A Utilization Plan for Automatic Validation of BIM-Based Design VE

2021 ◽  
Vol 26 (3) ◽  
pp. 262-272
Author(s):  
Miduk Kwon ◽  
Sohyun Park ◽  
Chanwon Jo
Keyword(s):  
Automatic Validation

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

2021 ◽  
Vol 27 (1) ◽  
pp. 57-62
Author(s):  
Rakhma Noviliawati ◽  
Choirul Anam ◽  
Heri Sutanto ◽  
Geoff Dougherty ◽  
Muhammad Ridha Mak’ruf
Keyword(s):  
Computed Tomography ◽  
Polymethyl Methacrylate ◽  
Tilt Angle ◽  
Automatic Method ◽  
Phantom Measurement ◽  
Manual Method ◽  
Method R ◽  
Computed Tomography Scanner ◽  
Automatic Validation

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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