使用头部聚甲基丙烯酸甲酯模体的计算机断层扫描仪中龙门倾斜的自动验证

IF 0.7 Q4 RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING

Polish Journal of Medical Physics and Engineering Pub Date : 2021-03-01 DOI:10.2478/pjmpe-2021-0008

Rakhma Noviliawati, C. Anam, H. Sutanto, G. Dougherty, M. Mak’ruf

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引用次数: 2

摘要

摘要:本研究的目的是开发一种自动验证计算机断层扫描龙门倾斜的方法。采用直径16 cm的头部聚甲基丙烯酸甲酯假体。采用手动和自动两种方式测量龙门倾斜角度。通过使用电子卡尺测量获得的图像的正前方和外侧直径的长度来进行手动测量。自动测量包括几个步骤:幻像分割，确定幻像中心，测量前后径和侧径，计算龙门倾斜角度。该方法在0°~ 15°的龙门角度范围内实现。提出的测量龙门架角度的方法可以得到精确的龙门架倾斜角。与龙门架上显示的角度差异小于1°。自动法与手工法结果一致(R2 > 0.98)。

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

Abstract 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).

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来源期刊

Polish Journal of Medical Physics and Engineering RADIOLOGY, NUCLEAR MEDICINE & MEDICAL IMAGING-

CiteScore

1.30

自引率

0.00%

发文量

期刊介绍： Polish Journal of Medical Physics and Engineering (PJMPE) (Online ISSN: 1898-0309; Print ISSN: 1425-4689) is an official publication of the Polish Society of Medical Physics. It is a peer-reviewed, open access scientific journal with no publication fees. The issues are published quarterly online. The Journal publishes original contribution in medical physics and biomedical engineering.