Large Intestine Double Contrast Barium Enema

A method that is widely used for the introduction of the contrast media into the colon is based on a double contrast consisting of barium and air. The liquid component of the contrast media is introduced into the colon by means of gravity. Once the barium has coated the lining of the colon, the barium is mostly drained out of the colon before air is administered. Using the Air-Contrast enema tip and inflator bulb (figure 2-12), air is slowly pumped into the colon either by the radiologist or...

A Aortography Translumbar Percutaneous Direct Method See figure

Patient preparation and administration of sensitivity test. This has been covered earlier in this section. Digital subtraction is used to demonstrate any part of the lower extremity. (a) A sterile layout consisting of the necessary instruments and materials is prepared. (b) The X-Ray table is adjusted in the horizontal position. (c) The patient is placed in the prone position on the x-ray table. An abdominal film (14x17-inch) is exposed and immediately developed. This film...

Reactions To Contrast Media

Intravenously injected contrast media can produce a reaction similar to anaphylactic shock. True anaphylaxis is the result of hypersensitivity to a drug to which the patient previously was not sensitive. For example, the first time a patient receives penicillin, he may show no side effects yet, following a second dose of the same drug, this patient may have an anaphylactic reaction. This is thought to be due to the formation of antibodies against a drug. Reactions to contrast...

Exercises Lesson

INSTRUCTIONS Answer the following exercises by marking the lettered response that best answers the question or best completes the incomplete statement. After you have completed all the exercises, turn to Solutions to Exercises at the end of the lesson and check your answers. For each exercise answered incorrectly, reread the material referenced with the solution. 1. Contrast media are useful where photon absorptions among structures is 2. Radiopaque contrast media are called_, and radiolucent...

D Portal Venography

The methods of performing portal venography vary principally in the way the contrast medium is introduced. (a) Operative method. The contrast medium is introduced through one of the tributaries (for example, right gastroepiploic, superior mesenteric) of the portal vein while exposed during abdominal laparotomy. This method is the only one that will be described here. (b) Occlusal method. The vena cava is momentarily occluded at a specific level by means of a special type of...

Density Equalization Filters

Density equalization filters are special accessory devices used when it is desirable to cause a variation of x-ray intensity across a given beam. When the filter is introduced into the path of the x-ray beam, its intensity is modified in differing degrees over given portions of the file being irradiated figure 1-7 . This is achieved by selective absorption. Figure 1-7. Density equalization filters. Figure 1-7. Density equalization filters. b. These devices are especially effective where the...

The Order Of Procedure Stomach Right Anterior Oblique

Stomach and C-loop of duodenum. A profile image of the duodenum bulb._ 2. Remove artifacts. All clothing removed, excluding underpants. Remove jewelry in area of interest._ 4. Patient Part position Recumbent with the body partially rotated into RAO position, provide pillow for head. a. From a prone position rotate 45 degrees with right anterior body against the film holder or table. b. Right arm down left arm flexed at elbow and by the patient's head. c. Flex left knee...