SU911441A1 - Method of testing cassettes for x-ray film - Google Patents
Method of testing cassettes for x-ray film Download PDFInfo
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- SU911441A1 SU911441A1 SU802936598A SU2936598A SU911441A1 SU 911441 A1 SU911441 A1 SU 911441A1 SU 802936598 A SU802936598 A SU 802936598A SU 2936598 A SU2936598 A SU 2936598A SU 911441 A1 SU911441 A1 SU 911441A1
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- USSR - Soviet Union
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- film
- cassette
- ray
- screens
- grid
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Description
() СПОСОБ ПРОВЕРКИ КАССЕТ ДЛЯ РЕНТГЕНОВСКОЙ ПЛЕНКИ() METHOD OF TESTING THE CASSETTE FOR X-RAY FILM
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1 Изобретение относитс к медицинской рентгенотехнике.1 The invention relates to medical radiotechnology.
Характерными неисправност ми кассет дл рентгеновской пленки вл ютс Пропускание света и нерезкость изображени , св занна с недостаточным прижатием усилительных экранов к пленке.Typical faults in X-ray film cassettes are Light transmission and image blurring due to insufficient adhesion of the reinforcement screens to the film.
Известен способ контрол кассет дл рентгеновской пленки, заключающийс в получении рентгенограммы,размещенной на крышке кассеты сетки из рент-геноконтрастного материала fl.A known method of monitoring X-ray film cassettes consists in obtaining an X-ray image placed on the lid of the grid cassette from the x-ray contrast material fl.
Недостатком этого способа вл етс то, что он позвол ет оценить только плотность прилегани экранов к плен-. ке, в то врем как дл проверки качества кассет необходимо оценить их и на светопроницаемость.The disadvantage of this method is that it allows to estimate only the density of the adjoining screens to the film. ke, while to check the quality of the cassettes it is necessary to evaluate them for their light transmission.
Известен способ проверки прилегани пленки к экранам кассеты, заключающийс в том, что кассету зар жают рентгеновской пленкой, а затем производ т облучение пленки черезA known method for checking the adherence of a film to the cassette screens consists in that the cassette is charged with an X-ray film, and then the film is irradiated through
прозрачную сетку, из рентгеноконтipacTHoro материала, установленную на кассету со стороны прохождени рентгеновских лучей. При этом рассто ние фокуса трубки от пленки 100 см, а размер фокуса не более 2 х 2 мм. Проволочна сетка имеет квадраты со сто .ронами 5 WM при диаметре проволоки 0,5 мм. Напр жение на трубке Aj.KB, анодный ток трубки и выдержка подби10 раютс так, чтобы плотность почернени была 1,01 0,15- transparent mesh, made of X-ray glass material, mounted on a cassette on the side of the X-ray passage. In this case, the distance of the focus of the tube from the film is 100 cm, and the size of the focus is no more than 2 x 2 mm. The wire mesh has squares with hundred WM 5 WM with a wire diameter of 0.5 mm. The voltage across the tube Aj.KB, the anode current of the tube and the shutter speed are selected so that the density of the blackening is 1.01 0.15-
Результаты проверки считают положительными , если экспонированна пленка после фотохимической обработ15 ки имеет равномерное почернение и резкость изображени сетки на поверхности , равной 81 общей площади пленки в ее .центральной части Г2.The test results are considered positive if the exposed film after the photochemical treatment has a uniform blackening and sharpness of the image of the grid on the surface, equal to 81 of the total film area in its central part G2.
Известен также способ проверки There is also a known method of checking.
20 светонепроницаемости кассет i заключающийс в том, что кассету, зар женную рентгенографической пленкой ссоответствующими размерами, освещаютThe 20 opacity of the cassettes i, consisting in that the cassette, charged with an X-ray film with corresponding dimensions, illuminates
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802936598A SU911441A1 (en) | 1980-06-09 | 1980-06-09 | Method of testing cassettes for x-ray film |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU802936598A SU911441A1 (en) | 1980-06-09 | 1980-06-09 | Method of testing cassettes for x-ray film |
Publications (1)
Publication Number | Publication Date |
---|---|
SU911441A1 true SU911441A1 (en) | 1982-03-07 |
Family
ID=20900482
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU802936598A SU911441A1 (en) | 1980-06-09 | 1980-06-09 | Method of testing cassettes for x-ray film |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU911441A1 (en) |
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1980
- 1980-06-09 SU SU802936598A patent/SU911441A1/en active
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