GE Logiq P5 User Manual

							Optimizing B-Mode
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Line Density
DescriptionOptimizes B-Mode frame rate or spatial resolution for the best 
possible image. 
AdjustingPress Line Density right to increase resolution or left to 
increase frame rate. 
Va l u e sVaries by probe.  
NOTE:  Not available in timeline. 
Values vary by probe and application. Line Density values are 
returned to the factory or user preset value when you change 
the following: Probe, Exam Category, Exam Calcs, or New 
Patient. 
BenefitsFrame rate is useful in fetal heartbeat, adult cardiac applications 
and in clinical Radiology applications requiring significantly 
higher frame rates. 
High resolution is useful in situations where very small vessels 
are being imaged, e.g., thyroid, testicles. 
Affect on other 
controlsFrame rate will change the vector density and frame rate.
BioeffectsActivating color flow frame rate/high resolution may change the 
TI and/or MI. Observe the output display for possible effects.  
						

							Optimizing the Image
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Map
DescriptionThe system supplies B, M, and Doppler Mode system maps.
AdjustingTo select a map, press Gray Map. A map window displays 
adjacent to the image. Move the Trackball to select the map. 
The image reflects the map as you scroll through the selections. 
Press Set to select. 
Va l u e sGray maps gradually change from least contrasty (Map A) to 
most contrasty (Map R). 
Map values vary by probe, application, and multi frequency 
setting. Map values are returned to the factory or user preset 
value when you change the following: Probe, Exam Category, 
Exam Calcs, New Patient, or Frequency. 
MapDescription
A Assigns a greater amount of gray scale pixel values to bright reflectors in the image. Useful 
when imaging abdomen, liver, kidney, OB, pelvic, etc. 
B Assigns a greater amount of gray scale pixel values to bright reflectors in the image. Useful 
when the abdomen, liver, kidney, OB, pelvic, etc. 
C Assigns a greater amount of gray scale pixel values to bright reflectors in the image. Useful 
when imaging the  abdomen, liver, kidney, OB, pelvic, etc. 
D Assigns a lesser amount of gray scale pixel values to bright reflectors in the image, compared 
to Maps B and C. Useful when imaging bright carotid plaque reflectors. 
E Assigns a equal amounts of gray scale pixel values to all reflectors in the image. Useful when 
imaging tissue with bright reflectors, e.g., cyst with septations or calcifications. 
F Assigns a lesser amount of gray scale pixel values to bright reflectors in the image. Useful 
when imaging arteries and grafts. 
G Assigns a lesser amount of gray scale pixel values to weak reflectors in the image than Map F. 
Useful when imaging small parts. 
H Assigns an s-shape to gray scale pixel values. Useful when imaging anatomical signals with 
less tissue differentiation, e.g., tendon, vein, carotid, thyroid, breast, etc. 
I S-shaped map. This map highlights tissue differentiation for a certain band of signals. Useful 
when imaging structures where you want more contrast, e.g., renal, tendon, vein, carotid, 
thyroid, breast, etc. 
J S-shaped map. This map highlights tissue differentiation for a certain band of signals. Useful 
when imaging structures where you want more contrast, e.g., renal, tendon, vein, carotid, 
thyroid, breast, etc. 
K S-shaped map. This map highlights tissue differentiation for a certain band of signals. Useful 
when imaging structures where you want more contrast, e.g., renal, tendon, vein, carotid, 
thyroid, breast, etc. 
L S-shaped map. This map highlights tissue differentiation for a certain band of signals. Useful 
when imaging structures where you want more contrast, e.g., cardiology.  
						

