HUSCAP logo Hokkaido Univ. logo

Hokkaido University Collection of Scholarly and Academic Papers >
獣医学研究科  >
Japanese Journal of Veterinary Research >
Volume 66 Number 1 >

Evaluation of grid performance for thoracic radiography in calves using a portable x-ray unit

Genya Shimbo.pdf827.38 kBPDF見る/開く

タイトル: Evaluation of grid performance for thoracic radiography in calves using a portable x-ray unit
著者: Shimbo, Genya 著作を一覧する
Tagawa, Michihito 著作を一覧する
Matsumoto, Kotaro 著作を一覧する
Tomihari, Mizuki 著作を一覧する
Miyahara, Kazuro 著作を一覧する
キーワード: calf
image quality
low ratio grid
portable radiography
発行日: 2018年 2月
誌名: Japanese Journal of Veterinary Research
巻: 66
号: 1
開始ページ: 13
終了ページ: 19
抄録: Thoracic radiography provides diagnostic assistance in assessing the severity of lung lesions in bovine respiratory diseases. We investigated the effects of grid use on overall image quality for portable thoracic radiography in calves. Thoracic radiographs of the dorsocaudal region were made for 30 calves of various sizes, using three acquisition techniques (digital radiography with no grid, with a 3 : 1 grid, and with an 8 : 1 grid). Overall image quality was graded independently by five veterinarians using a 5-point scale based on the visibility of the thoracic vertebral bodies, thoracic spinous processes, scapulae, proximal third of the ribs, caudal lobar pulmonary vessels, and aortic arch; and on the level of image noise. The results were evaluated using Visual Grading Characteristics analysis. The 3 : 1 grid significantly improved overall image quality, regardless of body size. The 8 : 1 grid improved image quality only for calves smaller than 30 cm in thickness. The results of this study support the value of a 3 : 1 grid for portable thoracic radiography in calves.
資料タイプ: bulletin (article)
出現コレクション:Volume 66 Number 1

提供者: 獣医学部図書室


本サイトに関するご意見・お問い合わせは repo at へお願いします。 - 北海道大学