IMRT Thorax Phantom

Model 002LFC
Complete QA from CT Imagine to Dose Verification

 The CIRS Model 002LFC IMRT Thorax Phantom for film and ion chamber dosimetry is designed to address the complex issues surrounding commissioning and comparison of treatment planning systems and complete system QA from CT imaging to dose verification. Once the only way to do IMRT/VMAT QA, phantoms like the 002LFC are used today for more intensive investigations especially during commissioning, research and end-to-end testing. 

Tissue Equivalent Technology

 The 002LFC is elliptical in shape and properly represents an average human torso in proportion, density and two-dimensional structure. It measures 30 cm long x 30 cm wide x 20 cm thick. The phantom is constructed of proprietary tissue equivalent epoxy materials. Linear attenuations of the simulated tissues are within 1% of actual attenuation for water and bone, and within 3% for lung from 50 keV to 15 MeV. 

 Tissue equivalent interchangeable rod inserts accommodate ionization chambers allowing for point dose measurements in multiple planes within the phantom. Hole placement allows verification in the most critical areas of the chest. One half of the phantom is divided into 12 sections, each 1 cm thick, to support radiographic or GafChromic® film. 

Additional inserts are available to support a variety of other detectors including TLD’s, MOSFET, and diodes. 

Intuitive Setup

Handling, assembly and proper orientation of the phantom is easy with the use of a unique alignment base and holding device. The surfaces of the phantom are marked for ease of laser alignment. CT markers are included to ensure accurate film to plan registration on the center film.* 

  • Verify heterogeneity corrections
  • Correlate CTU to electron density
  • Check dose distributions in sensitive areas
  • Check depth doses and absolute dose
  • 2D and 3D isodoses
  • Calibrate film with ion chamber & other detectors*
  • Verify individual patient treatment plans
  • Designed to accommodate additional, optional breast attachments

IMRT Verification and End-to-End Solution

CIRS IMRT phantoms are manufactured from tissue equivalent materials that mimic within 1% from 50 keV to 15 MeV for accurate simulation during all necessary steps of IMRT verification. The interchangeable rod design allows the phantom to accommodate a multitude of dose measurement devices such as ion chambers, TLD, diodes and MOSFET’s in the same location within the phantom*. Phantom cross sections accommodate GafChromic ® or standard ready-pack films.(1)s.

The CIRS line of IMRT phantoms is compatible with the RIT 113 software for film to plan analysis. GafChromic ® is a registered trademark of International Specialty Products, Wayne, NJ.

NOTE: This product or an optional accessory of this product requires a CIRS dosimetry cavity code before an order can be placed. Please refer to the Dosimetry Cavity Codes document to identify the CIRS code for the probe you intend to use with this product.

Data Sheet

IMRT Thorax Phantom: Data Sheet

Dosimetry Cavity Codes

Cavity Codes for Dosimetry Devices


Hu, Yunfei; Arnesen, Marius; Aland, Trent; 'Characterization of an advanced cone beam CT (CBCT) reconstruction algorithm used for dose calculation on Varian Halcyon linear accelerators'. Biomedical Physics & Engineering Express. 2022; 8 (2): 25023. IOP Publishing. View
Ślosarek, Krzysztof; Rutkowski, Tomasz; Gądek, Adam; Sroka, Łukasz; Dolla, Łukasz; Rutkowski, Roman; 'Dose estimation in patients treated with radiotherapy for SARS-COVID disease based on EPID measurement'. Nowotwory. Journal of Oncology. 2022; View
Aland, Trent J; 'Quality assurance of complex radiotherapy treatments using high-resolution 2D dosimeters'. 2022; Queensland University of Technology. View
Mahmoudi, Leila; Mostafanezhad, Kamal; Zeinali, Ahad; 'Performance evaluation of a Monte Carlo-based treatment planning system in out-of-field dose estimation during dynamic IMRT with different dose rates'. Informatics in Medicine Unlocked. 2022; 100912. Elsevier. View
Rojas-López, JA; Agüero, H; Mancuzo, A; Binia, S; 'Out-of-field dosimetry in IMRT with OSL'. AIP Conference Proceedings. 2021; 2348 (1): 50021. AIP Publishing LLC. View
Kolarevic, Goran; Jaroš, Dražan; Pavičar, Bojan; Ignjć, Tatjana; Kostovski, Aleksandar; Marosevic, Goran; Predojević, Branko; Mirjanić, Dragoljub; 'Computed tomography simulator conversion curve dependence on scan parameters and phantom dimension'. Journal of Health Sciences. 2021; View

