Quantitative measurements of emphysema in ultra-high resolution computed tomography using model-based iterative reconstruction in comparison to that using hybrid iterative reconstruction

2022 ◽  
Author(s):  
Shun Muramatsu ◽  
Kazuhiro Sato ◽  
Tsuneo Yamashiro ◽  
Kunio Doi
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Iterative Reconstruction ◽  
High Resolution Computed Tomography ◽  
Model Based ◽  
Hybrid Iterative Reconstruction ◽  
Quantitative Measurements

Effect of Ultra High-Resolution Computed Tomography and Model-Based Iterative Reconstruction on Detectability of Simulated Submillimeter Artery

2020 ◽  
Vol 44 (1) ◽  
pp. 32-36 ◽  
Author(s):  
Hiroyuki Morisaka ◽  
Yuta Shimizu ◽  
Takuya Adachi ◽  
Keita Fukushima ◽  
Takahiro Arai ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Iterative Reconstruction ◽  
High Resolution Computed Tomography ◽  
Model Based

Noise reduction and image quality in ultra-high resolution computed tomography of the temporal bone using advanced modeled iterative reconstruction

2019 ◽  
Vol 60 (9) ◽  
pp. 1135-1143 ◽  
Author(s):  
Johann-Martin Hempel ◽  
Malte Niklas Bongers ◽  
Katharina Braun ◽  
Ulrike Ernemann ◽  
Georg Bier
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Image Quality ◽  
Noise Reduction ◽  
Temporal Bone ◽  
Iterative Reconstruction ◽  
High Resolution Computed Tomography

High-Resolution Computed Tomography Examinations for Chronic Suppurative Lung Disease in Early Childhood: Radiation Exposure and Image Quality Evaluations with Iterative Reconstruction Algorithm Use

2016 ◽  
Vol 67 (3) ◽  
pp. 218-224 ◽  
Author(s):  
Magdalini Smarda ◽  
Efstathios Efstathopoulos ◽  
Argyro Mazioti ◽  
Sofia Kordolaimi ◽  
Agapi Ploussi ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Image Quality ◽  
Radiation Exposure ◽  
Iterative Reconstruction ◽  
Reconstruction Algorithm ◽  
Filtered Backprojection ◽  
Reconstruction Algorithms ◽  
High Resolution Computed Tomography ◽  
Iterative Reconstruction Algorithm

Purpose High radiosensitivity of children undergoing repetitive computed tomography examinations necessitates the use of iterative reconstruction algorithms in order to achieve a significant radiation dose reduction. The goal of this study is to compare the iDose iterative reconstruction algorithm with filtered backprojection in terms of radiation exposure and image quality in 33 chest high-resolution computed tomography examinations performed in young children with chronic bronchitis. Methods Fourteen patients were scanned using the filtered backprojection protocol while 19 patients using the iDose protocol and reduced milliampere-seconds, both on a 64-detector row computed tomography scanner. The iDose group images were reconstructed with different iDose levels (2, 4, and 6). Radiation exposure quantities were estimated, while subjective and objective image qualities were evaluated. Unpaired t tests were used for data statistical analysis. Results The iDose application allowed significant effective dose reduction (about 80%). Subjective image quality evaluation showed satisfactory results even with iDose level 2, whereas it approached excellent image with iDose level 6. Subjective image noise was comparable between the 2 groups with the use of iDose level 4, while objective noise was comparable between filtered backprojection and iterative reconstruction level 6 images. Conclusions The iDose algorithm use in pediatric chest high-resolution computed tomography reduces radiation exposure without compromising image quality. Further evaluation with iterative reconstruction algorithms is needed in order to establish high-resolution computed tomography as the gold standard low-dose method for children suffering from chronic lung diseases.

Acute Pulmonary Oxygen Toxicity in Rats: Findings and Lung Density Changes in High Resolution Computed Tomography

2000 ◽  
Vol 42 (3) ◽  
pp. 473
Author(s):  
Dae Sik Ryu ◽  
Kun Sang Kim ◽  
Kil Hyen Kang ◽  
Haing Sup Chung ◽  
Bung Wok Lee ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Oxygen Toxicity ◽  
High Resolution Computed Tomography ◽  
Lung Density

Determination of the Activity of Pulmonary Tuberculosis: the Utility of High-Resolution Computed Tomography

2000 ◽  
Vol 42 (5) ◽  
pp. 757
Author(s):  
Myung Hee Chung ◽  
Hae Giu Lee ◽  
Won Jong Yu ◽  
Hong Jun Chung ◽  
Bo Sung Yang ◽  
...  
Keyword(s):  
Computed Tomography ◽  
High Resolution ◽  
Pulmonary Tuberculosis ◽  
High Resolution Computed Tomography

Bone marrow densitometry by clinical high resolution computed tomography of human vertebrae

2014 ◽  
Author(s):  
Jaime Pena ◽  
Graeme Campbell ◽  
Timo Damm ◽  
Reinhard Barkmann ◽  
Sonja Waldhausen ◽  
...  
Keyword(s):  
Computed Tomography ◽  
Bone Marrow ◽  
High Resolution ◽  
High Resolution Computed Tomography
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