Three-dimensional sonographic features of a fetus with Wolf-Hirschhorn syndrome

Hanprasertpong, Tharangrut; Hanaoka, Uiko; Xia, Zhengyuan; Mori, Nobuhiro; Inubashiri, Eisuke; Kanenishi, Kenji; Yamashiro, Chizu; Tanaka, Hirokazu; Shiota, Atsuko; Yanagihara, Toshihiro; Hata, Toshiyuki

doi:10.1007/s10396-008-0182-2

Cited by 4 publications

(2 citation statements)

References 17 publications

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“…Ultrasonic technology is widely used in medical diagnosis, underwater detection, and industrial nondestructive testing [1]. Ultrasonic imaging is based on the reflection, refraction, and transmission of sound propagating in different media [2][3][4][5][6][7]. Ultrasonic transducer is the key device in ultrasonic applications, and is used to transmit and receive ultrasonic waves.…”

Section: Introductionmentioning

confidence: 99%

Fabrication of 2-D Capacitive Micromachined Ultrasonic Transducer (CMUT) Array through Silicon Wafer Bonding

Wang

Zhang

et al. 2022

Micromachines

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Capacitive micromachined ultrasound transducers (CMUTs) have broad application prospects in medical imaging, flow monitoring, and nondestructive testing. CMUT arrays are limited by their fabrication process, which seriously restricts their further development and application. In this paper, a vacuum-sealed device for medical applications is introduced, which has the advantages of simple manufacturing process, no static friction, repeatability, and high reliability. The CMUT array suitable for medical imaging frequency band was fabricated by a silicon wafer bonding technology, and the adjacent array devices were isolated by an isolation slot, which was cut through the silicon film. The CMUT device fabricated following this process is a 4 × 16 array with a single element size of 1 mm × 1 mm. Device performance tests were conducted, where the center frequency of the transducer was 3.8 MHz, and the 6 dB fractional bandwidth was 110%. The static capacitance (29.4 pF) and center frequency (3.78 MHz) of each element of the array were tested, and the results revealed that the array has good consistency. Moreover, the transmitting and receiving performance of the transducer was evaluated by acoustic tests, and the receiving sensitivity was −211 dB @ 3 MHz, −213 dB @ 4 MHz. Finally, reflection imaging was performed using the array, which provides certain technical support for the research of two-dimensional CMUT arrays in the field of 3D ultrasound imaging.

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Section: Introductionmentioning

confidence: 99%

Fabrication of 2-D Capacitive Micromachined Ultrasonic Transducer (CMUT) Array through Silicon Wafer Bonding

Wang

Zhang

et al. 2022

Micromachines

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“…[1][2][3][4][5][6][7] However, subtle facial abnormalities are still difficult to detect using conventional 3D ultrasound. HDlive is more effective than conventional 3D ultrasound for the observation of normal and abnormal fetal facial anatomies, [8][9][10] because…”

Section: Introductionmentioning

confidence: 99%

HDlive in the Assessment of Fetal Facial Abnormalities

Tanaka¹,

Uematsu²

2014

Donald School Journal of Ultrasound in Obstetrics and Gynecology

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We present the latest HDlive images of normal fetal faces and facial abnormalities. Fetal facial anatomical structures, such as the eyes, nose, ears and mouth, are clearly evident at 12 to 13 weeks of gestation. HDlive with the use of new skin-like colors provides sonographers and physicians with a natural and anatomically realistic appearance of the fetal face. Moreover, HDlive images provide entirely new visual experiences for obstetricians owing to the anatomically realistic depiction of the normal fetal face and fetal facial abnormalities in utero. HDlive can provide clearer facial images than conventional three-dimensional (3D) sonography. In particular, HDlive is superior to conventional 3D sonography for the depiction of fetal eyes because of its shadowing effect. HDlive may be a useful diagnostic modality for the antenatal evaluation of normal fetal facial anatomy and fetal facial abnormalities.

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