6
65rosessamurai
Guest
The major reasons for X-ray, CT, and Ultrasound is to try and detect something that is wrong, without having to open the person up and see.
There are always risks to opening up a human being, and just to find something would minimize the risk by using "Non-destructive" devices such as the X-ray, CT and Ultrasound.
In general, a lot depends on who's operating the equipment. For CT and Ultrasound, the settings are adjusted on the computer in order to enhance a two-dimensional layout of a three-dimentional object.With X-ray, I think its a matter of adjusting the radiation level to where it penetrates enough, which might be like using an old-fashioned camera. (Not sure, haven't had any direct experience in CT or X-ray testing, but I do in Ultrasonics)
For inanimate objects, the risk of radiation is practically null to the user and test object. However, for humans, there is a risk with the X-ray and CT, since the CT is using X-radiation. Currently, Ultrasound does not indicate any potential risk, though there is a high caution when doing an Ultrasound on a fetus, because it's believed that the ultrasound transfers to heat when absorbed.
Another item in regards to the "Science of Non-destructive Test Apparatuses" such as X-ray, CT and Ultrasound is penetration.
For X-ray and CT, it's a matter of whether the radiation is stopped or passed by a particular object blocking it by absorbing it, or letting it pass because it cannot absorb it.
For Ultrasound, there is a factor of sound velocity in materials, which includes the human body. The sound velocity for Blood (1,580m/s), the Kidney (1,560m/s) and Liver (1,550m/s) are so close, it would be a bit difficult to distinguish them from a novice technican, IMO. Among that are other factors such as the angle of penetration and the "resolution", of course.
As for how Robert is doing, I'm sorry to hear he still doesn't feel better, but like k, I think with the amount of gastrointestinal issues, I can relate, too.
If things like a warm heating pad on the part that hurts, taking in extra water (maybe coffee or something else that would naturally help with constipation, but add to water since its a diuretic), I can't think of anything else right now.
I hope he feels better soon!
There are always risks to opening up a human being, and just to find something would minimize the risk by using "Non-destructive" devices such as the X-ray, CT and Ultrasound.
In general, a lot depends on who's operating the equipment. For CT and Ultrasound, the settings are adjusted on the computer in order to enhance a two-dimensional layout of a three-dimentional object.With X-ray, I think its a matter of adjusting the radiation level to where it penetrates enough, which might be like using an old-fashioned camera. (Not sure, haven't had any direct experience in CT or X-ray testing, but I do in Ultrasonics)
For inanimate objects, the risk of radiation is practically null to the user and test object. However, for humans, there is a risk with the X-ray and CT, since the CT is using X-radiation. Currently, Ultrasound does not indicate any potential risk, though there is a high caution when doing an Ultrasound on a fetus, because it's believed that the ultrasound transfers to heat when absorbed.
Another item in regards to the "Science of Non-destructive Test Apparatuses" such as X-ray, CT and Ultrasound is penetration.
For X-ray and CT, it's a matter of whether the radiation is stopped or passed by a particular object blocking it by absorbing it, or letting it pass because it cannot absorb it.
For Ultrasound, there is a factor of sound velocity in materials, which includes the human body. The sound velocity for Blood (1,580m/s), the Kidney (1,560m/s) and Liver (1,550m/s) are so close, it would be a bit difficult to distinguish them from a novice technican, IMO. Among that are other factors such as the angle of penetration and the "resolution", of course.
As for how Robert is doing, I'm sorry to hear he still doesn't feel better, but like k, I think with the amount of gastrointestinal issues, I can relate, too.
If things like a warm heating pad on the part that hurts, taking in extra water (maybe coffee or something else that would naturally help with constipation, but add to water since its a diuretic), I can't think of anything else right now.
I hope he feels better soon!