Intro to 3D Post-Processing Flashcards

Question

oblique planes

Answer 1

A

3D image rendering done after image acquisition.

Answer 2

A

A versatile 3D post-processing software package from Vital Images that we use for a wide variety of cases.

It is especially good for cases that:

require hand-drawn contours
require 3D measurements
are complex and hands-on
have a protocol still in development

The available workflows contain case-specific presets, and the user has ultimate control over the final output. This leaves more details up to the user, however, and this can be more time-consuming than in other programs. Most output takes the form of snapshots, batch rotations, centerline rotations, and reports.

3D volumetric data is divided among different “folders,” whose properties can then be manipulated separately. 3D volumetric data cannot occupy multiple folders simultaneously, except for the Vessel layer. Users may also create their own centerlines of vessels, or edit centerlines automatically created by a workflow.

Answer 3

A

A streamlined 3D post-processing software package from Siemens that we use for a wide variety of cases.

It is especially good for cases that:

are common, routine, and have well-established protocols
require post-processing of thousands of images
do not have anomalous anatomy

The available workflows tend to have built-in steps and prompts, and the user has less control over the final output. The lack of choice tends to result in more efficient post-processing, however. Most output takes the form of snapshots, batch rotations, centerline rotations, and reports.

3D volumetric data is divided among different “segmentation objects,” whose properties can then be manipulated separately. The same data may occupy multiple segmentation objects, or “cut out” other objects. Users may also create their own centerlines of vessels, or edit centerlines automatically created by a workflow.

Answer 4

A

A 3D post-processing software package from Philips that we use for prostate MR cases.

Answer 5

A

Multi-Planar Reconstruction

An image series of one plane that was reconstructed from the image data of another plane. Usually, data from the axial plane is converted to nonaxial planes such as coronal, sagittal, or oblique planes. This can be done most effectively with thin-slice CT and MR data.

Answer 6

A

Curved Planar Reformation

The acquired data, for example from the axial plane, can then be converted to nonaxial planes such as coronal, sagittal or oblique. In addition, with the aid of various software, several manipulations of the data can be made. One of these methods, called curved planar reformation (CPR), involves tracing a structure, usually a blood-vessel, and generating a planar (two-dimensional) image that transects the structure along its short axis. This is very useful in CT angiography (CTA).