Performance Evaluation for CT-AEC (CT Automatic Exposure Control) Systems

2007 ◽  
Vol 63 (5) ◽  
pp. 534-545 ◽  
Author(s):  
Yoshihisa Muramatsu ◽  
Shu Ikeda ◽  
Kazuaki Osawa ◽  
Ryo Sekine ◽  
Nobuyuki Niwa ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Control Systems ◽  
Exposure Control ◽  
Automatic Exposure Control

Performance evaluation of CT-automatic exposure control devices

2007 ◽  
Author(s):  
Daniel Gutierrez ◽  
Sabine Schmidt ◽  
Alban Denys ◽  
Pierre Schnyder ◽  
François O. Bochud ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Exposure Control ◽  
Automatic Exposure Control ◽  
Control Devices

WE-D-18A-02: Performance Evaluation of Automatic Exposure Control (AEC) Across 12 Clinical CT Systems

2014 ◽  
Vol 41 (6Part29) ◽  
pp. 498-498 ◽  
Author(s):  
J Winslow ◽  
J Wilson ◽  
O Christianson ◽  
E Samei
Keyword(s):  
Performance Evaluation ◽  
Exposure Control ◽  
Automatic Exposure Control

Clinically Acceptable Tolerance of Roentgen Generator Exposure Parameters

1987 ◽  
Vol 28 (1) ◽  
pp. 121-127 ◽  
Author(s):  
H. Forsberg
Keyword(s):  
Control Systems ◽  
Preventive Maintenance ◽  
Body Parts ◽  
Exposure Control ◽  
Automatic Exposure Control ◽  
Tube Voltage ◽  
Current Time ◽  
Modern Equipment ◽  
Exposure Data

The clinical demands for accuracy of roentgen generator scales were investigated in order to define suitable levels of tolerance to be required during calibration procedures and preventive maintenance on modern equipment. Radiographs of various film densities were made of four body parts. As test observers 59 radiologists and 53 radiologic technicians were asked to judge which radiographs they considered acceptable or not acceptable. Ninety-five per cent of the radiographs were accepted with the ***under- or overexposure of one mAs step. The spread of the estimations of suitable exposure data made by 38 radiologic technicians was also investigated. From these data the clinically acceptable tolerance of roentgen generator exposure parameters could be derived. It is suggested that the tolerance of tube voltage (kV) should be less than ±5 per cent, current-time product (mAs) −20 to +25 per cent and automatic exposure control systems (AEC) −20 to +25 per cent.

scholarly journals A routine quality assurance test for CT automatic exposure control systems

2016 ◽  
Vol 17 (4) ◽  
pp. 291-306 ◽  
Author(s):  
Gareth R. Iball ◽  
Alexis C. Moore ◽  
Elizabeth J. Crawford
Keyword(s):  
Quality Assurance ◽  
Control Systems ◽  
Exposure Control ◽  
Automatic Exposure Control

scholarly journals Dose Optimization by Using Automatic Exposure Control Systems in Mammography

2011 ◽  
Vol 46 (2) ◽  
pp. 148-157 ◽  
Author(s):  
Tomoko OTSUKA ◽  
Keisuke TANAKA ◽  
Ryosuke HIBI ◽  
Yuta MATSUNAGA ◽  
Shoichi SUZUKI
Keyword(s):  
Control Systems ◽  
Dose Optimization ◽  
Exposure Control ◽  
Automatic Exposure Control

scholarly journals Automatic Exposure Control Systems Designed to Maintain Constant Image Noise

2015 ◽  
pp. 1 ◽  
Author(s):  
Christopher P. Favazza ◽  
Lifeng Yu ◽  
Shuai Leng ◽  
James M. Kofler ◽  
Cynthia H. McCollough
Keyword(s):  
Control Systems ◽  
Image Noise ◽  
Exposure Control ◽  
Automatic Exposure Control

Efficient use of automatic exposure control systems in computed tomography requires correct patient positioning

2009 ◽  
Vol 50 (9) ◽  
pp. 1035-1041 ◽  
Author(s):  
J. Gudjonsdottir ◽  
J. R. Svensson ◽  
S. Campling ◽  
P. C. Brennan ◽  
B. Jonsdottir
Keyword(s):  
Computed Tomography ◽  
Control Systems ◽  
Patient Positioning ◽  
Exposure Control ◽  
Automatic Exposure Control
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