1.0Glossaryhttps://www.healthbenefitstimes.com/glossaryGlossaryhttps://www.healthbenefitstimes.com/glossary/author/adminglossary/rich600338<blockquote class="wp-embedded-content" data-secret="lhBk5jKgcb"><a href="https://www.healthbenefitstimes.com/glossary/imaging-techniques/">Imaging techniques</a></blockquote><iframe sandbox="allow-scripts" security="restricted" src="https://www.healthbenefitstimes.com/glossary/imaging-techniques/embed/#?secret=lhBk5jKgcb" width="600" height="338" title="“Imaging techniques” — Glossary" data-secret="lhBk5jKgcb" frameborder="0" marginwidth="0" marginheight="0" scrolling="no" class="wp-embedded-content"></iframe><script> /*! This file is auto-generated */ !function(d,l){"use strict";l.querySelector&&d.addEventListener&&"undefined"!=typeof URL&&(d.wp=d.wp||{},d.wp.receiveEmbedMessage||(d.wp.receiveEmbedMessage=function(e){var t=e.data;if((t||t.secret||t.message||t.value)&&!/[^a-zA-Z0-9]/.test(t.secret)){for(var s,r,n,a=l.querySelectorAll('iframe[data-secret="'+t.secret+'"]'),o=l.querySelectorAll('blockquote[data-secret="'+t.secret+'"]'),c=new RegExp("^https?:$","i"),i=0;i<o.length;i++)o[i].style.display="none";for(i=0;i<a.length;i++)s=a[i],e.source===s.contentWindow&&(s.removeAttribute("style"),"height"===t.message?(1e3<(r=parseInt(t.value,10))?r=1e3:~~r<200&&(r=200),s.height=r):"link"===t.message&&(r=new URL(s.getAttribute("src")),n=new URL(t.value),c.test(n.protocol))&&n.host===r.host&&l.activeElement===s&&(d.top.location.href=t.value))}},d.addEventListener("message",d.wp.receiveEmbedMessage,!1),l.addEventListener("DOMContentLoaded",function(){for(var e,t,s=l.querySelectorAll("iframe.wp-embedded-content"),r=0;r<s.length;r++)(t=(e=s[r]).getAttribute("data-secret"))||(t=Math.random().toString(36).substring(2,12),e.src+="#?secret="+t,e.setAttribute("data-secret",t)),e.contentWindow.postMessage({message:"ready",secret:t},"*")},!1)))}(window,document); //# sourceURL=https://www.healthbenefitstimes.com/glossary/wp-includes/js/wp-embed.min.js </script> Techniques (such as CAT scan, MRI, X rays, ultrasound, and radioactive scans) that permit visualizing (seeing) areas of the body.These are methods that generate images of structures inside the body.The most widely used and straightforward techniques are X-rays, also known as plain X-rays, which provide views of dense structures like bones. Common X-ray examinations involve the chest, skull, and limbs after an injury.Contrast X-rays involve introducing a substance into the body that is opaque to X-rays. Various techniques utilize this approach, including barium X-ray examinations (for the oesophagus, stomach, and intestine); cholecystography (to visualize the gallbladder and common bile duct); bronchography (for the airways connecting the windpipe to the lungs); angiography and venography (for imaging blood vessels); intravenous urography (to view the kidneys and urinary tract); and ERCP (where the pancreatic duct and biliary system are examined by introducing a contrast medium through an endoscope).Numerous X-ray techniques have been replaced by newer procedures that are easier to conduct and offer improved safety and comfort for the patients.Ultrasound scanning employs high-frequency sound waves transmitted through the body via a transducer placed against the skin. The waves are reflected differently by structures of varying density, and the resulting echo pattern is electronically recorded on a screen. Nowadays, ultrasound scanning can generate three-dimensional images and moving visuals, revealing phenomena such as the opening and closing of a valve or blood flow within a vessel.Numerous scanning techniques rely on computers to process raw imaging data and generate the final image. In computed tomography (CT) scanning, X-rays are directed through the body at various angles. The computer analyzes the data to create cross-sectional images (referred to as "slices") of the examined tissues. Modern CT scanners can employ a spiral technique to produce three-dimensional images of structures.During MRI (magnetic resonance imaging), the patient is positioned inside a powerful magnetic field within the scanner, and radiofrequency waves pass through the body. A computer analyzes the alterations in the magnetic alignment of the nuclei in the hydrogen cells, resulting in either a cross-sectional or a three-dimensional image of the tissues. This technique offers better contrast between normal and abnormal tissues compared to CT scanning.PET scanning (positron emission tomography scanning) includes the administration of short-lived radioisotopes into the brain tissues. A computer then analyzes the paths of the gamma rays emitted by these radioisotopes, providing valuable information about both the structure and function of the brain.In radionuclide scanning, a gamma camera captures radiation emitted from tissues that have been exposed to a radioactive substance. The recorded data is transformed into images by a computer, which can provide additional information from the results. Various radioactive substances are absorbed to different extents by different tissues, enabling the study of specific organs in isolation.