書誌事項
- タイトル別名
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- THE EFFECT OF THE POSITION OF A FOCUS AND THE GRADIENT OF AN OBJECT TO A RADIOGRAPH OF THE APEX OF A LUNG
- キョウブ Xセン サツエイ ニ オケル ショウテン イチ オヨビ ヒシャタイ カクド ノ ハイセンゾウ ニ アタエル エイキョウ ニ ツイテ
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説明
The relations of the position of a focus, the distance between a focus and a film, and the gradient of an object to the image of the apex of a lung were studied. First of all, the standard size of chest was set by the authors and on the basis of it, the distance between a clavicle and the apex of a lung and the size of the back involved in that space were calculated and examined. In order to get an ideal image of the apex of a lung extending from the 4th rib to the 5th rib, the better gradient of an object at every chest thickness were deduced from the standard size of chest. Moreover, the above mentioned study was proved to be sufficient clinically ; on the basis of the culculated gradient of an object, the direct radiographes and indirect ones of every 100 patients were taken and the image of the apex of an lung were mostly ideal ones. The following conclusion were obtained from these studies. 1) If the position of the focus is lowered in order to get a wide field of the apex af an lung, it will not lead to practical results : on the contrary, the gradient of a object has more effects, especially in distant radiography. 2) In order to get an ideal image of the apex of an lung, the following conditions are needed. [numerical formula] The position of the focus……at the 6th thoracic vertebrae.
収録刊行物
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- 日本放射線技術学会雑誌
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日本放射線技術学会雑誌 19 (4), 256-264, 1964
公益社団法人 日本放射線技術学会
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詳細情報 詳細情報について
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- CRID
- 1390282681342725376
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- NII論文ID
- 110003452821
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- NII書誌ID
- AN00197784
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- ISSN
- 18814883
- 03694305
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- NDL書誌ID
- 9174773
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可