Optimum radiographic examination for consideration of compensation awards: I. General methodology and application to chest examination

1980 ◽  
Vol 135 (5) ◽  
pp. 1065-1069 ◽  
Author(s):  
RL Eisenberg ◽  
MW Hedgcock ◽  
EA Williams ◽  
BJ Lyden ◽  
Akin ◽  
...  
Keyword(s):  
Radiographic Examination ◽  
General Methodology ◽  
Chest Examination

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.

Estimating rotation angle from asymmetric projection of chest

2021 ◽  
pp. 1-9
Author(s):  
Zhonghang Wu ◽  
Pengfei Hou ◽  
Wei Li ◽  
Tianbao Zhu ◽  
Peipei Wang ◽  
...  
Keyword(s):  
Rotation Angle ◽  
Chest Radiographs ◽  
New Method ◽  
Radiographic Examination ◽  
Thoracic Cage ◽  
Technical Adequacy ◽  
Width Difference ◽  
Spinous Processes ◽  
Chest Examination ◽  
Two Sides

BACKGROUND: Manual or machine-based analysis of chest radiographs needs the images acquired with technical adequacy. Currently, the equidistance between the medial end of clavicles and the center of spinous processes serves as the only criterion to assess whether a frontal PA chest radiograph is taken with any rotation. However, this measurement is normally difficult to implement because there exists overlapping of anatomies within the region. Moreover, there is no way available to predict exact rotating angles even the distances were correctly measured from PA chest radiographs. OBJECTIVE: To quantitatively assess positioning adequacy of PA chest examination, this study proposes and investigates a new method to estimate rotation angles from asymmetric projection of thoracic cage on radiographs. METHOD: By looking into the process of radiographic projection, generalized expressions have been established to correlate rotating angles of thorax with projection difference of left and right sides of thoracic cage. A trunk phantom with different positioning angles is employed to acquire radiographs as standard reference to verify the theoretical expressions. RESULTS: The angles estimated from asymmetric projections of thoracic cage yield good agreement with those actual rotated angles, and an approximate linear relationship exists between rotation angle and asymmetric projection of thoracic cage. Under the experimental projection settings, every degree of rotation corresponds to the width difference of two sides of thoracic cage around 13–14 pixels. CONCLUSION: The proposed new method may be used to quantify rotating angles of chest and assess image quality for thoracic radiographic examination.

scholarly journals Standarisasi Indeks Eksposur untuk Memenuhi Kriteria Anatomi dan Aspek Teknis pada Radiografi Thorax Pediatrik

2021 ◽  
Vol 7 (1) ◽  
pp. 22-27
Author(s):  
Mukhammad Lutfan Nurrokhim ◽  
Dwi Rochmayanti ◽  
Ari Budiono
Keyword(s):  
Computed Radiography ◽  
Descriptive Analysis ◽  
Technical Aspect ◽  
Radiographic Examination ◽  
Exposure Index ◽  
Exposure Factor ◽  
Pediatric Chest ◽  
Chest Examination ◽  
Index Value ◽  
The Right

Background: Computed Radiography has an exposure index that used as an exposure indicator. But on radiographic examination, exposure index value  sometimes ignored, and in  the preliminary survey of pediatric chest examination resulting a large exposure index range. The aim of this study is to know the profile of exposure index value and the setting of the exposure factors, the assessment of anatomy criteria and technical aspect, and the right exposure factors such as kV and mAs on pediatric chest examination.Methods: The type of this research is descriptive quantitative. The research was done by collecting data related to pediatric chest radiograph (≤ 2 years) the value of exposure index was recorded, then the radiograph was assessed using questionnaires that filled by one respondent who is a radiologist. The data was analyzed by displaying the data of exposure index and anatomy criteria from questionnaires into the table form, and then conducted a descriptive analysis to be drawn conclusions.Results: The results showed the profile of exposure index value and the setting of the exposure factor  has a fairly large exposure index range of 1084 – 2175, using 40 kV and 10 mAs and the collimation still often exceeds the object. Then for the assessment of the thorax anatomical criteria and the technical aspect overall was “Good Enough”, and the right exposure factors, that is: at 6 and 7 cm chest thickness was using 60 kV and 1,6 mAs; at 11 cm chest thickness was using 60 kV and 2 mAs, FFD 100 cm, and the setting of collimation as wide as object, the exposure index generated in the normal range that is 1251 – 1382.Conclusion: The right exposure factors on pediatric chest examination, that is: at 6 and 7 cm chest thickness was using 60 kV and 1,6 mAs; at 11 cm chest thickness was using 60 kV and 2 mAs, FFD 100 cm, and the setting of collimation as wide as object. 

