{"id":12017,"date":"2023-05-12T19:51:19","date_gmt":"2023-05-12T19:51:19","guid":{"rendered":"https:\/\/todaysveterinarynurse.com\/?p=12017"},"modified":"2024-05-15T15:30:11","modified_gmt":"2024-05-15T15:30:11","slug":"small-animal-radiographic-soft-tissue-positioning","status":"publish","type":"post","link":"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/radiology-imaging\/small-animal-radiographic-soft-tissue-positioning\/","title":{"rendered":"Radiographic Soft Tissue Positioning: Part 1"},"content":{"rendered":"<div class=\"su-spacer\" style=\"height:20px\"><\/div><div class=\"su-note\"  style=\"border-color:#d8d8d8;border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;\"><div class=\"su-note-inner su-u-clearfix su-u-trim\" style=\"background-color:#f2f2f2;border-color:#ffffff;color:#333333;border-radius:3px;-moz-border-radius:3px;-webkit-border-radius:3px;\"><b>Abstract<\/b><\/p>\n<p class=\"p1\">Knowing how to produce diagnostic radiographs and understanding all of the factors that affect radiographic appearance will help ensure an accurate diagnosis and appropriate treatment. Proper patient positioning helps achieve optimal radiographs while minimizing radiation exposure.<\/p>\n<p class=\"p1\">Radiation safety is affected by exposure time, distance from the primary beam, and personal shielding. Taking a full series of radiographs is recommended to enhance diagnostic value.<\/p>\n<p><b>Take-Home Points <\/b><\/p>\n<ul>\n<li class=\"p1\">Follow the ALARA (as low as reasonably achievable) principle.<\/li>\n<li class=\"p1\">Use sedation when necessary.<\/li>\n<li class=\"p1\">Understand radiographic terminology.<\/li>\n<li class=\"p1\">Never take just 1 view.<\/li>\n<li class=\"p1\">Know that positioning matters.<\/li>\n<li class=\"p1\">Take the extra time for proper positioning to reduce the need for retakes.<\/li>\n<li class=\"p1\">For the best diagnostic results, take the full radiographic series.<\/li>\n<\/ul>\n<\/div><\/div>\n<p><em><strong>Editor&#8217;s Note:<\/strong><\/em> Read <a href=\"https:\/\/todaysveterinarynurse.com\/radiology-imaging\/radiographic-soft-tissue-positioning-part-2\/\" target=\"_blank\" rel=\"noopener\">Radiographic Soft Tissue Positioning: Part 2 here<\/a>.<\/p>\n<p class=\"p1\"><span class=\"s1\">A <\/span><span class=\"s1\">thorough understanding of the factors that influence diagnostic radiography can help veterinary nurses obtain radiographs that allow for both accurate diagnoses and proper treatment plans for patients. Patient positioning is an important factor that can drastically affect radiographic interpretation. A radiograph of a poorly positioned patient can lead to an inaccurate diagnosis and, consequently, unsuccessful treatment. The veterinary team must, therefore, work together to ensure that each radiograph is truly representative of the patient. <\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">In part 1 of this series, the veterinary team will review the value of patient positioning for thoracic and abdominal radiographs. In part 2, the veterinary team will learn to use a diagnostic imaging quality checklist to aid with proper diagnostic interpretation and patient treatment.<\/span><\/p>\n<h2 class=\"p3\">X-Ray Properties<\/h2>\n<p class=\"p2\"><span class=\"s1\">German physicist Wilhelm R\u00f6ntgen accidentally discovered x-rays in 1895 while working with a covered cathode tube, which fluoresced a screen on the opposite side of his laboratory.<sup>1<\/sup> After more experiments and numerous hours, he discovered a \u201cnew ray\u201d that had very specific properties. He named this unknown and mysterious new type of radiation the \u201cx-ray.\u201d<\/span><\/p>\n<p class=\"p4\"><span class=\"s1\">Today, we know that x-rays<sup>1<\/sup>:<\/span><\/p>\n<ul>\n<li class=\"p5\"><span class=\"s1\">are nonparticulate rays that fall between gamma and ultraviolet rays on the electromagnetic spectrum<\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">are highly penetrating invisible rays that form electromagnetic radiation <\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">are electrically neutral, not affected by electric or magnetic fields<\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">produce a wide variety of energies and wavelengths <\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">release heat as they pass