Authorised Indian Distributor
Saxsons Group
New Delhi, India · Since 1997
ART PhantomAnthropomorphic Radiotherapy QA Phantom — ICRU-44
Refined Alderson RANDO design — 2.5 cm transected horizontal slices held between aluminium end plates by nylon tie rods. Tissue-equivalent slices with bone-equivalent / soft-tissue-equivalent / lung-equivalent pin holes accept TLD, OSL, MOSFET and ion-chamber dosimeters. Male (175 cm / 73.5 kg / 36 sections) and female (155 cm / 50 kg / 33 sections) variants. ICRU-44 compliant. The end-to-end treatment-chain QA workhorse used in ~10,000 sites worldwide over three decades.
Key Features
- Refined Alderson RANDO design — three decades of clinical-physics use across ~10,000 sites worldwide
- ICRU-44 compliant tissue-equivalent material — designed within sophisticated technological constraints
- 2.5 cm horizontal slice thickness for fine-resolution depth-dose verification
- Male variant: 175 cm tall, 73.5 kg, 36 sections (head sections 0–9, body sections 10–35)
- Female variant: 155 cm tall, 50 kg, 33 sections (head 0–9, body 10–32)
All Features
- Refined Alderson RANDO design — three decades of clinical-physics use across ~10,000 sites worldwide
- ICRU-44 compliant tissue-equivalent material — designed within sophisticated technological constraints
- 2.5 cm horizontal slice thickness for fine-resolution depth-dose verification
- Male variant: 175 cm tall, 73.5 kg, 36 sections (head sections 0–9, body sections 10–35)
- Female variant: 155 cm tall, 50 kg, 33 sections (head 0–9, body 10–32)
- Bone-equivalent polymer moldings reproduce cortical-bone and spongiosa shape, mass density and attenuation coefficients
- Lung-equivalent material — 0.30 g/cm³ syntactic foam
- Soft-tissue-equivalent material — closely controlled to the average density of soft tissues
- Pin holes available in 3 cm × 3 cm or 1.5 cm × 1.5 cm grids; 5 mm or 7 mm diameters
- Compatible with TLD chips, rods, bars, cubes; MOSFET detectors; OSL dosimeters; ion chambers
- External assembly configuration supports film dosimetry between slices
- Internal assembly configuration supports TLD / ion-chamber dosimetry within slices
- Slices held between aluminium end plates with nylon tie rods; knobs at each end clamp tight in proper alignment
- Both assembly devices included in standard delivery — no separate accessory order required
Technical Specifications
| Anatomical reference | Male: 175 cm (5' 9") tall, 73.5 kg (162 lb); Female: 155 cm (5' 1") tall, 50 kg (110 lb) |
| Slice configuration | Transected horizontally into 2.5 cm thick slices; Male 36 sections (0–35), Female 33 sections (0–32) |
| Head sections | Sections 0–9 in both variants (10 head sections) |
| Material standard | ICRU-44 tissue-equivalent across all phantom materials |
| Bone equivalent | Polymer moldings reproducing cortical bone and spongiosa shape, mass density and attenuation coefficients |
| Lung equivalent | Syntactic foam, density 0.30 g/cm³ |
| Soft-tissue equivalent | Density closely controlled to average soft-tissue density |
| Pin grid | 3 cm × 3 cm or 1.5 cm × 1.5 cm spacing; 5 mm or 7 mm pin diameter |
| Dosimeter compatibility | TLD chips / rods / bars / cubes; MOSFET; OSL dosimeters; ion chambers; film |
| Assembly hardware | Aluminium end plates + nylon tie rods + clamp knobs; both internal and external assembly included |
| Applications | TPS validation, end-to-end treatment-chain QA, dosimetry verification, beam-data benchmarking |
| Compliance framework | ICRU-44 tissue-equivalent material specification; AAPM TG-119 / TG-148 / TG-218 end-to-end QA expectations |
Applications
The dosimetry phantom three decades of clinical physics has built around
TPS validation
New treatment planning system commissioning — irradiate the phantom with a series of beams of known dose, read the in-slice dosimeters, compare against the TPS prediction. ICRU-44 tissue equivalence means the comparison is direct, no conversion factors.
End-to-end treatment-chain QA
Plan a patient-like treatment on the phantom, deliver it on the linac, measure delivered dose at dosimeter positions. Catches errors anywhere in the chain — imaging, contouring, planning, delivery, dosimetry analysis.
AAPM TG-119 / TG-218 IMRT QA
IMRT / VMAT commissioning per AAPM TG-119 (commissioning) and TG-218 (patient-specific QA). The ART phantom holds dosimeters at clinically relevant anatomical positions, not just flat-slab geometry.