							Optimizing B-Mode
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M Assigns a lesser amount of gray scale pixel values to weak reflections in the image than Map 
C. Useful when imaging abdomen and liver. 
N S-shaped map. This map highlights tissue differentiation for a certain band of signals. Useful 
when imaging structures where you want more contrast, e.g., renal, tendon, vein, carotid, 
thyroid, breast, Cardiology, etc. 
O S-shaped map. This map highlights tissue differentiation for a certain band of signals. Useful 
when imaging structures where you want more contrast, e.g., renal, tendon, vein, carotid, 
thyroid, breast, Cardiology, etc. 
P Assigns a lesser amount of gray scale pixel values to weak reflectors in the image than Map M. 
Useful when imaging abdomen and liver.
Q Assigns a lesser amount of gray scale pixel values to weak reflectors in the image than Map R. 
Useful when imaging thyroid and abdomen.
R Assigns a lesser amount of gray scale pixel values to weak reflectors in the image than Map C. 
Useful when imaging thyroid and abdomen.
MapDescription 
						

							Optimizing the Image
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Frame Average
DescriptionTemporal filter that averages frames together, thereby using 
more pixels to make up one image. This has the effect of 
presenting a smoother, softer image. 
AdjustingTo adjust frame averaging, adjust Frame Average on the Touch 
Panel. 
Va l u e s0-5, with 5=high.  The current value displays on the Touch 
Panel. Frame Average values vary by probe, application, and 
multi frequency setting. 
Frame Average values are returned to the preset value when 
you change the following: Probe, Exam Category, Exam Calcs, 
New Patient, Multi Frequency. 
BenefitsSmooths the image.  
						

							Optimizing B-Mode
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Colorize
DescriptionColorize is the colorization of a conventional B-Mode image or 
Doppler Spectrum to enhance the users ability to discern B, M, 
and Doppler Mode intensity valuations. Colorize is NOT a 
Doppler Mode. 
NOTE:  You can colorize realtime or CINE images or Timeline CINE, but 
not VCR images. 
Colorizes the gray scale image to enhance the eyes 
discrimination capability. 
Spectrum Colorize colorizes the spectrum as a function of 
power using the inverse of the Colorize map for the signal 
intensity in each Doppler line. 
Colorize enhances the visibility of the spectrums characteristics 
and enhances your ability to identify spectral broadening and 
the edge contours of the spectrum used to define the peak 
frequency/velocity. 
The gray bar displays while Colorize is activated. 
AdjustingTo activate Colorize, 
1. Select Colorize on the Touch Panel. 
2. Trackball to cycle through available maps. 
3. Press Set to select.  
						

							Optimizing the Image
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Edge Enhance
DescriptionEdge Enhance brings out subtle tissue differences and 
boundaries by enhancing the gray scale differences 
corresponding to the edges of structures. Adjustments to M-
Modes edge enhancement affects the M-Mode only. 
AdjustingTo cycle through settings, adjust Edge Enhance on the Touch 
Panel. 
Va l u e s0-5, with 0 = Off and 5 = High. The current value displays on the 
Touch Panel. Values vary by probe, application, and multi 
frequency setting. Values are returned to the preset value when 
you change: Probe, Exam Category, Exam Calcs, New Patient, 
or Multi Frequency. 
BenefitsEdge Enhance cleans out the B-Mode image/M-Mode timeline 
by subduing some of the gray scale in order to highlight the 
vessel wall or organ. This is helpful when you cannot 
differentiate between the chambers of the heart. 
Affect on other 
controlsEdge Enhance operates in realtime only; not in Freeze, CINE, or 
VCR. 
Edge Enhance operates in realtime only; not in Freeze or CINE.
Rotation (Updown Invert)
DescriptionYou can flip the image up/down. 
AdjustingTo flip the image vertically, press Rotation (Updown Invert. 
Va l u e sUp/down.  Values vary by probe and application. Values are 
returned to the preset value when you change: Probe, Exam 
Category, Exam Calcs, or New Patient. 
BenefitsBeneficial in transvaginal and transrectal scanning. 
CAUTIONWhen reading a rotated image, be careful to observe the probe 
orientation to avoid possible confusion over scan direction or 
left/right image reversal.  
						

							Optimizing B-Mode
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Rejection
DescriptionSelects a level below which echoes will not be amplified (an 
echo must have a certain minimum amplitude before it will be 
processed).
AdjustingAdjust to the right to increase and left to decrease.  
Va l u e s0-5
BenefitsAllows for the elimination from the display of low level echoes 
caused by noise. 
						

