what is an ultrasound for the ear?
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Middle ear visualization is difficult otoscopically* due to the usual opacity of the eardrum. Though various procedures have been developed, difficulties exist in determining effusion and other middle ear anomalies. Past studies have demonstrated the effectiveness of A-scan ultrasound for such purposes. The present study reports initial results of real-time B-scan sonography on patients with normal and effusion-filled middle ears. Consistent landmarks are seen in the normals. Fluid appears in the abnormals as a band or elliptical area of nonreflectance medial to the eardrum.\n \n*Otoscope- A lighted instrument that lets the physician see far down into the outer ear canal.
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Ultrasound would b a good field to go into but I wouldn't pay that much for only a certificate.... Community colleges offer Associate Degrees for a 2 1/2 year program, and should cost lower then that..... check that out b4 accepting anything
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Ultrasound is the typical method, but there are several hormone tests which can also be used. See the reference:
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Ear wax is a sticky liquid secreted by cerumen glands, found only in the skin of the ear canals.  It traps foreign things that enter the ear canals. Dirt, small insects, bacteria, etc. are immobilized by the wax.  Ear wax protects your ear from foreign materials.
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The stapes bone (stirrup) in the ear.
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The answer to this depends on the medium in which the ultrasound is travelling. Fluids will not in general support transverse mechanical waves, or at least they are damped out very rapidly. So if it is in a fluid like air or water, then ultrasound is a longitudinal mechanical wave. However, in a solid it can be both a transverse and a longitudinal wave.
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http://www.doctorndtv.com/faq/searchdetailfaq.asp?id=6338&word=ear+drum\n&\nhttp://www.drf.org/hearing_health/archive/2003/spr03_otosclerosisoverview.htm
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Ultra = above, so ultrasound is sound above what you can hear.\n\nAn ultrasound machine is just a form of sonar.  It works in a similar fashion, as does radar.  Sound is sent out, some tissues can absorb it while other tissues can reflect it.  The sound is picked up and with computer processing an image can be produced.\n\nAccording to Wikipedia:  http://en.wikipedia.org/wiki/Ultrasound\n“Ultrasound is sound with a frequency greater than the upper limit of human hearing, this limit being approximately 20 kilohertz (20,000 hertz).”\n\nThe human body is mostly water so the ultrasonic waves can pass through the body into an inside cavity, like the bladder, a kidney, or a woman’s womb.  The strength can be adjusted to penetrate more tissue, but it only works well in a cavity.  The ultrasound waves can pass through tissue like sonar passes through water.\n\nIn the case of a pregnant woman the womb is filled with a fluid, ambotic fluid, that is mostly water.  The ultrasonic waves can easily penetrate this fluid, but they are reflected by the babies body inside.  This creates an outline shape with some rough outlines of the face and the limb.  Even enough definition to make out if a penis is present or not.\n\nUltrasound is considered safer than using x-rays or some other radioactive source (CT or nuclear medical scans for radioactive isotopes).  However, it has been shown that the ultrasound waves can damage the brain of a rat fetus, so ultrasound should only be used on a fetus if there is a medical reason to do so.  Just getting a picture of the fetus is unethetical.\n\nIn my case I have kidney stones and an ultrasound inspection was used to see how large they are and where they were located.  The sound isn’t focused agaisnt my head so the procedure is very safe, and much cheaper than and MRI exam is.  Also the technican can run a long scan searching for something which is more difficult to do with an MRI.\n\nThe Machine has a paddle with a vibrating membrane and a smaller sound absorbing membrane.  The skin is prepared with a gell, to make better contact with the paddle.  As the paddle is placed against the skin it vibrates the skin, and the body itself, then the vibrations are carried to the organ being inspected.  The reflected vibrations are taken in by the paddle and transferred to the machine.  As the technican moves the ultrasound paddle then they create a scan image, sort of like what a radar does.  There are seveal sound receptors (the smaller vibrating membrance) inside the paddle so a single sweep can create a larger image.  The patient doesn’t feel anything, there is no bone conduction to the ear or any other sensation.  This is another reason why it is a very safe scanning method.\n\nThe returning signals are compiled by the ultrasound machine’s internal computer and displayed as a pie shapped image on the screen.  It takes a trained technican to make sense of that image.  I didn’t understand what was on the screen during my ultrasound.  Since the paddle has audio receptors, it is easy to include one that can pick up a fetus’s heartbeat.  Also part of the heart beat sound is in the ultrasonic frequency so the machine can pick it up.\n\n“Medical sonography (ultrasonography) is a useful ultrasound-based diagnostic medical imaging technique used to visualize muscles, tendons, and many internal organs, their size, structure and any pathological lesions. They are also used to visualize a fetus during pregnancy. Ultrasound scans are performed by medical health care professionals called sonographers. Obstetric sonography is commonly used during pregnancy.\n\nUltrasound is generally regarded as a "safe test" because it does not use ionising radiation as in x-rays, nuclear medicine, or CT. But it is a form of energy, and scans should only be performed for a suitable medical indication by trained operators (sonographers). Scans performed for baby photos are considered by the profession to be unethical