Brachytherapy QA
High-dose-rate and low-dose-rate brachytherapy treatment-plan verification. Tissue-equivalent slices ensure the measured dose maps onto patient dose without source-strength-specific conversion factors.
Electron-beam dose verification
Electron-beam dose-profile work in head-and-neck and chest-wall geometries. Bone and lung inserts give the realistic high- and low-density inhomogeneities clinical electron treatments encounter.
Teaching and training
Medical-physics residency programmes use the ART phantom as the hands-on dosimetry teaching tool — students irradiate, read dosimeters, compare to TPS, and walk through the chain of measurement before they work on patient cases.
Why ART Phantom?
Every slice and every insert is calibrated to ICRU-44 tissue-equivalent specifications. A measured dose in the phantom corresponds directly to a patient dose at the same anatomical position — no conversion factor that has to be defended at accreditation review.
Approximately 10,000 ART phantoms are in routine clinical use globally. The dosimetry results from your phantom are comparable against published peer-reviewed datasets generated on the same platform — the most-used physical phantom in radiation oncology QA.
The 2.5 cm slice thickness puts a dosimeter measurement point every 2.5 cm down the patient axis. Depth-dose verification and PTV-OAR dose differential checks are resolved at clinically meaningful scales — not the 5 cm slabs of cheaper phantoms.
Catalogs & Resources
Manufacturer product page. Contact Saxsons for India pricing, dosimeter-package configuration, training and commissioning support.
ART Phantom
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FAQ
Anthropomorphic phantom for end-to-end radiotherapy QA — questions we hear from Indian medical-physicist teams
Why a water phantom isn't enough for patient-dose verification, what ICRU-44 tissue equivalence removes from the measurement, why 2.5 cm slicing catches SBRT dose-fall-off errors, and how the phantom is supplied across India.
Q.Why does a radiotherapy department need an anthropomorphic phantom on top of a water phantom?
A water phantom measures dose in a homogeneous water medium — perfect for beam-data acquisition, wrong for patient dose. The human body has heterogeneous densities (lung, bone, soft tissue) that dose distributions actually see in the clinic. An anthropomorphic phantom (ART / RANDO) reproduces the human density map — the delivered dose at a specific anatomical point in the phantom is directly comparable to the dose the plan calculated at the same point in the patient. This is what end-to-end QA for a new SBRT or IMRT programme actually measures against.
Q.What does ICRU-44 tissue equivalence buy at the dosimeter measurement point?
ICRU-44 defines the reference tissue-substitute densities and effective atomic numbers for anthropomorphic phantoms. The ART Phantom is ICRU-44 compliant so the measured dose at the internal dosimeter point matches the dose a patient would receive at the corresponding anatomical point. Non-ICRU-44 phantoms introduce a density correction that has to be applied to every measurement — the ART Phantom removes that correction entirely.
Q.What does 2.5 cm slice thickness actually mean for the dosimetry programme?
2.5 cm slice thickness places a dosimeter measurement point every 2.5 cm down the patient axis. Depth-dose verification, PTV-OAR dose differential checks and off-axis dose gradients are resolved at clinically meaningful scales — cheaper phantoms with 5 cm slabs miss the intermediate points where the dose is actually changing. For SBRT dose-fall-off verification the 2.5 cm resolution is often the difference between catching a plan error and missing it.
Q.Which end-to-end QA frameworks does the ART Phantom sit inside?
AAPM TG-119 (IMRT commissioning benchmark), TG-218 (patient-specific QA), TG-101 (SBRT commissioning), and the IROC / MDACC credentialing frameworks that clinical-trial-participating departments run against. Approximately 10 000 ART phantoms are in routine use globally so the department's dosimetry results are comparable against published peer-reviewed datasets generated on the same platform.
Q.How is the ART Phantom supplied and supported in India?
Distributed across India by Saxsons Group. Supply covers the male / female variants, dosimeter-package configuration (film, TLD, OSL, ion chamber), commissioning training and India commissioning support. The phantom is a passive non-radioactive accessory imported under CDSCO Medical Devices Rules 2017 — no AERB licence needed for the device itself.
ART Phantom supplier in India — Saxsons Group
Saxsons Group has supplied radiotherapy equipment to over 1,000 Indian hospitals since 1988. Every consignment of ART Phantom 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
The end-to-end treatment-chain QA phantom for modern radiation oncology
Contact Saxsons Group for ART Phantom supply (male / female variants), dosimeter-package configuration, CDSCO medical-device import documentation and India commissioning support.