Low-dose x-ray imaging GLG: restoration by Kalman filter

1999 ◽  
Author(s):  
Reza A. Zoroofi ◽  
Shinichi Tamura ◽  
Yoshinobu Sato ◽  
Yuji Ogata ◽  
Kazuo Inamoto ◽  
...  
Keyword(s):  
Kalman Filter ◽  
Low Dose ◽  
X Ray ◽  
X Ray Imaging

Dental cone-beam CT reconstruction from limited-angle view data based on compressed-sensing (CS) theory for fast, low-dose X-ray imaging

2014 ◽  
Vol 64 (12) ◽  
pp. 1907-1911
Author(s):  
Uikyu Je ◽  
Hyosung Cho ◽  
Minsik Lee ◽  
Jieun Oh ◽  
Yeonok Park ◽  
...  
Keyword(s):  
Compressed Sensing ◽  
Low Dose ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Ct Reconstruction ◽  
X Ray ◽  
X Ray Imaging ◽  
Limited Angle

scholarly journals Low Dose X-Ray Sources and High Quantum Efficiency Sensors: The Next Challenge in Dental Digital Imaging?

2014 ◽  
Vol 2014 ◽  
pp. 1-7
Author(s):  
Arnav R. Mistry ◽  
Daniel Uzbelger Feldman ◽  
Jie Yang ◽  
Eric Ryterski
Keyword(s):  
Low Dose ◽  
Image Resolution ◽  
X Ray ◽  
Imaging Technologies ◽  
Group 4 ◽  
X Ray Imaging ◽  
Group 3 ◽  
Group 5 ◽  
Group 2 ◽  
Group 1

Objective(s). The major challenge encountered to decrease the milliamperes (mA) level in X-ray imaging systems is the quantum noise phenomena. This investigation evaluated dose exposure and image resolution of a low dose X-ray imaging (LDXI) prototype comprising a low mA X-ray source and a novel microlens-based sensor relative to current imaging technologies.Study Design. A LDXI in static (group 1) and dynamic (group 2) modes was compared to medical fluoroscopy (group 3), digital intraoral radiography (group 4), and CBCT scan (group 5) using a dental phantom.Results. The Mann-Whitney test showed no statistical significance(α=0.01)in dose exposure between groups 1 and 3 and 1 and 4 and timing exposure (seconds) between groups 1 and 5 and 2 and 3. Image resolution test showed group 1 > group 4 > group 2 > group 3 > group 5.Conclusions. The LDXI proved the concept for obtaining a high definition image resolution for static and dynamic radiography at lower or similar dose exposure and smaller pixel size, respectively, when compared to current imaging technologies. Lower mA at the X-ray source and high QE at the detector level principles with microlens could be applied to current imaging technologies to considerably reduce dose exposure without compromising image resolution in the near future.

Sci-Fri AM(1): Imaging-01: Characterization of an Avalanche Detector for Low-Dose X-Ray Imaging

2009 ◽  
Vol 36 (9Part3) ◽  
pp. 4321-4321
Author(s):  
M Wronski ◽  
A Reznik ◽  
J Rowlands ◽  
W Zhao
Keyword(s):  
Low Dose ◽  
X Ray ◽  
X Ray Imaging

OP45 HTA Of A Pediatric Biplanar Low-Dose X-Ray Imaging System

2018 ◽  
Vol 34 (S1) ◽  
pp. 17-18
Author(s):  
Martina Andellini ◽  
Francesco Faggiano ◽  
Roxana di Mauro ◽  
Pietro Derrico ◽  
Matteo Ritrovato
Keyword(s):  
3D Reconstruction ◽  
Low Dose ◽  
Imaging System ◽  
Weight Bearing ◽  
Ct Scanning ◽  
Lower Limbs ◽  
Final Decision ◽  
X Ray ◽  
Congenital Deformities ◽  
X Ray Imaging

Introduction:Patients with adolescent idiopathic scoliosis frequently receive X-ray imaging at diagnosis and subsequent follow monitoring. To achieve the ALARA concept of radiation dose, a biplanar low-dose X-ray system (BLDS) has been proposed. The aim of the study is to gather evidence on safety, accuracy and overall effectiveness of a BLDS compared with CT scanning, in a pediatric population, in order to support the final decision on possible acquisition of such innovative diagnostic system.Methods:The new method Decision-oriented HTA (DoHTA) was applied to carefully assess the diagnostic technology. It was developed starting from the EUnetHTA Core Model® integrated with the analytic hierarchy process in order to identify all the relevant assessment aspects of the technology involved, identified from scientific literature, experts’ judgments and specific context analysis of Bambino Gesù Children's Hospital. A weight was associated to each assessment element and the alternatives’ ranking was defined.Results:This innovative system provides orthopedic images in standing or sitting position, being able to examine the spine and lower limbs under normal weight-bearing conditions. This system is recommended for particular clinical indications as scoliosis and other congenital deformities of the spine. It is able to acquire simultaneous posteroanterior and lateral images in a single scan without vertical distortion and with lower radiation exposure than CT scanning. 2D images acquired can be combined to obtain a 3D reconstruction scanning based on a semi-automated statistical model.Conclusions:The major advantages of BLDS are the relatively low dose of radiation and the possibility of obtaining a 3D reconstruction of the bones. Our preliminary results show that data on the clinical effectiveness are limited but the technical advancements of BLDS appear promising in terms of patient management and patient health outcomes associated with its use.

Highly Photosensitive Dual-Gate a-Si:H TFT and Array for Low-Dose Flat-Panel X-Ray Imaging

2016 ◽  
Vol 28 (18) ◽  
pp. 1952-1955 ◽  
Author(s):  
Xinghui Liu ◽  
Hai Ou ◽  
Jun Chen ◽  
Shaozhi Deng ◽  
Ningsheng Xu ◽  
...  
Keyword(s):  
Low Dose ◽  
Flat Panel ◽  
X Ray ◽  
X Ray Imaging ◽  
Dual Gate
Sign in / Sign up

Export Citation Format

Share Document