Health & Medical Medicine

The Importance of Radiology in Medicine

Radiology imaging finds wide applications in diagnosing illnesses. It has MRI, CT and X-ray radiography within its fold.

Radiology imaging is used in medicine. The imaging study is used to find out and treat disease visualized within the human body. The technology finds wide applications and is found in any standard diagnostic center anywhere in the world.

A Sydney Radiology professional is usually adept in the full spectrum of application technologies like Magnetic Resonance Imaging or MRI, Computed Tomography or CT and X-ray radiography. The medical imaging process is generally conducted by a radiologic technologist or radiographer.

Fluoroscopy is a special application of X-ray imaging. In this process, a fluorescent screen and image intensifier tube is joined to a close-circuit television system. This permits real time imaging of structures in motion. This can be augmented with a radio-contrast agent. This agent is generally administered when the patient swallows or is injected. It is done to delineate anatomy and functioning of the blood vessels, the gastrointestinal tract and the genitourinary system.

In fluoroscopy radiology imaging, two contrasting agents are frequently used: Iodine and Barium Sulfate. Iodine is given to the patient by oral, intra-arterial, rectal or intravenous routes. Barium Sulfate is given orally or rectally for the examination of the GI tract. These agents scatter or strongly absorb X-rays and in combination with real time imaging permit the demonstration of dynamic processes- like blood flow in veins and arteries. Iodine contrast is found to be concentrated in abnormal areas more or less than in normal tissues. This makes tumor, cysts and other abnormalities more prominent.

Computed Tomography or CT utilizes X-rays in combination with computing algorithms to make an image of the body. In Computerized Tomography, the X-ray tube opposite an X-ray detector in a ring shaped apparatus rotate around the patient. This produces a tomogram or computer generated cross sectional image. CT is acquired in the axial plane. For a better delineation of anatomy, Radiocontrast agents are used in conjunction with CT. The process exposes the patient to more ionizing radiation compared to a radiograph.

Many Radiology Sydney companies uses spiral multidetector CTs. They use eight, sixteen, sixty-four or more detectors during continuous motion of the patient through the radiation beam to obtain much finer detail images in comparatively quicker time. If rapid administration of intravenous contrast during the CT scan is done, the fine detail images can be reconstructed into three dimensional or 3D images of cerebral, coronary, carotid or other arteries.

Many southern Radiology clinics have found that CT scanning has become a preferred test method for diagnosing emergent and urgent conditions. This includes pulmonary embolism, cerebral hemorrhage, appendicitis, aortic dissection and obstructing kidney stones. Rapid advancement in CT technology has ensured faster scanning times and improved resolution.

In Radiology Imaging, Magnetic Resonance Imaging or MRI uses strong magnetic fields to align atomic nuclei within body tissues. It then uses a radio signal to disturb the rotational axis of these nuclei and then observes the radio frequency signal generated as the nuclei return to their baseline states. The advantage of MRI is that it produces images in coronal, sagittal, axial and multiple oblique planes easily.

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