A flexible gel pad as an effective medium for scanning irregular surface anatomy

Tsui, Ban C. H.; Tsui, Jenkin

doi:10.1007/s12630-011-9623-2

Cited by 13 publications

(11 citation statements)

References 3 publications

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“…This could be explained by the ability of the gel pad to smooth the acute angle of male thyroid cartilage and therefore permit to have a wider surface contact between the transducer and the skin. Moreover, it allows superior probe stability and contact, which can be attributed to the pad's flexibility [9]. Calcifications still remain a hurdle as they prevented visualization in 20 cases.…”

Section: Discussionmentioning

confidence: 99%

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A Simple Tool to Improve Visualization of the Vocal Cords on Translaryngeal Ultrasound in Male Patients

2021

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Introduction Laryngeal ultrasound has been increasingly used for the evaluation of the vocal cords mobility after thyroid and parathyroid surgery. The sensitivity and positive predictive value of the method are reported to be higher than 80%. Nevertheless, the visualization rate in male patients remains low; therefore, ultrasound is not attractive for the perioperative workup in those patients. In the present study, we evaluate the ability to improve the visualization rate for male patients by using a gel pad as an interface between the skin and the ultrasound probe. Methods and Materials Between December 2018 and January 2019, 92 male patients (mean age 49 years; range: 20-80 years) referred to our hospital with different thyroid pathologies received a laryngeal ultrasound without (TLUS) and subsequently with gel pad (G-TLUS). TLUS was performed by B-scan (probe 5-13 MHz, aperture 40 mm). The data were prospectively collected and statistically analyzed. ResultsThe visualization rate in the TLUS group was 35% (32 out of 92 patients). The use of the gel pad could increase the rate to 78% (p \ 0.0001). For both groups, visualization rates are lower in older patients ([ 50 years) compared to younger individuals (TLUS: 25% vs. 45%, p \ 0.05; G-TLUS: 75% vs 82%, p = 0.45). ConclusionThe gel pad significantly improves the vocal cord visualization rate in male patients and should be used routinely.

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Section: Discussionmentioning

confidence: 99%

“…1). Their prominent Adam's apple decreases the contact zone of the ultrasound (US) transducer with the skin that may hinder simultaneous evaluation of both VCs [8, 9].…”

Section: Introductionmentioning

confidence: 99%

A Simple Tool to Improve Visualization of the Vocal Cords on Translaryngeal Ultrasound in Male Patients

2021

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“…Sedangkan, gel pad memiliki SNR yang rendah jika di bandingkan dengan gel standart. Namun, gel pad mampu meminimalisir struktur organ yang tidak rata pada area shoulder yang ditampilkan pada gambar (Tsui & Tsui, 2012).…”

Section: Pembahasanunclassified

The Application of Using Gel Pad as a Medium for Ultrasound Shoulder

2020

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Background: A conductive medium on ultrasound is a medium that is used to obtain sound wave transmission by minimizing air between the transducer and the skin. This study used materials that are easily found such as gel wax and paraffin for making the gel pad. A good oil and mineral based wax gel are used as a basic ingredient for ultrasound gel making. Gel pad can be used to minimize the structure of unauthorized organs. One of which is the shoulder. Objective: This study aims to determine the quality of the image in the use of standard gel, and the use of gel pad as a medium for ultrasound shoulder. Method: Gel pad is made by mixing gel wax and paraffin ingredients. This gel is used to obtain images from ultrasound investigation. The study used 16 samples with a total of 64 images obtained in which 32 images using standard gel and gel pad in the long axis position and 32 images using standard gel and gel pad in the short axis position. The analysis of image results is done using matlab image processing to assess SNR. The image quality obtained from the results of the questionnaire was assessed by a specialist in radiology. Image quality processing based on SNR was tested using independent T test. Meanwhile, the results of image quality from the questionnaire assessment were tested using Wilcoxon. Result: As many as 64 objects were obtained using standard gel. The gel pad showed that there were significant differences in the results of image quality based on SNR values. In the results of the questionnaire assessment, there are several anatomic organs that have no significant differences. Conclusion: The use of standard gel was still higher compared to the use of gel pad. The gel pad is able to become a standard gel alternative on ultrasound shoulder examination.

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“…Gel pads (i.e., stand-off pads) are often used in ultrasound examinations of the body surface. This is because gel pads do not contain scatterers and are a medium that adheres to the skin and probe while providing good delineation of body surface structures [ 6 , 11 , 13 , 14 ]. Although gel pads are often used in skin ultrasonography, the appropriate thickness of gel pads for skin ultrasonography is currently unknown.…”

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The effects of gel pad thickness on the evaluation of skin structures using ultrasonography in normal dogs

Chhay

Hanazono

Kitahara

et al. 2021

The Journal of Veterinary Medical Science

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Gel pads are commonly used in skin ultrasonography; however, the effects of their thickness are unknown. This study investigated the effects of pad thickness on measurements of skin thickness in 10 beagle dogs. Sonograms to measure neck skin thickness were captured without pads and using pads with thicknesses of 3, 5, 10, and 20 mm. Without pads, acoustic shading was observed due to air bubbles in the coupling gel. With 20-mm pads, echogenic artifacts were observed on the skin surface.Entry echo with 20-mm pads was significantly higher than with 3-mm pads. This suggests that visibility of the skin structure could be affected when a gel pad is not used or when a thick gel pad is selected.

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A flexible gel pad as an effective medium for scanning irregular surface anatomy

Cited by 13 publications

References 3 publications

A Simple Tool to Improve Visualization of the Vocal Cords on Translaryngeal Ultrasound in Male Patients

A Simple Tool to Improve Visualization of the Vocal Cords on Translaryngeal Ultrasound in Male Patients

The Application of Using Gel Pad as a Medium for Ultrasound Shoulder

The effects of gel pad thickness on the evaluation of skin structures using ultrasonography in normal dogs

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