Chapter 20 - Contrast Studies (Iodine Compounds)

Question 1

Angiography

Answer 1

1. X-ray image (angiogram) of blood vessels and heart chamber is obtained after contrast injection through a catheter into blood vessels or heart chamber.
2. Example: coronary angiography = determines the degree of arterial obstruction.

Question 2

Cholangiography

Answer 2

1. X-ray imaging after injection of contrast into bile ducts (gallbladder)

Question 3

Digital subtraction angiography

Answer 3

X-ray image of contrast-injected blood vessels is produced by taking two x-ray pictures (the first without contrast) and using a computer to subtract obscuring shadows from the second image.

Question 4

Hysterosalpingography

Answer 4

X-ray record of the endometrial cavity and Fallopian tubes is obtained after injection of contrast material through the vagina and into the endocervical canal

Question 5

Myelography

Answer 5

X-ray imaging of the spinal cord after injection of contrast agent into the subarachnoid space surrounding the spinal cord.

Question 6

Pyelography

Answer 6

1. X-ray imaging of the renal pelvis and urinary tract.
2. Urography is also another word to describe pyelography. X-ray images of urinary tract after contrast material injection.

Question 7

Digital imaging techniques

Answer 7

Can be used to enhance conventional and fluoroscopic x-ray images

Question 8

Fluoroscopy

Answer 8

The use of x-rays and a fluorescent screen to produce real-time video images

Question 9

Interventional radiology

Answer 9

Invasive procedure (therapeutic or diagnostic) using CT guidance or fluoroscopy.

Question 10

What is Ultrasonography?

Answer 10

Diagnostic technique that projects and retrieves high-frequency sound waves as they bounce (echo) off parts of the body.