Summary: The paper describes commissioning of a Varian Halcyon 1.0 linear accelerator, in which the Model 62M was used to calibrate CBCT image data to electron density units for the Eclipse Treatment Planning System while final end-to-end testing was performed using the Model 002LFC IMRT Thorax Phantom.
NIAMSAWAN, SASIPRAPA; Sookpeng, Supawitoo; 'The Impact of the variation of computed tomography simulation parameters to dose calculation in computer treatment planning for lung cancer patient'. 2021; Naresuan University. View
Tajik, Mahdieh; Akhlaqi, Mohammad Mohsen; Gholami, Somayeh; 'Advances in anthropomorphic thorax phantoms for radiotherapy: a review'. Biomedical Physics & Engineering Express. 2021; IOP Publishing. View
Shaw, Maddison; Lye, Jessica; Alves, Andrew; Keehan, Stephanie; Lehmann, Joerg; Hanlon, Maximilian; Kenny, John; Baines, John; Porumb, Claudiu; Geso, Moshi; 'Characterisation of a synthetic diamond detector for end-to-end dosimetry in stereotactic body radiotherapy and radiosurgery'. Physics and imaging in radiation oncology. 2021; 20: 40-45. Elsevier. View

Summary: Synthetic diamond detectors, with a high spatial resolution, near water equivalence, and small correction factor, are an attractive real-time supplement to film dosimetry in small-field therapy applications like SRS and SBRT. In this study, the 002LFC, was used to assess the performance of seven different commercial diamond detectors.
Mohammadian, Leila; Bakhshandeh, Mohsen; Saeedzadeh, Elham; Jabbari Arfaee, Ali; 'Dosimetric Comparison of Collapsed Cone Convolution/Superposition and Anisotropic Analytic Algorithms in the Presence of Exaskin Bolus in Radiotherapy'. Iranian Journal of Medical Physics. 2021; 18 (6): 438-443. Mashhad University of Medical Sciences. View
Saini, Amit; Singh, Avtar; Pandey, VP; Kumar, Pankaj; 'Dosimetric Comparison of Photon Beams Using CIRS Thorax Phantom to Evaluate Monaco Radiotherapy Treatment Planning System'. SPAST Abstracts. 2021; 1 (1): View
Zhang, Jun; Li, Xiuqing; Lu, Miaomiao; Zhang, Qilin; Zhang, Xile; Yang, Ruijie; Chan, Maria F; Wen, Junhai; 'A method for in vivo treatment verification of IMRT and VMAT based on electronic portal imaging device'. Radiation Oncology. 2021; 16 (1): 15-Jan. Springer. View
Aland, Trent; Williams, Talia; Spalding, Myles; Kairn, Tanya; Trapp, Jamie; '7. Use of in vivo transit portal images to detect inter-fraction patient geometry changes on an O-ring type linear accelerator for pelvis and head/neck patients.'. Quality Assurance of Complex Radiotherapy Treatments using High-Resolution 2D Dosimeters. 2021; 149. Queensland University of Technology. View
Aland, Trent; Jones, Mark; Aho, Jari; Kairn, Tanya; Trapp, Jamie; '6. Modelling and theoretical improvements to the visualisation of implanted fiducial markers for intra-fraction MV imaging of prostate VMAT targets.'. Quality Assurance of Complex Radiotherapy Treatments using High-Resolution 2D Dosimeters. 2021; 122. Queensland University of Technology. View
Rijken, James David; 'Improvements to the delivery and treatment planning of stereotactic body radiotherapy'. Queensland University of Technology. 2020; View
Zabihzadeh, M; Rahimi, A; Shahbazian, H; Razmjoo, S; Mahdavi, SR; 'Accuracy Evaluation of EPL and ETAR Algorithms in the Treatment Planning Systems using CIRS Thorax Phantom'. Journal of Biomedical Physics and Engineering. 2020; Shiraz University of Medical Sciences. View
Kolarević, Goran; Jaroš, Dražan; Marošević, Goran; Ignjatić, Dejan; Mirjanić, Dragoljub; 'Dosimetric verification of clinical radiotherapy treatment planning system'. Vojnosanitetski pregled. 2020; (0): 70-70. View
