Real-Time Imaging and Display

Flashcards covering vocabulary and key concepts related to Real-Time Imaging and Display, including ultrasound techniques, frame rates, imaging parameters, and diagnostic technologies.

Real-Time Imaging

The process of creating a cinematic view of tissue using many imaging frames, resembling a movie rather than a photograph.

Frame

One complete ultrasound image.

Scan lines

Created when pulses of sound return from tissue, containing information about depth and amplitude.

Temporal Resolution

The ability to display structures in real-time, determined by how quickly frames are generated.

Frame Rate (FR)

The number of frames produced per second, measured in hertz (Hz).

Pulse Repetition Frequency (PRF)

The frequency of sound pulses sent out by the ultrasound machine, determining frame rate.

Inversely Related

A relationship where one value increases while the other decreases, such as frame rate and imaging depth.

Sector Size

The field or view of the ultrasound image, which affects the number of pulses required to create an image.

Multi-Focusing

A technique where multiple foci are used, increasing the number of pulses per frame and reducing frame rate.

Line Density

The spacing between sound beams in an ultrasound image, affecting spatial and temporal resolution.

Bistable Display

A video display limited to black and white, with no shades of gray.

Gray-Scale Sonography

Brightness mode imaging represented by various shades of gray in ultrasound.

M Mode

Motion mode display that shows depth versus time, tracing the motion of structures.

A Mode

Amplitude mode display used in ophthalmic imaging to show depth versus amplitude.

Digital Imaging and Computers in Medicine (DICOM)

A set of rules that allows imaging systems to share information on a network.

Picture Archiving and Communication System (PACS)

A digital ultrasound system that archives images and medical information for easy access.

Elastography

A sonographic technique used to evaluate tissue stiffness, aiding in diagnosing conditions.

Strain Elastography

Measures tissue strain due to compression and is operator dependent.

Acoustic Radiation Force Impulse (ARFI) Elastography

Similar to strain elastography but uses acoustic radiation force to compress soft tissue.

Shear Wave Elastography (SWE)

Uses sound waves to produce shear waves for measuring tissue displacement.

Intravascular Ultrasound (IVUS)

A medical imaging technique using a catheter with a miniaturized ultrasound probe to visualize vascular conditions.

High Temporal Resolution

Achieved with a high frame rate and shallow imaging.

Low Line Density

Results in higher frame rates and better temporal resolution.

Multi-Focal Imaging

Improves lateral resolution but decreases temporal resolution.

Thermal Imaging

Method of recording images on paper using heat.

Laser Imaging

Automated film handling that produces high-resolution images with better gray scale.

Filming Devices

Include X-ray, thermal printers, and digital recording devices for capturing ultrasound images.

Time for One Frame (Tframe)

The time it takes to create and display one ultrasound image.

Brightness Mode (B Mode)

A mode that presents ultrasound images in gray scale.

Cathode Ray Tube (CRT)

A traditional monitor type that displays video information through electron beams.

Liquid Crystal Display (LCD)

A flat-panel display technology commonly used for modern ultrasound systems.

Compression in Elastography

Refers to the method of evaluating tissue stiffness through induced strain.

Static ELASTOgraphy

Involves measuring tissue strain due to manual compression.

Acoustic Stiffness Measurement

Utilized in determining liver stiffness via shear wave elastography.

Miniaturized Probe

A tiny ultrasound probe used in intravascular applications.

Computerized Ultrasound Equipment

Devices that process ultrasound data for imaging and analysis.

Field of View (FOV)

The visible area captured in an ultrasound image.

Trade-Offs in Ultrasound Imaging

The necessary balance between imaging quality and temporal resolution.

Medical Imaging Methodologies

The techniques used to visualize internal structures of the body.

Higher Frame Rate

Indicates more frames per second, resulting in better temporal resolution.

Shallow Imaging

Refers to imaging at a lesser depth, improving frame rate.

Depth of Imaging

The distance to which the ultrasound beams penetrate into the body.

Excellent Image Quality

Achieved through techniques including high line density and multi-focusing.

Video Display Technology

Used to represent ultrasound images visually on monitors.

Frame Creation Process

Involves sending sound pulses through tissues to create ultrasound frames.

Image Memory Storage

The digital space where ultrasound images and data are saved.

Video Home System (VHS)

An example of a format used for recording ultrasound motion or real-time imaging.

Magnetic Optical Disk

A medium for securely storing medical images.

Data Security in PACS

Ensures protection of medical data stored digitally.

Network Imaging Transfer

The ability to send ultrasound images to different locations.

Digital Transformation in Radiology

Adoption of digital methods in capturing and storing medical images.

Image Acquisition

The process of capturing images using ultrasound technology.

Soft Tissue Imaging

Refers to imaging techniques specifically for observing soft tissues.

Transducer Responsibilities

To send out scan lines across the defined imaging plane.

Vascular Conditions Evaluation

Using IVUS to assess issues within blood vessels,

Real-Time Display

The ability to visualize multiple frames rapidly in ultrasound imaging.

Echo-Amplitude Numbers

Quantitative values representing signal strength in ultrasound imaging.

Thermal Processors

Devices used to chemically imprint images onto paper.

Ultrasound System Settings

Adjustments made by operators that influence image capture.

Improved Spatial Resolution

Achieved through higher line density in ultrasound imaging.

Reverse Relationships in Ultrasound

Concepts in ultrasound that are inversely related, affecting overall imaging.

Dynamic Imaging Capacity

The capability to display moving structures in ultrasound.

Ultrasound Monitor Types

Different display technologies used for viewing ultrasound images.

Diagnostic Sonography Advances

Improvements in ultrasound technology affecting diagnostic capability.

Imaging Parameters Optimization

Adjusting settings for the best possible ultrasound results.

Pulses per Frame

The number of sound pulses needed to create each ultrasound image.

Imaging Application Specificity

Different ultrasound techniques suited for various clinical scenarios.

Documentation of Imaging Procedures

The recording of methods and systems used during ultrasound examinations.

Clinical Applications of Elastography

Using elastography for medical diagnoses including stiffness evaluation.

Frame Rates and Temporal Resolution

The relationship between how many frames are generated per second.

Image Access in PACS

Ability to retrieve medical imaging studies digitally.

Assessment and Diagnosis

Utilizing ultrasound technologies for determining medical conditions.

KPa Measurements in SWE

Kilopascals used as a unit of measurement for tissue stiffness.

Imaging Innovations in Medicine

Emerging technologies improving medical imaging quality and utility.

Efficient Patient Diagnosis

The goal of utilizing advanced imaging techniques in patient care.

Trade-Offs in Imaging Techniques

The need to balance between different imaging qualities for optimal outcomes.

Real-Time Imaging Techniques

Methods focusing on live imaging outputs for diagnostics.