through matter <\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">travel in straight lines <\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">travel at the speed of light in a vacuum <\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">ionize matter <\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">cause fluorescence of specific crystals <\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">are not focused by a lens<\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">affect photographic film<\/span><\/li>\n<li class=\"p5\"><span class=\"s1\">create chemical and biological changes in matter due to ionization and excitation<\/span><\/li>\n<li class=\"p6\"><span class=\"s1\">produce secondary and scatter radiation <\/span><\/li>\n<\/ul>\n<p class=\"p2\"><span class=\"s1\">These properties make them useful as well as dangerous. Radiographs should be ordered by the veterinarian only when medically necessary. X-rays have a short wavelength and are emitted at high frequency, which means that they contain a lot of energy and can penetrate through most matter, including soft tissue, fat, and air.<sup>2<\/sup> Denser materials such as metal and bone absorb more x-rays, while less dense areas allow all x-rays to pass through. The variations in tissue densities, and therefore the number of x-rays transmitted, determine the radiographic opacities or distinction of structures.<sup>2<\/sup><\/span><\/p>\n<h2 class=\"p3\">Radiation Safety<\/h2>\n<p class=\"p2\"><span class=\"s1\">Everyone must be their own advocate when it comes to radiation safety. Understanding and following radiation safety guidelines will help protect the veterinary team and patients from the potential harmful effects of ionizing radiation. The following 3 factors will help ensure radiation safety in the veterinary clinic: time, distance, and shielding.<sup>3<\/sup> Always use the shortest exposure time to decrease the amount of scatter radiation (deflected primary beam x-rays) delivered to the patient and the veterinary team. Take the time to properly position the patient to minimize the number of times you need to retake the images. Use alternative positioning restraint devices (e.g., tape, sandbags, foam wedges) on patients to minimize the number of personnel needed in the room during x-ray exposure (<\/span><span class=\"s2\"><b>FIGURES 1 AND 2<\/b><\/span><span class=\"s1\">). <\/span><\/p>\n<div id=\"attachment_12018\" style=\"width: 360px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig1.png\"><img fetchpriority=\"high\" decoding=\"async\" aria-describedby=\"caption-attachment-12018\" class=\" wp-image-12018\" src=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig1.png\" alt=\"\" width=\"350\" height=\"255\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig1.png 864w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig1-300x219.png 300w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig1-768x560.png 768w\" sizes=\"(max-width: 350px) 100vw, 350px\" \/><\/a><p id=\"caption-attachment-12018\" class=\"wp-caption-text\">Figure 1. Using alternative restraint (tape and sandbags) to help eliminate radiation exposure to personnel.<\/p><\/div>\n<div id=\"attachment_12019\" style=\"width: 359px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig2.png\"><img decoding=\"async\" aria-describedby=\"caption-attachment-12019\" class=\" wp-image-12019\" src=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig2.png\" alt=\"\" width=\"349\" height=\"190\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig2.png 1008w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig2-300x163.png 300w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig2-768x418.png 768w\" sizes=\"(max-width: 349px) 100vw, 349px\" \/><\/a><p id=\"caption-attachment-12019\" class=\"wp-caption-text\">Figure 2. Commonly used alternative restraint devices to help lower personnel radiation exposure. Left to right: weighted head immobilizer, Zonas tape, sand socks of various sizes, and small and extra-large troughs.<\/p><\/div>\n<p class=\"p2\"><span class=\"s1\">If team members must remain in the room, they should keep as far away from the primary beam as possible and wear the appropriate personal protective equipment (PPE).