ANALYSIS OF DIFFERENCES IN RAYSAFE AND RADCAL X-RAY MULTIMETER READINGS ON GENERAL RADIOGRAPHY X-RAY MACHINE CONFORMITY TEST VALUES
QA and QC programs need to be carried out to manage the quality of X-ray machine, one of which is by carrying out conformity tests. The conformity test is carried out using a non-invasive measuring instrument in the form of an X-ray multimeter. The many types and specifications of multimeter X-ra...
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QA and QC programs need to be carried out to manage the quality of X-ray
machine, one of which is by carrying out conformity tests. The conformity test is
carried out using a non-invasive measuring instrument in the form of an X-ray
multimeter. The many types and specifications of multimeter X-ray detectors result
in differences in measurement readings even on the same X-ray machine in one time
span. This research was then carried out to determine the magnitude of the
differences in value readings on different X-ray multimeters and their influence on
the conformity test results, as well as examining the factors that influence the
differences in these readings. The research was carried out using two data
collection methods, the first was by carrying out conformity tests and detector
identification. The conformity test is carried out using Raysafe and Radcal X-ray
multimeters on general radiography X-ray machine which refers to the Metode Uji
Pesawat Sinar-X Radiografi Umum number KU/PD/DKKN/04/1. The test
parameters carried out on the generator and tube are voltage accuracy, exposure
time, linearity and reproducibility tests. Meanwhile, detector identification is
carried out by analyzing the detector image results from each X-ray multimeter
which is scanned 360° using a micro-CT scanner and a three-dimensional image is
obtained. Conformity test data is processed using Microsoft Excel software to
obtain error values, linearity, standard deviation, variance and test results. These
values are then compared between X-ray multimeters to obtain the magnitude of
the difference in readings. Meanwhile, for detector identification, the image series
is reconstructed to obtain a projection image for each slice. From this image,
analysis was then carried out using Fiji-ImageJ software to identify the volume
sensitivity and gray scale of each detector. Sensitivity volume identification is
carried out by contouring the detector sensitivity area on each image slice.
Likewise, to identify the grayscale, this is done by drawing a profile line
transversely from left to right or conversely on each image slice. Identification data
for both sensitivity volume and gray scale measurements were then reprocessed
using Microsoft Excel software to add up and obtain volume measurements, as well
as plot graphs and average values to obtain grayscale values in the sensitivity area.
Because the sensitivity area of the Radcal detector is not visible in the image, the sensitivity volume calculation is carried out using the tube volume formula with
information obtained from the equipment specifications. Based on the conformity
test data processing, there is a maximum difference in test value readings of 0.03
mGy with Raysafe detector linearity of 0.9984 and Radcal of 0.9985. The
conformity test value reading data shows below the tolerance limits for all
parameters tested, both for the values read on the Raysafe and Radcal X-ray
multimeters, and is declared to have passed the test. This shows that differences in
readings from two different X-ray multimeters do not affect the conformity test
results. Based on the analysis of image reconstruction results, there is a difference
in sensitivity volume with Raysafe volume of 129.98 ± 0.08 mm3 and Radcal of
675.71 mm3. The grayscale of the Raysafe detector is 49.19 ± 5.18, while the
Radcal detector is 18.75 ± 1.86. The difference in graylevel of the detector
sensitivity area shows the difference in the type of material used between the
Raysafe and Radcal detectors. This research then reached a conclusion where there
were differences in the readings of the conformity test values on different X-ray
multimeters, but these differences in readings did not affect the results of the
conformity test, and the factors that influenced the differences in readings included
the sensitivity volume and type of material used in each detector.
