digital radiography


Artifacts: Digital – Computed Radiography (CR) / phosphor plates

Increased density E (increased exposure to x rays) E =↑ Exposure (x rays) This occurs when the phosphor plate is overexposed (i.e. using a molar setting for an anterior radiograph). Increased density due to incorrect time setting. Decreased density E (decreased exposure to x rays) E (increased exposure to visible […]


Artifacts: Digital – Digital Radiography (DR) / sensors

The entire acronym of DEBT does not apply to both digital radiography (DR) and computed radiography (CR) systems.  Since both systems are a little different with artifacts I have broken them up into two separate posts. Increased density E (increased exposure to x rays) E =↑ Exposure (x rays) This […]


ROC curves in Dentistry

This week I’m focusing on ROC curves in dentistry and the different imaging modalities (primarily film versus digital).  As these numbers can change based on the research being performed and the reviewers of those radiographs, I thought the best way to break this all down is to give a short […]


ROC curves: What are they? 2

I am going to give a short introduction to ROC (Receiver Operating Characteristic) curves.  This term is frequently used in radiology research and I just wanted to give you a little information to know whether or not the ROC curve is significant or not. What is an ROC curve? An […]


Digital radiography: Detector Sensitivity

This last post on digital radiography is on detector sensitivity.  This is probably the most talked about characteristic of digital radiography when the systems are being hyped.  Detector sensitivity is the ability of the sensor/phosphor plate to respond to small amounts of radiation.  There is no term used to measure […]