ILLINOIS RADIOLOGIC TECHNOLOGIST EXAM PRACTICE TEST 100 QUESTIONS AND
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE|
INSTANT DOWNLOAD PDF
,Core Domains
- Patient Care and Interpersonal Communication
- Radiation Protection and Safety (ALARA Principles)
- Radiographic Physics and Radiobiology
- Image Production and Technical Evaluation
- Radiographic Procedures and Anatomy
- Equipment Operation and Quality Assurance
- Ethical and Legal Considerations
- Infection Control and Prevention
Introduction
This practice test is designed to prepare candidates for the Illinois Radiologic Technologist certification
examination. The exam assesses essential skills and knowledge required for safe, effective practice in
radiologic technology, including patient care, radiation safety, image production, and procedural
competency. The assessment features multiple-choice and scenario-based questions that emphasize real-
world application and critical decision-making in clinical settings. Candidates will encounter questions
covering foundational theory, applied professional knowledge, regulatory compliance, ethics, and critical
thinking necessary for successful radiologic technologist practice.
*
Section One: Questions 1–100
,Question 1
A radiologic technologist is preparing to perform a chest X-ray on a patient with suspected tuberculosis. Which
infection control measure is MOST critical to prevent transmission?
A. Wearing a gown over regular clothing
B. Using a lead apron without coverage
C. Wearing a fit-tested N95 respirator mask
D. Washing hands with regular soap only
🟢 Correct answer: C
🔴 RATIONALE: A fit-tested N95 respirator mask is the most critical infection control measure for
tuberculosis, which is transmitted via airborne particles. Standard surgical masks do not provide adequate
protection against airborne pathogens like TB.
Question 2
What is the primary purpose of the ALARA principle in radiologic technology?
A. To maximize image quality regardless of dose
B. To ensure the lowest possible radiation dose to patients and personnel
C. To increase the speed of imaging procedures
D. To reduce the cost of radiologic equipment
🟢 Correct answer: B
, 🔴 RATIONALE: ALARA (As Low As Reasonably Achievable) is a fundamental radiation safety principle that
mandates minimizing radiation exposure to patients and personnel while maintaining adequate image quality
for diagnostic purposes.
Question 3
Which of the following best describes the biological effect of ionizing radiation on cellular DNA?
A. Radiation causes temporary heating of DNA molecules
B. Radiation creates free radicals that can cause DNA strand breaks
C. Radiation strengthens DNA bonds making cells more resistant
D. Radiation has no measurable effect on DNA structure
🟢 Correct answer: B
🔴 RATIONALE: Ionizing radiation creates free radicals that can cause direct DNA strand breaks or indirect
damage through chemical reactions, potentially leading to cell death, mutations, or cancer if not properly
repaired.
Question 4
A patient informs the technologist that they are pregnant before a scheduled abdominal X-ray. What is the
MOST appropriate initial action?
A. Proceed with the X-ray using a lead shield
B. Cancel the procedure immediately without notification
C. Notify the referring physician and radiologist to discuss alternatives
D. Perform the X-ray but reduce the exposure factors by 50%
CORRECT ANSWERS (VERIFIED ANSWERS) PLUS RATIONALES 2026 Q&A |STUDY GUIDE|
INSTANT DOWNLOAD PDF
,Core Domains
- Patient Care and Interpersonal Communication
- Radiation Protection and Safety (ALARA Principles)
- Radiographic Physics and Radiobiology
- Image Production and Technical Evaluation
- Radiographic Procedures and Anatomy
- Equipment Operation and Quality Assurance
- Ethical and Legal Considerations
- Infection Control and Prevention
Introduction
This practice test is designed to prepare candidates for the Illinois Radiologic Technologist certification
examination. The exam assesses essential skills and knowledge required for safe, effective practice in
radiologic technology, including patient care, radiation safety, image production, and procedural
competency. The assessment features multiple-choice and scenario-based questions that emphasize real-
world application and critical decision-making in clinical settings. Candidates will encounter questions
covering foundational theory, applied professional knowledge, regulatory compliance, ethics, and critical
thinking necessary for successful radiologic technologist practice.
*
Section One: Questions 1–100
,Question 1
A radiologic technologist is preparing to perform a chest X-ray on a patient with suspected tuberculosis. Which
infection control measure is MOST critical to prevent transmission?
A. Wearing a gown over regular clothing
B. Using a lead apron without coverage
C. Wearing a fit-tested N95 respirator mask
D. Washing hands with regular soap only
🟢 Correct answer: C
🔴 RATIONALE: A fit-tested N95 respirator mask is the most critical infection control measure for
tuberculosis, which is transmitted via airborne particles. Standard surgical masks do not provide adequate
protection against airborne pathogens like TB.
Question 2
What is the primary purpose of the ALARA principle in radiologic technology?
A. To maximize image quality regardless of dose
B. To ensure the lowest possible radiation dose to patients and personnel
C. To increase the speed of imaging procedures
D. To reduce the cost of radiologic equipment
🟢 Correct answer: B
, 🔴 RATIONALE: ALARA (As Low As Reasonably Achievable) is a fundamental radiation safety principle that
mandates minimizing radiation exposure to patients and personnel while maintaining adequate image quality
for diagnostic purposes.
Question 3
Which of the following best describes the biological effect of ionizing radiation on cellular DNA?
A. Radiation causes temporary heating of DNA molecules
B. Radiation creates free radicals that can cause DNA strand breaks
C. Radiation strengthens DNA bonds making cells more resistant
D. Radiation has no measurable effect on DNA structure
🟢 Correct answer: B
🔴 RATIONALE: Ionizing radiation creates free radicals that can cause direct DNA strand breaks or indirect
damage through chemical reactions, potentially leading to cell death, mutations, or cancer if not properly
repaired.
Question 4
A patient informs the technologist that they are pregnant before a scheduled abdominal X-ray. What is the
MOST appropriate initial action?
A. Proceed with the X-ray using a lead shield
B. Cancel the procedure immediately without notification
C. Notify the referring physician and radiologist to discuss alternatives
D. Perform the X-ray but reduce the exposure factors by 50%
