Manufacturing and evaluation of a multi-purpose Iranian head and neck anthropomorphic phantom called MIHAN
| Autor: | Sanaz Hariri Tabrizi, Mohammad Milad Hosseini Ahmadi, Zohreh Azma, Meysam Ramezani Anarestani |
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| Rok vydání: | 2021 |
| Předmět: |
Imrt plan
Phantoms Imaging Computer science Radiotherapy Planning Computer-Assisted Biomedical Engineering Radiotherapy Dosage Iran Imaging phantom Computer Science Applications Bony Tissues Ct number Hounsfield scale Humans Dosimetry Anthropomorphic phantom Radiotherapy Intensity-Modulated Radiometry Head and neck Head Neck Biomedical engineering |
| Zdroj: | Medical & Biological Engineering & Computing. 59:1611-1620 |
| ISSN: | 1741-0444 0140-0118 |
| DOI: | 10.1007/s11517-021-02394-y |
| Popis: | A new multi-purpose Iranian head and neck (MIHAN) anthropomorphic phantom was designed and manufactured to be used in diagnostic and therapeutic applications. Geometry of MIHAN phantom was determined based on the average dimensions acquired by CT scans of twenty patients without any medical problems in their head and neck site. Because the phantom was expected to be used with different modalities with a wide range of photon energies, attenuation coefficients of some selected materials were determined using Monte Carlo simulation. Based on analytical and simulation results, acrylonitrile butadiene styrene (ABS) and polylactic acid (PLA) were found suitable choices for soft and bony tissues, respectively. They were used in the 3D printer to build the phantom. The suitability of the materials was checked by CT number value comparison between the organs included in the phantom and the corresponding body tissues and also film dosimetry of a typical intensity-modulated radiation therapy (IMRT) plan.. Hounsfield Unit agreement and 95% ± 2% pass rate for the IMRT plan verification proved the suitability of material selection. Also, the film dosimetry showed feasibility of using MIHAN in radiotherapy plan verification workflow. In addition, PLA was introduced as a spongy bone tissue substitute for the first time. |
| Databáze: | OpenAIRE |
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