Course Content
Introduction
Here is what to expect
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About the Exam
Resourses
About The Course
Unit 1A: Purpose and Technique (50%) (Purpose)
A. Purpose of radiographic images 1. Periapical 2. Bitewing 3. Full mouth series 4. Occlusal 5. Full-mouth survey 6. Panoramic 7. Cephalometric 8. CBCT (cone-beam computed tomography) B. Technique 1. Review patient medical and dental histories for contraindications, including medications. 2. Intraoral techniques, including error correction. a. Paralleling b. Bisecting angle 3. Extraoral techniques, including error correction. a. Panoramic b. Cephalometric c. CBCT (cone-beam computed tomography) basics 4. Technique modifications based on anatomical variations and clinical conditions. 5. Purpose and maintenance of radiographic equipment. 6. Patient management techniques. 7. Mounting and anatomical landmarks that aid in mounting. 8. Anatomical structures and dental materials observed on images (e.g., differentiating between radiolucent and radiopaque areas). 9. Features of a diagnostically acceptable image. 10. Prepare images for legal requirements (e.g., HIPAA).
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Purpose of Radiographic Images
06:55
Periapical Radiographs (PA)
01:58
Bitewing Radiographs (BWX)
01:40
Full Mouth Series (FMX)
Occlusal Radiographs
Full-mouth survey
Panoramic Radiography
Cephalometric Radiography
Cone-Beam Computed Tomography (CBCT)
Technique
Anatomy Flashcards
Quadrants, Regions, and Tooth Numbering Systems
Practice and Review
Additional Insights
Final Unit Lesson: Reviewing Radiographic Imaging Techniques
Unit I A Practice quiz
Matching Assignment: Types of Radiographs and Their Purposes
Matching Quiz: Types of Radiographs and Their Purposes
Film/Sensor Holding Devices
Unit 1B Purpose and Technique (50%) (Technique)
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Reviewing Patient Medical and Dental Histories for Contraindications, Including Medications
Techniques: Intraoral Techniques, Including Error Correction
Extraoral Techniques, Including Error Correction
Technique Modifications Based on Anatomical Variations and Clinical Conditions
Equipment Purpose & Maintenance
Patient Management Techniques in Dental Radiography
Mounting and Anatomical Landmarks in Dental Radiography
Anatomical Structures and Dental Materials in Dental Radiography
Features of a Diagnostically Acceptable Image in Dental Radiography
Legal Requirements & Image Preparation
Unit 1B Practice Quiz
The Nature of X-rays (Physics Basics)
06:34
Unit 2A: Radiation production (25%)
Radiation production. 1. Sources of radiation for operators/other staff during radiation production. 2. Factors affecting x-ray production (e.g., kVp, mA, exposure time). 3. Radiation characteristics. 4. Radiation physics. a. Primary. b. Scatter (secondary). 5. Radiation biology. a. Short-and long-term effects of radiation on cells and tissues. b. Concepts of radiation dose.
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Sources of radiation for operators/other staff during radiation production
Factors Affecting X-ray Production
Radiation Characteristics and Interactions with Matter
Radiation Production Sources
Radiation Safety and Patient Exposure
Radiation Physics in Dental Imaging
Radiation Biology and Effects on Dental Tissues
Unit 2A Summary: Radiation Health and Safety in Dental Imaging
Unit 2B: Radiation Safety
Radiation safety. 1. Causes of unnecessary exposure to radiation. 2. Patient exposure to radiation (ALARA, ADA recommendations). 3. Factors that influence radiation safety (e.g., filtration, shielding, collimation, PID length). 4. Patient radiation concerns. 5. Informed consent or patient refusal for exposure to radiation. 6. Protocol for suspected x-ray machine malfunctions.
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Radiation Safety: Causes of Unnecessary Exposure to Radiation
Patient exposure to radiation (ALARA, ADA recommendations)
Factors that Influence Radiation Safety (Filtration, Shielding, Collimation, PID Length)
Patient Radiation Concerns and Informed Consent
Informed Consent and Patient Refusal for Exposure to Radiation
Protocol for Suspected X-ray Machine Malfunctions
Summary of Unit II: Radiation Safety
Practice and Review
Unit 2 Practice Quiz
Unit 3A: Standard precautions for equipment and supplies (25%)
Standard precautions for equipment and supplies according to ADA, CDC and OSHA, including but not limited to: 1. breakdown and setup of treatment room. 2. barriers. 3. position indicating and beam alignment devices. 4. clinical contact surfaces. 5. critical and semi-critical instrument sterilization
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Introduction to Unit IIIA: Standard Precautions for Equipment and Supplies
Breakdown and Setup of Treatment Room
Use of Barriers and Position Indicating Devices (PIDs)
position indicating and beam alignment devices.
Clinical Contact Surface Maintenance
Critical and Semi-Critical Instrument Sterilization
Unit 3A Summary
Unit 3B: Standard precautions for patients and operators
Standard precautions for patients and operators according to ADA, CDC and OSHA, including but not limited to: 1. hand hygiene. 2. PPE (donning, doffing). 3. cross contamination.
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Hand Hygiene and Infection Control
Personal Protective Equipment (PPE) Protocol
Cross Contamination Prevention Strategies
Government Agencies and Associations
Infection Control and Hazardous Materials Management
Unit IIIA: Comprehensive Summary
Unit IIIB: Summary Standard Precautions for Patients and Operators
Unit 3 Practice Quiz
Vocabulary Terms
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Glossary of Vocabulary Terms
Practice Exams
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RHS Practice Test
RHS Exam Prep

