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Flashcards in Radiology Midterm Deck (160)
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1

Capsule endoscopy

2

Phleboliths

3

Gastric lap band

4

Upright abdominal radiography

5

Supine Abdominal Radiography

6

Emphysematous cholecystitis

7

Paralytic ileus

8

Continous Diaphragm Sign 

 

Secondary to pneumoperitoneum

9

Small bowel obstruction

10

Describe how a small bowel obstruction would look on x-ray.

Proximal - dilated

transition point - obstruction

distal - collapsed

11

How do you treat a small bowel obstruction?

Lysis of adhesions

12

Differentiate valvulae conneventes from haustra on x-ray.

Valvulae are continuous (connect)

Haustra don't

13

What constitutes a dilated small bowel on CT with contrast?

>2.5-3 cm

14

Diffuse dilation of the small and large bowel on x-ray?

Paralytic ileus

15

What is the modality of choice to diagnose renal, ureteral and bladder calculi?

CT abdomen without constrast

16

How do you follow/monitor renal calculi in family practice?

U/S - don't want to expose somone to too much radiation, when you already know they have stones

17

What are phleboliths?

Calcification of the pelvic veins

18

Will you see the diaphragm on a supine (AP) or upright (PA) abdominal x-ray?

Upright - air under the diaphragm

19

Where does the air rise to in an upright abdominal x-ray?

Fundus of the stomach AND hepatic and splenic flexures

20

Where does the air rise to in a supine abdominal x-ray?

Body of the stomach and transverse colon

21

T/F: If you see an emphysematous cholecystitis on x-ray, confirm with U/S?

False - SURGICAL EMERGENCY - gas forming anaerobic infection in the wall of the gallbladder

22

What is the test of choice for diagnosing gallstones?

U/S - abdominal x-rays miss most stones

23

What will you see on an x-ray in a person with a pneumoperitoneum?

Continous diaphragm sign - air within the peritoneal cavity, under the diaphragm

24

When should you see the valvulae conneventes on an x-ray?

Abnormal - i.e. dilated portion proximal to an obstruction

25

What is the name of the large bowel fold pattern?

Haustrations/Haustra

26

What is the name of the small bowel fold pattern?

Valvulae conneventes

27

What is the name of the stomach fold pattern?

Rugae

28

What is the most commonly performed radiologic examination?

Chest x-ray

29

Explain the basic principles of a radiograph?

1. A light source emits light photons towards the patient

2. The photons penetrate the patient, depending on their density of the organs (some are transmitted, some are attenuated)

3. Transmitted photons are captured by the detector, while attenuated photons cast a shadow on the detector. 

30

Does air filled tissue (i.e. lungs) attenuate or transmit photons?

Transmit - maximally exposes the detector