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Contrast Examinations > Contrast Medium > Flashcards

Contrast Medium Flashcards

1
Q

Most commonly used air contrast media?

A

Calcium carbonated crystal (Gastroluft)

Magnesium Citrate Room Air

Carbonated Beverages

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1
Q

Uses two kinds of contrast media for the study?

A

Double contrast study

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2
Q

How to make paste mixture barium sulfate?

A

3/4 BaSO4 with 1/4 H2O

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3
Q

What contrast agent is radiopaque?

A

Positive Contrast Agents

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4
Q

What type of barium suspension should be prepared for a S.I.S. Study?

A

Thick mixture

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5
Q

Examples of Iodized Oil (non-absorbable) contrast media?

A

Lipiodol and Iodochlorol (used in examinations of salivary glands)

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5
Q

What are the rules in giving contrast media?

A

Confirm Identity of patient by asking and checking the chart.

Ensure correct contrast medium is used and is applied at the right time

Ensure the right amount, and variant of contrast is used.

Never hold the tablet or powder form with your bare hands

Record on the chart the amount of contrast, name of contrast used with initials on the chart.

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5
Q

How to make milk mixture barium sulfate?

A

2 Tbsp BaSO4 with a glass of water

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6
Q

What does U.G.I.S. stand for?

A

Upper Gastrointestinal Series

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7
Q

How to make thick mixture barium sulfate?

A

1/2 BaSO4 mixed with 1/2 H2O

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7
Q

Suspension that cannot be dissolved in water?

A

Colloidal Suspension

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8
Q

Uses two kinds of contrast media in different manner of introduction for the study?

A

Dual contrast study

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9
Q

Examples of inorganic iodides contrast media?

A

Sodium, Potassium and Silver Iodides (used in Pyelography or Urography)

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9
Q

Enumerate the disadvantages of using BaSO4?

A

Colloidal Suspension

Contra-Indication

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11
Q

Give an example of Positive contrast agents?

A

Barium Sulfate or Water-soluable Iodine Contrast Media

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12
Q

Contrast agents that partially absorb x-rays appearing black on a radiograph?

A

Negative Contrast Agents

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13
Q

Examples of Organic Iodides contrast media?

A

Telepaque/Iopanoic Acid (used in Cholecystography and Angiography)

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13
Q

What are the qualities of Barium sulfate?

A

High atomic number

Relatively Cheap

Less irritating

Non-absorbable

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15
Q

Substances having high or low atomic number compared to adjacent structures that are administered to the body to fill a hollow organ to make it visible on film and differentiate densities inside the body?

A

Contrast media

16
Q

How to make thin mixture barium sulfate?

A

1/4 BaSO4 mixed with 3/4 H2O

17
Q

What type of barium suspension should be prepared for a cardiac series exam?

A

Thick mixture

19
Q

What contrast agents is radiolucent?

A

Negative Contrast Agents

19
Q

Enumerate the types of radiographic contrast studies?

A

Single Contrast Study Double Contrast Study Dual Contrast Study Mucosal Phase Study Filling Phase Study

20
Q

Alternative name for scout film?

A

Survey film

Preliminary Film

Plain Film

Initial Film

21
Q

Uses one kind of contrast media for the study?

A

Single contrast study

21
Q

What is the purpose of scout films?

A

Check for proper preparation of patient Check for correct position of organ to be examined To draw out the presence of foreign bodies and other classifications To compare the film with contrast media with that of the scout film To adjust the correct factor to be used To localize the exact localization point;

22
Q

A small amount of contrast media is used just to coat or paint the lining membrane of the hollow oran under study?

A

Mucosal Phase study

24
Q

Examples of Heavy Metallic Salts contrast media?

A

Barium Sulfate (used in Barium Enemas and gastro-intestinal series)

25
Q

Enumerate the forms of Parenteral administration of contrast media?

A

Intravenous

Intrathecal

Intra-arterial

26
Q

Two contraindications for BaSO4 studies?

A

Perforations suspected

Scheduled surgeries after examination of Lower G.I. Tract

28
Q

Enumerate the forms of Intubation administration of contrast media?

A

T-tubes

Nasogastric Catheters

30
Q

Enumerate the types of barium sulfate mixtures?

A

Paste Mixture

Thick Mixture

Thin Mixture

Milk Mixture

32
Q

Examples of Iodized Oil (absorbable) contrast media?

A

Pantopaque and Dionosil (used in bronchography)

32
Q

Renders white images on the film because it is a positive contrast medium, having a high atomic number. A non absorbable contrast medium which can cause constipation when it stays for a long period inside the colon?

A

Barium Sulfate (BaSO4)

33
Q

Qualities of good contrast media?

A

Clearly shows structures creating a different marked contrast with the density of surrounding tissue

Physiologically inert

Produce as little toxicity as possible in patient

Must be eliminated unchanged.

34
Q

A full dose of contrast media is used for a study of general outline, shape, size, position, position as well as the anatomical contour and morphological deformities?

A

Filling Phase study

35
Q

Enumerate the 6 most commonly used substances as contrast media?

A

Air/Gasses

Heavy Metallic Salts

Inorganic Iodides

Organic Iodides

Iodized Oil (non-absorbable)

Iodized Oil (absorbable)

37
Q

What type of barium suspension should be prepared for a Barium Enema?

A

Thin mixture

39
Q

Contrast agents that absorb x-rays appearing white on a radiograph?

A

Positive Contrast Agents

40
Q

What type of barium suspension should be prepared for an Esophagram?

A

Paste mixture

41
Q

Enumerate the forms of contrast media?

A

Solution (oil or water soluable)

TabletGranules or powders

42
Q

Enumerate the types of contrast media?

A

Radiopaque or Positive Contrast Agents

Radiolucent or Negative Contrast Agents

43
Q

What type of barium suspension should be prepared for a U.G.I.S. study?

A

Thick mixture

44
Q

Enumerate the methods of administration of contrast?

A

Oral

Parenteral

Intubation

Rectal

45
Q

Examples of Air/Gas contrast media?

A

Oxygen and Carbon Dioxide (used in pneumoencephalography)

Contrast Examinations (4 decks)

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