Choice of Tube Extremity in Emission of Lowest Radiation Dose in Pediatric Patients

Study Overview
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Brief Summary
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Compare the radiation in pediatric patients thyroid submitted to chest X-ray using the position of the anode and cathode.

Detailed Description
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The study's primary goal was to compare radiation exposure in two different positions during chest x rays in children. It was conducted from June/2014 to July/2015, and included children from 0 to12 years old staying at the Pediatric Intensive Care Unit at the Instituto de Cardiologia de Porto Alegre, Brazil, with chest x ray requests during ICU stay. They were randomized to two groups: during the x ray, one group was positioned with the thyroid facing the anode end, and the other group was positioned with the thyroid facing the cathode end.

Official Title
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Choice of Tube Extremity in Emission of Lowest Radiation Dose in Pediatric Patients

Conditions
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Radiation Absorption, Radiography

Intervention / Treatment
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* Other: Thyroid facing the anode end of xray machine
* Other: Thyroid facing the cathode end of xray machine


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Younger than 12 years old Admitted to the Paediatric ICU at Instituto de Cardiologia de Porto Alegre Chest X ray requested by treating physician Exclusion Criteria: Patients with scans that failed to comply with the technical criteria from the European Community Commission guidelines on quality criteria for diagnostic radiographic images in paediatrics, as evaluated by the radiologist doctors responsible for that exam report.

Ages Eligible for Study
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Maximum Age: 12 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Allocation: Randomized
Intervention Model: Parallel Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: Cathode<br>Thyroid facing the cathode end of xray machine | Other: Thyroid facing the cathode end of xray machine<br>* Thyroid position: facing the cathode end of xray machine<br>|
| Active Comparator: Anode<br>Thyroid facing the anode end of xray machine | Other: Thyroid facing the anode end of xray machine<br>* Thyroid position: facing the anode end of xray machine<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Dose of radiation used in thyroid gland with Ionization chamber | Assessed using ionization chamber | One month | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Dose of radiation used in thorax with spectrometer | Assessed using ionization chamber | One month | 
| Dose of radiation used in gonads with tape to measure | Assessed using ionization chamber | One month | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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Radiography, Radiation, Diagnostic imaging