Exam CDI-GEOM

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Exam 6.0.3[edit]

CDI-GEOM.jpg

Changing the optimized preset settings through Color FR will load default values for the other parameters, specially the two Line Density parameters:

  • Color FR

Transmit Beam Forming[edit]

The beam steering angle is determined through:

  • Steer

Temporal Shape of the RF Data[edit]

The down-sampling rate applied to the RF data is determined by RF Decimation.

  • RF Decimation

Sequencing[edit]

The number of lines used in the CDI sequence for the entire width of the transducer array is determined by the CLD which stands for CDI Line Density. For the B-mode section of the sequence, the Line Density determines the number of lines:

  • CLD
  • Line Density

The extents of the CDI box with respect to the B-mode image, is determined through Color Box. This parameter also determines the sequence of ensembles that is programmed, as the Color Doppler sequence is only acquired for this box.

  • Color Box

Processing[edit]

The data is down-sampled a second time, after it has been converted to I/Q data. The sampling frequency of the I/Q data is determined by CSF (CDI Sampling Frequency):

  • CSF