Digital Fluoroscopy Lecture Notes

These vocabulary flashcards cover the key terms and concepts related to digital fluoroscopy based on the provided lecture notes.

Fluoroscopy

A technique that produces dynamic images displayed in real time, used to study anatomical structures and the motion of organs and contrast media.

Digital Fluoroscopy

An advanced form of fluoroscopy utilizing flat-panel dynamic detectors, allowing for improved image quality and processing.

DIP (Digital Image Processing)

A process where data collected from a patient during imaging is converted into digital data for further computer processing.

ADC (Analog-to-Digital Converter)

A device that converts continuous analog signals into discrete digital data, crucial for generating digital images.

Voxel

A three-dimensional pixel representing a volume element in digital imaging.

Bit Depth

The number of bits used to represent the color and shades of an image, affecting the image quality and resolution.

Field of View (FOV)

The extent of the observable area in imaging, directly impacting magnification, dose, and resolution.

Image Enhancement

A digital image processing operation that improves the visual quality of an image, often through techniques like contrast enhancement.

Digital Subtraction Angiography

A specialized form of digital imaging that enhances blood vessels for clearer visualization by subtracting background images.

Matrix Size

The arrangement of pixels in a digital image, influencing resolution and image detail.

Dynamic Image

An image that changes over time to depict moving objects, as opposed to a static image.

Output Signal

The processed signal that represents the digital image as it is displayed or stored.

Image Synthesis

Creating new images from existing images or non-image data, often used to reduce patient exposure to radiation.

Spatial Resolution

The ability of an imaging system to distinguish small details in the image.

Contrast Resolution

The ability to differentiate between similar tissues based on their density in the image.

Temporal Frame Averaging

A technique used to reduce noise in images by averaging several consecutive frames.

Last Image Hold (LIH)

A feature that displays the last obtained image continuously when the x-ray beam is turned off, reducing patient radiation exposure.

Compression Techniques

Methods used in digital imaging to reduce file size, including lossy and lossless compression.

Flat Panel Detectors (FPD)

Modern imaging technology replacing traditional image intensifiers, providing better image quality and processing capabilities.

Digital Radiography (DR)

A form of radiography that captures images electronically rather than on film, enhancing the speed and quality of imaging.

Pin-cushion Distortion

A type of image distortion that affects the shape of images, common in certain imaging systems.

DICOM Standards

Protocols for handling, storing, and transmitting medical images and related information.

Image Processing Algorithms

Computational techniques used to manipulate images for enhanced performance and diagnostic capabilities.

Window Width (WW) & Window Level (WL)

Controls for adjusting image contrast and brightness in digital imaging.