A real-time data-based scan conversion method for single element ultrasound transducers

Csány, Gergely; Szalai, Klára; Gyöngy, Miklós

doi:10.1016/j.ultras.2018.10.006

Cited by 6 publications

(4 citation statements)

References 21 publications

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“…The Dermus SkinScanner uses a single-element ultrasound transducer with 33 MHz nominal center frequency. Two-dimensional ultrasound imaging is realized via mechanical scanning applying a physical slider on the device and an automated scan conversion algorithm [ 32 ], verified using phantoms and dermatological data in previous work [ 33 ]. The imaging window is covered by a silicone membrane.…”

Section: Methodsmentioning

confidence: 99%

Preliminary Clinical Experience with a Novel Optical–Ultrasound Imaging Device on Various Skin Lesions

et al. 2022

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A compact handheld skin ultrasound imaging device has been developed that uses co-registered optical and ultrasound imaging to provide diagnostic information about the full skin depth. The aim of the current work is to present the preliminary clinical results of this device. Using additional photographic, dermoscopic and ultrasonic images as reference, the images from the device were assessed in terms of the detectability of the main skin layer boundaries and characteristic image features. Combined optical-ultrasonic recordings of various types of skin lesions (melanoma, basal cell carcinoma, seborrheic keratosis, dermatofibroma, naevus, dermatitis and psoriasis) were taken with the device (N = 53) and compared with images captured with a reference portable skin ultrasound imager. The investigator and two additional independent experts performed the evaluation. The detectability of skin structures was over 90% for the epidermis, the dermis and the lesions. The morphological and echogenicity information observed for the different skin lesions were found consistent with those of the reference ultrasound device and relevant ultrasound images in the literature. The presented device was able to obtain simultaneous in-vivo optical and ultrasound images of various skin lesions. This has the potential for further investigations, including the preoperative planning of skin cancer treatment.

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Section: Methodsmentioning

confidence: 99%

Preliminary Clinical Experience with a Novel Optical–Ultrasound Imaging Device on Various Skin Lesions

et al. 2022

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“…The final segmentation step was based on the active contour model designed by Chan and Vese [ 65 ]. The evaluation step considered two data sources: a commercial high-frequency ultrasound imager HI VISION Preirus, Hitachi (Tokyo, Japan [ 36 ]), with 5–18 MHz EUP-L75 transducer and a custom system based on a manually scanning single-element transducer (V317, Olympus, (Tokyo, Japan)) [ 39 , 109 ], which included 60 images. The dataset was divided into 40 images used for parameter adjustment and 20 for validation.…”

Section: Computer-aided Diagnosis Methodsmentioning

confidence: 99%

Computer-Aided Diagnosis Methods for High-Frequency Ultrasound Data Analysis: A Review

Czajkowska

Borak

2022

Sensors

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Over the last few decades, computer-aided diagnosis systems have become a part of clinical practice. They have the potential to assist clinicians in daily diagnostic tasks. The image processing techniques are fast, repeatable, and robust, which helps physicians to detect, classify, segment, and measure various structures. The recent rapid development of computer methods for high-frequency ultrasound image analysis opens up new diagnostic paths in dermatology, allergology, cosmetology, and aesthetic medicine. This paper, being the first in this area, presents a research overview of high-frequency ultrasound image processing techniques, which have the potential to be a part of computer-aided diagnosis systems. The reviewed methods are categorized concerning the application, utilized ultrasound device, and image data-processing type. We present the bridge between diagnostic needs and already developed solutions and discuss their limitations and future directions in high-frequency ultrasound image analysis. A search was conducted of the technical literature from 2005 to September 2022, and in total, 31 studies describing image processing methods were reviewed. The quantitative and qualitative analysis included 39 algorithms, which were selected as the most effective in this field. They were completed by 20 medical papers and define the needs and opportunities for high-frequency ultrasound application and CAD development.

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“…In the case of mechanical sweeping of an imaging area or volume, the scanned data may not correspond to a Cartesian grid, so a coordinate mapping step, known as a scan conversion, is often necessary before displaying the captured image. Several algorithms have been developed to tackle this issue (Ophir and Maklad 1979), with a focus on real-time requirements (Csány, Szalai, and Gyöngy 2019).…”

Section: Signal Processing Steps 41 Conventional Signal Processing Co...mentioning

confidence: 99%

Review of Current Simple Ultrasound Hardware Considerations, Designs, and Processing Opportunities

Jonveaux¹,

Schloh

Meng

et al. 2022

Journal of Open Hardware

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Ultrasound is one of the most widely used imaging tools for non-destructive testing (NDT) and non-invasive medical diagnosis. Since its beginnings in the 1950s, ultrasound imaging research has led to innovations such as new sensors, signal processing, and hardware development. After more than fifty years, the field continues to evolve, aided by advances in electronics and digital hardware. However, the field remains underresearched in terms of experimental open-source hardware. An open, flexible, and cost-efficient platform is still needed for many basic medical and testing applications. A platform of this kind would support the efforts of researchers, makers, and device developers in accelerating ultrasound research and development.The aim of this review is to identify literature relevant to the understanding, design, and operation of simple ultrasound devices and to present this body of knowledge in a format that is easily accessible to ultrasound system designers. It also provides a summary of current ultrasound research to introduce readers to trends of interest.We capture design and use considerations from classical and modern instruments. We cover both NDT and medical applications, starting with a review of the design context, followed by a review of existing architectures and analog buildings blocks, followed by a survey of digital options available to support and complement the hardware.

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A real-time data-based scan conversion method for single element ultrasound transducers

Cited by 6 publications

References 21 publications

Preliminary Clinical Experience with a Novel Optical–Ultrasound Imaging Device on Various Skin Lesions

Preliminary Clinical Experience with a Novel Optical–Ultrasound Imaging Device on Various Skin Lesions

Computer-Aided Diagnosis Methods for High-Frequency Ultrasound Data Analysis: A Review

Review of Current Simple Ultrasound Hardware Considerations, Designs, and Processing Opportunities

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