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Nodule detection in...
Nodule detection in digital chest radiography: effect of anatomical noise.
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- Båth, Magnus, 1974 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiofysik,Institute of Selected Clinical Sciences, Department of Radiation Physics
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- Håkansson, Markus (author)
- Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiofysik,Institute of Selected Clinical Sciences, Department of Radiation Physics
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- Börjesson, Sara (author)
- Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiofysik,Institute of Selected Clinical Sciences, Department of Radiation Physics
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Hoeschen, Christoph (author)
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Tischenko, Oleg (author)
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- Kheddache, Susanne, 1949 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiologi,Institute of Selected Clinical Sciences, Department of Radiology
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- Vikgren, Jenny, 1957 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiologi,Institute of Selected Clinical Sciences, Department of Radiology
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- Månsson, Lars Gunnar, 1951 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för särskilda specialiteter, Avdelningen för radiofysik,Institute of Selected Clinical Sciences, Department of Radiation Physics
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(creator_code:org_t)
- 2005-05-17
- 2005
- English.
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In: Radiation protection dosimetry. - : Oxford University Press (OUP). - 0144-8420 .- 1742-3406. ; 114:1-3, s. 109-13
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Abstract
Subject headings
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- The image background resulting from imaged anatomy can be divided into those components that are meaningful to the observers, in the sense that they are recognised as separate structures, and those that are not. These latter components (reffered to as anatomical noise) can be removed using a method developed within the RADIUS group. The aim of the present study was to investigate whether the removal of the anatomical noise results in images where lung nodules with lower contrast can be detected. A receiver operating characteristic (ROC) study was therefore conducted using two types of images: clinical chest images and chest images in which the anatomical noise had been removed. Simulated designer nodules with a full-width-at-fifth-maximum of 10 mm but with varying contrast were added to the images. The contrast needed to obtain an area under the ROC curve of 0.80, C0.8, was used as a measure of detectability (a low value of C0.8 represents a high detectability). Five regions of the chest X ray were investigated and it was found that in all regions the removal of anatomical noise led to images with lower C0.8 than the original images. On average, C0.8 was 20% higher in the original images, ranging from 7% (the lateral pulmonary regions) to 41% (the upper mediastinal regions).
Subject headings
- MEDICIN OCH HÄLSOVETENSKAP -- Klinisk medicin -- Radiologi och bildbehandling (hsv//swe)
- MEDICAL AND HEALTH SCIENCES -- Clinical Medicine -- Radiology, Nuclear Medicine and Medical Imaging (hsv//eng)
Keyword
- Artifacts
- Humans
- Image Processing
- Computer-Assisted
- Lung
- pathology
- radiography
- Lung Neoplasms
- diagnosis
- radiography
- Models
- Anatomic
- Monte Carlo Method
- Observer Variation
- ROC Curve
- Radiographic Image Enhancement
- methods
- Radiographic Image Interpretation
- Computer-Assisted
- methods
- Radiography
- methods
- Radiography
- Thoracic
- methods
- Scattering
- Radiation
- Software
- X-Rays
Publication and Content Type
- ref (subject category)
- art (subject category)
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Båth, Magnus, 19 ...
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Håkansson, Marku ...
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Börjesson, Sara
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Hoeschen, Christ ...
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Tischenko, Oleg
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Kheddache, Susan ...
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Vikgren, Jenny, ...
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Månsson, Lars Gu ...
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- About the subject
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- MEDICAL AND HEALTH SCIENCES
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MEDICAL AND HEAL ...
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and Clinical Medicin ...
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and Radiology Nuclea ...
- Articles in the publication
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Radiation protec ...
- By the university
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University of Gothenburg