Factors Affecting X-ray Production (e.g., kVp, mA, Exposure Time)

Learning Objectives

  • Understand how kilovoltage peak (kVp), milliamperage (mA), and exposure time impact X-ray production.
  • Learn to manipulate these variables for optimal imaging results and patient safety.
  • Grasp the significance of these factors in producing high-quality radiographic images.

Introduction

Mastering the variables that influence X-ray production is pivotal for any dental assistant preparing for the RHS exam and a subsequent career in dental radiography. This module aims to delve into how kilovoltage peak (kVp), milliamperage (mA), and exposure time affect the quality and safety of radiographic images. Your grasp of these concepts will aid in ensuring not only the acquisition of excellent images but also the reduction of unnecessary radiation exposure to both patients and healthcare providers.

Kilovoltage Peak (kVp)

  • Definition: kVp determines the potential difference between the anode and the cathode in an X-ray tube.
  • Impact: Higher kVp results in X-rays with greater energy and penetrating ability.
  • Clinical Significance: Increased kVp can reduce the exposure time needed, thereby reducing the patient’s overall radiation dose. However, it also produces shorter wavelengths, which may increase the risk of ionizing radiation.

Milliamperage (mA)

  • Definition: mA measures the amount of electrical current passing through the X-ray tube.
  • Impact: Higher mA levels lead to an increase in the number of electrons, thereby producing more X-ray photons.
  • Clinical Significance: Manipulating mA allows you to control the film’s darkness or lightness, but it also impacts patient exposure.

Exposure Time

  • Definition: This is the duration for which the X-ray beam is activated.
  • Impact: Longer exposure times result in more X-rays being produced, which could lead to overexposure.
  • Clinical Significance: A precise exposure time should be calculated to minimize the risk to the patient while still obtaining a diagnostically useful image.

Balancing the Variables

  • Understanding how kVp, mA, and exposure time interact will allow you to produce high-quality images while minimizing radiation exposure.
  • Often, a change in one variable will require adjustments in the others to maintain image quality.

Summary

Manipulating kVp, mA, and exposure time is a balancing act that requires both knowledge and experience. Through understanding these factors, you can ensure not only the production of high-quality radiographic images but also a safe environment for both patients and operators.

© Coy Academy 2023. This module is exclusively intended for use within the Coy Academy course and is protected by copyright laws. It is provided solely for educational purposes and should not be shared, distributed, or published without prior authorization. Unauthorized reproduction or distribution of this material is strictly prohibited and may result in legal action. For full course content, please visit coyacademy.com.

Exercise Files
202 Factors affecting x-ray production.mp3.mp3
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