<sup>3<\/sup> Radiology PPE requirements vary by state. Best practice suggests that radiology PPE should include a lead gown (containing 0.5 mm of lead) that wraps halfway around the wearer and covers from the thyroid to the knees, a lead thyroid shield, and full coverage (360 degrees) lead gloves (<\/span><span class=\"s2\"><b>FIGURE 3<\/b><\/span><span class=\"s1\">).<sup>3<\/sup> Use the lowest possible radiation dose needed to obtain diagnostic images by following an appropriately calibrated technique chart.<sup>3<\/sup> <\/span><\/p>\n<div id=\"attachment_12020\" style=\"width: 310px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig3.png\"><img decoding=\"async\" aria-describedby=\"caption-attachment-12020\" class=\" wp-image-12020\" src=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig3.png\" alt=\"\" width=\"300\" height=\"435\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig3.png 2083w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig3-207x300.png 207w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig3-705x1024.png 705w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig3-768x1115.png 768w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig3-1058x1536.png 1058w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig3-1411x2048.png 1411w\" sizes=\"(max-width: 300px) 100vw, 300px\" \/><\/a><p id=\"caption-attachment-12020\" class=\"wp-caption-text\">Figure 3. Best practice radiology personal protective equipment: lead thyroid shield, lead gown, and full-coverage lead gloves.<\/p><\/div>\n<p class=\"p2\"><span class=\"s1\">The ALARA (as low as reasonably achievable) principle involves taking steps to reduce the amount of radiation exposure to the lowest level possible while still achieving a high-quality diagnostic study.<sup>3<\/sup> Following radiation safety guidelines and best practices will minimize the harmful effects of ionizing radiation to the veterinary team and the patient. <\/span><\/p>\n<h2 class=\"p3\">Directional Terminology<\/h2>\n<p class=\"p2\"><span class=\"s1\">The nomenclature for radiographic projections has been standardized by the American College of Veterinary Radiology.<sup>4<\/sup> Names of radiographic views are based on the trajectory of the x-ray beam as it travels from the tube, through the patient, and to the recording receptor. <\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">The name of the view begins with the primary beam\u2019s point of entry and ends with its point of exit, relative to the position of the patient.<sup>4<\/sup> For example, when the patient is in dorsal recumbency, the radiographic view name will be ventrodorsal for an abdominal or thoracic series because the x-ray beam enters the patient\u2019s ventral surface and exits the patient\u2019s dorsal surface. <\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">The nomenclature for lateral thoracic and abdominal views in small animal radiography, however, is abbreviated to just the point of exit of the primary beam.<sup>5<\/sup> For example, a left-right lateral view of the patient\u2019s thorax or abdomen is abbreviated to describe the beam\u2019s point of exit as the right lateral side of the patient. <\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">Because each area of interest (AOI) has many names, the entire veterinary team should be familiar with proper anatomical and directional terminology to ensure correct radiographic views are achieved (<\/span><span class=\"s2\"><b>TABLE\u00a01 AND FIGURE 4<\/b><\/span><span class=\"s1\">). One should also be cautious; the commonly used abbreviation is not always correct.<\/span><\/p>\n<p><a href=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Table1.png\"><img loading=\"lazy\" decoding=\"async\" class=\"aligncenter size-full wp-image-12028\" src=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Table1.png\" alt=\"\" width=\"2027\" height=\"903\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Table1.png 2027w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Table1-300x134.png 300w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Table1-1024x456.png 1024w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Table1-768x342.png 768w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Table1-1536x684.png 1536w\" sizes=\"(max-width: 2027px) 100vw, 2027px\" \/><\/a><\/p>\n<div class=\"su-image-carousel  su-image-carousel-has-spacing su-image-carousel-crop su-image-carousel-crop-4-3 su-image-carousel-has-lightbox