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3d scanner medical imaging image
marshyanke
I know that a spiral produces thinner slices and perhaps in more detail, I am not really sure? I would like to better understand the science behind it? Also, could you respond with some understanding of MRI and Doppler scans as well? Could you provide some of the history of the above mentioned diagnostic tests? Thank you.
Answer
Computed tomography (CT), originally known as computed axial tomography (CAT or CT scan) and body section roentgenography, is a medical imaging method employing tomography where digital geometry processing is used to generate a three-dimensional image of the internals of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. The word "tomography" is derived from the Greek tomos (slice) and graphia (to write). CT produces a volume of data which can be manipulated, through a process known as windowing, in order to demonstrate various structures based on their ability to block the X-ray beam. Although historically (see below) the images generated were in the axial or transverse plane (orthogonal to the long axis of the body), modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures.
Spiral CT scanning is just a new and advanced from of CT scanning: This is a newer type of CT scan, also known as a 'helical' CT scan. It is faster than a standard CT scan and gives an even more detailed picture of your organs and tissues, including blood vessels. This can make it useful for picking up very small tumours. It's called a spiral scan because the X-ray beam rotates around you during the scan in a spiral shape. This gives the radiographers a continuous picture, with no possible gaps between the 'slices' of the scan.
Computed tomography (CT), originally known as computed axial tomography (CAT or CT scan) and body section roentgenography, is a medical imaging method employing tomography where digital geometry processing is used to generate a three-dimensional image of the internals of an object from a large series of two-dimensional X-ray images taken around a single axis of rotation. The word "tomography" is derived from the Greek tomos (slice) and graphia (to write). CT produces a volume of data which can be manipulated, through a process known as windowing, in order to demonstrate various structures based on their ability to block the X-ray beam. Although historically (see below) the images generated were in the axial or transverse plane (orthogonal to the long axis of the body), modern scanners allow this volume of data to be reformatted in various planes or even as volumetric (3D) representations of structures.
Spiral CT scanning is just a new and advanced from of CT scanning: This is a newer type of CT scan, also known as a 'helical' CT scan. It is faster than a standard CT scan and gives an even more detailed picture of your organs and tissues, including blood vessels. This can make it useful for picking up very small tumours. It's called a spiral scan because the X-ray beam rotates around you during the scan in a spiral shape. This gives the radiographers a continuous picture, with no possible gaps between the 'slices' of the scan.
Could you see this machine within the next 75 years?
Qelery
A "Home Diagnosis Machine" that looks like a mini MRI machine in your home that you will use daily. First the machine takes a drop of your blood and saliva as a sample. Then you lay on the machine as it brings into the tube, just like an MRI machine. It scans you body for about 5 minutes, taking 3D images of your body and examining the blood. It would be able to tell you everything from your blood pressure, to cancerous tumors, to what vitamins you lack. Your results will be dispalyed on a touch screen. Everything that needs your attention will be shown to you. It will diagnose you and display what medication, vitamins, or medical attention you need. You select the medication you need to buy and the machine will send it to your local pharmacy.
Answer
Sure, why not? Except that it will probably not look like a MRI machine at all and won't need 75 years to come to market. Like almost any product, this hypothetical device would have to be user friendly as well as have user appeal. That means no big, bulky machines in the house/apartment. I would envision it as more of a solid state scanner that could be placed on the wall, ceiling, shower, door frame or even in your bed frame (basically anything you walk past). Depending on how many points of origin the scanner(s) has (or perhaps it uses some kind of depth sensitive radiation) it can then scan you in three dimensions while you are stationary. There are already consumer available 3D scanners that place objects on turntables and produce a 3D image. So there's the technological component.
I can also see such a device coming to homes due to society's increasing paranoia and obsession with personal health and hygiene (I think this borders on mass psychosis). Basically anything that promises to be of some benefit to personal health will be easily accepted by consumers even if there are other potential drawbacks.
Factors against the invention of such a device would likely have to be economic or political in nature since social acceptance and technology are already in place. Also, a newer and better method might also be discovered in that time.
Sure, why not? Except that it will probably not look like a MRI machine at all and won't need 75 years to come to market. Like almost any product, this hypothetical device would have to be user friendly as well as have user appeal. That means no big, bulky machines in the house/apartment. I would envision it as more of a solid state scanner that could be placed on the wall, ceiling, shower, door frame or even in your bed frame (basically anything you walk past). Depending on how many points of origin the scanner(s) has (or perhaps it uses some kind of depth sensitive radiation) it can then scan you in three dimensions while you are stationary. There are already consumer available 3D scanners that place objects on turntables and produce a 3D image. So there's the technological component.
I can also see such a device coming to homes due to society's increasing paranoia and obsession with personal health and hygiene (I think this borders on mass psychosis). Basically anything that promises to be of some benefit to personal health will be easily accepted by consumers even if there are other potential drawbacks.
Factors against the invention of such a device would likely have to be economic or political in nature since social acceptance and technology are already in place. Also, a newer and better method might also be discovered in that time.
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Title Post: What is the difference between a traditional CT Scanner and a Spiral CT Scanner?
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