Ultrasound Imaging Techniques Review

This set of flashcards covers key terms and concepts related to ultrasound imaging techniques as discussed in the lecture.

Preprocessing

Processes applied to an image before it is stored in memory, such as edge enhancement and pixel interpolation.

Post Processing

Manipulation of an image after it is stored in memory, allowing for reversible changes, like zooming or adjusting grayscale.

Spatial Compounding

A technique that reduces artifacts by averaging multiple scan lines taken from different angles.

Persistence

Frame averaging technique used to remove noise artifacts in images by holding previous frames in memory.

Edge Enhancement

A preprocessing function that sharpens the edges of structures in an image for clearer boundaries.

Pixel Interpolation

The method of filling in missing pixels based on the brightness of surrounding tissues to create a more complete image.

Panoramic Imaging

A technique that allows for a wider field of view by stitching together multiple images.

Bit

The smallest unit of computer memory, representing a binary digit (0 or 1).

Pixel Density

The number of pixels per inch, affecting the detail and clarity of a digital image.

Contrast Resolution

The ability to distinguish between different shades of gray in an image.

Read Magnification

Post-processing magnification applied after an image is frozen, using the original data to zoom in.

Write Magnification

Pre-processing magnification performed before freezing the image, allowing for new data to be recorded.

4D Imaging

Real-time three-dimensional imaging, visualizing moving structures as they are captured.

DICOM

Digital Imaging and Communication in Medicine; a standard for managing, storing, and transmitting medical imaging information.

PACS

Picture Archiving and Communication System; a medical imaging technology used for storing and sharing images.

B-mode

A display mode that represents the brightness of returned echoes as a two-dimensional grayscale image.

M-mode

A display mode that shows depth versus time, useful for tracking moving structures like the heart.

Noise Artifact

Unwanted disturbances in an image that can obscure visible details.

Axial Resolution

The ability to distinguish two structures that are close together along the axis of the sound beam.