Chapter 54: 3D and 4D Evaluation of Fetal Anomalies

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1

acquisition

method of collecting patient anatomy as a series of slices, which are then processed and stored for display as 3D volume data

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automatic acquisition

method of collecting patient anatomy as a series of slices without having to manually move the probe during the acquisition process

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manual acquisition

original 3D method of collecting anatomy requiring the sonographer to manually slide the probe along the patient’s skin in order to collect anatomy as a series of slices

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mirror view

displays simultaneous rendered volume images from four different perspectives in real time

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multiplanar display

demonstrates anatomy as three simultaneous orthogonal scan planes (longitudinal, transverse, and coronal)

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multislice view

displays 3D anatomy as a series of sequential parallel images similar in display format to that of CT and MRI

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oblique view

2D drawing of an object with “forced” depth to represent a third dimension; from its inception, 2D ultrasound has dictated documentation of anatomy or pathology in two orthogonal scan planes (usually longitudinal and transverse)

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oblique view extended (OVIX)

similar to the oblique view but displays the corresponding volume slice instead of the corresponding planar image

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spatial temporal imaging correlation (STIC)

used to collect a greater amount of cardiac anatomic data using a longer acquisition time (12 to 15 seconds)

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volume slice

displays seven sequential 3D-rendered volume images simultaneously

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voxels

3D pixels that have assigned gray-scale values depending on the strength (amplitude) of the returning 2D echoes