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  1. 3921
    “…Logistic analysis of multiple factors showed that smoking history, serum CEA, borderline, air bronchogram, heterogeneous echo, and anechoic areas were significant (P<0.02) risk factors for malignant lesions. …”
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    Endobronchial Ultrasound Combined with Clinical Data for Predicting Malignant Peripheral Pulmonary Lesions
  2. 3922
    “…Measurement was carried out in an anechoic chamber to ensure stable conditions of acoustic pressure in the range from 20 Hz to 20 kHz. …”
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    Characterization of sensitivity of optical fiber cables to acoustic vibrations
  3. 3923
    “…This antenna is fabricated and tested in an anechoic chamber; it can achieve a maximum gain of 5.5 dBi and an absorption of 92% at 7.6 GHz. …”
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    Absorbing Material of Button Antenna with Directional Radiation of High Gain for P2V Communication
  4. 3924
    “…METHODS: A five-year longitudinal study was carried out prospectively in 12 natural villages, Guichi district of Anhui province. A GIS-based spatial analysis was conducted to identify geographic distribution patterns of schistosomiasis infections at the household scale. …”
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    Spatial-temporal variations of Schistosoma japonicum distribution after an integrated national control strategy: a cohort in a marshland area of China
  5. 3925
    “…CASE REPORT: We report a case of a 4-month-old boy with a thin-walled, anechoic cystic abdominal mass in ultrasound (US) examination. …”
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    The abdominoscrotal hydrocele in the infant – case report
  6. 3926
    por Kim, Keonwook, Kim, Youngwoong
    Publicado 2015
    “…The modified Cepstrum algorithm is employed to evaluate the fundamental frequency. In an anechoic chamber, localization experiments over azimuthal configuration show that up to 61% of the proper signal is recognized correctly with 30% misfire. …”
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    Monaural Sound Localization Based on Structure-Induced Acoustic Resonance
  7. 3927
    por Braun, Ueli, Nuss, Karl
    Publicado 2015
    “…Ultrasonography shows massive accumulation of anechoic abdominal fluid and organs suspended in the fluid. …”
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    Uroperitoneum in cattle: Ultrasonographic findings, diagnosis and treatment
  8. 3928
    “…Blind participants overestimated the distance to nearby sources and underestimated the distance to remote sound sources, in both reverberant and anechoic environments, and for speech, music, and noise signals. …”
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    Auditory spatial representations of the world are compressed in blind humans
  9. 3929
    “…DIAGNOSES: At 26 weeks’ gestation who was examined for an anechoic mass on the cerebral median midline with color and pulsed Doppler. …”
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    Antenatal diagnosis and prognostic factors of aneurysmal malformation of the vein of Galen: A case report and literature review
  10. 3930
    “…On ultrasonography, an anomalous structure containing anechoic fluid was identified in the region dorsal to the urinary bladder. …”
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    Urogenital anomalies and urinary incontinence in an English Cocker Spaniel dog with XX sex reversal
  11. 3931
    “…Ultrasound scan showed the lesion as a brightly echogenic mass surrounded by anechoic clear fluid (saliva), casting posterior acoustic shadow. …”
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    Submandibular Sialolithiasis: The Roles of Radiology in its Diagnosis and Treatment
  12. 3932
    por Koepke, G., Randa, J.
    Publicado 1994
    “…There was a systematic difference at low frequencies between the screened-room results and results obtained in a transverse electromagnetic (TEM) cell, open-area test site (OATS), and anechoic chamber. We also present the results of OATS tests confirming the temporal stability of the standard radiator and measuring the loading effect of a ground plane as a function of distance from the sphere.…”
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    Screened-Room Measurements on the NIST Spherical-Dipole Standard Radiator
  13. 3933
    “…The device was calibrated in an anechoic chamber for far-fields and was validated against a portable spectrum analyzer in a residential area. …”
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    Compact Exposimeter Device for the Characterization and Recording of Electromagnetic Fields from 78 MHz to 6 GHz with Several Narrow Bands (300 kHz)
  14. 3934
    “…Doppler ultrasound demonstrated an anechoic compressible intra-parotid lesion, with luminal color filling, and venous spectral waveform. …”
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    Retromandibular vein ectasia : A parotid mass mimicker
  15. 3935
    “…Sonography of pulmonary aspergilloma demonstrated an oval cavity with hypoechoic contents and an irregular border, measuring a diameter of 4.7 cm; inside the lesion, a roundish structure with an anechoic rim was discernable. CONCLUSIONS: The sonographic findings corresponded to chest X-ray and computed tomography imaging in this patient and to previously reported sonographic characteristics of mycotic abscesses in other organs. …”
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    Pulmonary aspergilloma on transthoracic ultrasound
  16. 3936
    “…A transabdominal ultrasound showed a predominantly anechoic structure measuring up to 5.6 cm without definitive Doppler flow, concerning for a large cyst causing ovarian torsion. …”
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    Ovarian Torsion: Presentation and Management in a Pediatric Patient
  17. 3937
    “…The measured results in the anechoic chamber show that the RF-to-dc efficiencies of the prototype at 2.4 GHz and 12.6 GHz reach 64% and 55% accordingly, when the available incident power at the surface is 3 dBm and 14 dBm, respectively.…”
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    Scalable, Dual-Band Metasurface Array for Electromagnetic Energy Harvesting and Wireless Power Transfer
  18. 3938
    “…CASE DESCRIPTION: Ultrasound revealed a large, lobulated, anechoic cystic structure with thin, smooth walls, lacking any solid components. …”
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    Enlarged Cisterna Chyli Diagnosed with Ultrasonography – Case Report
  19. 3939
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    Coronary atherosclerosis in COVID-19 survivors: Association with cardiac injury and function at 6 weeks
  20. 3940
    “…A total of 5369 differentially expressed genes (DEGs) were identified between Guichao2 and B102, most of which were down-regulated in B102. …”
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    RNA-Seq Transcriptome Analysis and Evolution of OsEBS, a Gene Involved in Enhanced Spikelet Number per Panicle in Rice
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