scholarly journals OP06.04: US anatomy of the middle and inner ear with high-frequency probe: a pictorial essay

2017 ◽  
Vol 50 ◽  
pp. 64-65
Author(s):  
M. Brasseur-Daudruy ◽  
V. Ickowicz ◽  
C. Blondel ◽  
E. Verspyck
Keyword(s):  
Inner Ear ◽  
High Frequency ◽  
Pictorial Essay ◽  
High Frequency Probe

scholarly journals Hearing from the ocean and into the river: the evolution of the inner ear of Platanistoidea (Cetacea: Odontoceti)

Paleobiology ◽  
2021 ◽  
pp. 1-21
Author(s):  
Mariana Viglino ◽  
Maximiliano Gaetán ◽  
Mónica R. Buono ◽  
R. Ewan Fordyce ◽  
Travis Park
Keyword(s):  
Inner Ear ◽  
High Frequency ◽  
Sound Production ◽  
Marine Species ◽  
Late Oligocene ◽  
Evolutionary Patterns ◽  
Ear Morphology ◽  
Cochlear Morphology ◽  
First Time ◽  
Hearing Abilities

Abstract The inner ear of the two higher clades of modern cetaceans (Neoceti) is highly adapted for hearing infrasonic (mysticetes) or ultrasonic (odontocetes) frequencies. Within odontocetes, Platanistoidea comprises a single extant riverine representative, Platanista gangetica, and a diversity of mainly extinct marine species from the late Oligocene onward. Recent studies drawing on features including the disparate tympanoperiotic have not yet provided a consensus phylogenetic hypothesis for platanistoids. Further, cochlear morphology and evolutionary patterns have never been reported. Here, we describe for the first time the inner ear morphology of late Oligocene–early Miocene extinct marine platanistoids and their evolutionary patterns. We initially hypothesized that extinct marine platanistoids lacked a specialized inner ear like P. gangetica and thus, their morphology and inferred hearing abilities were more similar to those of pelagic odontocetes. Our results reveal there is no “typical” platanistoid cochlear type, as the group displays a disparate range of cochlear anatomies, but all are consistent with high-frequency hearing. Stem odontocete Prosqualodon australis and platanistoid Otekaikea huata present a tympanal recess in their cochlea, of yet uncertain function in the hearing mechanism in cetaceans. The more basal morphology of Aondelphis talen indicates it had lower high-frequency hearing than other platanistoids. Finally, Platanista has the most derived cochlear morphology, adding to evidence that it is an outlier within the group and consistent with a >9-Myr-long separation from its sister genus Zarhachis. The evolution of a singular sound production morphology within Platanistidae may have facilitated the survival of Platanista to the present day.

ULTRASOUND AS PRIME MODALITY OF CHOICE FOR EVALUATION OF BREAST LESIONS.

2021 ◽  
pp. 37-38
Author(s):  
Snehal Santosh Rathi ◽  
Sonali Mhaske Kadam
Keyword(s):  
High Frequency ◽  
Breast Imaging ◽  
Nipple Discharge ◽  
Signs And Symptoms ◽  
Breast Ultrasound ◽  
Breast Lesions ◽  
Medical College ◽  
Primary Screening ◽  
High Frequency Probe

INTRODUCTION: The four main roles of ultrasound in Breast imaging are-primary screening, supplemental screening, diagnosis and Interventional procedures. Palpable masses, abnormal nipple discharge and mammographic abnormalities constitute the most common indication for targeted Breast Ultrasound. AIM: To study the role of Ultrasound in evaluating Breast lesions and characterising them as Benign or Malignant. MATERIAL AND METHODS:This is a Retrospective analysis conducted in Department of Radiology, MGM Medical College and Hospital, Kamothey, Navi Mumbai from February 2021 to June 2021. A total of 136 patients with signs and symptoms related to breast lesions were screened. CONCLUSION: The advent of high frequency probe, easy accessibility, cost effectiveness, reliability and relatively easy to perform makes ultrasound as the prime modality of choice for screening breast lesions.

Effects of Otitis Media on Extended High-Frequency Hearing in Children

1993 ◽  
Vol 102 (1) ◽  
pp. 1-5 ◽  
Author(s):  
Robert H. Margolis ◽  
Joni R. Rykken ◽  
Lisa L. Hunter ◽  
G. Scott Giebink
Keyword(s):  
Inner Ear ◽  
Otitis Media ◽  
Middle Ear ◽  
High Frequency ◽  
Good Test ◽  
Recurrent Otitis Media

Extended high-frequency (EHF) hearing was studied in children with and without histories of chronic or recurrent otitis media (OM). The EHF thresholds were found to have good test-retest repeatability. Children with OM histories had poorer EHF hearing than children without OM histories. The EHF hearing in OM children appeared to be related to OM severity. Children with residual tympanometric abnormalities had poorer EHF hearing than OM children with normal middle ear function. The results suggest evidence for middle ear and inner ear components of EHF hearing losses in children with OM.

scholarly journals Inner-Ear Morphology of the New Zealand Kiwi (Apteryx mantelli) Suggests High-Frequency Specialization

2012 ◽  
Vol 13 (5) ◽  
pp. 629-639 ◽  
Author(s):  
Jeremy R. Corfield ◽  
M. Fabiana Kubke ◽  
Stuart Parsons ◽  
Christine Köppl
Keyword(s):  
New Zealand ◽  
Inner Ear ◽  
High Frequency ◽  
Ear Morphology

A Neutron Hardness Assurance Screen Based on High-Frequency Probe Measurements

1976 ◽  
Vol 23 (6) ◽  
pp. 2020-2026 ◽  
Author(s):  
R. A. Bailey ◽  
M. A. Ussery ◽  
P. J. Vail
Keyword(s):  
High Frequency ◽  
High Frequency Probe ◽  
Probe Measurements

Modified high frequency probe approach for diagnostics of highly reactive plasma

2019 ◽  
Vol 28 (11) ◽  
pp. 115009 ◽  
Author(s):  
Petr Sezemsky ◽  
Vitezslav Stranak ◽  
Jiri Kratochvil ◽  
Martin Cada ◽  
Rainer Hippler ◽  
...  
Keyword(s):  
High Frequency ◽  
Reactive Plasma ◽  
High Frequency Probe ◽  
Probe Approach
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