GE LOGIQ Totus, Basic Service Manual, Page: 47 / 644

GE HealthCare CONFIDENTIAL
Direction 5936427 , Rev. 1 LOGIQ Totus Basic Service Manual
Chapter 1 Introduction 1 - 15
1-5-2 Human safety (continued)
DANGER
DO NOT USE UNAPPROVED DEVICES.
IF DEVICES ARE CONNECTED WITHOUT THE APPROVAL OF GE HEALTHCARE, THE
WARRANTY WILL BE INVALID.
ANY DEVICE CONNECTED TO THE ULTRASOUND SYSTEM MUST CONFORM TO ONE OR
MORE OF THE REQUIREMENTS LISTED BELOW:
- IEC standard or equivalent standards appropriate to devices.
- The devices shall be connected to protective earth (ground).
DANGER
RISK OF ELECTRICAL SHOCK, THE LOGIQ Totus MUST BE TURNED OFF AND
DISCONNECTED FROM POWER SOURCE. CORD MUST BE CONTROLLED AT ALL TIMES.
DISCONNECT THE BATTERIES FROM THE BACKPLANE.
BEWARE THAT THE MAIN POWER SUPPLY, THE POWER ASSIST BATTERIES OR POWER
MODULE AND UBE-T MAY BE ENERGIZED EVEN IF THE POWER IS TURNED OFF IF THE
CORD IS STILL PLUGGED INTO THE AC OUTLET.
DANGER
Be sure to have read and understood control explanations for each mode used before
attempting to adjust the Acoustic Output control or any control that can affect Acoustic
Output. During a screening and diagnostic ultrasound examination, high frequency sound
penetrates and interacts with tissue in and around the area of anatomy to be imaged. Only a
small portion of this sound energy is reflected back to the transducer for use in constructing
the image, while the remainder is dissipated within the tissue. The interaction of sound
energy with tissue at sufficiently high levels can produce biological effects (aka bioeffects)
of either a mechanical or thermal nature. Although the generation of bioeffect is intentional
with therapeutic ultrasound, it is generally undesired in screening and diagnostic
applications and may be harmful in some conditions.
Use the minimum necessary acoustic output (the principle of ALARA (As Low As Reasonably
Achievable)) to get the best diagnostic image or measurement during an examination. Begin
the exam with the probe that provides an optimum focal depth and penetration.