Anatomical flow phantoms of the nonplanar carotid bifurcation, Part I: Computer-aided design and fabrication

Watts, Darren M.; Sutcliffe, Christopher; Morgan, R.P.; Meagher, S.; Wardlaw, Joanna M.; Connell, Martin; Bastin, Mark E.; Marshall, Ian; Ramnarine, Kumar V.; Hoskins, Peter; Black, Richard A.

doi:10.1016/j.ultrasmedbio.2006.08.003

Cited by 29 publications

(15 citation statements)

References 19 publications

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“…There have been a tiny number of papers describing manufacture of flow phantoms using 3D printing [eg. 14,[26][27][28]. These studies involve a number of steps; 3D printing is just one step in a series of steps towards the final phantom.…”

Section: Overallmentioning

confidence: 99%

“…These studies involve a number of steps; 3D printing is just one step in a series of steps towards the final phantom. For example in [14] and [26] the steps are: production of a solid core in the shape of an artery using 3D printing; production of a mould from the solid core; production of a low melting point alloy core from the mould; incorporation of the lost core into a box; pouring and setting of the TMM; melting of the alloy to produce the final phantom. The goal in this area would be the generation of the complete phantom using 3D printing.…”

Section: Overallmentioning

confidence: 99%

See 1 more Smart Citation

Fabrication of Two Flow Phantoms for Doppler Ultrasound Imaging

Zhou

Kenwright

Wang

et al. 2017

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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Section: Overallmentioning

confidence: 99%

Section: Overallmentioning

confidence: 99%

Fabrication of Two Flow Phantoms for Doppler Ultrasound Imaging

Zhou

Kenwright

Wang

et al. 2017

IEEE Trans. Ultrason., Ferroelect., Freq. Contr.

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“…The use of rapid prototyping techniques in the fabrication of the anatomically-realistic renal arteries significantly reduces the time and cost involved in making a range of phantoms replicating different grades of RAS since only one master silicon mould is required, which can be reused repeatedly to produce various grades of stenosis with the use of the variable diameter inserts. In previous studies, separate master moulds were required to produce the different grades of stenosis in each individual phantom [19,20]. The TMM chosen for the phantoms was developed as part of the European Commission-funded project [12] and is the IEC-recommended TMM for use in ultrasound test phantoms [21].…”

Section: Diameter Measurements 375mentioning

confidence: 99%

Comparative imaging study in ultrasound, MRI, CT, and DSA using a multimodality renal artery phantom

King¹,

Fagan

Moran

et al. 2011

Medical Physics

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Purpose: A range of anatomically-realistic multi-modality renal artery phantoms consisting of vessels with varying degrees of stenosis was developed and evaluated using four imaging techniques currently used to detect renal artery stenosis (RAS).The spatial resolution required to visualize vascular geometry and the velocity detection performance required to adequately characterize blood flow in patients suffering from RAS is currently ill-defined, with the result that no one imaging modality has emerged as a gold standard technique for screening for this disease. Methods:The phantoms, which contained a range of stenosis values (0, 30, 50, 70 and 85%), were designed for use with ultrasound, magnetic resonance imaging, X-ray computed tomography and X-ray digital subtraction angiography. The construction materials used were optimized with respect to their ultrasonic speed of sound and attenuation coefficient, MR relaxometry (T 1 , T 2 ) properties, and Hounsfield number / X-ray attenuation coefficient, with a design capable of tolerating high-pressure pulsatile flow. Fiducial targets, incorporated into the phantoms to allow for 1 2 registration of images among modalities, were chosen to minimize geometric distortions.Results: High quality distortion-free images of the phantoms with good contrast between vessel lumen, fiducial markers and background tissue to visualize all stenoses were obtained with each modality. Quantitative assessments of the grade of stenosis revealed significant discrepancies between modalities, with each underestimating the stenosis severity for the higher-stenosed phantoms (70% and 85%) by up to 14%, with the greatest discrepancy attributable to DSA. Conclusions:The design and construction of a range of anatomically-realistic renal artery phantoms containing varying degrees of stenosis is described. Images obtained using the main four diagnostic techniques used to detect RAS were free from artifacts and exhibited adequate contrast to allow for quantitative measurements of the degree of stenosis in each phantom. Such multi-modality phantoms may prove useful in evaluating current and emerging US, MRI, CT and DSA technology.

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“…lost core) technika naudojama gaminant modelius iš lavono kraujagyslių (7)(8)(9). Tiksliausiai žmogaus kraujagysles imituoja prototipiniai modeliai, sukurti stereolitografijos metodu pagal trimatės kompiuterinės angiografijos (KTA) bei magnetinio rezonanso angiografijos (MRA) vaizdus (12).…”

Section: įVadasunclassified