Saragih, Y; Lestariningsih, I; Mu’minah, IA; Soejoko, DS; 'Recognizing Intrapulmonary Lymph Node (IPLN) and Lymph Node in Soft Tissue Image from Low Dose Computed Tomography (LDCT) and Standard Dose Computed Tomography (SDCT): Study Using CIRS Phantom'. Journal of Physics: Conference Series. 2020; 1505 (1): 12043. IOP Publishing. View
Kumar, Lalit; Kishore, Vimal; Bhushan, Manindra; Kumar, Pawan; Kumar, Gourav; 'Design and fabrication of a thoracic phantom for radiation dose verification in mega-voltage X-ray beam'. Materials Today: Proceedings. 2020; View
Radojcic, Djeni Smilovic; Casar, Bozidar; Rajlic, David; Kolacio, Manda Svabic; Mendez, Ignasi; Obajdin, Nevena; Debeljuh, Dea Dundara; Jurkovic, Slaven; 'Experimental validation of Monte Carlo based treatment planning system in bone density equivalent media'. Radiology and Oncology. 2020; 54 (4): 495-504. Sciendo. View
Yang, Bo; Yu, Lang; Wang, Zhiqun; Wang, Bei; Li, Wenbo; Zhang, Jie; Zhang, Xin; Wu, Zhufeng; Zhou, Zongkai; Sui, Hui; 'Experience on Commissioning the first Halcyon Linear Accelerator in China'. 2020; View
Hu, Yunfei; Byrne, Mikel; Archibald-Hareen, Ben; Collett, Nick; Liu, Guilin; Aland, Trent 'Validation of the preconfigured Varian Ethos Acuros XB Beam Model for treatment planning dose calculations: A dosimetric study.'. Journal of Applied Clinical Medical Physics. 2020; View
Rohani, Seyed Aliasghar; Mahdavi, Seied Rabi; Mostaar, Ahmad; Rahimi, Shaghayegh; Mohammadi, Reza; Geraily, Ghazale; 'Commissioning and quality assurance of Euromechanics add-on multileaf collimator'. Biomedical Physics & Engineering Express. 2020; 7 (1): 15019. IOP Publishing. View
Akhtaruzzaman, Md; Kukołowicz, Paweł; 'The dependence of inhomogeneity correction factors on photon beam quality index performed with the Anisotropic Analytical Algorithm'. Polish Journal of Medical Physics and Engineering. 2020; 26 (3): 127-134. De Gruyter Poland. View
Handika, Andrian Dede; Tarigan, Sonak Tioria; Karunia, Petrananda Dea; Syafi'i, Ahmad; Fauzia, Annisa Rahma; Mar'ie, Khaerul; Pontoh, Putri Amalia; Pawiro, Supriyanto Ardjo; 'Audit dosimetri treatment planning system berkas foton pada radioterapi eksternal: A Review'. Journal of Medical Physics and Biophysics. 2020; 7 (1): 32-45. View
Vatnitsky S. Commissioning of Radiotherapy Treatment Planning Systems: Testing for Typical External Beam Treatment Techniques. 1583rd ed. (Brunckhorst E, Gershkevitsh E, Ibbott G, et al., eds.). IAEA. 2008.
Yazdani, Samira; Takabi, Fateme Shirani; Nickfarjam, Abolfazl; 'The Commissioning and Validation of EclipseTM Treatment Planning System on a Varian VitalBeamTM Medical Linear Accelerator for Photon and Electron Beams'. Frontiers in Biomedical Technologies. View
Gershkevitsh, Eduard, et al., Dosimetric Verification of Radiotherapy Treatment Planning Systems: Results of IAEA Pilot Study. 2008 Elsevier Ireland Ltd., Radiotherapy and Oncology 89 (2009) 338-346, pgs. 338-346, March 2009. View
Zhao, Y. et al., Monte Carlo evaluation of a treatment planning system for helical tomotherapy in an anthropomorphic hetergeneous phantom and for clinical treatment plans. Med. Phys., vol. 35 (12), pgs. 5366-5374, December 2008.  View
Luo, W., et al., Analysis of image quality for real-time target tracking using simultaneous kV- MV imaging. Med. Phys., vol. 35 (12), pgs. 5501-5509, December 2008. View
Brunckhorst E., et al., Commissioning of Radiotherapy Treatment Planning Systems: Testing for Typical External Beam Treatment Techniques. IAEA, International Atomic Energy Agency, IAEA-TECDOC-1583, pgs. 1-67, January 2008.
Salas Ramirez, Maikol; 'Methods to Improve Bone Marrow Dosimetry in Molecular Radiotherapy'. Julius-Maximilians-Universität Würzburg. View

Summary: A case study in the use of the 002LFC for end-to-end testing of IMRT-based treatment of thorax cancer is presented.


Model: 002LFC Modality: