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Contrast & Positions

Contrast Studies and Positioning - VTT 224

Appearance of radiopaque contrast? White
Appearance of radiolucent contrast? Black
What is a survey film? Radiograph done before any contrast is administered.
What are the two types of radiopaque (positive) contrast? Barium sulfate, organic iodides
How long does it take Barium sulfate to travel the entire GI tract? 3+ hours, depends on health/age of the patient
When using both negative and positive contrasts, which is used first? Negative contrast (Adding negative to positive can cause air bubbles).
Contrast used for esophagram? Barium sulfate
Contrast used for gastrogram? Barium sulfate
Contrast used for cystogram? Organic iodide, air
Contrast used for urethrogram? Organic iodide, air
Contrast used for arthrogram? Organic iodide
Contrast used for fistulogram? Organic iodide
Contrast used for myelogram? Organic iodide
Contrast used for angiogram? Organic iodide
Contrast used for excretory urogram? Organic iodide
What are some positioning aids? Troughs, foam wedges, sandbags, tape or ties
What type of contrast do troughs make? Radiolucent
What type of contrast do foam wedges make? Radiolucent
What type of contrast do sandbags make? Radiopaque
What type of contrast does tape or ties make? Radiolucent
Landmarks for lateral thorax radiograph? Center of beam? Cranial- manubrium. Caudal- between xiphod and last rib. Center of beam- Midway between sternum & spine, level with caudal border of scapula.
Landmarks for lateral abdomen radiograph? Center of beam? Cranial- 8-9th intercoastal space. Caudal- greater trochanter of femur. Center of beam- last rib.
Landmarks for hip & pelvic radiograph? Wings of the ilium to mid tibia.
What does OFA stand for? Orthopedic Foundation for Animals
What is the OFA? Voluntary database concerning orthopedic and genetic diseases of animals.
When taking OFA films, what must be included? Lead markers, hospital or DVM's name, date taken, pet's registered name or number
What is the OFA Grading System? Excellent, Good, Fair, Borderline, Mild, Moderate, Severe
Number of vertebrae? Cervical- 7 Thoracis- 13 Lumbar- 7 Sacral- 3
Created by: PimaVT



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