What is a Hita Scan? What is the purpose, what part of the body is scanned.?
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ARE YOU TALKING ABOUT A HIDA SCAN (SHORT FOR HEPATOBILIARY SCAN)THIS IS GENERALLY TO CHECK LIVER FUNCTION OR TO CHECK GALLBLADDER. IT IS A STUDY DONE IN NUCLEAR MEDICINE DEPARTMENT.
1142154
hi pinku. its the science which deals with guns and bullets. when ever a bullet is fired, it gets scratched by the barrel of the gun in a particular way. it is totaly unique. no other gun can creat the same type of scratches on the bullet. its like the finger print of humans. when ever a crime takes place, it can be found out from a group of guns that from which gun was the bullet fired. and from that gun's licence number, person can be identified. thus, forensic experts use this technique to catch the culprit. \nto do this, a bullet is fired from the gun in the laboratory. it is fired at a certain angle in water tank that prevents it from getting scratched from any other outer obstacle. then the bullet is put under microscope and its photograph is taken. same is done with the bullet which is found on the crime scene. then both the photographs are matched.\nalso, it can tell the distance from which the bullet was fired. when ever a bullet is fired, it gets heated up due to gunpowder burning. this results in burning of human skin when it enters it. so, the greater the distance, less is the burn.\nit can also tell that which gun was used.\n\nhope that i was able to answer your question.\nNOTE:- bhai, kisi ko thok mat dena! hahaha......\n\ngood luck!
863965
A PET scan is simply a medical examination done with the use of sophisticated technological equipment that take pictures of specific areas such as your head and brain.\n\nIt is not as scary as being inside an MRI. If you are struggling do know that sometimes, there is seizure activity so deep within the brain that nothing can detect it but your body.\n\nEpilepsy for some is only temporary as there have been several cases in which a person recovers.\n\nI personally spent about 10 years on medication and now its been about 3 years since I last had an episode. \n\nI no longer take medications, who knows, it could have been that I grew too tall, in to little amt of time.
514397
They are implementing a unaudit; it's a device to track YAHOO users while they are asking or answering questions. The Unaudit uses a main computer and a person to scan individuals by the way they write, type, and answer questions & answers. Unless you're up to no good everything will be fine and you won't be bothered by them.
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Actually, as an xray tech, they do one of your wrist and your hand.  You have 8 bones in your wrist. These are the carpal bones.  Most babies aren't born with them so they develop over time.  If they see your carpal bones are or aren't developed that can tell you how far ahead you are in growth/how far behind you are. They use those body parts and compare them to the normal for someone your exact age.  It's just a uniform part of the anatomy from an xray standpoint.  It will be of your left hand and/or wrist and is most likely called a Bone Age Study.  Probably the easiest xray u will ever have. all you do is sit there with your hand on the table :)
399105
CT Scanning means: Computed Tomography or CAT Scan\nThe following is copied from a Wikipedia source:\nComputed tomography (CT), originally known as computed axial tomography (CAT) 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 (describing). 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.\n\nAlthough most common in healthcare, CT is also used in other fields, e.g. nondestructive materials testing.
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The detection of X-rays is based on various methods. The most commonly known method are a photographic plate, or cassette, and rare earth screens.\n\nThe X-ray photographic plate is frequently used in hospitals to produce images of the internal organs and bones of a patient. The part of the patient to be X-rayed is placed between the X-ray source and the photographic plate to produce what is a shadow of all the internal structure of that particular part of the body being X-rayed. The X-rays are blocked by dense tissues such as bone and pass through soft tissues. Where the X-rays strike the photographic plate it turns black when it is developed. So where the X-rays go through "soft" parts of the body like organs and skin the plate turns black. Contrast compounds containing barium or iodine can be injected in the artery of a particular organ. The contrast compounds strongly block the X-rays and hence the circulation of the organ can be more readily seen.\n\nAnother method of detecting X-rays is a fluorescent plate. In modern hospitals a special plastic sheet is used in place of the photographic plate. The plastic sheet is read by a scanning laser beam. The resultant image is then stored in a computer. The plastic sheet can be used over and over again.
