9  eSieFusion Imaging 
Instructions for Use  9 - 3 
eSieFusion Overview 
  WARNING: This feature uses reference data collected using other imaging modalities. 
Variability in system performance, operator technique, patient characteristics, patient movement, 
and other factors may affect image alignment and sensor tracking data. At all times, the clinician 
is advised to carefully review the on-screen data and confirm the information presented with 
clinical judgment. 
  WARNING: The tracking system generates magnetic fields that can interfere with implantable 
devices such as pacemakers and implantable cardioverter-defibrillators (ICDs). If the patient has 
such an implantable device, you should be aware of any interference in its operation and 
immediately power off the ultrasound system. 
  WARNING: Percutaneous procedures always involve heightened risk to the patient and to the 
operator. Clinicians using biopsy or ablation devices under ultrasound guidance should be 
trained and must observe proper procedures when attaching tracking sensors to the transducer 
or the needle to avoid inaccurate tracking or alignment. 
eSieFusion imaging enables viewing of a real-time ultrasound image aligned with reference 
data acquired using another imaging modality, such as computed tomography (CT) or magnetic 
resonance imaging (MRI). You can use the blended image for visualization during diagnostic 
ultrasound exams, ultrasound-guided ablation procedures, and ultrasound-guided biopsy 
procedures.  
The eSieFusion feature is compatible with the following transducers and exam types. 
Transducer  Exam Types 
4V1  Abdomen, Renal 
4C1  Abdomen, Renal 
6C2  Abdomen, Renal 
9L4  Musculoskeletal 
 
The eSieFusion feature requires the following tracking system equipment. 
Equipment  Description 
Electronics unit 
Provides connections to the transmitter, the transducer sensors, and 
the needle sensor. 
Transmitter 
Connected to the electronics unit. Generates a magnetic field for 
determining the location of the transducer or needle. 
Transducer sensor  
Attached to the transducer and the electronics unit. Provides location 
and orientation information to the tracking system.  
Needle tracking sensor  
Inserted into the needle and attached to the electronics unit. Provides 
location and orientation information to the tracking system. 
See also: Equipment, eSieFusion Imaging, Technical Description, Appendix A, Instructions for Use