CT Scanning

A CT scan collects imaging data and produces a 3D reconstruction of the material being scanned. The actual image produced can be 3D or other forms of output depending on how it is processed.

Additional Description:

In producing Computed axial tomography (CT or CAT) scans, an x-ray beam is directed through the body and picked up by detectors. Because there are thousands images taken at many angles and positions, the process collects a great deal of data. There are image processing techniques that reassemble all this data into a detailed 3D reconstruction of the section of tissue scanned. This data can then be used to give "slices" of the tissue or create other types of images and perspectives with the full benefit of the 3D information. Thus, the essence of the success of this technique is the ability to create and process the immense about of data needed for the 3D reconstruction.

A brain scan after a head trauma is nearly always done without contrast, because bleeding also shows up white on the scan. The scan should be done as quickly as possible with the shortest scan time because patients with head injuries are often restless. If there is a suspected neck injury, the patients head will have be scanned in the position it is in, and the patient can not be moved into the 'head box'. After the scan, both brain and bone setting views should be looked at to establish if there are any fractures.

Many CT scans of the abdomen involve injecting a dye into the vein. This dye "lights up" blood vessels and may make it easier to diagnose certain conditions. the dye can also be toxic to the kidneys. The blood test is a test of kidney function. If abnormal, the radiologist may either not use dye or use a smaller amount so as not to injure the kidney even more. CT scans without dye do not require baseline blood tests beforehand.

Yes, it will be white for couple of days until all barium is not out of your body

In the early 1900s by the Italian radiologist Alessandro Vallebona, of course at the time there was no practical way to handle the amount of calculations needed, so he made no attempt at building one. It was not until the late 1960s that fast enough computers became available to consider beginning development of tomography scanners. The first practical tomography scanners had to wait for the introduction of Seymour Cray's supercomputer the Cray 1 in 1975, but even then the hospital had to record the data from scans on magnetic tape and send the tapes to a data processing center for batch conversion to images, which would be returned to the hospital several day later. With modern microprocessors the tomography scanners used today can do all the calculations themselves almost in realtime, printing out the images within minutes.

Ischemic strokes and CVAs (cerebrovascular accidents) are caused by the same thing - a lack of blood flow to a part of the brain. The difference is one of duration. In an ischemic stroke, the blood flow loss is permanent or semi-permanent, causing a permanent or semi-permanent loss of function in the part of the body that is served by the part of the brain affected. In a CVA, however, the blood flow loss is temporary, so the loss of function in the area of the body served by the part of the brain that was robbed of blood flow is also temporary, and usually resolves in 24 hours or so. Another difference between the two is that ischemic strokes are usually visible on CT scan and CVAs are not. Often, physicians will use this difference before the 24-48 hour period is up so that they can know whether they should think about initiating "clot-buster" drugs. They also need to know so that they can either prepare the patient and family members for the consequences of stroke, or, as in your case, apparently, reassure the patient and family that the symptoms should resolve completely in 1-2 days. Regardless, you should be followed closely by a doctor for several months and should be started on appropriate medications to treat your cerebrovascular disease (CVD), the name of the condition that causes people to have either CVAs or strokes.

Something in a CAT scan might explain a coma, but it is not a definitive test. Just because a computer "looks normal" that is no indication that it will run. This is a crude analogy. The CAT scan images tissues. It does not evaluate how those tissues are operating - or not. Though there are a few "clues" to what is going on in a CAT scan, the scan is not the "litmus test" for actual brain operation and function. A CAT scan may be performed as part of the workup to find out why someone is in a coma. It will allow the physicians to determine if there is a "physical" cause or not. If nothing shows up, the cause of the coma must be investigated further. A coma can be a difficult thing to find a cause for.

Much to the amusement of some but with serious intent, this past legislative session included modifications to the state's so-called "roadkill law" to address the impacts of vehicle collisions with bears and moose as well as deer. Simply put, in Connecticut if your vehicle strikes and fatally injures one of these animals, once the authorities have attended to the accident scene you are entitled to take the animal home and eat it. If you do not choose to exercise this right, anyone else who wishes to take possession of the carcass has the right to take it home and eat it.

The information from a CAT Scan can tell someone a diagnosis on the state of one's health. A CAT scan is able to determine some kinds of health problems in different regions of the human body. Some of the areas that a CAT scan can detect different types of problematic issues are within the gallbladder, pancreas and spleen.

Radiography

Ultrasonography uses ultrasound waves to look at soft tissues, organs, veins and muscles (as well as babies). X-rays and CT scans use radiation to produce images.

The cost of a CT scan machine in Nigeria can vary widely depending on the brand, model, and features. Generally, prices can range from $60,000 to over $200,000 for new machines. Additionally, refurbished machines may be available at lower prices, typically starting around $30,000. Other factors, such as shipping, installation, and maintenance, can also influence the overall cost.

The cost of a nuclear CT scan, also known as a PET/CT scan, typically ranges from $1,500 to $3,000, depending on factors such as the location, facility, and whether any additional imaging or procedures are required. Insurance coverage can significantly affect out-of-pocket costs, so it's advisable to check with your provider beforehand. Additionally, some hospitals or imaging centers may offer payment plans or discounts for uninsured patients.

A CT scan and a CAT scan refer to the same imaging technique; "CAT" stands for "Computed Axial Tomography." The difference in preparation often arises from the specific area being scanned or the type of contrast material used. For certain CT scans, especially those involving the abdomen or pelvis, patients may need to fast or undergo specific prep to enhance image clarity, whereas other scans might not require such preparations. Always follow your healthcare provider's instructions for the specific scan you are undergoing.

No. The doctor will ask you to urinate during the CT scan itself in order to get an accurate image.

The cost of a brain CT scan typically ranges from $300 to $3,000, depending on factors such as the facility, geographic location, and whether the patient has insurance. Without insurance, patients may face higher out-of-pocket costs, while insurance coverage can significantly reduce the expense. It's advisable to check with specific imaging centers or healthcare providers for accurate pricing and coverage options.