What´s Computer Tomagraphy? CT Scan

CT scan mode and scanner type - CAP Computerized tomography (CT) uses ionizing radiation and a detector to form a cross-sectional image that can be reconstructed to generate a systematic representation of the projection data of the region of interest ( Goldman 2007). Currently, third generation multi-slice spiral CT (MSCT) is widely used clinically to diagnose patients. There are various CT scanner types and modes with different physical properties and characteristics, each with its associated advantages and disadvantages (Van Straten et al.

Computed tomography of the abdomen, chest and pelvis (also known as CT or CAT scan). An imaging diagnostic method that combines X-rays and computer technology to generate an image of the body (commonly referred to as a slice). In CT scan, detailed images of every part of the body such as bones, muscles, fat, organs are displayed. CT scans are more detailed than common x-rays. Positron emission tomography (PET) scan Radioactive labeling glucose (sugar) is injected into the bloodstream. Tissues that use more glucose than normal tissue (eg, tumor) can be detected by the scanner. PET scanned images are not as fine as CT or MRI scans, but even when they are not displayed in other tests, they may indicate regions where cellular activity is increasing anywhere in the body. PET scans can be used to find small tumors or to confirm that treatment of known tumors is effective.

Modern medicine is far beyond X - rays. In medical imaging diagnosis of Fredericksburg, ultrasound, mammography, CT scan, several kinds of MRI, PET scan, PET-CT scan were performed. In addition to x-rays, the two most common tests are CT scan and MRI. Both provide more detailed information than X-rays. If special imaging is required, it is useful to understand CT scanning and MRI operation and usage. In some respects, the two tests are similar to each other. They all show cross-sectional pictures of the body, but they do this with different techniques. CT (computed tomography) generates cross-sectional images using a plurality of X-rays captured at different angles. Magnetic resonance imaging (MRI) uses a magnetic field and a radio frequency. Due to technical differences, the test displays the same part of the body in different ways and chooses according to the possible diagnosis

MRI represents magnetic resonance imaging. In this scan, magnetic field, radio wave, computer function enhancement is used to obtain better brain structure and functional images than CT scan. The "nucleus" once called MRI was abandoned because of the concern that people think that there are radioactive substances and radioactive substances do not exist. Unlike conventional X-ray images and CT scans, MRI is a method of taking images of various parts of the body without using X-rays. The MRI scanner consists of a large and strong magnet with the patient. The radio antenna is used to send a signal to the body and then receive that signal. These "radio signals" are actually changing, or they are changing magnetic fields much weaker than the stable strong magnetic field of the main magnet. These return signals are converted to images by the computer connected to the scanner.