Authorised Indian Distributor
Saxsons Group
New Delhi, India · Since 1997
Saxsons own-brand movable laser positioning system for precise patient positioning in radiotherapy. Red 635 nm Class II laser source, ±0.2 mm accuracy, line width < 1 mm at 3–5 m. Available in one-axis, three-axis or five-axis movement configurations driven by exactitude linear guide rails with linear-coding closed-loop feedback. Control via computer, WiFi or manual control box. DICOM 3.0/RT compatible — virtual iso-centres flow from any standard TPS straight to the laser positioning. Designed and manufactured in India by Saxsons Healthcare Pvt. Ltd.
| Manufacturer | Saxsons Healthcare Pvt. Ltd. (designed and manufactured in India) |
| Laser source | Semiconductor laser, 635 nm red, Class II |
| Line width | < 1 mm at 3–5 m projection distance |
| Positioning accuracy | ±0.2 mm |
| Movement configurations | One-axis, three-axis or five-axis (configurable to room geometry) |
| Drive mechanism | Exactitude linear guide rails with linear coding closed-loop feedback control |
| Control modes | Computer (workstation) · WiFi (tablet / wireless terminal) · manual control box (physical pendant) |
| TPS integration | Compatible with all DICOM 3.0/RT treatment planning systems |
| Intended use | CT-simulator patient marking; virtual iso-centre tattooing; treatment-vault patient setup |
| Power supply | 220–240 V AC, 50 Hz; typical Indian clinical mains |
| Compliance framework | AERB radiotherapy-room installation registration; AAPM TG-142 / TG-179 patient-positioning laser expectations |
| Services included | Saxsons installation + commissioning + acceptance-test paperwork; optional annual position-reproducibility-verification visit |
Motorised DICOM-driven positioning — TPS to patient skin
The treatment planning system exports the virtual iso-centre in DICOM RT. The moving laser system reads the DICOM coordinates and drives directly to the planned position — no manual coordinate entry, no transcription error.
Radiation therapist loads the TPS plan, presses go, watches the lasers drive to the planned iso-centre on the patient surface, marks the patient. The ±0.2 mm reproducibility means the same marks land in the same place every time.
Many plans use a virtual iso-centre offset from the patient surface. The 3- or 5-axis configuration positions the cross-hair at any offset point; tattoo the patient at that exact location.
Stereotactic body radiotherapy plans often use complex multi-axis iso-centres. The five-axis configuration handles non-orthogonal coordinate systems without requiring patient re-orientation on the couch.
Patient anatomy changes (weight loss, oedema, gas filling) often require re-simulation. The moving system marks the new iso-centre without requiring physical adjustment of fixed lasers in the room.
A CT-sim room used for both megavoltage planning and brachytherapy planning needs flexible laser positioning. The same system serves both workflows — different iso-centre locations driven from the same control interface.
±0.2 mm accuracy is five times tighter than the AAPM TG-142 stereotactic-class 1 mm threshold. Same patient marked the same way twice ends up in the same place within ±0.2 mm. The reproducibility that virtual iso-centre tattooing absolutely requires, and that SBRT / SRS planning workflows depend on.
The treatment planning system exports the virtual iso-centre in DICOM RT. The moving laser system reads the DICOM coordinates directly — no manual coordinate entry by the radiation therapist. The transcription-error class of failure is eliminated by removing the transcription.
A single-axis system for routine patient marking; a three-axis for standard radiotherapy workflows; a five-axis for stereotactic and complex-anatomy treatments. The same Saxsons engineering scales from the basic CT-sim to the SBRT-capable theranostic suite.
Saxsons own-brand product reference. Contact Saxsons for installation scheduling, commissioning, AERB documentation and India service support.
Saxsons Moving Laser Positioning
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Contact Saxsons Healthcare Pvt. Ltd. on +91 11 4077 6666 or saxsons@saxsons.com for movable laser positioning system supply, axis configuration, installation, commissioning and annual reproducibility verification across India.