Module 1: Learn

Review the foundations of digital image formation and detector technology.

Introduction

From exposure to digital image

Digital radiography converts exposure information into numerical data that can be processed, displayed, stored, and shared.

Core Concept

Image capture systems

Computed radiography stores energy in a photostimulable phosphor plate. Direct and indirect flat-panel systems convert exposure through different materials, while CCD systems use optical coupling to capture the signal.

Computed Radiography

A reusable plate stores the latent image until it is scanned.

Flat-Panel Detection

A detector array converts exposure into electronic image data.

Workflow

PACS and DICOM

DICOM defines how imaging information is formatted and exchanged. PACS provides the system used to store, retrieve, and distribute those images.

DICOM is the communication standard; PACS is the image-management environment.

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