M mode imaging provides Time and Motion echo information derived from a stationary
ultrasound beam. M mode is used along with a 2D image. A straight line running through the
2D image, called the M-cursor, identifies the position of the stationary ultrasound beam from
which the echo information is being gathered. The motion or change that occurs at this
position over time is used by the system to generate the scrolling M mode display.
M mode is primarily a cardiology mode. M mode records moving anatomical structures and
produces subtle patterns of motion. These patterns allow you to plot temporal relationship
between events in the cardiac cycle. Precise measurements of structures are possible with M
mode. M mode also provides textural information that permits discriminating between normal
and abnormal tissue.
The M mode display contains system information, a depth scale, a time scale, a TGC curve,
and a gray map pattern. There are three M mode display format options;
'Display Size'
on
page 7-8
The continuous update of the M mode display allows you immediately to recognize changes in
anatomical position relative to the M-cursor. With this instant information you can immediately
aim the M-line to the structures of interest by adjusting the probe or the M-cursor.
The description of M mode is subdivided in two groups. In these groups you will see how to
use M mode and how to adjust the M settings.
•
To use the M mode: 'M Main Menu'
on page 7-2
•
To adjust M setting: 'M Sub Menu'
on page 7-6
To use special utilities: 'Utilities'
on page 13-2
and 'Gray Map'
on page 6-22
M mode is also possible in combination with CF mode, TD Mode and HDF Mode:
'MCF Mode (M Color Flow Mode)'
on page 7-8
'MTD Mode (M Tissue Doppler Mode)'
on page 7-12
'MHDF Mode (MHD-Flow Mode)'
on page 7-16
7.1 M Main Menu
[M Mode] key (hard key)
By pressing the [M] control the M mode is switched on in the preparation mode, only the M-
cursor appears on the active 2D image. To start and use the M mode:
'M Operation'
on page
7-3
To adjust the M settings: 'M Sub Menu'
on page 7-6
This hard key is also the Gain control for the M mode (only in scan mode). 'M Gain Control'
on page 7-4
The “M Main” menu appears on the menu area. (scan mode)
M Mode
7-2
Voluson® S6/S8 Basic User Manual
5433669-100 Revision 4
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