Zobrazeno 1 - 10
of 21
pro vyhledávání: '"Ariij Naufal"'
Autor:
Choirul Anam, Riska Amilia, Ariij Naufal, Heri Sutanto, Yanurita Dwihapsari, Toshioh Fujibuchi, Geoff Dougherty
Publikováno v:
Journal of Biomedical Physics and Engineering, Vol 13, Iss 4, Pp 353-362 (2023)
Background: Methods for segmentation, i.e., Full-segmentation (FS) and Segmentation-rotation (SR), are proposed for maintaining Computed Tomography (CT) number linearity. However, their effectiveness has not yet been tested against noise.Objective: T
Externí odkaz:
https://doaj.org/article/7c2444a89c6d4746aeebd301568c5c7f
Autor:
Choirul Anam, Pandji Triadyaksa, Ariij Naufal, Zaenal Arifin, Zaenul Muhlisin, Evi Setiawati, Wahyu Setia Budi
Publikováno v:
Journal of Biomedical Physics and Engineering, Vol 12, Iss 4, Pp 359-368 (2022)
Background: The effect of region of interest (ROI) size variation on producing accurate noise levels is not yet studied. Objective: This study aimed to evaluate the influence of ROI sizes on the accuracy of noise measurement in computed tomography (C
Externí odkaz:
https://doaj.org/article/76974e0c55f04c57bd61c4151af921cf
Publikováno v:
Algorithms, Vol 15, Iss 10, p 374 (2022)
A bilateral filter is a non-linear denoising algorithm that can reduce noise while preserving the edges. This study explores the characteristics of a bilateral filter in changing the noise and texture within computed tomography (CT) images in an iter
Externí odkaz:
https://doaj.org/article/2ed7483203584bcfa9ce7e07d2ded3d6
Publikováno v:
International Journal of Scientific Research in Science and Technology. :256-262
This study is to develop an automated method to determine the spatial resolution of computed tomography (CT) images on line-pair objects of the American College of Radiology (ACR) CT accreditation phantom. The ACR phantom was scanned using a GE Healt
Publikováno v:
International Journal of Scientific Research in Science and Technology. :274-280
This study assesses the impact of using an Adaptive Mean Filter (AMF) as a preprocessing stage for classification of breast tumor histopathological images at various magnifications. The histopathological image was converted from red-green-blue (RGB)
Publikováno v:
International Journal of Scientific Research in Science and Technology. :566-573
Purpose: To compare the methods of automated noise measurement at the polyester resin (PESR) phantom images and clinical abdominal images. Method: The PESR phantom was scanned with a Siemens SOMATOM Emotion 6 CT scanner for various tube voltages, i.e
Autor:
Choirul Anam, Riska Amilia, Ariij Naufal, Kusworo Adi, Heri Sutanto, Wahyu S. Budi, Zaenal Arifin, Geoff Dougherty
Publikováno v:
Polish Journal of Medical Physics and Engineering. 28:207-214
Purpose: This study aims to develop a software tool for investigating patient centering profiles of axial CT images and to implement it to evaluate practices in three hospitals in Indonesia. Methods: The evaluation of patient centering accuracy was c
Autor:
null Dewi A. Insiano, null Choirul Anam, null Eko Hidayanto, null Ariij Naufal, null Anisa T. Maya
Publikováno v:
International Journal of Scientific Research in Science and Technology. :437-444
This study aims to find the optimum threshold for the automatic measurement of slice thickness using ACR CT accreditation phantom. The ACR CT accreditation phantom was scanned using Siemens Somatom Perspective CT scanner. The nominal slice thicknesse
Autor:
Angelita D Ximenes, Choirul Anam, Eko Hidayanto, Ariij Naufal, Dito A Rukmana, Geoff Dougherty
Publikováno v:
Polish Journal of Medical Physics and Engineering. 28:133-138
Purpose: The current study proposes a method for automatically measuring slice thickness using a non-rotational method on the middle stair object of the AAPM CT performance phantom image. Method: The AAPM CT performance phantom was scanned by a GE He
Autor:
Choirul Anam, Ariij Naufal, Heri Sutanto, Zaenal Arifin, Eko Hidayanto, Li Kuo Tan, Jeannie Hsiu Ding Wong, K Ng, Sharizan Shahrudin, Azleen M. Zain, Faizah Ahmad, Geoff Dougherty
Publikováno v:
Biomedical Physics & Engineering Express.
Objective: To develop an algorithm to measure slice thickness to run on three types of Catphan phantoms with the ability to adapt to any misalignment and rotation of the phantoms. Method: Images of Catphan 500, 504, and 604 phantoms were examined. In