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Volume 66 Number 2 >

Effects of scatter correction processing on image quality of portable thoracic radiography in calves

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Title: Effects of scatter correction processing on image quality of portable thoracic radiography in calves
Authors: Shimbo, Genya Browse this author
Tagawa, Michihito Browse this author
Matsumoto, Kotaro Browse this author
Tomihari, Mizuki Browse this author
Miyahara, Kazuro Browse this author
Keywords: calf
image quality
scatter correction processing
thoracic radiography
Issue Date: May-2018
Publisher: Faculty of Veterinary Medicine, Hokkaido University
Journal Title: Japanese Journal of Veterinary Research
Volume: 66
Issue: 2
Start Page: 105
End Page: 112
Abstract: Thoracic radiography provides diagnostic assistance in assessing the severity of lung lesions in bovine respiratory diseases. We investigated the effects of a novel scatter correction processing software on the image quality of portable thoracic radiography in calves: this scatter correction method was recently developed for mobile bedside chest radiography in humans. Thoracic radiographs of the caudodorsal region were obtained from 30 calves of various sizes. Scatter correction processing of a grid ratio of 3 : 1 or 8 : 1 was applied to each image. The delineation of caudal thoracic vertebral bodies, scapulae, proximal third of the ribs, pulmonary vessels, and the aortic arch, as well as overall image quality were graded by five veterinarians using 5-point scales. Three types of images (original and scatter-corrected with grid ratios of 3 : 1 and 8 : 1) were compared using visual grading characteristics analysis. Scatter correction with a grid ratio of 3 : 1 improved the overall image quality, at least for calves with a body thickness of ≤40 cm, and improved the delineation of some anatomical structures for larger calves. Scatter correction with a grid ratio of 8 : 1 did not improve the delineation of any anatomical structures examined for calves >40 cm in thickness or the overall image quality for calves >30 cm in thickness. The present findings support the efficacy of scatter correction processing with a grid ratio of 3 : 1 for portable thoracic radiography in calves.
Type: bulletin (article)
Appears in Collections:Japanese Journal of Veterinary Research > Volume 66 Number 2

Submitter: 獣医学部図書室

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