The effect of interobserver differences in post-implant prostate CT image interpretation on dosimetric parameters

2003 ◽  
Vol 30 (6) ◽  
pp. 1096-1102 ◽  
Author(s):  
Ben H. Han ◽  
Kent Wallner ◽  
Gregory Merrick ◽  
Kas Badiozamani ◽  
Wayne Butler
Keyword(s):  
Image Interpretation ◽  
Ct Image ◽  
Interobserver Differences

scholarly journals SUV navigator enables rapid [18F]-FDG PET/CT image interpretation compared with 2D ROI and 3D VOI evaluations

2017 ◽  
Vol 35 (7) ◽  
pp. 398-403
Author(s):  
Atsutaka Okizaki ◽  
Michihiro Nakayama ◽  
Shunta Ishitoya ◽  
Kaori Nakajima ◽  
Masaaki Yamashina ◽  
...  
Keyword(s):  
Fdg Pet ◽  
Image Interpretation ◽  
Ct Image ◽  
Pet Ct ◽  
18F Fdg ◽  
Fdg Pet Ct

Principles of CT Image Interpretation

2013 ◽  
pp. 29-34 ◽  
Author(s):  
Jimmy Saunders ◽  
Tobias Schwarz
Keyword(s):  
Image Interpretation ◽  
Ct Image

Bowel-cleansing methods affecting PET-CT image interpretation

2011 ◽  
Vol 32 (7) ◽  
pp. 570-574 ◽  
Author(s):  
Dom-Gene Tu ◽  
Cheng-Ren Chen ◽  
Yu-Wen Wang ◽  
Chi-Wen Tu ◽  
Yung Cheng Huang
Keyword(s):  
Image Interpretation ◽  
Ct Image ◽  
Bowel Cleansing ◽  
Pet Ct

Essentials of CT Image Interpretation

2019 ◽  
pp. 281-316
Author(s):  
Davide Caramella ◽  
Matteo Revelli ◽  
Alessandro Villa
Keyword(s):  
Image Interpretation ◽  
Ct Image

Feasibility of Using a Walking Workstation During CT Image Interpretation

2008 ◽  
Vol 5 (11) ◽  
pp. 1130-1136 ◽  
Author(s):  
Jeff L. Fidler ◽  
Robert L. MacCarty ◽  
Stephen J. Swensen ◽  
James E. Huprich ◽  
Warren G. Thompson ◽  
...  
Keyword(s):  
Image Interpretation ◽  
Ct Image

Automatic classification of lung tumour heterogeneity according to a visual-based score system in dynamic contrast enhanced CT sequences

2016 ◽  
Vol 27 (09) ◽  
pp. 1650106 ◽  
Author(s):  
Alessandro Bevilacqua ◽  
Serena Baiocco
Keyword(s):  
Visual Analysis ◽  
Image Interpretation ◽  
Quantitative Information ◽  
Lung Tumour ◽  
Ct Image ◽  
Body Parts ◽  
Contrast Enhanced Ct ◽  
Contrast Enhanced ◽  
Enhanced Ct ◽  
Spatio Temporal

Computed tomography (CT) technologies have been considered for a long time as one of the most effective medical imaging tools for morphological analysis of body parts. Contrast Enhanced CT (CE-CT) also allows emphasising details of tissue structures whose heterogeneity, inspected through visual analysis, conveys crucial information regarding diagnosis and prognosis in several clinical pathologies. Recently, Dynamic CE-CT (DCE-CT) has emerged as a promising technique to perform also functional hemodynamic studies, with wide applications in the oncologic field. DCE-CT is based on repeated scans over time performed after intravenous administration of contrast agent, in order to study the temporal evolution of the tracer in 3D tumour tissue. DCE-CT pushes towards an intensive use of computers to provide automatically quantitative information to be used directly in clinical practice. This requires that visual analysis, representing the gold-standard for CT image interpretation, gains objectivity. This work presents the first automatic approach to quantify and classify the lung tumour heterogeneities based on DCE-CT image sequences, so as it is performed through visual analysis by experts. The approach developed relies on the spatio-temporal indices we devised, which also allow exploiting temporal data that enrich the knowledge of the tissue heterogeneity by providing information regarding the lesion status.

