Chest Imaging with Dual-Energy Subtraction Digital Tomosynthesis

1993 ◽  
Vol 34 (4) ◽  
pp. 346-350 ◽  
Author(s):  
S. Sone ◽  
T. Kasuga ◽  
F. Sakai ◽  
H. Hirano ◽  
K. Kubo ◽  
...  
Keyword(s):  
Low Voltage ◽  
Image Data ◽  
Dual Energy ◽  
Processing Unit ◽  
Digital Tomosynthesis ◽  
Chest Imaging ◽  
Layer Height ◽  
Pulmonary Lesions ◽  
X Ray ◽  
Energy Subtraction

Dual-energy subtraction digital tomosynthesis with pulsed X-ray and rapid kV switching was used to examine calcifications in pulmonary lesions. The digital tomosynthesis system used included a conventional fluororadiographic TV unit with linear tomographic capabilities, a high resolution videocamera, and an image processing unit. Low-voltage, high-voltage, and soft tissue subtracted or bone subtracted tomograms of any desired layer height were reconstructed from the image data acquired during a single tomographic swing. Calcifications, as well as their characteristics and distribution in pulmonary lesions, were clearly shown. The images also permitted discrimination of calcifications from dense fibrotic lesions. This technique was effective in demonstrating calcifications together with a solitary mass or disseminated nodules.

Chest Imaging with Dual-Energy Subtraction Digital Tomosynthesis

1993 ◽  
Vol 34 (4) ◽  
pp. 346-350 ◽  
Author(s):  
S. Sone ◽  
T. Kasuga ◽  
F. Sakai ◽  
H. Hirano ◽  
K. Kubo ◽  
...  
Keyword(s):  
Dual Energy ◽  
Digital Tomosynthesis ◽  
Chest Imaging ◽  
Energy Subtraction

Chest Imaging with Dual-Energy Subtraction Digital Tomosynthesis

1993 ◽  
Vol 34 (4) ◽  
pp. 346-350
Author(s):  
S. Sone ◽  
T. Kasuga ◽  
F. Sakai ◽  
H. Hirano ◽  
K. Kubo ◽  
...  
Keyword(s):  
Dual Energy ◽  
Digital Tomosynthesis ◽  
Chest Imaging ◽  
Energy Subtraction

Comparison of Chest Dual-energy Subtraction Digital Tomosynthesis and Dual-energy Subtraction Radiography for Detection of Pulmonary Nodules

2013 ◽  
Vol 20 (11) ◽  
pp. 1357-1363 ◽  
Author(s):  
Tsutomu Gomi ◽  
Miwako Nozaki ◽  
Tohoru Takeda ◽  
Tokuo Umeda ◽  
Kazutoshi Takahashi ◽  
...  
Keyword(s):  
Pulmonary Nodules ◽  
Dual Energy ◽  
Digital Tomosynthesis ◽  
Energy Subtraction

scholarly journals Efficiency and reporting confidence analysis of sequential dual-energy subtraction for thoracic x-ray examinations

2019 ◽  
Vol 2019 (1) ◽  
Author(s):  
Mehmet Can Gezer ◽  
Oktay Algin ◽  
Aytac Durmaz ◽  
Halil Arslan
Keyword(s):  
Dual Energy ◽  
X Ray ◽  
Energy Subtraction

Investigation of dual-energy X-ray photon counting using a cadmium telluride detector and two comparators and its application to photon-count energy subtraction

2014 ◽  
Vol 53 (10) ◽  
pp. 102202 ◽  
Author(s):  
Osahiko Hagiwara ◽  
Eiichi Sato ◽  
Manabu Watanabe ◽  
Yuich Sato ◽  
Yasuyuki Oda ◽  
...  
Keyword(s):  
Cadmium Telluride ◽  
Photon Counting ◽  
Dual Energy ◽  
X Ray ◽  
Photon Count ◽  
Energy Subtraction

A PHANTOM TEST OF PROTON-INDUCED DUAL-ENERGY X-RAY ANGIOGRAPHY USING IODINATED CONTRAST MEDIA

2007 ◽  
Vol 17 (01n02) ◽  
pp. 11-21 ◽  
Author(s):  
Y. OGURI ◽  
J. HASEGAWA ◽  
M. OGAWA ◽  
J. KANEKO ◽  
K. SASA
Keyword(s):  
Contrast Media ◽  
Dual Energy ◽  
Characteristic Line ◽  
X Rays ◽  
Iodinated Contrast Media ◽  
X Ray ◽  
Cdte Detector ◽  
Iodinated Contrast ◽  
Subtraction Procedure ◽  
Energy Subtraction

Characteristic-line radiation from heavy metal targets bombarded by MeV proton beams has been tested as an X-ray source for dual-energy K-edge subtraction imaging for human angiography (blood vessel imaging) based on iodinated contrast media. To utilize the strong absorption by iodine (Z = 53) at its K-absorption edge (33.2 keV), we used K α-line of La (lanthanum, Z = 57) at 33.4 keV. As a reference, also K α X emission of Sn (tin, Z = 50) at 25.2 keV was employed. Metallic plates of La and Sn were irradiated by 7-MeV protons to produce these characteristic X-rays. Energy-subtraction method was tested using Lucite phantoms which contain aqueous solutions of KI (potassium iodide) with different concentrations. Also Ca ( H 2 PO 4)2 powder was stuffed in these phantoms to simulate bones. The transmission images of the phantoms were recorded on imaging plates. During the exposure, the energy spectra of the X-rays were monitored by a CdTe detector. We found that the contrast of images of iodide solutions taken with La X-rays was higher than that with Sn X-rays. Also the energy subtraction procedure was successfully applied to reduce the graphical noise due to the bones and inhomogeneity of the soft tissue. However, to apply the present method to actual clinical use, the X-ray intensity must be increased by several orders of magnitude. Also the transmission of the “lower-energy” photons has to be a few orders higher for imaging of objects as thick as human chest.

scholarly journals EVALUATION OF DUAL ENERGY SUBTRACTION USING A CONDENSER-TYPE X-RAY APPARATUS AND FCR

1987 ◽  
Vol 43 (9) ◽  
pp. 1413-1419
Author(s):  
YOSHIYUKI UMEZU ◽  
KAZUHISA OGAWA ◽  
HIROFUMI YUZURIHA
Keyword(s):  
Dual Energy ◽  
X Ray ◽  
Energy Subtraction

scholarly journals The potential application of dual-energy subtraction radiography for COVID-19 pneumonia imaging

2021 ◽  
pp. 20201384
Author(s):  
Brent van der Heyden
Keyword(s):  
Soft Tissues ◽  
Imaging Techniques ◽  
Dual Energy ◽  
X Ray ◽  
X Ray Imaging ◽  
Imaging Application ◽  
Chest X Ray ◽  
Energy Subtraction ◽  
Potential Use

X-ray imaging plays a crucial role in the confirmation of COVID-19 pneumonia. Chest X-ray radiography and CT are two major imaging techniques that are currently adopted in the diagnosis of COVID-19 pneumonia. However, dual-energy subtraction radiography is hardly discussed as potential COVID-19 imaging application. More advanced X-ray radiography equipment often supports dual-energy subtraction X-ray radiography. Dual-energy subtraction radiography enables the calculation of pseudo-radiographs, in which bones are removed and only soft-tissues are highlighted. In this commentary, the author would like to draw the attention to the potential use of dual-energy subtraction X-ray radiography (i.e. soft-tissue pseudo-radiography) for the assessment and the longitudinal follow-up of COVID-19 pneumonia.

Sign in / Sign up

Export Citation Format

Share Document