Authorised Indian Distributor
Saxsons Group
New Delhi, India · Since 1997
Modular patient-positioning baseplate family for radiotherapy treatment setup. Head / neck / shoulder, thorax, pelvis, breast and full-body indexed baseplates with an interchangeable headrest cushion library, knee-foot supports, breast board, prone board, shoulder-retraction strap and arm supports. Carbon-fibre / radiolucent-composite construction with indexed locking holes at the standard couch-bar pitch — the CT-sim, MR-sim and linac all read the same indexing. MRI-compatible variants for MR-linac and MR-sim workflows. AAPM TG-176 / ICRU 91 setup-reproducibility framework.
| Family | Head / neck / shoulder, thorax, pelvis, breast (tangential), prone, full-body baseplate shells |
| Core material (standard) | Carbon-fibre composite — radiolucent, low-attenuation |
| Core material (MR-compatible) | Non-ferromagnetic composite — MR-safe accessories matched to the baseplate |
| Beam attenuation | Typical 1–2 % at conventional MV photon energies (per per-baseplate measurement) |
| Indexing | Locking-hole array at standard couch-bar pitch; CT-sim, MR-sim and linac all read the same indexing |
| Headrest cushion library | A / B / C / Silverman / D-curve profiles spanning paediatric to large adult anatomy |
| Knee-foot support | Locks pelvic tilt + femoral rotation; multi-position adjustment for short and tall patients |
| Breast board | Variable-angle inclined; angle indexed for reproducible setup |
| Prone board | Belly-board cut-out for small-bowel displacement in pelvic prone setups |
| Shoulder retraction | Adjustable strap; holds shoulders out of the head-and-neck treatment field |
| Arm supports | T-bar and wing-board options; above-head ergonomics for thorax and breast |
| Imaging compatibility | CT, MR and DRR planning workflows; kV-imaging compatible for daily IGRT verification |
| Couch-bar compatibility | Adapters for the major linac couch-tops on the Indian and global market |
| Compliance framework | AAPM TG-176 (device handling), ICRU 83 / ICRU 91 (setup reproducibility), AERB radiotherapy facility licensing |
| Documentation | Per-batch material certificate, MR-compatibility certificate, IQ / OQ / PQ protocols |
Six worked treatment-site workflows the baseplate family covers
Head / neck / shoulder baseplate + thermoplastic mask + shoulder-retraction strap + Silverman-profile headrest. Locks the head-neck-shoulder geometry for IMRT fields targeting larynx, oropharynx and cervical spine. Inter-fraction setup reproducibility within the < 3 mm AAPM TG-142 expectation.
Head-only baseplate + frameless mask + C-profile headrest. The indexed locking-hole array lets the CT-sim and linac setup match within < 1 mm rotational reproducibility — the SRS dose-fall-off geometry needs this tier of reproducibility.
Thorax baseplate + variable-angle breast board + above-head T-bar grip. DIBH workflows pair with the surface-guided radiotherapy (SGRT) chest-rise signal. The board angle and grip-position indexing reproduce inter-fraction setup at the level the heart-dose-sparing benefit demands.
Pelvis baseplate + knee-foot support + prone board (where prone workflow is preferred). The knee-foot lock is the dominant axis for reproducibility; the prone variant displaces small bowel for rectum work and reduces small-bowel dose by ≈ 10–15 % vs supine.
Thorax baseplate + arm-support T-bar + vacuum cushion (paired product). Lung SBRT immobilisation needs the baseplate-to-cushion indexing chain for breath-hold or 4D-CT-derived ITV setup; the indexed pitch keeps the cushion lock reproducible across fractions.
MR-compatible baseplate variant + MR-safe accessories. The composite core does not perturb the B0 field and produces no artefact in the planning image; the indexed pitch is identical to the linac-side variant so MR setup transfers to delivery without per-room recalibration.
The locking-hole array on the baseplate matches the standard couch-bar pitch used across linac and simulator couches. The CT-sim setup, the MR-sim setup and the linac setup read the same indexing — the patient setup transfers across rooms without per-room recalibration. Day-to-day inter-fraction reproducibility is what the AAPM TG-142 / ICRU 91 framework expects.
Carbon-fibre composite core typically attenuates 1–2 % of the treatment beam at conventional MV photon energies. The dosimetry is verified per baseplate and is small enough that the planning system can either correct for it or absorb it inside the standard MU calculation tolerance. The baseplate is effectively radiolucent for the patient-treatment beam path.
The MR-compatible variant uses non-ferromagnetic composite construction with MR-safe accessories. The baseplate does not perturb the B0 field and produces no induced artefact in MR planning images — the same indexed setup transfers from CT-sim to MR-sim to MR-linac to delivery without per-room recalibration.
Variant matrix
Region-specific baseplate, material/MR-compatibility tier, and accessory pack. The per-protocol build sheet matches the baseplate to the treatment site, the material to the imaging-workflow expectation, and the accessory mix to the setup-reproducibility requirement.
