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Digital Image Analysis Of Single Rectangular Slit Fraunhofer Diffraction Patterns Yuri Yogaswara; Fourier Dzar Eljabbar Latief
Indonesian Journal of Physics Vol 30 No 2 (2019): Vol 30 No 2 (2019)
Publisher : Institut Teknologi Bandung

Study of the single rectangular slit Fraunhofer diffraction pattern has been carried out through experiments. Data acquisition was done by manually measuring the distance of the bright and dark diffraction patterns using millimeter block paper and by means of digital images analysis of the diffraction patterns. The digital images were used to obtain the bright and dark intensity data of the pattern as the function of the distance from the center of the pattern. The process of obtaining the data was carried out as follows: image acquisition, image digitization, image quality enhancement, graphics plotting and chart normalization. The data processing is done analytically and computationally using ImageJ software. The results of the digital image analysis of diffraction patterns produce an intensity graph of the distance of the diffraction pattern (I-y chart). The results from the digital image analysis approach provide an alternative method that is more accurate in the process of calculating the physical magnitude of diffraction parameters such as the wavelength of the source. One of the advantages of this method is that intensity of the diffraction pattern can be visualized as a function of the distance from the center of the screen. Although accuracy of the calculation result is not very high, the magnitude of the intensity can be observed to decrease with increasing distance of the diffraction pattern to the center of the screen. The results of the calculation of the source wavelength by means of digital image analysis provides good results compared to the manual method using the millimeter block paper. The smallest mean error of the wavelength by means of digital image analysis is 1,72% and the manual method using the millimeter block paper is 3,84%. This method of measurement using digital image analysis can be used as an alternative for various position or distance-based measurement, such as the calculation of linear expansion coefficient with a single slit diffraction method.

Differences of Micro-CT evaluation of the obturation sealing capability between thermoplastic carrier-based condensing techniques and lateral heat condensation techniques Amida, Aya; Aripin, Dudi; Hayati, Ayu Trisna; Latief, Fourier Dzar Eljabbar; Djustiana, Nina; Cahyanto, Arief; Usri, Kosterman; Tjahajawati, Sri; Mariam, Marry Siti; Widyaputra, Sunardhi
Padjadjaran Journal of Dentistry Vol 34, No 2 (2022): July
Publisher : Universitas Padjadjaran

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.24198/pjd.vol34no2.41384

ABSTRACT Introduction: Root canal filling is an important part of root canal treatment that aimed to seal the root canal system, to prevent bacterial penetration and their toxins into periradicular tissues and to provide favourable environment for periapical healing. Thermoplasticized technique were developed to produce filling with homogenous mass, to achieve optimal sealing ability and to increase the quality of root canal filling. The aim of this study is to analyzed differences of Micro-Computed Tomography (Micro-CT) evaluation of the obturation sealing capability between thermoplastic carrier-based condensing techniques and lateral heat condensation techniques. Methods: This study was conducted under an in-vitro quasi experimental methode to 36 specimens of maxillaris centralis incisivus which were divided to 3 groups, (A) thermoplasticized carrier-based technique (GuttaCore System), (B) warm lateral condensation technique (heat carrier SystemB), (C) cold lateral condensation as control group. Sealing ability is evaluated based on the measurement results of volume percentages of filling material and sealer, volume of void, and surface density, that which was calculated from the 3D volumetric image of Micro-CT device. Data were statistically analysed using Analisis of Variance (ANOVA) and t-test. Result: The result showed significant difference of percentage filling material and sealer volume in apical third (p<0.05), whereas there were no significant differences of void volume in apical third, middle third, coronal third or along the canal (p>0.05). Conclusion: Thermoplastized carrier-based technique is not better than warm lateral technique.Keywords: sealing ability; root canal filling; thermoplasticized carrier-based technique; warm lateral technique.

ANALISIS MIKRO-CT SEBAGAI METODE PILIHAN TERHADAP PENELITIAN PERTUMBUHAN TULANG KRANIOFASIAL Parmasari, Wahyuni Dyah; Ardani, I Gusti Wahju; Narmada, Ida Bagus; Kuntaman, Kuntaman; Latief, Fourier Dzar Eljabbar; Bahraini, Fahrisah Nurfadeliah; Regita Cahyani, Nafansya
Prosiding Seminar Nasional COSMIC Kedokteran Vol 3 (2025): Edisi 2025
Publisher : Lembaga Penelitian Dan Pengabdian Kepada Masyarakat Universitas Wijaya Kusuma Surabaya

