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All Journal International Journal of Public Health Science (IJPHS) International Journal of Advances in Applied Sciences
Naufal, Ariij
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Earth & Planetary Sciences Environmental Science Health Professions Materials Science & Nanotechnology Mathematics Physics

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A system to investigate and adjust profile pattern of computed tomography dose index along the longitudinal-axis Anam, Choirul; Amilia, Riska; Naufal, Ariij; Dwihapsari, Yanurita; Dougherty, Geoff
International Journal of Public Health Science (IJPHS) Vol 12, No 4: December 2023
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijphs.v12i4.23291

Abstract

The purpose of this study to develop software to extract and investigate the rofiles of the tube current and volume computed tomography dose index (CTDIvol) along the longitudinal axis (z-axis). The tube current and CTDIvol were extracted from the Digital Imaging and Communications in Medicine (DICOM) header of every image along the longitudinal axis. We evaluated the profiles of the tube current and CTDIvol from eight computed tomography (CT) scanners. If the CTDIvol did not fluctuate along the fluctuation of the tube currents, then the system will adjust the CTDIvol with tube currents. It is found that TCM is not always activated. If TCM is activated, the profiles of TCM vary from one scanner to another. The Siemens and Philip scanners have adjusted the CTDIvol profile with tube current, but the Toshiba scanner has not. By developed software, CTDIvol profile of the Toshiba can be easily adjusted. In conclusion, software to investigate the profile pattern of CTDIvol along the longitudinal axis has been successfully developed. The software is easy to use and works quickly. From this study, medical staff must be careful when using the CTDIvol along longitudinal axis contained in each DICOM header.
Software development to anonymize patient information from clinical computed tomography images Anam, Choirul; Naufal, Ariij; Saragih, Jhon Hadearon; Ali, Mohd Hanafi
International Journal of Public Health Science (IJPHS) Vol 13, No 1: March 2024
Publisher : Intelektual Pustaka Media Utama

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijphs.v13i1.23032

Abstract

A free software for digital imaging and communications in medicine (DICOM) image anonymization is needed to protect patient information from third parties. This study aimed to develop a software for the anonymization of patient information in computed tomography (CT) image. There was a total of 17 informations to be anonymized, such as Patient’s Name, Other Patient Names, Patient’s ID, Patient’s Birth Date, Patient’s Sex, Patient’s Age, Study ID, Study Description, Series Description, Institution Name, Institution Adress, Referring Phisician’s Name, Consulting Physician’s Name, Performing Physician’s Name, Name of Physician(s) Reading Study, Operator’s Name, and Protocol Name. In every information, its initial value was replaced with a dummy value with the string value of "N/A". For testing, patient CT images from four different hospitals with different scanners were collected. It is found that each scanner had different information stored in DICOM information. However, the anonymization process in the four hospitals works well with accuracy of 100%. The developed software can anonymize DICOM images flexibly and successfully. This software can be used for anonymization of patient information in order to protect patient information.
Automatic slice thickness measurement on computed tomography images of American College of Radiology phantom Anam, Choirul; Insiano, Dewi A.; Hidayanto, Eko; Naufal, Ariij; Maya, Annisa Tenri; Mulatomo, Tunggul Drajat; Ali, Mohd Hanafi
International Journal of Advances in Applied Sciences Vol 13, No 2: June 2024
Publisher : Institute of Advanced Engineering and Science

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.11591/ijaas.v13.i2.pp371-379

Abstract

This study aims to develop an automatic method for calculating slice thickness on an American College of Radiology (ACR) phantom and evaluate its accuracy at variations of orientation angle and slice thickness. The phantom was scanned using Siemens SOMATOM perspective, with variations of the slice thickness (i.e. 1.5, 3, 5, 6, 7, and 10 mm) and rotation angles (i.e. 0.0, 22.5, 45.0, and 67.5°). The phantom rotation was based on the bone object as a reference. After determining the rotation angle, the phantom image was rotated by the angle. Next, profiles of pixel values across the wire objects for measuring slice thickness were developed from rotated phantom images. The slice thickness was measured automatically from the obtained profiles. The results of the automated method are 2.5, 4.1, 5.4, 5.8, 7.8, and 9.8 mm for all varied slice thicknesses. The differences between the automatic and manual methods are within 0.3 mm. The automatic method is capable of detecting slice thickness for various angles. The differences in slice thickness for various angles are within 0.1 mm for a slice thickness of 3 mm. These results are similar when compared to manual measurements. An algorithm for automated slice thickness measurement on ACR phantom has been successfully developed.
Co-Authors Ali, Mohd Hanafi Amilia, Riska Choirul Anam AM Diponegoro Dougherty, Geoff Eko Hidayanto Insiano, Dewi A. Maya, Annisa Tenri Mulatomo, Tunggul Drajat Saragih, Jhon Hadearon Yanurita Dwihapsari, Yanurita