Baseplate regions
| Region | Typical treatment-site fit |
|---|---|
| Head / Neck / Shoulder | IMRT head-and-neck, brain SRS frameless setup; pairs with the thermoplastic mask range |
| Thorax | Breast, lung and oesophagus tangential / IMRT setup; integrates breast board + arm supports |
| Pelvis | Prostate, cervix, rectum IMRT / IGRT setup; integrates knee-foot supports for reproducible leg geometry |
| Full body | TBI / TMI and extended-field SBRT setup; covers head-to-foot indexing in one platform |
| Breast board | Inclined / variable-angle board for left- and right-side breast tangential or DIBH treatment |
| Prone board | Pelvic prone setup (rectum, prostate seed) with belly-board cut-out for small-bowel sparing |
Baseplate variants — pick the model
Eleven specific baseplate models across four construction series. Confirm the right model against the workflow at site IQ — body-region coverage, indexing pitch and accessory-pack compatibility lock the selection.
C-series · Carbon Fibre
All-in-One Baseplate
CF001
Head / neck / shoulder + thorax + pelvis
Single platform covering the full body-region range; the workhorse multi-site shell
C-series · Carbon Fibre
Head + Shoulder + Breast
CF002
Head / neck / shoulder + thorax (breast)
Combined upper-body shell for head-and-neck IMRT and breast tangential setups
C-series · Carbon Fibre
Pelvic
CF003
Pelvis
Dedicated pelvic shell for prostate, cervix and rectum IMRT / IGRT setups
C-series · Carbon Fibre
Head + Shoulder
CF004
Head / neck / shoulder
Head-and-neck-only shell for IMRT and brain SRS frameless workflows
Y-series
All-in-One Baseplate (light)
YF001
Head / neck / shoulder + thorax + pelvis
Lighter-weight all-in-one variant for centres standardising on conventional photon energies
A-series
All-in-One Baseplate
AF001
Head / neck / shoulder + thorax + pelvis
Alternative all-in-one platform with the same body-region coverage and indexed pitch
A-series
Head + Shoulder + Breast
AF002
Head / neck / shoulder + thorax (breast)
A-series upper-body shell — pair when site standardises on A-series indexing
A-series
Pelvic
AF003
Pelvis
A-series pelvic shell — full-stainless build available for cleanroom-tier installs
A-series
Head + Shoulder
AF004
Head / neck / shoulder
A-series head-and-neck-only shell — pair with the corresponding A-series accessory pack
B-series · U-Frame
U-Frame Head
BF003
Head — fixed-frame setup
U-shaped fixed-frame head shell for SRS / frameless workflows with maximum lateral access
B-series · U-Frame
Tilting U-Frame Head
BF004
Head — tilting-frame setup
Tilting U-frame variant — adjustable chin-tilt angle for posterior-cervical and brain stereotactic targets
Accessories Matrix
| Headrest cushion library — A / B / C / silverman / D-curve profiles | Match the cervical-spine curvature of the patient so the head-and-neck stays in the same position fraction to fraction; library spans paediatric to large adult anatomy |
| Knee-foot support | Locks pelvic tilt and femoral rotation; reproducibility of prostate and pelvic setups depends on the knee-foot more than the upper-body shell |
| Breast board (variable-angle inclined) | Standard tangential or DIBH breast positioning; angle indexed for reproducible setup across the fraction series |
| Prone board with belly-board cut-out | Pelvic prone setup for rectum and prostate-seed work; the cut-out displaces small bowel out of the high-dose region |
| Shoulder-retraction strap | Holds shoulders out of the head-and-neck treatment field for cervical-spine, larynx and base-of-tongue IMRT |
| Arm supports (T-bar, wing-board) | Above-head arm positioning for thorax and breast tangential setups; T-bar grip ergonomics maintained for DIBH workflows |
| Indexed locking pins + couch-bar adapters | Locks the baseplate to the standard couch-bar pitch at multiple positions; couch-side index is the same on the CT-sim, MR-sim and linac |
| Patient comfort pads | Routine-use foam comfort layers that do not shift the patient position; reduces inter-fraction movement from discomfort |
Per-batch material certificate and (where applicable) MR-compatibility certificate ship with every consignment. Couch-bar adapter is specified to the receiving linac couch-top during the site IQ / OQ phase.
AAPM + ICRU references that anchor patient-positioning baseplate use. Contact Saxsons for India pricing, accessory configuration and MR-compatibility certification.
AAPM task-group report on dosimetric handling of couch tops and immobilisation devices including baseplate attenuation characterisation.
ICRU framework defining setup-reproducibility expectations for IMRT, SBRT and SRS treatment delivery.
AAPM task-group report on linac QA expectations including setup-reproducibility tolerances that the positioning baseplate supports.
Patient Positioning Solutions
Each card opens a focused post for a specific specialty — peer-reviewed evidence and clinical workflow, written for the persona you select.
Contact Saxsons Group for region-by-region baseplate selection, accessory matrix configuration, MR-compatibility variant ordering and IQ / OQ / PQ documentation.