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Latar Belakang: Micro-CT adalah metode pencitraan 3D yang masih jarang ditemui di Indonesia. Analisis ini bermanfaat untuk penelitian untuk mengetahui titik anatomis yang sulit ditentukan secara manual, anomali dan malformasi dari cranium serta dapat mengetahui kepadatan tulang kraniofasial. Dalam pertumbuhan tulang dapat dideteksi secara kuantitatif yaitu pengukuran antropometri, maupun kualitiatif yaitu kualitas pertumbuhan tulang. Tujuan: mengukur dimensi transfersal dan sagital dengan analisis Mikro-CT sebagai parameter pertumbuhan tulang kraniofasial. Metode: Sampel menggunakan calvaria tikus betina dewasa dengan menganalisis daerah dasar calvaria yaitu basisphenoid dan concha nasalis. Analisis sampel dilakukan dan diukur dengan Aplikasi DataViewer versi 1.6.0.0 64-bit. CTVox versi-3.3.1 64-bit digunakan untuk menampilkan visual 3D. Mesin mikro-CT yang digunakan adalah Bruker SkyScan-1173 High Energy Micro-CT. Hasil: Menentukan titik landmark terlateral dari calvaria, kemudian dihubungkan menjadi garis ukur, untuk mendapatkan jarak yang dapat diukur sebelum dan sesudah perlakuan. Didapatkan MXHR yaitu 9.366 mm dan Interinsisifus (I) dengan titik paling atas cranium yaitu 17.914 mm. Pada concha nasalis, ditentukan titik paling superfisial dan caudal kemudian diukur untuk mengetahui tinggi concha nasalis dalam kurun waktu tertentu. Kesimpulan: Mikro-CT dapat menjadi metode pilihan untuk pengukuran tulang kraniofasial dari aspek anterior-posterior maupun sagital dan dapat menyelidiki kualitas dari tulang dengan satuan grey-scale value.

Biomarkers of Suture Density and Thickness in Craniofacial Bone Growth: Micro-CT Analysis Wahyuni Dyah Parmasari; I Gusti Aju Wahju Ardani; Ida Bagus Narmada; Alexander Patera Nugraha; Ramadhan Hardani Putra; Fourier Dzar Eljabbar Latief; Fahrisah Nurfadeliah Bahraini
Interdental Jurnal Kedokteran Gigi (IJKG) Vol. 21 No. 1 (2025): Interdental Jurnal Kedokteran Gigi (IJKG)
Publisher : Fakultas Kedokteran Gigi, Universitas Mahasaraswati Denpasar

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.46862/interdental.v21i1.10178

Introduction: One of the parameters for measuring craniofacial growth is suture closure. The sutures are connected with fibrous connective tissue that grows in a few days. The objective is to analyze the gray-scale value (GV) potential by measuring the volume of interest (VOI) of the different skulls using micro-computed tomography (Micro-CT). The analysis uses certain parameters, namely density and thickness. Material and Methods: This study involves experimental mice to examine normal growth and development processes at a certain age by investigating mice’s suture maturation. If the suture closure process has been completed, it can be used as a potential standard for measuring the cessation of growth in the craniofacial area. This study examined three different skulls obtained from 15-day-old (cranium 1) baby mice, 25-day-old (cranium 2) baby mice, and 120-day-old adult mice (cranium 3). The possible GV was 0 to 255 (Micro-CT-reconstructed image dataset in 8-bit-BMP-format). There was a volumetric space that limited the analysis area of the bone tissue whose density was measured. In micro-CT-reconstructed images, VOI was determined by the region-of-interest (ROI) in the 2D image slices, which completely formed an image. The machine used was a Bruker SkyScan 1173 high energy micro-CT. Results and Discussions: The suture of Cranium 1, Cranium 2, and Cranium 3 have a relative mean density (GV) of 32,45; 29,74; and 50,1, respectively. This study also measures the geometric average measurement of bone cranium thickness with a 5x5 mm cross-section. The average thickness of cranium 1 is 0.554 mm, cranium 2 is 0.645 mm, and cranium 3 is 1.417 mm. Conclusion: Sutures cranium 1 and 2 are lower in density and thinner than cranium 3 as documented by means of Micro-CT.

Anatomical Landmarks and Measurements of Craniofacial Structures: A Micro-CT Analysis Parmasari, Wahyuni Dyah; Ardani, I Gusti Aju Wahju; Narmada, Ida Bagus; Nugraha, Alexander Patera; Putra, Ramadhan Hardani; Latief, Fourier Dzar Eljabbar; Bahraini, Fahrisah Nurfadeliah
Odonto : Dental Journal Vol 12, No 1 (2025): April 2025
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.12.1.29-43

In this study, an adult rat's calvaria was used to examine craniofacial anatomical landmarks of maxilla and mandible using Micro-Computed Tomography (micro-CT) as the marker of craniofacial growth and development in rat. It is used to assist research, translating landmark points for diagnosis. Landmarks on the rat’s calvaria were determined to set the measurements of two specified points. One of the ways to validate craniofacial growth and development is to look at the differences between craniofacial before and after a specified period or treatment. With micro-CT analysis, the researchers are more precise in determining the difficult points in the cranium.The sample analysis was carried out and measured by DataViewer version 1.6.0.0 64-bit Application. CTVox version-3.3.1 64-bit is used to display 3D visuals. Reconstruction results after adjusting the data range were 30-255 (the color range 0-255). The machine used was Bruker SkyScan-1173 High Energy Micro-CT. Findings anatomical landmarks for the examples, the maxilla determined I for the point on premaxilla between jawbone and lingual surface of upper incisors. In the mandible, I’ for the most anterior edge of the alveolar bone on the convexity of the lower incisor. The unevenness of the cranium made manual measurements difficult and not possible. However, this micro-CT method makes the landmark point determination more detailed and dependable. This makes geometric measurements of craniofacial more reliable. Micro-CT analysis is a more dependable method to determine anatomical landmarks and measure craniofacial structures as the marker of craniofacial growth and development in rat.