su-image-carousel-has-outline su-image-carousel-adaptive su-image-carousel-slides-style-default su-image-carousel-controls-style-dark su-image-carousel-align-none\" style=\"\" data-flickity-options='{\"groupCells\":true,\"cellSelector\":\".su-image-carousel-item\",\"adaptiveHeight\":false,\"cellAlign\":\"left\",\"prevNextButtons\":true,\"pageDots\":false,\"autoPlay\":5000,\"imagesLoaded\":true,\"contain\":true,\"selectedAttraction\":0.025,\"friction\":0.28}' id=\"su_image_carousel_69e8eb85be699\"><div class=\"su-image-carousel-item\"><div class=\"su-image-carousel-item-content\"><a href=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4A.png\" target=\"_blank\" rel=\"noopener noreferrer\" data-caption=\"Figure 4. Directional terminology.\"><img loading=\"lazy\" decoding=\"async\" width=\"930\" height=\"663\" src=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4A.png\" class=\"\" alt=\"\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4A.png 930w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4A-300x214.png 300w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4A-768x548.png 768w\" sizes=\"(max-width: 930px) 100vw, 930px\" \/><span>Figure 4. Directional terminology.<\/span><\/a><\/div><\/div><div class=\"su-image-carousel-item\"><div class=\"su-image-carousel-item-content\"><a href=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4B.png\" target=\"_blank\" rel=\"noopener noreferrer\" data-caption=\"Figure 4. Directional terminology.\"><img loading=\"lazy\" decoding=\"async\" width=\"933\" height=\"665\" src=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4B.png\" class=\"\" alt=\"\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4B.png 933w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4B-300x214.png 300w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig4B-768x547.png 768w\" sizes=\"(max-width: 933px) 100vw, 933px\" \/><span>Figure 4. Directional terminology.<\/span><\/a><\/div><\/div><\/div><script id=\"su_image_carousel_69e8eb85be699_script\">if(window.SUImageCarousel){setTimeout(function() {window.SUImageCarousel.initGallery(document.getElementById(\"su_image_carousel_69e8eb85be699\"))}, 0);}var su_image_carousel_69e8eb85be699_script=document.getElementById(\"su_image_carousel_69e8eb85be699_script\");if(su_image_carousel_69e8eb85be699_script){su_image_carousel_69e8eb85be699_script.parentNode.removeChild(su_image_carousel_69e8eb85be699_script);}<\/script>\n<p class=\"p2\"><span class=\"s1\">To ensure that a proper diagnosis can be made, best practice is to take at least 2 orthogonal views (i.e., 90\u00a0degrees from each other) of each AOI. Radiographs are 2-dimensional representations of 3-dimensional anatomy, and often relevant anatomical structures are superimposed with or overlap each other, which can be challenging when assessing the AOI. Having at least 1\u00a0orthogonal view enables visualization of the patient in another position and helps with localization of structures or lesions to facilitate a thorough and accurate radiographic interpretation.<sup>5<\/sup><\/span><\/p>\n<h2 class=\"p3\">Radiographic Soft Tissue Studies<\/h2>\n<p class=\"p2\"><span class=\"s1\">To ensure finished radiographs do not contain radiographic artifacts, distortions, or inaccuracies, veterinary nurses need to be familiar with radiographic studies for each AOI: abdominal and thoracic. <\/span><\/p>\n<h3 class=\"p7\">Abdominal Radiographs<\/h3>\n<p class=\"p2\"><span class=\"s1\">Abdominal radiographs are helpful for diagnosing and monitoring conditions that affect the abdominal organs. These radiographs enable the veterinarian to visualize the size, shape, and position of the organs within the abdomen and to identify any abnormalities (e.g., masses, gastrointestinal [GI] foreign objects).<sup>5 <\/sup>To ensure a proper radiographic diagnosis, the full abdominal cavity must be included on the image. The cranial point of the abdominal cavity is the cranial tip of the liver and adjacent diaphragm, and the caudal point is the greater trochanter of the femur.