SSI-6000/SSI-5800/SSI-5500/SSI-5500BW
Digital Color Doppler Ultrasound System
TIS, for soft tissue exposures; TIB, for instances when bone lies near the beam
focus; and TIC, for the heating of bone situated close to the transducer.
Cavitation:
Cavitation may occur when sound passes through an area that contains a cavity,
such as a gas bubble or air pocket (in the lung or intestine, for example). During
the process of cavitation, the sound wave may cause the bubble to contract or res-
onate. This oscillation may cause the bubbles to explode and damage the tissue.
The Mechanical Index (MI) has been created to help users accurately evaluate the
likelihood of cavitation and the related adverse effects.
1.4
Scanning Patients and Education
The Track-3 or IEC60601-2-37 output display standard allows users to share the
responsibility for the safe use of this ultrasound system. Follow these usage guide-
lines for safe operation:
•
In order to maintain proper cleanliness of the transducers, always clean them
between patients.
•
Always use a new disinfected sheath on all EV/ER probes during every
exam.
•
Continuously move the probe, rather than staying in a single spot, to avoid
elevated temperatures in one part of the patient’s body.
•
Move probe away from the patient when not actively scanning.
•
Understand the meaning of the TI, TIS, TIB, TIC, and MI output display, as
well as the relationship between these parameters and the thermal/cavitation
bioeffect to the tissue.
•
Expose the patient to only the very lowest practical transmit power levels for
the shortest possible time to achieve a satisfactory diagnosis (ALARA - As
Low As Reasonably Achievable).
1.4.1
Safe Scanning Guideline
1. Ultrasound should only be used for medical diagnosis and only by trained
medical personnel.
2. Diagnostic ultrasound procedures should be done only by personnel fully
trained in the use of the equipment, in the interpretation of the results and
images, and in the safe use of ultrasound (including education as to potential
hazards).
3. Operators should understand the likely influence of the machine controls, the
operating mode (e.g. B-mode, color Doppler imaging or spectral Doppler)
and probe frequency on thermal and cavitation hazards.
P/N: 4701-0061-01B
1-4
