Automatic validation of the gantry tilt in a computed tomography scanner using a head polymethyl methacrylate phantom

Noviliawati, Rakhma; Anam, Khoirul; Sutanto, Heri; Dougherty, Geoff; Mak’ruf, Muhammad Ridha

doi:10.2478/pjmpe-2021-0008

Cited by 3 publications

(1 citation statement)

References 18 publications

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“…This software is very simple in application and easy to understand for new users. This software has been used in various research, such as research on automatic validation of gantry tilt (Noviliawati et al, 2021), research on automation of CT Number linearity measurements on ACR phantoms (Anam et al, 2023), research on evaluating automatic measurement of slice profile sensitivity (Widyanti et al, 2023), and research on the comparison of NPS and MTF in iterative reconstruction and deep learning reconstruction (Setiawan et al, 2023). The first step in the IndoQCT software is to upload images from each research protocol.…”

Section: B) Sn100 C) Sn110 D) Sn120 and E) Sn140mentioning

confidence: 99%

Analysis of Variation of Tin Filter on Noise Values in CT Scan Mastoid Protocol Using CT Scan Single Source: Phantom Study

Suzana,

Adi,

Darmini

2023

ijsh

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Since its introduction in 1972, CT Scan technology has developed rapidly from year to year, especially in reducing radiation dose; various technologies have been developed, including dual-energy or dual source technology with a technique of only a quarter of the gantry rotation. The aim of this research is to find out and analyze tin filter variations on noise in the mastoid CT scan protocol using a single source CT scan: phantom study. The method used in this research is Pre-Experimental with Posttest-Only Control Design. The noise value research results showed a difference in noise and SNR values with a p-value (p<0.05), and there was a reduction in radiation dose of 41.95% compared to the standard protocol. NPS values are at a frequency of 0.28, except for the Sn100 protocol. Subjective Analysis by two radiologists with a kappa value of 0.75 indicated that there was a moderate level of agreement. The Tin Filter Sn100 protocol can reduce the radiation dose, and the resulting image quality is good enough for diagnostic purposes, so the Tin Filter Sn100 protocol can be used as a Standard Operational Procedure for Mastoid CT Scan examination at Hermina Depok Hospital. This study has implications that may contribute to refining mastoid CT scanning protocols, leading to improved image quality, reduced radiation exposure, and improved diagnostic capabilities in clinical practice.

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Section: B) Sn100 C) Sn110 D) Sn120 and E) Sn140mentioning

confidence: 99%

Analysis of Variation of Tin Filter on Noise Values in CT Scan Mastoid Protocol Using CT Scan Single Source: Phantom Study

Suzana,

Adi,

Darmini

2023

ijsh

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Automatic measurement of CT number in the ACR CT phantom and its implementation to investigate the impact of tube voltage on the measured CT number

Anam,

Amilia,

Naufal

et al. 2024

Radiation Physics and Chemistry

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An Approach for Automation of CT Number Linearity Measurement on the TOS Phantom Image

Mira Anjani,

Choirul Anam*,

Heri Sutanto

et al. 2024

IJSRST

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Assessment of the computed tomography (CT) number linearity is an important part in the Quality Control (QC) procedures of CT images. An automated method is needed for simplify the measurement process of this parameter. This study aims to develop an automated method for measuring CT number linearity on the TOS phantom images scanned with Toshiba Aquilion Lightning CT scanner with variations of tube current, tube voltage, and slice thickness. The automation began with segmenting the phantom object with a threshold of - 200 Hounsfield units (HU). Then, the centroid was determined for the phantom mask. The air object inside the phantom and its centroid were segmented utilizing a threshold of - 900 HU. By performing a simple rotation operation between the two obtained centroids (i.e., phantom and air centroids), the central coordinates of Delrin, acrylic, nylon, and polypropylene materials were determined. CT number linearity and its coefficient of determination (R2) were calculated. The proposed method was evaluated with datasets scanned from variations of tube current, tube voltage, and slice thickness. The automated CT number linearity measurements were successfully developed. The CT number linearity showed acceptable results for all variations (R2>0.99). Moreover, no significant changes in CT numbers of all materials compared to the standard values were noticed.

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Automatic validation of the gantry tilt in a computed tomography scanner using a head polymethyl methacrylate phantom

Cited by 3 publications

References 18 publications

Analysis of Variation of Tin Filter on Noise Values in CT Scan Mastoid Protocol Using CT Scan Single Source: Phantom Study

Analysis of Variation of Tin Filter on Noise Values in CT Scan Mastoid Protocol Using CT Scan Single Source: Phantom Study

Automatic measurement of CT number in the ACR CT phantom and its implementation to investigate the impact of tube voltage on the measured CT number

An Approach for Automation of CT Number Linearity Measurement on the TOS Phantom Image

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