<sup>5<\/sup> These anatomical landmarks coincide with the palpable landmarks of 3 ribs cranial to the xiphoid (<\/span><span class=\"s2\"><b>FIGURE 5<\/b><\/span><span class=\"s1\">) and the bony prominence of the proximal femur. The L\u00a0technique is a way of identifying the landmarks of the cranial abdomen. For this technique, place the tip of your thumb on the caudal edge of the xiphoid and collimate (narrow) the x-ray beam to the pointer finger, which will indicate the cranial abdominal landmark (tip of the liver). Abdominal radiographs should be taken during expiration, when the diaphragm is pulled cranially, increasing the separation of, and therefore creating greater differentiation between, the abdominal organs (<\/span><span class=\"s2\"><b>FIGURE 6<\/b><\/span><span class=\"s1\">).<sup>5<\/sup> <\/span><\/p>\n<div id=\"attachment_12023\" style=\"width: 460px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig5.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12023\" class=\" wp-image-12023\" src=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig5.png\" alt=\"\" width=\"450\" height=\"252\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig5.png 855w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig5-300x168.png 300w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig5-768x430.png 768w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/a><p id=\"caption-attachment-12023\" class=\"wp-caption-text\">Figure 5. Full radiographic exposure of the abdomen. The palpable abdominal landmarks help ensure that the full abdominal cavity is included in the finished radiograph, from 3 rib spaces cranial to the xiphoid, including the full liver (yellow line), and caudally to the greater trochanter (yellow arrow).<\/p><\/div>\n<div id=\"attachment_12024\" style=\"width: 461px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig6.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12024\" class=\" wp-image-12024\" src=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig6.png\" alt=\"\" width=\"451\" height=\"243\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig6.png 857w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig6-300x162.png 300w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig6-768x414.png 768w\" sizes=\"(max-width: 451px) 100vw, 451px\" \/><\/a><p id=\"caption-attachment-12024\" class=\"wp-caption-text\">Figure 6. Abdominal radiograph of a dog taken during expiration: diaphragm cranial (yellow line).<\/p><\/div>\n<p class=\"p2\"><span class=\"s1\">Best practice for abdominal radiographs is to take 3\u00a0views: right lateral, left lateral, and ventrodorsal.<sup>5<\/sup> These views are necessary because gas within the GI tract (particularly the stomach) will shift between recumbency positions, thereby highlighting different portions of the anatomy. The right lateral view highlights the left-sided (non\u2013gravity dependent) gastric fundus and body.<sup>5<\/sup> The right lateral view is also the view of choice for patients with <a href=\"https:\/\/todaysveterinarypractice.com\/gastroenterology\/diagnosing-canine-abdominal-organ-torsions-twisted-in-every-way\/\" target=\"_blank\" rel=\"noopener\">gastric dilatation and volvulu<\/a>s.<sup>5<\/sup> The left lateral view highlights the pyloric antrum, pyloric canal, and duodenum, which is useful for identifying foreign material.<sup>5<\/sup> The ventrodorsal view is preferable to the dorsoventral view because it creates less superimposition of the abdominal structures.<sup>5<\/sup><\/span><\/p>\n<h3 class=\"p7\">Thoracic Radiographs<\/h3>\n<p class=\"p2\"><span class=\"s1\">Thoracic radiographs are used to diagnose problems of the <a href=\"https:\/\/todaysveterinarypractice.com\/clinical_topics\/respiratory-medicine\/\" target=\"_blank\" rel=\"noopener\">pulmonary system<\/a> (e.g., infections, masses, congenital abnormalities) or <a href=\"https:\/\/todaysveterinarynurse.com\/clinical_topics\/cardiology\/\" target=\"_blank\" rel=\"noopener\">cardiovascular system<\/a> (e.g., cardiac enlargement, congenital abnormalities).<sup>6 <\/sup><\/span><\/p>\n<p class=\"p2\"><span class=\"s1\">Proper diagnosis can be made only if the full thoracic cavity is evaluated. Thoracic collimation must include<span class=\"Apple-converted-space\">\u00a0 <\/span>the thoracic inlet cranially to the last rib caudally.