RTI Black Piranha, GE Senographe Pristina Quick Manual

Quick Guide

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How to measure on GE Senographe Pristina with Black Piranha

This Quick Guide refers to use of the Black Piranha on the GE Senographe Pristina.

1. Before starting

a. The Black Piranha

1

must have a calibration for mammography performed at RTI

after May 1, 2016.

b. The Ocean software version should be 2016.12.27.243 or higher.
c. The GE Quick Check templates, version 1.1D, for Ocean must be installed.
d. Make sure to have the Piranha Pristina holder, GE part # 5758284, available (image

to right).

1

Piranha ordered under GE Part # 5758293 is Black, and must have a calibration for

mammography performed at RTI after May 1, 2016. Red Piranhas ordered under GE
Part # 5401610, or 5458262 must have been upgraded to Black Piranha with calibration after May 1, 2016.
If the Piranha has a calibration date from May 1, 2016 to March 9, 2017, it also must have been updated for correct CF
calibration using the IQST phantom (see internal GE service notes).

2. Measure using GE Quick Check Templates

Setup

e. Place the Black Piranha in the holder as shown in image (right).

The Black Piranha will only fit in one way.

f. Slide the holder into the GE dosimeter support.
g. The Black Piranha can be left in this positon for all measurements described below.
h. Follow the job card instructions when it comes to image detector protection, IQST

phantom set-up, compression paddle set-up, etc…

Measure

When starting Ocean the measure guide as shown in image (right) should appear. If
not, the option “Auto-start Quick Check” is deactivated. This function can be activated
under Options.

i. Select GE Mammography…
j. In next screen select GE Mammography[Senographe Pristina]…

k. In next screen (image to right) select the proper application: Conversion

factor, HVL, or kVp.

Quick Guide

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l. When starting one of the test a set-up instruction (hint)

will pop-up, see image.

m. Press the right arrow key to get to the measure screen.

Notice:

Depending on configuration of Ocean, a Position Check may be
suggested (yellow bar besides the green “ready” box). If so, just

abort the Position Check by clicking anywhere in the yellow
area.

This will be the case for every new target/filter selection.

With the good geometry of the Pristina unit, and use of the
Piranha Pristina holder, GE part # 5758284, the Position check
does not add confidence to the measurement.

Conversion Factor – CAL 009

The image to the right shows the template for the conversion
factor measurement.
Follow the GE job card instructions for the measurement.

Notice:

The template is built for mR units. If mGy units shall be used,
just right click on the unit and select mGy.

When ready for next test, just press the New Quick Check
button. You shall now be back to the selection screen as
described under (i) above.

HVL – CAL A010

The template is built for the sequence to measure small and large focus in the same sequence, but can be
used also for one at the time.
The template can be used for one shot HVL as well as for traditional measurements by adding layers of
aluminum sheets.