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sebaceous glands in the ear produce the wax and it is to help move dirt and debris out
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You have an ear infection, go to your doc asap
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Ultrasound is a technology that uses sound waves (the waves are outside of the range of human hearing) and based on the time it takes to echo the sound wave back, it can draw a 'picture' of what the sound waves bounce against.\n\nThink of it like "bouncing a ball" on the ground, the quick the ball comes back to you, the less distance it travelled, and you can "vizualize" that the ground is higher in some spots than other spots.  You can put that information together in order to draw a picture.\n\nA 'pelvic' ultrasound just means that an ultrasound is done in the pelvic area, most likely used to examine the bladder, lower intestinal region or the uterus for females in order to make sure that everything looks normal.\n\nAn ultrasound is a non-invasive, painless procedure.  The device used is usually lubricated with a water-based lubricant and then pressed to the skin and moved over the area that is being 'photographed' by the ultrasonic sound waves.
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cat scan isn't really good to see whats going on in the inner ear, however, mri is very good in detecting blockages or tumors near or in the inner ear or the brain.  there aren't presently any mri's for inner ears however, the general mri machines do perfectly fine in detecting blockages or tumors in any area of the body.
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It is like SONAR.  A high frequency sound is emitted that bounces off surfaces inside your body.  The bounced back sound is collected and is used to generate a picture of your insides.
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A sonometer wire is a (usually steel) wire used in a sonometer. A sonometer is used to study transverse vibrations in a string. Bridges can be used to change the length of the string, which runs over a pully to a set of weights which are used to change the tension.
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This is a tried and true question of Philosophy.  The way one answers shows how human-centered your viewpoint of the natural world is.\nSound is a phenomenon with definite physical, scientifically testable characteristics, e.g. displacement of air molecules; nevertheless, if a HUMAN is not around to hear the sound, does it count? If there is no eardrum to be impacted by the airwaves, is it even a sound? Well, I would have to say that the first person here today has it right-- this is Yahoo Answers. Anything is possible. Except sound.
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The cerumen glands. See the reference.
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Hi,\n\nHope You and family are fine.\n\nThere can 2 things.\n\n1. Tinnitus : Best described as an acoustic like feeling generated somewhere in the human body. Objective Tinnitus can be heard by the patient and the by the examiner.  It may be caused by spasms-like movement of the small bones in the middle ear, spontaneous movement of the soft palate and sometimes by sounds generated in the cochlea (where the hearing nerves are located.) Subjective tinnitus is best defined as an acoustic-like sensation that is heard only by the patient and not by anyone else. Its cause lies somewhere in the auditory system.\n\nBut it should be persistant, in Your case I its not persistent and only occur while You are walking then it may be SEISMIC EFFECT, That is walking itself produces a jarring motion that may create movement of the small bones or contractions muscles in the middle ear.\n\nIn order to test this hypothesis, consider doing the following: I) Walk slowly (with minimal jarring) and determine if the clicking sensation is present. 2) Then walk at your normal pace and determine if the clicking returns. 3) Move head up and down slowly and notice if the clicking is absent or present. 4). Then, vigorously, move your head up and down and determine if the clicking sound returns.\n\nAnother suggestion is to do the following: If you use hearing aids, take them off and then walk a brief distance and see if the clicking occurs. Put them on and follow the same procedure. If there is no clicking when the hearing aids are not worn, and it is present when they are, it is quite possible that the seismic effect is causing the problem. \n\nAt any rate, what you are describing does not appear to be a harbinger of something that should be of great concern. However, if it is a constant concern, by all means consult an ear specialist.\n\nA word of caution: Regardless of the cause of the perceived sound, even though it is benign, constant, negative attention to that sound can create emotional disturbance. If a medical examination finds no evidence of a physical or medical problem, then be assured the clicking sound offers no threat to the quality of life. \n\nHope that answers Your question.\n\nWarm regards,\n\nTanvir.