RADIATION DOSE AND IMAGE INFORMATION IN COMPUTED RADIOGRAPHY. A phantom study of angle measurements in the weight-bearing knee

2000 ◽  
Vol 41 (4) ◽  
pp. 310-316
Author(s):  
J. Sanfridsson ◽  
G. Holje ◽  
G. Svahn ◽  
L. Ryd ◽  
K. Jonsson
Keyword(s):  
Radiation Dose ◽  
Computed Radiography ◽  
Weight Bearing ◽  
Phantom Study ◽  
Image Information ◽  
Angle Measurements

Radiation dose and image information in computed radiography: A phantom study of angle measurements in the weight-bearing knee

2000 ◽  
Vol 41 (4) ◽  
pp. 310-316 ◽  
Author(s):  
J. Sanfridsson ◽  
G. Holje ◽  
G. Svahn ◽  
L. Ryd ◽  
K. Jonsson
Keyword(s):  
Radiation Dose ◽  
Computed Radiography ◽  
Weight Bearing ◽  
Phantom Study ◽  
Image Information ◽  
Angle Measurements

Computed Radiography for Characterisation of the Weight-Bearing Knee

1997 ◽  
Vol 38 (4) ◽  
pp. 514-519 ◽  
Author(s):  
Jan Sanfridsson ◽  
G. Svahn ◽  
K. Jonsson ◽  
L. Ryd
Keyword(s):  
Computed Radiography ◽  
Weight Bearing

scholarly journals Optimasi Faktor Eksposi pada Pemeriksaan Radiografi Thorax menggunakan Computed Radiography

2020 ◽  
Vol 6 (1) ◽  
pp. 52-56
Author(s):  
Sri Sugiarti ◽  
Surip Surip ◽  
Merrytiana Fadila
Keyword(s):  
Radiation Dose ◽  
Nuclear Power ◽  
Radiation Safety ◽  
Computed Radiography ◽  
Reference Level ◽  
Radiographic Examination ◽  
Exposure Level ◽  
Exposure Factor ◽  
Chest Examination ◽  
Correlational Method

Concerning radiation safety must meet several radiation protection requirements which include justification or utilization of nuclear power, dose limitation, optimization of protection, and radiation safety. The purpose of this study was to determine the optimization of the exposure factor selection and determine the radiation dose received by the patient based on the selection of exposure factors on the thorax examination. The author observed the use of exposure factors on chest radiographic examination with a sample of 60 people. The design of this study uses the correlational method. The independent variables in this study are age, body weight, object thickness, kV, and mAs. Dependent variable exposure to radiation dose on chest examination. The conclusion of this study is the dose exposure level is influenced by age, object thickness, weight, and use of exposure factors which will then be obtained by the DRL (Diagnostic Reference Level) value.

scholarly journals A comparison of erect weight-bearing and non-weight-bearing radiography of the cervical spine in non-trauma patients

2021 ◽  
Author(s):  
Bimali S. Weerakoon ◽  
Nimali N. Karunaratne ◽  
Winitha S. Jayasundara
Keyword(s):  
Imaging System ◽  
Computed Radiography ◽  
Cervical Vertebrae ◽  
Weight Bearing ◽  
Cervical Region ◽  
Trauma Patients ◽  
Imaging Procedure ◽  
Significant Difference ◽  
Vertebral Bodies ◽  
Fair Poor

Introduction: Various positioning techniques are utilized to enhance the visualization of lower cervical vertebrae on lateral radiographs. However, the effectiveness of these techniques still remains unclear. This study was conducted to determine the effect of the weight-bearing (WB) technique in visualizing lower cervical vertebrae and cervicothoracic junction (C7-T1) on standing lateral cervical radiographs of adult non-trauma patients. The study was conducted using both computed radiography (CR) and digital radiography (DR) systems.Methods: Forty-four CR (29 WB and 15 non-WB – NWB) and 61 DR (26 WB and 35 NWB) lateral C-spine radiographs were prospectively evaluated to assess the visible number of cervical vertebral bodies and C7-T1 junction. The instructions given by the radiographer to the patient for the imaging procedure were also assessed on the Likert scale (very good, good, fair, poor, very poor).Results: There was no significant difference (p > 0.05) in the visualization of the number of vertebral bodies between the two techniques of WB and NWB for CR or DR. Further, no significant relationship (p > 0.05) was observed between the WB technique and the visualization of C7-T1 junction in DR systems. However, a significant difference was identified for CR (p = 0.012). The instruction given to the patient significantly correlated with the visibility of the lower C-spine region within each group of WB and NWB in both imaging systems.Conclusions: The visibility of the number of vertebral bodies in the lower C-spine region in either CR or DR systems did not demonstrate any enhancement with the WB technique. Regardless of the imaging system or techniques used, adequate instructions given to the patient before and during the imaging procedure of C-spine lateral radiography demonstrated a significant improvement in visualizing the lower C-spine region. In this preliminary study, the application of erect WB radiography technique in evaluating the lower cervical region of adult non-trauma patients gives limited advantage.

scholarly journals Performance evaluation of iterative reconstruction algorithms for achieving CT radiation dose reduction — a phantom study

2016 ◽  
Vol 17 (2) ◽  
pp. 511-531 ◽  
Author(s):  
Cristina T. Dodge ◽  
Eric P. Tamm ◽  
Dianna D. Cody ◽  
Xinming Liu ◽  
Corey T. Jensen ◽  
...  
Keyword(s):  
Performance Evaluation ◽  
Radiation Dose ◽  
Dose Reduction ◽  
Iterative Reconstruction ◽  
Radiation Dose Reduction ◽  
Phantom Study ◽  
Reconstruction Algorithms ◽  
Ct Radiation

scholarly journals Impact of radiation dose and iterative reconstruction on pulmonary nodule measurements at chest CT: a phantom study

2015 ◽  
Vol 21 (6) ◽  
pp. 459-465 ◽  
Author(s):  
Hyungjin Kim ◽  
Chang Min Park ◽  
Hee-Dong Chae ◽  
Sang Min Lee ◽  
Jin Mo Goo
Keyword(s):  
Radiation Dose ◽  
Pulmonary Nodule ◽  
Iterative Reconstruction ◽  
Chest Ct ◽  
Phantom Study
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