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

• Autorzy: Noviliawati Rakhma , Anam Choirul , Sutanto Heri , Dougherty Geoff , Mak’ruf Muhammad Ridha

Identyfikatory

DOI

10.2478/pjmpe-2021-0008

• Języki publikacji: EN

Abstrakty

EN

The purpose of this study was to develop an automatic method for validating the computed tomography gantry tilt. A head polymethyl methacrylate phantom with a diameter of 16 cm was used. Gantry tilt angles were measured both manually and automatically. Manual measurements were performed by measuring the length of the anteroposterior and lateral diameters from acquired images using electronic calipers. Automatic measurements consisted of a number of steps: phantom segmentation, determination of the center of the phantom, measurement of the anteroposterior and lateral diameters, and computation of the gantry tilt angle. The method was implemented on the gantry angles from 0° to 15°. The proposed method of measuring gantry angles produced accurate gantry tilt angles. The differences with the angles displayed on the gantry were less than 1°. The results of the automatic method were the same as those of the manual method (R2 > 0.98).

Słowa kluczowe

EN

computed tomography; gantry tilt; polymethyl methacrylate phantom; automated method; quality control

• Wydawca: Polskie Towarzystwo Fizyki Medycznej ; De Gruyter
• Czasopismo: Polish Journal of Medical Physics and Engineering
• Rocznik: 2021
• Tom: Vol. 27, Iss. 1
• Strony: 57--62
• Opis fizyczny: Bibliogr. 23 poz., rys., tab.

Twórcy

autor

Noviliawati Rakhma

• Department of Physics, Faculty of Sciences and Mathematics, Diponegoro University, Jl.Prof. Soedarto SH, Tembalang, Semarang 50275, Central Java, Indonesia

autor

Anam Choirul

• Department of Physics, Faculty of Sciences and Mathematics, Diponegoro University, Jl.Prof. Soedarto SH, Tembalang, Semarang 50275, Central Java, Indonesia

autor

Sutanto Heri

• Department of Physics, Faculty of Sciences and Mathematics, Diponegoro University, Jl.Prof. Soedarto SH, Tembalang, Semarang 50275, Central Java, Indonesia

autor

Dougherty Geoff

• Department of Applied Physics and Medical Imaging, California State University Channel Islands, Camarillo, CA 93012, USA

autor

Mak’ruf Muhammad Ridha

• Department of Electromedical Engineering, Poltekkes Kemenkes, Surabaya, East Java, Indonesia

Bibliografia

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Uwagi

Opracowanie rekordu ze środków MNiSW, umowa Nr 461252 w ramach programu "Społeczna odpowiedzialność nauki" - moduł: Popularyzacja nauki i promocja sportu (2021).