“…These were later diagnosed as lipomas. Four cases were anechoic (diagnosed as ganglions). Only four lesions showed hyperintense signal on T1-weighted images. …”
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“…Warthin tumor usually presents as a hypoechoic, oval-shaped lesion with anechoic cystic spaces. Malignancies are characterized by blurred outlines, irregular shape, usually heterogeneous echogenicity and pathological neovascularization. …”
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“…One of the lesions was solid, situated in the head and neck of the pancreas, hypoechoic, with anechoic areas of cystic degeneration. The second lesion was cystic, hypoechoic, situated in the neck of the pancreas, with exophytic growing. …”
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“…RESULTS: Metastatic lymph node detection in sonographic evaluation was associated with echogenic hilus obliteration, complete hypoechoic or anechoic appearance of lymph nodes, and asymmetric/nodal or diffuse cortical thickening greater than 3.8 mm. …”
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“…Hepatic cyst imaged as a pear-shaped sac with a bright echogenic margin, anechoic content, and distal acoustic enhancement. …”
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“…Ultrasound revealed a complex cystic tumor mass of 60 mm in the left breast, with both anechoic (cystic) and echogenic (solid) components, with ill-defined margin. …”
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“…The ultrasound display showed tubular anechoic intertwined structures that demonstrated bidirectional flow, which is suggestive of an AVM. …”
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“…Ultrasound examination showed a well-circumscribed round lesion filled by anechoic fluid with punctate echoes, confirming a diagnosis of acute dacryocystitis complicated by lacrimal abscess. …”
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“…Examination by colour Doppler ultrasound showed the following: “Twin live births with normal foetal umbilical artery blood flow indexes and a 183 mm × 112 mm anechoic zone in the right front of the uterus”. Initially, we made an incorrect judgement wherein we considered the amniotic sac that was protruding into the abdominal cavity to be an adnexal cyst. …”
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“…Finally, some measurement results are given to compare the developed demonstrator with traditional anechoic measurements, and show the potential capabilities of the proposed concept to perform fast and reliable measurements.…”
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“…METHODS: 31 people with normal hearing took part in an experiment conducted in an anechoic chamber. Participants listened to 18 different noise recordings and rated each of them using the numerical ICBEN scale regarding noise annoyance. …”
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“…Ultrasound evaluation revealed ovarian enlargement secondary to multiple contiguous cysts with anechoic content. The patient was administered levothyroxine 175 μg/day. …”
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“…To prove the concept, a prototype of the antenna has been built and experimentally characterised inside an anechoic chamber. Although constructed in a different substrate (FR4 substrate) as initially designed, beamsteering ranges up to [Formula: see text] in azimuth and [Formula: see text] in elevation, limited to the proposed case-studies, are reported with the prototype, validating the antenna and the usefulness of the proposed design.…”
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“…During the evaluation, an abdominal ultrasound revealed a pancreatic growth that was “bulky, solid, with irregular margins, in homogeneously hypoechoic, with anechoic areas of necrosis, located lateral to the tail of the pancreas and medial to the upper pole of the left kidney and the lower splenic pole”. …”
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“…Transcranial ultrasonography revealed anechoic alteration of midbrain raphe in depression and anxiety disorders, suggesting affection of the central serotonergic system. …”
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“…A test was performed while driving a tractor on a chassis dynamometer in a semi-anechoic chamber for reproducible measurement and evaluation. …”
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“…For junior radiologists, the ultrasonographic features that were not improved by AI assistance included cystic or almost completely cystic nodules, anechoic nodules, spongiform nodules, and nodules smaller than 5 mm, whereas for senior radiologists the features that were not improved by AI assistance were cystic or almost completely cystic nodules, anechoic nodules, spongiform nodules, very hypoechoic nodules, nodules taller than wide, lobulated or irregular nodules, and extrathyroidal extension. …”
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“…Endoscopic ultrasound revealed a low-echoic mass around the duodenum and high-echoic floating matter suggesting debris and anechoic areas that indicated a liquid component. These findings suggested hematomas or abscesses. …”
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“…This improvement addresses the issue of a suboptimal coupler split ratio and phase difference, which can affect the accuracy and performance of the symmetric demodulation method. In an anechoic chamber test environment, the symmetric demodulation algorithm implemented with the WDM optical path structure achieved a signal-to-noise ratio (SNR) of 75.5 dB (1 kHz), a sensitivity of 1104.9 mV/Pa (1 kHz), and a linear fitting coefficient of 0.9946. …”
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