Comparison of acquisition and iterative reconstruction parameters in abdominal computed tomography-guided procedures: a phantom study

Frandon, Julien; Akessoul, Philippe; Hamard, Aymeric; Bezandry, Edinaud; Loffroy, Romaric; Addala, Takieddine; Bertrand, Martin; Beregi, Jean‐Paul; Greffier, Joël

doi:10.21037/qims-21-328

Cited by 7 publications

(1 citation statement)

References 30 publications

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“…Radiologically equivalent anthropomorphic phantoms could be a valuable tool for a plethora of applications, since it is possible to replicate human tissues' x-ray characteristics, as well as, to assess various medical imaging systems and techniques. Particularly, a phantom can be used for dose verification (Robinson et al 2016, Alssabbagh et al 2017, Goodall et al 2021, quality assurance (Ehler et al 2014, Gear et al 2016, Madamesila et al 2016, medical imaging devices' settings optimization (Woliner-van der Weg et al 2016, Frandon et al 2021), and surgery planning (Kettenbach et al 2014, Shin et al 2016, and imaging modalities such as cancer diagnosis and imaging techniques optimization (Gear et al 2014, Bliznakova, 2020, Holmes et al 2020, Dukov et al 2022.…”

Section: Introductionmentioning

confidence: 99%

3D printing methods for radiological anthropomorphic phantoms

Okkalidis¹

2022

Phys. Med. Biol.

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Three dimensional (3D) printing technology has been widely evaluated for the fabrication of various anthropomorphic phantoms during the last couple of decades. The demand for such high quality phantoms is constantly rising and gaining an ever-increasing interest. Although, in a short time 3D printing technology provided phantoms with more realistic features when compared to the previous conventional methods, there are still several aspects to be explored. One of these aspects is the further development of the current 3D printing methods and software devoted for radiological applications. The current 3D printing software and methods usually employ 3D models, while the direct association of medical images with the 3D printing process is needed in order to provide results of higher accuracy and closer to the actual tissues’ texture. Another aspect of high importance is the development of suitable printing materials. Ideally, those materials should be able to emulate the entire range of soft and bone tissues, while still matching the human’s anatomy. Five types of 3D printing methods have been mainly investigated so far: a) solidification of photo-curing materials; b) deposition of melted plastic materials; c) printing paper-based phantoms with radiopaque ink; d) melting or binding plastic powder; and e) bio-printing. From the first and second category, polymer jetting technology and Fused Filament Fabrication (FFF), also known as Fused Deposition Modelling (FDM), are the most promising technologies for the fulfilment of the requirements of realistic and radiologically equivalent anthropomorphic phantoms. Another interesting approach is the fabrication of radiopaque paper-based phantoms using inkjet printers. Although, this may provide phantoms of high accuracy, the utilized materials during the fabrication process are restricted to inks doped with various contrast materials. A similar condition applies to the polymer jetting technology, which despite being quite fast and very accurate, the utilized materials are restricted to those capable of polymerization. The situation is better for FFF/FDM 3D printers, since various compositions of plastic filaments with external substances can be produced conveniently. Although, the speed and accuracy of this 3D printing method is lower compared to the others, the relatively low-cost, constantly improving resolution, sufficient printing volume and plethora of materials are quite promising for the creation of human size heterogeneous phantoms and their adaptation to the treatment procedures of patients in the current health systems.

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