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format |
Theses |
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Silvia Putri Raharja Effendi, R |
spellingShingle |
Silvia Putri Raharja Effendi, R ANALYSIS OF DIFFERENCES IN RAYSAFE AND RADCAL X-RAY MULTIMETER READINGS ON GENERAL RADIOGRAPHY X-RAY MACHINE CONFORMITY TEST VALUES |
author_facet |
Silvia Putri Raharja Effendi, R |
author_sort |
Silvia Putri Raharja Effendi, R |
title |
ANALYSIS OF DIFFERENCES IN RAYSAFE AND RADCAL X-RAY MULTIMETER READINGS ON GENERAL RADIOGRAPHY X-RAY MACHINE CONFORMITY TEST VALUES |
title_short |
ANALYSIS OF DIFFERENCES IN RAYSAFE AND RADCAL X-RAY MULTIMETER READINGS ON GENERAL RADIOGRAPHY X-RAY MACHINE CONFORMITY TEST VALUES |
title_full |
ANALYSIS OF DIFFERENCES IN RAYSAFE AND RADCAL X-RAY MULTIMETER READINGS ON GENERAL RADIOGRAPHY X-RAY MACHINE CONFORMITY TEST VALUES |
title_fullStr |
ANALYSIS OF DIFFERENCES IN RAYSAFE AND RADCAL X-RAY MULTIMETER READINGS ON GENERAL RADIOGRAPHY X-RAY MACHINE CONFORMITY TEST VALUES |
title_full_unstemmed |
ANALYSIS OF DIFFERENCES IN RAYSAFE AND RADCAL X-RAY MULTIMETER READINGS ON GENERAL RADIOGRAPHY X-RAY MACHINE CONFORMITY TEST VALUES |
title_sort |
analysis of differences in raysafe and radcal x-ray multimeter readings on general radiography x-ray machine conformity test values |
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https://digilib.itb.ac.id/gdl/view/81125 |
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id-itb.:811252024-03-20T12:59:31ZANALYSIS OF DIFFERENCES IN RAYSAFE AND RADCAL X-RAY MULTIMETER READINGS ON GENERAL RADIOGRAPHY X-RAY MACHINE CONFORMITY TEST VALUES Silvia Putri Raharja Effendi, R Indonesia Theses Conformity Test, Detector, Diagnostic, Micro-CT Scan, Sensitivity, XRay Multimeter INSTITUT TEKNOLOGI BANDUNG https://digilib.itb.ac.id/gdl/view/81125 QA and QC programs need to be carried out to manage the quality of X-ray machine, one of which is by carrying out conformity tests. The conformity test is carried out using a non-invasive measuring instrument in the form of an X-ray multimeter. The many types and specifications of multimeter X-ray detectors result in differences in measurement readings even on the same X-ray machine in one time span. This research was then carried out to determine the magnitude of the differences in value readings on different X-ray multimeters and their influence on the conformity test results, as well as examining the factors that influence the differences in these readings. The research was carried out using two data collection methods, the first was by carrying out conformity tests and detector identification. The conformity test is carried out using Raysafe and Radcal X-ray multimeters on general radiography X-ray machine which refers to the Metode Uji Pesawat Sinar-X Radiografi Umum number KU/PD/DKKN/04/1. The test parameters carried out on the generator and tube are voltage accuracy, exposure time, linearity and reproducibility tests. Meanwhile, detector identification is carried out by analyzing the detector image results from each X-ray multimeter which is scanned 360° using a micro-CT scanner and a three-dimensional image is obtained. Conformity test data is processed using Microsoft Excel software to obtain error values, linearity, standard deviation, variance and test results. These values are then compared between X-ray multimeters to obtain the magnitude of the difference in readings. Meanwhile, for detector identification, the image series is reconstructed to obtain a projection image for each slice. From this image, analysis was then carried out using Fiji-ImageJ software to identify the volume sensitivity and gray scale of each detector. Sensitivity volume identification is carried out by contouring the detector sensitivity area on each image slice. Likewise, to identify the grayscale, this is done by drawing a profile line transversely from left to right or conversely on each image slice. Identification data for both sensitivity volume and gray scale measurements were then reprocessed using Microsoft Excel software to add up and obtain volume measurements, as well as plot graphs and average values to obtain grayscale values in the sensitivity area. Because the sensitivity area of the Radcal detector is not visible in the image, the sensitivity volume calculation is carried out using the tube volume formula with information obtained from the equipment specifications. Based on the conformity test data processing, there is a maximum difference in test value readings of 0.03 mGy with Raysafe detector linearity of 0.9984 and Radcal of 0.9985. The conformity test value reading data shows below the tolerance limits for all parameters tested, both for the values read on the Raysafe and Radcal X-ray multimeters, and is declared to have passed the test. This shows that differences in readings from two different X-ray multimeters do not affect the conformity test results. Based on the analysis of image reconstruction results, there is a difference in sensitivity volume with Raysafe volume of 129.98 ± 0.08 mm3 and Radcal of 675.71 mm3. The grayscale of the Raysafe detector is 49.19 ± 5.18, while the Radcal detector is 18.75 ± 1.86. The difference in graylevel of the detector sensitivity area shows the difference in the type of material used between the Raysafe and Radcal detectors. This research then reached a conclusion where there were differences in the readings of the conformity test values on different X-ray multimeters, but these differences in readings did not affect the results of the conformity test, and the factors that influenced the differences in readings included the sensitivity volume and type of material used in each detector. text |