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Tag Archives: Contrast Examinations
What is Dacryocystography ?
-term used to denote radiologic examination of nasolacrimal drainage system -done by filling the lumina of the canals with radiopaque medium -performed in the investigation of abnormalities of the passage as defective development, stenosis and chronic mucosal thickening Examination Procedure This preliminary radiograph are taken to evaluate the paranasal sinuses Waters Caldwell Lateral to expedite filming after the introduction of contrast medium, injection is carried out with patient seated before a vertical grid device patient may however be placed in supine position for introduction of medium and prone position for filming after anesthetizing the conjunctiva and puncta, physician dilates the Click Here To Read More
Contrast Media Used In Imaging Studies
Medical contrast media are substances that are used to enhance the contrast of structures or fluids within the body in medical imaging. Several types of contrast medium are in used in medical imaging and they can be roughly classified based on the imaging modalities where they are used. Although other types exist, most common contrast agents work based on X-ray attenuation and magnetic resonance signal enhancement. Iodine Iodine based contrast media such as Urografin or Omnipaque is used most commonly in radiology, due to its relatively harmless interaction with the body and it solubility. It is primarily used to visualise Click Here To Read More
Voiding Cystourethrography
- radiographic contrast study of the urinary bladder and urethra while the patient is voiding. Patient Preparations – let the patient empty the bladder completely Materials – CM – iodinated compound – 50 ml – Sterile water – 200-300 cc – Catheter – Syringe – Container – Gloves Procedure 1. scout film – pelvis AP 2. insert catheter to the urethra 3. introduction of diluted CM (up to 200 cc) 4. remove catheter 5. position px 35 degrees oblique facing the cassette/film 6. outer leg is slightly flexed 7. take exposure (CR at the level of symphysis pubis) while the Click Here To Read More