<sup>6<\/sup> The palpable cranial landmark is the manubrium and the palpable caudal landmark is the curve of the last rib. The corresponding visual landmarks on the finished radiograph are the cranial point of the manubrium and the first lumbar vertebra (<\/span><span class=\"s2\"><b>FIGURE 7<\/b><\/span><span class=\"s1\">). With few exceptions, thoracic radiographs should be taken during peak inspiration, when the diaphragm is pulled caudally and the lungs are maximally inflated (<\/span><span class=\"s2\"><b>FIGURE\u00a08<\/b><\/span><span class=\"s1\">), which enables evaluation of the caudoventral lung field between the heart and the liver.<sup>6<\/sup><\/span><\/p>\n<div id=\"attachment_12025\" style=\"width: 460px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig7.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12025\" class=\" wp-image-12025\" src=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig7.png\" alt=\"\" width=\"450\" height=\"254\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig7.png 865w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig7-300x169.png 300w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig7-768x433.png 768w\" sizes=\"(max-width: 450px) 100vw, 450px\" \/><\/a><p id=\"caption-attachment-12025\" class=\"wp-caption-text\">Figure 7. Full radiographic exposure of the thorax. To be sure to get the full thoracic cavity in the image, palpate the thoracic inlet (manubrium) cranially and the attachment of the last rib (T-13) caudally and collimate the x-ray beam to the area of interest.<\/p><\/div>\n<div id=\"attachment_12026\" style=\"width: 459px\" class=\"wp-caption aligncenter\"><a href=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig8.png\"><img loading=\"lazy\" decoding=\"async\" aria-describedby=\"caption-attachment-12026\" class=\" wp-image-12026\" src=\"https:\/\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig8.png\" alt=\"\" width=\"449\" height=\"334\" srcset=\"https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig8.png 865w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig8-300x223.png 300w, https:\/\/navc.sitepreview.app\/todaysveterinarynurse.com\/wp-content\/uploads\/sites\/3\/2023\/05\/Shaw_RadiologyPositioning_TVNSummer23_Fig8-768x571.png 768w\" sizes=\"(max-width: 449px) 100vw, 449px\" \/><\/a><p id=\"caption-attachment-12026\" class=\"wp-caption-text\">Figure 8. Thoracic radiograph of a dog taken during inspiration: diaphragm caudal (yellow line).<\/p><\/div>\n<p class=\"p2\"><span class=\"s1\">To ensure a proper radiographic diagnosis, a full series of thoracic cavity images should be evaluated. The 4\u00a0suggested thoracic views are left lateral, right lateral, ventrodorsal, and dorsoventral.<sup>6<\/sup> The right lateral view highlights the left lung lobes due to atelectasis or collapsing of the dependent right lung lobes, caused by gravity and the body\u2019s weight on the down side.<sup>6<\/sup> The left lateral view conversely highlights the right lobes.<sup>6<\/sup> The ventrodorsal view is taken to fully evaluate both the right and left lung lobes and to provide an orthogonal view to localize pathology.<sup>6<\/sup> For cardiovascular evaluation, the dorsoventral view is typically added to the series to aid with visualization of the vessels of the caudal lung lobes.<sup>6<\/sup> Together these views help the veterinarian differentiate abnormalities within the thoracic cavity. <\/span><\/p>\n<h2 class=\"p3\">Summary<\/h2>\n<p class=\"p2\"><span class=\"s1\">Diagnostic radiographs of patients require planning, teamwork, and patience. One should always practice ALARA and hands-free radiography whenever possible. All veterinary team members in the radiology room must wear PPE during the x-ray exposure period. Using best-practice radiographic positioning skills will help the veterinarian arrive at appropriate diagnoses and treatment plans for patients. <\/span><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Using best-practice radiographic positioning skills will help the veterinarian arrive at appropriate diagnoses and treatment plans for patients.<\/p>\n","protected":false},"author":236,"featured_media":12027,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"iawp_total_views":0,"footnotes":""},"categories":[238],"tags":[145],"class_list":["post-12017","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-summer-2023","tag-peer-reviewed","column-skills-check","clinical_topics-radiology-imaging"],"acf":{"hide_sidebar":false,"hide_sidebar_ad":false,"hide_all_ads":false},"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.7 (Yoast SEO v27.4) - 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