GE H48671KK, Service Manual

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GE H
EALTHCARE
DRAFT V
OLUSON
E8 / V
OLUSON
E6
D
IRECTION
KTD102576, R
EVISION
7 DRAFT (A
UGUST
23, 2012) S
ERVICE
M
ANUAL
Chapter 5 - Components and Functions (Theory) 5-21
5-2-4-18 Elastography Analysis
A selectable sequence of Elastography images are analyzed within a ROI (range of interest).
The Strain % or the Elasticity Index is displayed as curves over the time.
The mean value of the Strain % is measured within 1 or more ROI’s and Ratios are calculated.
“Generic Elasto” measurements are located in the generic measurement menu and are only available
if “Elastography” is activated.
5-2-4-19 SRI Advanced - Speckle Reduction Imaging
A type of image noise or interference is generally considered undesirable and can obscure the quality
or interpretation of B-mode images. Although somewhat associated with the underlying echogenicity of
tissue scatters, image speckle characteristics such as brightness, density or size have no apparent
value in determining tissue structure or related properties. The elimination of or significant reduction in
speckle improves the quality or diagnostic potential of the image.
The method applied in the subject modification utilizes a nonlinear diffusion filtering technique that
permits effective speckle reduction in real time. The speckle reduction filter is available to the user in all
B-mode imaging, independent of the transducer used.
5-2-4-20 V-SRI - Volume Speckle Reduction Imaging
V-SRI is an enhancement of the existing SRI algorithms and improves specially the C-plane image.
This new algorithm (from Context Vision) is used in the A-, B-, C-planes and rendered images instead
of the conventional SRI.
5-2-4-21 Expert (= Upgrade “Option“ VE8 -> VE8 Expert)
• enables the full functionality and performance of “standard” Voluson E8 platform by providing the
new feature “'Wide Sector” (extending the field of view of curved array probes by the means of
beam steering) on all probes capable of this feature
• secondly this function is needed to enable the function of the Matrix Volume Probes
(RAM3-8, RM6C, RSM5-14 and RM14-L) and the high resolution transvaginal probe RIC6-12
BT Version:
BT-Version:
The “Elastography Analysis” feature is standard at systems with BT13 software.
BT
Version:
BT-Version:
This option “SRI Advanced” is not available at Voluson E6 systems with BT09 software. At Voluson E8/
Voluson E8 Expert systems with BT12 and BT13 software, this feature is standard.
BT
Version:
BT-Version:
The “V-SRI” option is only available at Voluson E8 Expert systems with BT12 and BT13 software, and
with the probes RM6C-D, RIC5-9-D and RIC6-12-D.