							Optimizing the Image
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LOGIQView
DescriptionLOGIQView provides the ability to construct and view a static 2D 
image which is wider than the field of view of a given transducer. 
This feature allows viewing and measurements of anatomy that 
is larger than what would fit in a single image. Examples include 
scanning of vascular structures and connective tissues in the 
arms and legs. 
LOGIQView constructs the extended image from individual 
image frames as the operator slides the transducer along the 
surface of the skin in the direction of the scan plane. The quality 
of the resulting image is somewhat user-dependent and requires 
some additional skill and practice to develop proper technique 
and become fully proficient. 
LOGIQView is not available for the following: 
• Multi Image
• Timeline Modes
•  B Flow Mode
•  Color Flow Mode
• PDI Mode
BenefitsThe user can look at a larger region of interest within one field of 
view that is wider than any given probe would normally provide. 
Clinical UseLOGIQView is intended for scanning areas too large to fit on one 
image. 
Using LOGIQViewTo perform an exam using LOGIQView, 
1.  Perform a detailed examination of the anatomy/pathology. 
Optimize parameters for tissue texture and visible window 
PRIOR TO activating LOGIQView. 
2.  Press the LOGIQView key on the Control Panel. 
3.  To start acquiring the image, press ‘L’ (the left split screen 
key). 
HINTSWhen you scan, scan slowly and in a uniform motion 
lengthwise, end-to-end (with or against the probe orientation 
marker). LOGIQView acquires images via leading edge vectors 
(and does not acquire slices, as in CINE). The image is being 
stored as you perform the scan and you can watch the 
LOGIQView as it is being acquired.  
						

							Optimizing B-Mode
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LOGIQView (continued)
4.  To restart the scan, press ‘L’ again. 
5.  To complete the scan, press ‘R’ or Freeze (or allow the scan 
to auto complete. The LOGIQView is then displayed, scaled 
to fit entirely on the screen. 
6.  Perform measurements and record images. 
NOTE:  Measurement error is within 5% of the distance you 
measured for all linear probes. 
Uniform MotionThe quality and usefulness of LOGIQView images is affected by 
transducer motion. Incorrect technique can contribute to image 
distortion. 
Guidance and precautions for uniform motion: 
•  Continuous contact is required throughout the length of the 
extended image. DO NOT lift the transducer from the skin 
surface. 
•  Always keep the transducer perpendicular to the skin 
surface. DO NOT rock the transducer. 
•  Keep the motion within the same scan plane, if possible. DO 
NOT slide the transducer laterally. 
•  Lateral turning (change in direction to follow anatomical 
structure) can be accommodated with slower motion. DO 
NOT make abrupt changes in direction. 
•  The system accommodates a reasonable range of motion 
velocity. DO NOT make abrupt changes in speed of motion. 
Deeper scans generally require reduced speed. 
BioeffectsActivating LOGIQView has no affect upon Acoustic Output 
values.  
						

							Optimizing the Image
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Optimizing M-Mode
Intended Use
M-Mode is intended to provide a display format and 
measurement capability that represents tissue displacement 
(motion) occurring over time along a single vector. 
Introduction
M-Mode is used to determine patterns of motion for objects 
within the ultrasound beam. The most common use is for 
viewing motion patterns of the heart. 
Typical exam protocol
A typical examination using M-Mode might proceed as follows:
1.  Get a good B-Mode image. Survey the anatomy and place 
the area of interest near the center of the B-Mode image. 
2. Press M/D Cursor. 
3.  Trackball to position the mode cursor over the area that you 
want to display in M-Mode. 
4. Press M-Mode. 
5.  Adjust the Sweep Speed, TGC, Gain, Power Output, and 
Focus Position, as needed. 
6. Press Freeze to stop the M trace. 
7.  Record the trace to disk or to the hard copy device. 
8. Press Freeze to continue imaging. 
9.  To exit, press M-Mode.