Wjokongko , Sigit (2001) Pengaruh Gerakan Grid terhadap kualitas Radiograf. Undergraduate thesis, FMIPA UNDIP.
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Abstract
Telah dilakukan penelitian pengaruh gerakan grid terhadap kualitas radiograf. Penelitian ini dilakukan dengan menggunakan grid bergerak jenis reciprocating dengan rasio 8:1 yang diletakkan di antara objek dan film. Penelitian dilakukan dengan menyinari obyek berupa step wedge yang diletakkan di dalam kotak air. Selanjutnya dilakukan pengukuran densitas dengan menggunakan densitometer kemudian dilakukan penghitungan kontras. Tahap kedua penghitungan kecepatan gerakan grid yaitu dengan mengamati dan mengukur jarak gerakan grid. Hasil penelitian menunjukkan bahwa semakin lama waktu penyinaran berarti semakin lambat gerakan grid, densitas dan kontras yang dihasilkan akan naik. Kontras optimal didapatkan pada saat digunakan waktu eksposi 0.3 detik dengan kecepatan 16.6 em/detik. Some research about the influence of grid movement to radiography quality has been done. It's done by using moving grid ( reciprocating type, with ratio of 8:1) that is put between object and film.. The research by exposure of object such as step wedge that is placed in the water box has done, and than measurement density by densitometer, and doing calculating contras radiograph. The second step, speed of grid measurement by show and measure distance of grid movement. The research shows that the larger exposure time mean the more slow grid movement, so that the density and contras will increase, and the optimal contrast produced will 0,3 second of using time and 16.6 crn/second using the speed
Item Type: | Thesis (Undergraduate) |
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Subjects: | Q Science > QC Physics |
Divisions: | Faculty of Science and Mathematics > Department of Physics |
ID Code: | 30552 |
Deposited By: | Mr UPT Perpus 1 |
Deposited On: | 02 Nov 2011 12:32 |
Last Modified: | 02 Nov 2011 13:56 |
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