909156
A chest CT is also known as a cat scan....the Contrast is a dye that they inject into you through an Intravenous needle that is put into your arm...The dye moves through your body and allows things in your chest and else where to be see more clearly.  Then you lie on a table attached to a machine...the table moves into the machine and pictures are taken of your chest....It doesn't hurt...the dye can make you feel funny but there are trained professionals there to help you with any questions or strange feelings you may get....good luck
522564
The alpha particle is actually the nucleus of a helium atom, it is a positively charged particle. It's to big to penetrate skin. Beta particles are high energy electrons or positrons, they can penetrate skin and cell membranes but not the whole body (as X rays do).\n    \nThe positive charge of alpha particles is useful in some industrial processes. For example, radium-226 may be used to treat cancer, by inserting tiny amounts of radium into the tumorous mass.\n\nPositron emission tomography, also called PET imaging or a PET scan, is a diagnostic examination based on the detection of radiation from the emission of positrons.\nPET scans are used to detect cancer and to examine the effects of cancer therapy by characterizing biochemical changes in the cancer. These scans can be performed on the whole body. PET scans of the heart can be used to determine blood flow to the heart muscle and help evaluate signs of coronary artery disease. PET scans of the heart can also be used to determine if areas of the heart that show decreased function are alive rather than scarred as a result of a prior heart attack, called a myocardial infarction. Combined with a myocardial perfusion study, PET scans allow differentiation of nonfunctioning heart muscle from heart muscle that would benefit from a procedure, such as angioplasty or coronary artery bypass surgery, which would reestablish adequate blood flow and improve heart function. PET scans of the brain are used to evaluate patients who have memory disorders of an undetermined cause, suspected or proven brain tumors or seizure disorders that are not responsive to medical therapy and are therefore candidates for surgery.\n\nGamma particles are capable to penetrate skin and the body, too. They are high energy electromagnetic waves that kill living cells. In nuclear medicine, a drug incorporating a gamma-ray emitting radio-nuclide is administered to the patient and the desired organ is imaged by tracing the distribution or flow of the radio-nuclide by scanning the patient with a gamma-ray camera. Radiotherapy is used exclusively in the treatment of malignant tissue to kill cancerous cells. Beams of high energy x-rays or gamma-rays from cobalt-60 sources are most commonly used for such purposes.
962601
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.
391755
It looks sort of like a cat scan machine.You lay down on the long table,board looking thing .You go into the big tunnel,round thing its open both ends.you don`t remove your clothes.Your there five minutes tops.Doesnt hurt. the whole process doesn`t take over five minutes thats the going into room and the coming out.Easyest test I took.It measures the thickness of your bones.
666467
u see its when people look at the human body and investigate and it is very important for criminal investigators!!!  u need to examine bodys
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PET scans for brain imaging.  PET stands for positron emmision tomography. This is used to map where in the body metabolism is occuring by having a person take in small amounts of radioactive sugar (by injection), and then seeing where in the body sugar is being uptaken the most, by looking at the release of positrons by the decay of the radioactive label on the sugar.\n\nThis is used to assess where activity is occuring in the brain, to see where tumor cells might be growing at rapid rates, and a few other purposes.
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The attached site has questions and answers regarding radiation exposure.  All questions are answered by qualified medical personnel.  In a CT scan, the radiation dose is directed only to the part being imaged.  Radiation does not float around the room.  Your ovaries/testicles (you don't state if you are male or female) will receive little if any radiation during a CT scan of your head.  Here is an example of what I found:\n\n"Q: What are the radiation dose and exposure risks involved in a CT of the paranasal sinuses, i.e., a CT of the whole set of sinuses around the nose, with no more specifications given by the physician requesting the CT examination? Is it comparable to what is usually designated as a "skull CT" or a "head CT"?\n \nA: A CT of the sinuses is basically the same as a CT of the head. While the measured dose to the head is typically in the range of 2,000 to 5,000 millirem1 (mrem), this exposure would correspond to an equivalent dose2 of approximately 200 mrem for the entire body. A dose of 200 mrem is roughly equal to a year's worth of background radiation from continuous exposes to cosmic rays, radioactive materials present in the earth and building materials, and radioactive materials normally present within our own bodies from the food we eat. For a further explanation of CT doses, please see my answer to Ask the Experts question Q2424. \n\nIt is impossible to predict what, if any, risk is associated with this level of radiation dose. Some general information and comments on this topic can be found in the answer to Ask the Experts question Q2343. \n\nKenneth L. Miller, CHP, CMHP \nPenn State Hershey Medical Center "\n\nhttp://hps.org/publicinformation/ate/q2748.html
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The CT Scan and MRI image structure not function.  Positron Emission Tomography (PET Scan) images glucose uptake.  In 1980 we all assumed that this would 'see' exactly what you are interested in knowing but by 1995 efforts in this regard were largely abandoned.  The PET scan today is used primarily in cancer patients in whom it is very helpful.  There remains no imaging or blood test regarding chemical imbalances and no such test is in the works.  The human nervous system is complex and continues to elude understanding.
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It is a system of measurement used to characterize the relative density of a substance X-rayed. Helps radiologist distinguish between air, fat, water, soft tissues, bones etc. on CT scans for example.
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They are used in nuclear imaging sorta liek xrays, they can use liek barium to get scans of the intestines and other elements can be traced threw the body to check for defaults