Ultrasonic attenuation and speed in phantoms made of polyvinyl chloride-plastisol (PVCP) and graphite powder

Cortela, Guillermo; Maggi, Luis Eduardo; Krüger, Marco; Negreira, Carlos; Pereira, C.A.Wagner

doi:10.1121/1.4800365

Cited by 8 publications

(4 citation statements)

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“…The attenuation coefficient of polyvinyl chloride (PVC)-plastisol gels doped with powder (PVC or graphite) was investigated using the through-transmission technique. [ 6 ] The acoustic attenuation values of this material were found to be similar to fat tissue. Polyacrylamide gels combined with bovine serum albumin (BSA) were also prepared and tested.…”

Section: Introductionmentioning

confidence: 90%

Ultrasonic Attenuation of an Agar, Silicon Dioxide, and Evaporated Milk Gel Phantom

Drakos

Antoniou

Evripidou

et al. 2021

Journal of Medical Ultrasound

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Background: It has been demonstrated that agar-based gel phantoms can emulate the acoustic parameters of real tissues and are the most commonly used tissue-mimicking materials for high-intensity focused ultrasound applications. The following study presents ultrasonic attenuation measurements of agar-based phantoms with different concentrations of additives (percent of agar, silicon dioxide and evaporated milk) in an effort of matching the material's acoustic property as close as possible to human tissues. Methods: Nine different agar-based phantoms with various amounts of agar, silicon dioxide, and evaporated milk were prepared. Attenuation measurements of the samples were conducted using the through-transmission immersion techniques. Results: The ultrasonic attenuation coefficient of the agar-based phantoms varied in the range of 0.30–1.49 dB/cm-MHz. The attenuation was found to increase in proportion to the concentration of agar and evaporated milk. Silicon dioxide was found to significantly contribute to the attenuation coefficient up to 4% weight to volume (w/v) concentration. Conclusion: The acoustic attenuation coefficient of agar-based phantoms can be adjusted according to the tissue of interest in the range of animal and human tissues by the proper selection of agar, silicon dioxide, and evaporated milk.

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Section: Introductionmentioning

confidence: 90%

Ultrasonic Attenuation of an Agar, Silicon Dioxide, and Evaporated Milk Gel Phantom

Drakos

Antoniou

Evripidou

et al. 2021

Journal of Medical Ultrasound

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“…PVC-Plastisol (PVC-P), which is a suspension of PVC in a liquid plasticizer, has advantages both in terms of durability (it resists bacterial attack and moisture loss compared to biopolymers) and acoustics. Indeed, speed of sound in this material (∼1400 m/s) [28], [30], [31] is closer to that of generic human soft tissue (∼1500-1600 m/s) [32]- [35] compared to silicones (∼ 1000 m/s) [36], [37] or PU (∼1800 m/s) [38], [39]. As for the mechanical properties, elastic modulus and hardness of PVC-P are closer to soft tissue than PDMS and PU, an essential factor for the phantom to have a tactile feeling similar to real tissue.…”

Section: ) Fabrication Of the Ultrasound Phantommentioning

confidence: 97%

Wearable AR and 3D Ultrasound: Towards a Novel Way to Guide Surgical Dissections

et al. 2021

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“…It was found that the velocity of longitudinal ultrasonic waves decreases linearly versus temperature in the temperature range of 20 to 40 °C. The observed decrease is −3.143 ± 0.076 m/s per 1 °C, which is 0.2% [ 28 ].…”

Section: Experimental Verificationmentioning

confidence: 99%

Simultaneous Measurement of Thickness and Elastic Properties of Thin Plastic Films by Means of Ultrasonic Guided Waves

Kažys

Tumšys

2021

Sensors

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Ultrasonic guided waves are already used for material characterization. The advantage of these waves is that they propagate in the plane of a plate and their propagation characteristics are sensitive to properties of the material. The objective of this research was to develop an ultrasonic method that could be used to measure the properties of thin plastic polyvinylchloride films (PVC). The proposed method exploits two fundamental Lamb wave modes, A0 and S0, for measurement of a thin film thickness and Young’s modulus. The Young’s modulus is found from the measured phased velocity of the S0 mode and the film thickness from the velocities of both A0 and S0 modes. By using the proposed semi-contactless measurement algorithm, the Young’s modulus and thickness of different thickness (150 µm and 200 µm) PVC films were measured. The uncertainty of thickness measurements of the thinner 150 µm PVC film is 2% and the thicker 200 µm PVC film is 3.9%.

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Ultrasonic attenuation and speed in phantoms made of polyvinyl chloride-plastisol (PVCP) and graphite powder

Cited by 8 publications

References 0 publications

Ultrasonic Attenuation of an Agar, Silicon Dioxide, and Evaporated Milk Gel Phantom

Ultrasonic Attenuation of an Agar, Silicon Dioxide, and Evaporated Milk Gel Phantom

Wearable AR and 3D Ultrasound: Towards a Novel Way to Guide Surgical Dissections

Simultaneous Measurement of Thickness and Elastic Properties of Thin Plastic Films by Means of Ultrasonic Guided Waves

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