Sentimag Flashcards
Yellow counts mean…
A positive signal in which the Sentimag unit and probe will provide audible feedback
What factors can cause positive signals?
Magseed
Other ferrous metals i.e. instruments
Electrocautery
Environmental factors
Red counts represent…..
A negative signal in which the sentimag unit and prove will not provide audible feedback
What can cause a negative signal?
Body (water and tissue)
Nonferrous metals
Electrocautery
Distance past the seed
When to balance?
Option 1- Balance the probe each time
Option 2- Knowing when to balance
How long does it take the Sentimag unit to warm up?
20 minutes
What are the three different balancing techniques?
- Air
- Skin
- Palpate
How long does it take to balance?
3 seconds
Probe check requires the sensitivity to be on what?
Set on 3
During the probe check the Sentimag unit should provide a negative reading at what range?
270-330(+/-10%)
Which scanning method is used to determine the location of Magseed?
Joystick
The Sentimag probe should not be placed within _____mm of any part of an operating pacemaker.
15mm
True or False:
The Sentimag probe is not suitable for autoclaving or disinfection using formaldehyde.
True
What is the sensing zone for the Sentimag probe?
3 cm
True or False:
The physician has the ability to use their current instrumentation during a procedure.
True but the instruments must be removed from the cavity during scanning with the Sentimag probe.
When bracketing what is the minimum distance between each seed?
2 cm
What is the size of the Magseed?
Smaller than a grain of rice 1x5 mm
What is the length of the deployment device?
7 cm
12 cm
20 cm
How large of an MRI artifact does the Magseed leave?
Around 4 cm.
Currently how long can the Magseed be implanted for?
30 days.
Can I place a Magseed in lymph nodes?
Not according to the IFU.
What is the applicator gauge size for Magseed?
18 gauge.
What material is the Magseed composed of?
Surgical Stainless steel with less than 1% nickel
Bonewax is used as a teminal plug in the applicator (the same as RSL).
What minimizes migration of Magseed?
The woven design minimizes movement by promoting tissue growth.
What imaging modalities is Magseed visible under?
Ultrasound, mammography, tomo, and Stereo.
True or False:
The Magseed signal is weakened by tissue type and degrades over time?
False.
Can the Magseed be used in conjunction with a wire?
Yes as long as the wire is titanium.
