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Nuclear Medicine > Respiratory Scintigraphy > Flashcards

Respiratory Scintigraphy Flashcards

1
Q

Blood flow to the Lungs.

A

Lung Perfusion

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2
Q

Air flow to the Lungs.

A

Lung Ventilation

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3
Q

If perfusion defects match with same areas as ventilation defects.

A

COPD

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4
Q

If there is a presence of blood flow blockage.

A

Pulmonary Embolism

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5
Q

If there is a presence of air flow blockage.

A

Atelectasis

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6
Q

Any substance that causes obstruction.

A

Emboli

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7
Q

COPD means..

A

Chronic Obstructive Pulmonary Disorder

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8
Q

Contraindications of Lung Perfusion

A
  1. Should not be performed to pxs with pulmonary hypertension.
  2. Pxs with known active Pneumonia
  3. Hypersensitivity to human serum albumin
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9
Q

Radiopharmaceutical used in Lung Perfusion.

A

a. Tc-99m Macroaggregated Albumin

b. Tc-99m Human Albumin Microspheres

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10
Q

Route of administration of radiopharm in Lung Perfusion.

A

Intravenous

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11
Q

Adult dose for Lung Perfusion.

A

2-6 mCi

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12
Q

Pediatric dose for Lung Perfusion.

A

Adults Dose x [(age+1)/(age+7)]

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13
Q

Camera used for Lung Perfusion.

A

Dual Head Gamma Camera; Large FOV

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14
Q

2 Imaging Methods in Lung Perfusion:

A

a. Dynamic

b. Static

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15
Q

Dynamic imaging method in lung perfusion displays..

A

1-3 secs./frame; 60-120 secs. Detector in posterior alignment.

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16
Q

Static imaging method in lung perfusion displays..

A

500,000-1,000,000 counts each image.

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17
Q

Positions of px in Lung Perfusion.

A

Supine, arms on sides or upright.

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18
Q

Positions of camera in Lung Perfusion.

A

a. Anterior and Posterior
b. Lateral
c. Oblique

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19
Q

Collimator used in Lung Perfusion.

A

Low Energy All Purpose

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20
Q

Hotspots mean..

A

Active bone marrow/blood formation.

21
Q

Coldspots mean..

A

Embolism/Obstruction

22
Q

Position that allows better lung base visualization.

A

Upright Position

23
Q

Show slight gradient from posterior to anterior reflecting greater perfusion to dependent portions of the lungs.

A

Supine Position

24
Q

Sign of activity that means COPD.

A

Stripe Sign

25
Q

Presents as a zone of preserved peripheral perfusion.

A

Stripe Sign

26
Q

Matching defects of ventilation means (4)..

A
  1. COPD
  2. Bullae
  3. Emphysema
  4. Lung Dysfunction
27
Q

Presents as increased lung size.

A

Emphysema

28
Q

Presents as complete absent activity.

A

Bronchogenic Carcinoma

29
Q

Sign of activity that means Bronchogenic Carcinoma.

A

Edge Sign

30
Q

Is indicated as lack of activity ate the base of the lung.

A

Pleural Effusion

31
Q

Sign of activity that means Pleural Effusion.

A

Fissure Sign

32
Q

Reverse mismatch, missing areas in ventilation, filled in on perfusion shows possible..

A

Pneumonia or Atelectasis

33
Q

Presents as diffusely heterogeneous perfusion with many small perfusion abnormalities.

A

Pulmonary Arterial Hypertension

34
Q

One lung presenting on ventilation but not on perfusion may be..

A
  1. Congenital absence of Pulmonary Artery
  2. Massive Central Pulmonary Embolus
  3. Mediastinal Fibrosis
  4. Hilar Neoplasm
35
Q

One lung not presenting or presenting very poorly on ventilation and presenting lightly in perfusion indicates..

A

a. Collapsed Lung

b. Complete or Partial Bronchial Obstruction

36
Q

Common indications of Lung Perfusion.

A

Evaluation of..

  1. Pulmonary Embolism
  2. Pulmonary Perfusion
  3. COPD
  4. Chest Pain
  5. Shortness of Breath
  6. Low Blood Oxygen Saturation
  7. Bronchial Carcinoma
  8. Perfusion affected by Emphysema
  9. Chronic Bronchitis
  10. Asthma
  11. Inflammatory and Cardiac Disease
  12. Lung Transplantation
37
Q

Common indications of Lung Ventilation

A

Evaluation of..

  1. Pulmonary Emoblism in conjunction with lung perfusion.
  2. Obstructed or constricted airways, alveolar spaces and air distribution
  3. Chest Pain
  4. Pulmonary Retention
  5. Low Oxygen Saturation
  6. ARDS (Acute Respiratory Distress Syndrome)
  7. Amphysema
  8. Inflammation
  9. Chronic Bronchitis
  10. Pneumonia
  11. Tracheobronchial Epithelium Function
  12. Lung Carcinoma
  13. Bronchial Obstruction
38
Q

Terminal end of respiration.

A

Alveoli

39
Q

Terminal end of circulation.

A

Capillaries

40
Q

Radiopharmaceutical used in Lung Ventilation.

A
  1. Tc-99m DTPA (Diethylenetriaminepentaaceticacid)

2. Xe-133 gas

41
Q

Route of administration of radiopharm in Lung Ventilation.

A

Inhalation

42
Q

Purpose of obtaining recent chest x-ray as px preparation.

A

To determine extent of lung fields and lung type.

43
Q

Dynamic imaging method in lung ventilation displays..

A

20-60secs./frame for 6-8 mins. (wash-in, equilibrium, wash-out)

44
Q

Static imaging method in lung ventilation displays..

A

500,000 - 1,000,000 counts each images

45
Q

Px position during Xe-133 procedure.

A

Supine or sitting

46
Q

Camera position during Xe-133 procedure.

A

Posterior

47
Q

Px position during Tc-99m DTPA procedure.

A

Supine or upright

48
Q

Camera position during Tc-99m DTPA procedure.

A

Anterior and posterioir, lateral & oblique

Nuclear Medicine (1 decks)

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