Is Recheck Radiographic Examination Warranted following TPLO?

2020 ◽  
Author(s):  
Forbes JN ◽  
Frederick SW ◽  
Cross AR
Keyword(s):  
Radiographic Examination

Open Reduction for Dorsal Dislocation of Second to Fifth Carpometacarpal Joints: A Case Report

2020 ◽  
Author(s):  
Hiroo Kimura ◽  
Akira Toga ◽  
Taku Suzuki ◽  
Takuji Iwamoto
Keyword(s):  
Closed Reduction ◽  
Open Reduction ◽  
Delayed Diagnosis ◽  
Preoperative Assessment ◽  
Radiographic Examination ◽  
Clinical Images ◽  
Left Hand ◽  
Carpometacarpal Joints ◽  
Joint Deformity ◽  
Poor Outcomes

Abstract Background Fracture-dislocations of all four ulnar (second to fifth) carpometacarpal (CMC) joints are rare hand injuries and frequently overlooked or missed. These injuries can be treated conservatively when closed reduction is successfully achieved, though they are sometimes irreducible and unstable. Case Description We report the case of a 17-year-old boy involved in a vehicular accident. Clinical images showed dorsal dislocation of all four ulnar CMC joints of the left hand associated with a fracture of the base of the fourth metacarpal. Although closed reduction was attempted immediately, the affected joints remained unstable and easily redislocated. Therefore, we performed open reduction and percutaneous fixation of all ulnar CMCs. He showed excellent recovery after 1 year postoperatively, reported no pain, and demonstrated complete grip strength and range of motion of the affected wrist and fingers. Literature Review Accurate clinical diagnosis of this lesion is difficult because of polytrauma, severe swelling masking the dislocated CMC joint deformity, and overlapping of adjacent metacarpals and carpal bones on radiographic examination. As for the treatment strategy, it has yet to obtain a consensus. Some reports value open reduction to guarantee anatomical reduction, and it is definitely needed in the patients with interposed tissues to be removed or with subacute and chronic injuries. Clinical Relevance Delayed diagnosis or treatment could lead to poor outcomes. Therefore, surgeons must be aware that precise preoperative assessment is critical, and anatomical open reduction of interposed bony fragments, like our case, may be required even in an acute phase.

General Methodology for Evaluating Composite Action in Insulated Wall Panels

2017 ◽  
Author(s):  
Jaiden Olsen ◽  
Salam Al-Rubaye ◽  
Taylor Sorensen ◽  
Marc Maguire
Keyword(s):  
Composite Action ◽  
General Methodology ◽  
Wall Panels

PLC Based Sub-Assembly Station with Automated Guided Vehicle

2018 ◽  
Vol 6 (7) ◽  
pp. 256
Author(s):  
K. S. Margaret ◽  
G. Sathish Kumar ◽  
J. Narendiran ◽  
M. Raman
Keyword(s):  
Sequential Procedure ◽  
Automated Guided Vehicle ◽  
Work Station ◽  
General Methodology ◽  
Automatic Guided Vehicle ◽  
Store Room ◽  
Destination Point ◽  
Storage Bins

The aim of the project is to build an assembly station with the preventive section under the process of poke yoke system. Poke yoke is the general methodology following in industry to avoid mismatching product in assembly stations.  The main aim of this project is to avoid assembling process when the sequential procedure is not followed. The project also deals with AGV – Automatic Guided Vehicle. It automatically shifts the assembling components from store room to work station when the count of components decreases in storage bin. When the material count in the storage bins reaches the preset count it will pass signal to store room, the components will be filled manually in AGV storage bins and then the AGV is moved to the destination point (work station).

Carbon-Heteroatom Cross-Coupling via an Electronically Excited Nickel (II) Complex

2019 ◽  
Author(s):  
Randolph Escobar ◽  
Jeffrey Johannes
Keyword(s):  
Energy Transfer ◽  
Functional Groups ◽  
Cross Coupling ◽  
Reductive Elimination ◽  
Aryl Halides ◽  
Coupling Reactions ◽  
General Methodology ◽  
Cross Coupling Reactions ◽  
Electronically Excited ◽  
Energy Transfer Pathway

<div>While carbon-heteroatom cross coupling reactions have been extensively studied, many methods are specific and</div><div>limited to a set of substrates or functional groups. Reported here is a method that allows for C-O, C-N and C-S cross coupling reactions under one general methodology. We propose that an energy transfer pathway, in which an iridium photosensitizer produces an excited nickel (II) complex, is responsible for the key reductive elimination step that couples aryl halides to 1° and 2° alcohols, anilines, thiophenols, carbamates and sulfonamides.</div>

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