Sentimag

Question 1

Yellow counts mean…

Answer 1

A positive signal in which the Sentimag unit and probe will provide audible feedback

Question 2

What factors can cause positive signals?

Answer 2

Magseed
Other ferrous metals i.e. instruments
Electrocautery
Environmental factors

Question 3

Red counts represent…..

Answer 3

A negative signal in which the sentimag unit and prove will not provide audible feedback

Question 4

What can cause a negative signal?

Answer 4

Body (water and tissue)
Nonferrous metals
Electrocautery
Distance past the seed

Question 5

When to balance?

Answer 5

Option 1- Balance the probe each time

Option 2- Knowing when to balance

Question 6

How long does it take the Sentimag unit to warm up?

Answer 6

20 minutes

Question 7

What are the three different balancing techniques?

Answer 7

1. Air
2. Skin
3. Palpate

Question 8

How long does it take to balance?

Answer 8

3 seconds

Question 9

Probe check requires the sensitivity to be on what?

Answer 9

Set on 3

Question 10

During the probe check the Sentimag unit should provide a negative reading at what range?

Answer 10

270-330(+/-10%)

Question 11

Which scanning method is used to determine the location of Magseed?

Answer 11

Joystick

Question 12

The Sentimag probe should not be placed within _____mm of any part of an operating pacemaker.

Answer 12

15mm

Question 13

True or False:

The Sentimag probe is not suitable for autoclaving or disinfection using formaldehyde.

Answer 13

True

Question 14

What is the sensing zone for the Sentimag probe?

Answer 14

3 cm

Question 15

True or False:

The physician has the ability to use their current instrumentation during a procedure.

Answer 15

True but the instruments must be removed from the cavity during scanning with the Sentimag probe.

Question 16

When bracketing what is the minimum distance between each seed?

Answer 16

2 cm

Question 17

What is the size of the Magseed?

Answer 17

Smaller than a grain of rice 1x5 mm

Question 18

What is the length of the deployment device?

Answer 18

7 cm
12 cm
20 cm

Question 19

How large of an MRI artifact does the Magseed leave?

Answer 19

Around 4 cm.

Question 20

Currently how long can the Magseed be implanted for?

Answer 20

30 days.

Question 21

Can I place a Magseed in lymph nodes?

Answer 21

Not according to the IFU.

Question 22

What is the applicator gauge size for Magseed?

Answer 22

18 gauge.

Question 23

What material is the Magseed composed of?

Answer 23

Surgical Stainless steel with less than 1% nickel

Bonewax is used as a teminal plug in the applicator (the same as RSL).

Question 24

What minimizes migration of Magseed?

Answer 24

The woven design minimizes movement by promoting tissue growth.

Question 25

What imaging modalities is Magseed visible under?

Answer 25

Ultrasound, mammography, tomo, and Stereo.

Question 26

True or False:

The Magseed signal is weakened by tissue type and degrades over time?

Answer 26

False.

Question 27

Can the Magseed be used in conjunction with a wire?

Answer 27

Yes as long as the wire is titanium.