Indications / Optimization For Breast

Question 1

What are indications for a female breast U/S? (7)

Answer 1

1. Mass characterization (eg. solid vs cystic)
2. Evaluation of clinical symptom (eg. new lump)
3. Provide more info following a mammo
4. Evaluation of patients with inflammatory symptoms (eg. mastitis)
5. Guidance of invasive or interventional procedures
6. Diagnosing rupture of breast implants
7. Treatment planning for radiation therapy

Question 2

What are indications for a male breast U/S? (5)

Answer 2

1. Breast asymmetry of enlargement
2. Palpable masses
3. Breast pain or tenderness
4. Nipple discharge
5. Prev history of breast cancer

Question 3

What is the first component of spatial resolution?

Answer 3

Axial resolution

Question 4

Axial resolution

Answer 4

Minimum distance separating tow different reflectors along the longitudinal axis of sound travel, so they separate echoes are produced on the display

Question 5

What is the formula for axial resolution?

Answer 5

AR = SPL/2

Question 6

What does a shorter spatial pulse length mean for axial resolution?

Answer 6

Better axial resolution
- directly proportional

Question 7

What happens to axial resolution if you increase frequency?

Answer 7

Improves axial resolution

Question 8

What happens to axial resolution if you increase depth penetration?

Answer 8

Decreases axial resolution

Question 9

What is the second component of spatial resolution?

Answer 9

Lateral resolution

Question 10

Lateral resolution

Answer 10

Minimum distance separating two different reflectors lying in a plane that is perpendicular to the direction of sound travel, so they separates echoes are produced on the display

Question 11

What is lateral resolution indirectly proportional to?

Answer 11

Beam diameter

Question 12

What does a shorter pulse length mean for lateral resolution?

Answer 12

Better lateral resolution