Scattered radiation in flat-detector based cone-beam CT: analysis of voxelized patient simulations

2006 ◽  
Author(s):  
Jens Wiegert ◽  
Matthias Bertram
Keyword(s):  
Scattered Radiation ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Flat Detector ◽  
Patient Simulations ◽  
Ct Analysis

Soft-tissue contrast resolution within the head of human cadaver by means of flat-detector-based cone-beam CT

2004 ◽  
Author(s):  
Jens Wiegert ◽  
Matthias Bertram ◽  
Dirk Schaefer ◽  
Norbert Conrads ◽  
Niels Noordhoek ◽  
...  
Keyword(s):  
Soft Tissue ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Human Cadaver ◽  
Flat Detector ◽  
Contrast Resolution ◽  
Soft Tissue Contrast ◽  
Tissue Contrast

scholarly journals Cone-beam CT analysis of patients with obstructive sleep apnea compared to normal controls

2016 ◽  
Vol 46 (1) ◽  
pp. 9 ◽  
Author(s):  
Allison Buchanan ◽  
Ruben Cohen ◽  
Stephen Looney ◽  
Sajitha Kalathingal ◽  
Scott De Rossi
Keyword(s):  
Obstructive Sleep Apnea ◽  
Sleep Apnea ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Obstructive Sleep ◽  
Ct Analysis ◽  
Normal Controls

SU-FF-I-22: Scatter Correction for Flat Detector Cone-Beam CT Based On Simulated Sphere Models

2007 ◽  
Vol 34 (6Part3) ◽  
pp. 2342-2343 ◽  
Author(s):  
M Bertram ◽  
S Hohmann ◽  
J Wiegert
Keyword(s):  
Cone Beam Ct ◽  
Scatter Correction ◽  
Cone Beam ◽  
Flat Detector

Flat detector cone beam CT-guided nephrostomy using virtual navigation in patients with iatrogenic ureteral injury

2017 ◽  
Vol 122 (8) ◽  
pp. 557-563 ◽  
Author(s):  
Dechao Jiao ◽  
Zongming Li ◽  
Zhiguo Li ◽  
Shaofeng Shui ◽  
Xin-wei Han
Keyword(s):  
Cone Beam Ct ◽  
Ureteral Injury ◽  
Cone Beam ◽  
Flat Detector ◽  
Virtual Navigation ◽  
Ct Guided ◽  
Iatrogenic Ureteral Injury

Flat Detector Cone-Beam CT

2013 ◽  
Vol 23 (2) ◽  
pp. 91
Author(s):  
Marc Kachelrieß
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Flat Detector

scholarly journals The dimensions of the facial alveolar bone at tooth sites with local pathologies‐ A cone‐beam CT analysis

2019 ◽  
Vol 30 (S19) ◽  
pp. 49-49
Author(s):  
Ausra Ramanauskaite ◽  
Hafez Christian Kassira ◽  
Jürgen Becker ◽  
Robert Sader ◽  
Frank Schwarz
Keyword(s):  
Alveolar Bone ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Ct Analysis

Performance of standard fluoroscopy antiscatter grids in flat-detector-based cone-beam CT

2004 ◽  
Author(s):  
Jens Wiegert ◽  
Matthias Bertram ◽  
Dirk Schaefer ◽  
Norbert Conrads ◽  
Jan Timmer ◽  
...  
Keyword(s):  
Cone Beam Ct ◽  
Cone Beam ◽  
Flat Detector

scholarly journals Cone Beam CT Analysis of Haller Cells: Prevalence and Relationship with Orbital Floor Dehiscence

2021 ◽  
Author(s):  
Mahkameh Moshfeghi ◽  
hamidreza dehini ◽  
Mitra Ghazizadeh Ahsaie
Keyword(s):  
Cone Beam Ct ◽  
Cross Sectional Study ◽  
Cone Beam ◽  
Orbital Floor ◽  
Sectional Study ◽  
Chi Square ◽  
Cross Sectional ◽  
Ct Analysis ◽  
Bony Anatomy ◽  
Air Cells

Abstract Background and aim: Haller cells arise from anterior ethmoid air cells and are located in the medial orbital floor, lateral to the maxillary infundibulum. The aim of this cross-sectional study was to determine the prevalence of the Haller cells and its relationship with orbital floor dehiscence on cone beam CT images. Materials and Methods CBCT images of 120 patients were interpreted in coronal plane for the presence of Haller cells and orbital floor dehiscence. The prevalence of Haller cell, presence of dehiscence, unilateral or bilateral frequency were assessed. In addition, the size were categorized in three groups of small, medium and large. Chi-square and Cochran-Mantel-Haenszel tests were used for statistical analysis of the data and p<0.05 was considered to be significant. Results A total of 51 male and 69 female with Mean±SD age of 38.84±68.14 were assessed. The overall prevalence of Haller cells was 56.7%, of which 44 (64.7%) were unilateral and 24 were bilateral (35.3%). The majority of the cells (70.7%) were seen in medium (2-4mm) sized. There was a significant association between Haller cells and orbital floor dehiscence (p=0.002). Conclusion The prevalence of Haller cells was remarkably high and presence of Haller cells was strongly associated with ipsilateral orbital floor dehiscence. Based on the findings of this study, CBCT can be useful in delineation of the bony anatomy of sinonasal complex.

SU-GG-I-30: Magnitude of Scattered Radiation and Dose Efficiency in Volume-Of-Interest (VOI) Cone Beam CT

2008 ◽  
Vol 35 (6Part3) ◽  
pp. 2649-2649
Author(s):  
C Lai ◽  
L Chen ◽  
T Han ◽  
X Liu ◽  
Y Shen ◽  
...  
Keyword(s):  
Scattered Radiation ◽  
Cone Beam Ct ◽  
Cone Beam ◽  
Volume Of Interest ◽  
Dose Efficiency
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