Anatomical Landmarks and Measurements of Craniofacial Structures: A Micro-CT Analysis Parmasari, Wahyuni Dyah; Ardani, I Gusti Aju Wahju; Narmada, Ida Bagus; Nugraha, Alexander Patera; Putra, Ramadhan Hardani; Latief, Fourier Dzar Eljabbar; Bahraini, Fahrisah Nurfadeliah
Odonto : Dental Journal Vol 12, No 1 (2025): April 2025
Publisher : Faculty of Dentistry, Universitas Islam Sultan Agung

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30659/odj.12.1.29-43

In this study, an adult rat's calvaria was used to examine craniofacial anatomical landmarks of maxilla and mandible using Micro-Computed Tomography (micro-CT) as the marker of craniofacial growth and development in rat. It is used to assist research, translating landmark points for diagnosis. Landmarks on the rat’s calvaria were determined to set the measurements of two specified points. One of the ways to validate craniofacial growth and development is to look at the differences between craniofacial before and after a specified period or treatment. With micro-CT analysis, the researchers are more precise in determining the difficult points in the cranium.The sample analysis was carried out and measured by DataViewer version 1.6.0.0 64-bit Application. CTVox version-3.3.1 64-bit is used to display 3D visuals. Reconstruction results after adjusting the data range were 30-255 (the color range 0-255). The machine used was Bruker SkyScan-1173 High Energy Micro-CT. Findings anatomical landmarks for the examples, the maxilla determined I for the point on premaxilla between jawbone and lingual surface of upper incisors. In the mandible, I’ for the most anterior edge of the alveolar bone on the convexity of the lower incisor. The unevenness of the cranium made manual measurements difficult and not possible. However, this micro-CT method makes the landmark point determination more detailed and dependable. This makes geometric measurements of craniofacial more reliable. Micro-CT analysis is a more dependable method to determine anatomical landmarks and measure craniofacial structures as the marker of craniofacial growth and development in rat.

ANALISIS EKSPERIMEN PENENTUAN KONSTANTA PEGAS MENGGUNAKAN METODE STATIS, DINAMIS, APLIKASI PHYPOX DALAM PEMBELAJARAN FISIKA Widiastuti, Yanti; Latief, Fourier Dzar Eljabbar
Proceeding Seminar Nasional IPA 2022
Publisher : LPPM UNNES

Show Abstract | Download Original | Original Source | Check in Google Scholar

Menerapkan kolaborasi pembelajaran dengan menganalisis kesesuaian Kompetensi Dasar (KD), menjadi salah satu bentuk upaya untuk meringankan beban belajar peserta didik di Sekolah Menengah Atas terutama pada kegiatan eksperimen untuk menentukan kontanta pegas. Hal ini dapat menjadi salah satu bentuk strategi pembelajaran yang mengidentifikasi kesesuaian dan keterkaitan antar Kompetensi Dasar (KD) dalam pembelajaran fisika, agar terintegrasi dan bermakna bagi peserta didik. Penelitian ini bertujuan untuk membandingkan hasil penentuan kontanta pegas dengan menggunakan metode statis, metode dinamis berbasis lab, dan penggunaan aplikasi Phyphox melalui pengukuran tunggal maupun berulang dalam proses pembelajaran fisika di SMA. Berdasarkan eksperimen yang telah dilakukan, didapatkan nilai kontanta pegas dari metode statis k = (3,6160 ± 0,1012) × 101 N/m dan k = (3,609 ± 0,144) × 101 N/m, metode dinamis untuk simpangan 1 cm sebesar k = (2,7140 ± 0,1797) × 101 N/m dan k = (2,7390 ± 0,0445) × 101 N/m, metode dinamis untuk simpangan 2 cm sebesar k = (2,7140 ± 0,1797) × 101 N/m, dan k = (2,6814 ± 0,0434) × 101 N/m, dan menggunakan aplikasi Phyphox k = (2,604 ± 0,306) × 101 N/m. Dari hasil analisis tersebut peneliti merancang Lembar Kerja Peserta Didik (LKPD) disertai video pengantar eksperimen yang mendapatkan tanggapan baik dari peserta didik, karena memaparkan materi berupa gambar dan animasi yang menarik, serta panduan eksperimen yang mudah dipahami dan sesuai untuk dijadikan sebagai media pembelajaran fisika bagi peserta didik di SMA.

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