Respiratory Scintigraphy

Question 1

Blood flow to the Lungs.

Answer 1

Lung Perfusion

Question 2

Air flow to the Lungs.

Answer 2

Lung Ventilation

Question 3

If perfusion defects match with same areas as ventilation defects.

Answer 3

COPD

Question 4

If there is a presence of blood flow blockage.

Answer 4

Pulmonary Embolism

Question 5

If there is a presence of air flow blockage.

Answer 5

Atelectasis

Question 6

Any substance that causes obstruction.

Answer 6

Emboli

Question 7

COPD means..

Answer 7

Chronic Obstructive Pulmonary Disorder

Question 8

Contraindications of Lung Perfusion

Answer 8

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

Question 9

Radiopharmaceutical used in Lung Perfusion.

Answer 9

a. Tc-99m Macroaggregated Albumin

b. Tc-99m Human Albumin Microspheres

Question 10

Route of administration of radiopharm in Lung Perfusion.

Answer 10

Intravenous

Question 11

Adult dose for Lung Perfusion.

Answer 11

2-6 mCi

Question 12

Pediatric dose for Lung Perfusion.

Answer 12

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

Question 13

Camera used for Lung Perfusion.

Answer 13

Dual Head Gamma Camera; Large FOV

Question 14

2 Imaging Methods in Lung Perfusion:

Answer 14

a. Dynamic

b. Static

Question 15

Dynamic imaging method in lung perfusion displays..

Answer 15

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

Question 16

Static imaging method in lung perfusion displays..

Answer 16

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

Question 17

Positions of px in Lung Perfusion.

Answer 17

Supine, arms on sides or upright.

Question 18

Positions of camera in Lung Perfusion.

Answer 18

a. Anterior and Posterior
b. Lateral
c. Oblique

Question 19

Collimator used in Lung Perfusion.

Answer 19

Low Energy All Purpose

Question 20

Hotspots mean..

Answer 20

Active bone marrow/blood formation.

Question 21

Coldspots mean..

Answer 21

Embolism/Obstruction

Question 22

Position that allows better lung base visualization.

Answer 22

Upright Position

Question 23

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

Answer 23

Supine Position

Question 24

Sign of activity that means COPD.

Answer 24

Stripe Sign

Question 25

Presents as a zone of preserved peripheral perfusion.

Answer 25

Stripe Sign

Question 26

Matching defects of ventilation means (4)..

Answer 26

1. COPD 2. Bullae 3. Emphysema 4. Lung Dysfunction

Question 27

Presents as increased lung size.

Answer 27

Emphysema

Question 28

Presents as complete absent activity.

Answer 28

Bronchogenic Carcinoma

Question 29

Sign of activity that means Bronchogenic Carcinoma.

Answer 29

Edge Sign

Question 30

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

Answer 30

Pleural Effusion

Question 31

Sign of activity that means Pleural Effusion.

Answer 31

Fissure Sign

Question 32

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

Answer 32

Pneumonia or Atelectasis

Question 33

Presents as diffusely heterogeneous perfusion with many small perfusion abnormalities.

Answer 33

Pulmonary Arterial Hypertension

Question 34

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

Answer 34

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

Question 35

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

Answer 35

a. Collapsed Lung | b. Complete or Partial Bronchial Obstruction

Question 36

Common indications of Lung Perfusion.

Answer 36

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

Question 37

Common indications of Lung Ventilation

Answer 37

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

Question 38

Terminal end of respiration.

Answer 38

Alveoli

Question 39

Terminal end of circulation.

Answer 39

Capillaries

Question 40

Radiopharmaceutical used in Lung Ventilation.

Answer 40

1. Tc-99m DTPA (Diethylenetriaminepentaaceticacid) | 2. Xe-133 gas

Question 41

Route of administration of radiopharm in Lung Ventilation.

Answer 41

Inhalation

Question 42

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

Answer 42

To determine extent of lung fields and lung type.

Question 43

Dynamic imaging method in lung ventilation displays..

Answer 43

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

Question 44

Static imaging method in lung ventilation displays..

Answer 44

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

Question 45

Px position during Xe-133 procedure.

Answer 45

Supine or sitting

Question 46

Camera position during Xe-133 procedure.

Answer 46

Posterior

Question 47

Px position during Tc-99m DTPA procedure.

Answer 47

Supine or upright

Question 48

Camera position during Tc-99m DTPA procedure.

Answer 48

Anterior and posterioir, lateral & oblique