reference construction for a sealed radioactive line source rated for the ~10 year working life the Ga-68 activity remains useful.
Q.What ±5 % uniformity means for the normalisation quality
A normalisation measurement can only be as uniform as the source. ±5 % uniformity across the line source means the correction factors developed from the normalisation are accurate to ±5 % — well within the AAPM TG-126 acceptance range for PET normalisation. A poorly-uniform line source degrades the normalisation and shows up as ring artefacts on clinical PET images.
Q.How is the Ge-68 line source supplied and licensed in India?
Distributed across India by Saxsons Group as a sealed radioactive source under AERB sealed-source import licensing. Supply covers the source, activity certificate, NEMA NU-2 normalisation workflow support, scanner-specific FOV sizing, transport chain and end-of-life return-and-disposal.
Ge-68 Line Source supplier in India — Saxsons Group
Saxsons Group has supplied nuclear medicine equipment to over 1,000 Indian hospitals since 1988. Every consignment of Ge-68 Line Source ships with cold-chain logistics, AERB import documentation, CDSCO registration references and a Certificate of Analysis delivered before dispatch — the paperwork your radiation-safety and procurement teams need, pre-assembled.
- Nationwide delivery footprint — every metro and tier-2 city in India, scheduled to your treatment / procedure calendar.
- AERB & CDSCO documentation — import licence, radiation-safety paperwork and RSO briefing pre-assembled for the audit file.
- 40+ years in Indian oncology — long-standing supply relationships with AIIMS, Tata Memorial, and hundreds of tertiary-care centres.
- Single point of accountability — one purchase order, one delivery contact, one after-sales team across the whole product family.
Also supplied by Saxsons Group across India
Keep your PET scanner normalized and quantitatively accurate
Contact Saxsons Group for Ge-68 line sources sized for your PET system, AERB sealed source licensing and import documentation across India.