One-shot dual-energy subtraction chest imaging with computed radiography: clinical evaluation of film images.

Abstract

A clinical evaluation of one-shot dual-energy subtraction chest imaging by means of computed radiography (CR) with imaging plates was carried out in a comparison with the original plain CR images. In analyses of chest images of 140 patients, new information, not detected on the original plain CR images, was obtained on subtraction images in 21 patients (15%). Receiver operating characteristic curve studies also verified the superiority of CR subtraction over the original plain CR images for the detection of pulmonary nodules, calcification in a nodule, and rib lesions. Subtraction images complemented the original plain images.

The clinical utility of a one-shot energy subtraction method for thoracic spine radiography

“…Low energy information is obtained from the imaging plate in front of a copper plate. High energy information is obtained from the imaging plate in back of the copper plate, as the metal filters out the low energy information [1][2][3][4].…”

“…This one-shot energy subtraction method [1][2][3][4], which has already been 2 effectively used in chest radiography, is one of several image processing technologies. The one-shot energy subtraction method is a unique kind of image processing.…”

“…Using the energy absorption characteristics differences between bones and soft tissues in the chest, bone images and soft tissue images are visualized separately [1]. The one-shot energy subtraction method has already been effectively used for a wide range of clinical applications with chest images comprised of soft tissue only [2][3][4].…”

“…Although the one-shot energy subtraction method for bone images has already been effectively used for clearly visualizing rib bones on chest radiographs [2][3][4], it has not yet been applied to thoracic spine imaging. The purpose of this study was to evaluate whether thoracic spine radiographs generated using this processing could more clearly visualize the spine than the corresponding original thoracic spine radiographs.…”

Comparison of Chest Dual-Energy Subtraction Digital Tomosynthesis and Conventional Digital Tomosynthesis for the Detection of Simulated Pulmonary Nodules with Calcifications: Phantom Study

“…Despite recent developments in CT techniques, difficulties remain, such as shifting of the slice level in thin-section CT images acquired during different breaths, and difficulty in clarifying the characteristics and distribution of calcifications relative to soft tissue components of the mass. Dual-energy digital radiography has been found useful in detecting calcifications [6,9,[15][16][17][18]. Projection images acquired using DES techniques, however, suffer from the problem of overlap of anatomic features (e.g., calcifications superimposed over the ribs or spine).…”