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Why is ultrasound less dangerous than x-rays?
I believe it is because ultrasound uses sound waves whereas x-rays are a form of ionizing radiation. (Ionizing radiation is radiation with enough energy to remove electrons from their orbit around a nucleus.) However, with today's advances in x-ray protection X-rays are not generally harmful unless in excessive amounts. Medical radiation (for the average individual) accounts for only 11% of the irradiation received over our lifetime. There are tons of consumer products (exit signs and skin lotions, for example) that expose us to radiation. Not to mention the sun... Anyway, my point is that ultrasound is probably safer than X-rays. But it is also important to know that the type of diagnostic information produced by each is different and if your doctor recommends you get an xray, don't insult him by suggesting an ultrasound instead. :)
How many non-zero angles are formed in a fan of 17 rays?
136 * * * * * Actually there are 17*16 = 272 angles. Assuming the rays do not meet at 180 degrees, each pair of rays forms two angles: one less than 180 deg and one greater.
How many non zero angles are formed in a fan of 30 rays with common angles?
Assuming none of the rays meet at 180 degrees, each pair of rays gives rise to two angles: one less than 180 deg and one greater. There can, therefore, be a maximum of 30*29 = 870 angles. (There are 435 unique pairs of rays: ab, ac, ad...bc, bd, be, etc.)
What is ultrasound?
Ultrasound is sound which has a frequency higher than that of audible sound.( like radar )ADDED: Not like radar. That uses radio waves, although sonar and radar principles are similar.
Is 8.7-0.26 greater or less than 8?
Less
Are X-rays less dangerous to health than ultraviolet radiation?
No, they are not. X-rays have a higher energy than UV radiation, and they have the potential to do more damage to tissue.
Why is ultrasound less dangerous than x-rays?
I believe it is because ultrasound uses sound waves whereas x-rays are a form of ionizing radiation. (Ionizing radiation is radiation with enough energy to remove electrons from their orbit around a nucleus.) However, with today's advances in x-ray protection X-rays are not generally harmful unless in excessive amounts. Medical radiation (for the average individual) accounts for only 11% of the irradiation received over our lifetime. There are tons of consumer products (exit signs and skin lotions, for example) that expose us to radiation. Not to mention the sun... Anyway, my point is that ultrasound is probably safer than X-rays. But it is also important to know that the type of diagnostic information produced by each is different and if your doctor recommends you get an xray, don't insult him by suggesting an ultrasound instead. :)
Are gamma rays more dangerous than x rays?
Yes, of course.
What is more dangerous gamma or alpha rays?
Gamma rays are more dangerous than alpha rays because they are electromagnetic radiation that can penetrate deeply into tissues, causing damage at the atomic level whereas alpha rays are less penetrating and can be shielded by something as thin as a piece of paper.
Why are ultrasound waves used for pre natal scanning rather than x rays?
Because of safety of the fetus, and x-rays really only give an idea of bone structure , whilst ultrasound gives us an indication of lung and heartdevelopment. :)
Why ultrasound rather than x ray is used to scan expectant mother?
Two reasons. Firstly, Safety. Fetus have a higher rate of cellular division than the average human being. A damaged gene while still developing can cause birth defects. Secondly, X-rays really only give an idea of bone structure and generally aren't live. It X-rays don't give as clear an indication on lung and heart development.
What is the standard size of a ultrasound room?
accepted is not less than 7 sqm.
Why are the sun's rays more dangerous on the moon than on earth?
Because the Moon has no atmosphere to filter out dangerous radiation.
Which is more dangerous uv or x-rays?
X-rays are more dangerous as they have a higher energy than UV radiation. The higher the energy, the more potential for DNA damage.
What are the advantages of using ultrasound instead of xray?
it does not damage tissues with ionizing radiation. Ultrasound is also generally far better than plain x rays at distinguishing the subtle variations of soft tissue structures, and can be used in any of several modes
How painful is a prostate ultrasound?
There is some discomfort, but less than most patients expect.
Are there any Ultrasound Technician Schools that can be completed in less than a year?
Yes, you can complete the ultrasound technician in less than one year. Many technical schools, Junior colleges and Universities offer ultrasound technician training classes for this fast track career that can land you a job in as little as one year.