scholarly journals CT interpretation of craniofacial anomalies: a comparative analysis by undergraduate dental students

2005 ◽  
Vol 19 (1) ◽  
pp. 58-62 ◽  
Author(s):  
Bruno Felipe Gaia ◽  
Andréia Perella ◽  
Ana Cláudia Ballet de Cara ◽  
José Leopoldo Ferreira Antunes ◽  
Marcelo Gusmão Paraiso Cavalcanti
Keyword(s):  
Computed Tomography ◽  
Undergraduate Students ◽  
Gold Standard ◽  
Image Interpretation ◽  
Dental Students ◽  
Accuracy Evaluation ◽  
Ct Image ◽  
Craniofacial Anomalies ◽  
3D Ct ◽  
Examiner Agreement

The aim of this study was to evaluate the accuracy and reproducibility of computed tomography (CT) image interpretation made in axial slices (2D-CT) and 3D reconstructed images (3D-CT) of patients with craniofacial anomalies. The analyses were made by undergraduate dental students, and compared with the diagnoses considered upon surgical intervention. Computed tomography of 43 patients were analyzed independently by three calibrated examiners (undergraduate students) with, respectively, one, two, and three semesters of experience in craniofacial CT training and interpretation. The analysis of 2D-CT and 3D-CT images were performed at distinct times using an independent workstation associated with a specific computer graphics software for volumetric images. The analysis of inter-examiner agreement and of the agreement between observers and the gold standard was performed using the Kappa test. The accuracy evaluation presented a progressively higher value for examiners with progressively broader experience in 2D-CT and 3D-CT image interpretation. 3D-CT analyses allowed a higher inter-examiner agreement (1 - 0.896) than 2D-CT analyses (1 - 0.614). 3D-CT was considered more precise and accurate than 2D-CT for all students' evaluations. The reproducibility and accuracy varied according to the experience in CT interpretation, and the most experienced student achieved results closer to the gold standard.

scholarly journals Inter- and Intraobserver Agreement of 18 F-FDG PET/CT Image Interpretation in Patients Referred for Assessment of Cardiac Sarcoidosis

2017 ◽  
Vol 58 (8) ◽  
pp. 1324-1329 ◽  
Author(s):  
Hiroshi Ohira ◽  
Brian Mc Ardle ◽  
Robert A. deKemp ◽  
Pablo Nery ◽  
Daniel Juneau ◽  
...  
Keyword(s):  
Fdg Pet ◽  
Cardiac Sarcoidosis ◽  
Image Interpretation ◽  
Ct Image ◽  
Intraobserver Agreement ◽  
Pet Ct ◽  
Fdg Pet Ct

Observation of biological macromolecules using various electron microscopic methods

1978 ◽  
Vol 36 (2) ◽  
pp. 170-171
Author(s):  
Mitsuo Ohtsuki ◽  
Michael Sogard
Keyword(s):  
Electron Microscope ◽  
Phase Contrast ◽  
Image Interpretation ◽  
Density Lipoprotein ◽  
Biological Macromolecules ◽  
Contrast Effects ◽  
Biological Structure ◽  
Electron Microscopic ◽  
Structural Investigations ◽  
Staining Techniques

Structural investigations of biological macromolecules commonly employ CTEM with negative staining techniques. Difficulties in valid image interpretation arise, however, due to problems such as variability in thickness and degree of penetration of the staining agent, noise from the supporting film, and artifacts from defocus phase contrast effects. In order to determine the effects of these variables on biological structure, as seen by the electron microscope, negative stained macromolecules of high density lipoprotein-3 (HDL3) from human serum were analyzed with both CTEM and STEM, and results were then compared with CTEM micrographs of freeze-etched HDL3. In addition, we altered the structure of this molecule by digesting away its phospholipid component with phospholipase A2 and look for consistent changes in structure.

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