Complete Test Bank for Essentials of
Radiographic Physics and Imaging, 3rd
Edition by Johnston Verified Questions
and Detailed Rationales for Chapters
1-17
1
,Introduction
This comprehensive test bank has been refactored and expanded to include additional questions
sourced from reliable educational resources like Quizlet, with enhanced rationales for better
understanding. Each chapter now includes more bulk with extended explanations, additional
relevant questions, and reorganized structure for clarity. Questions are highlighted in very dark
red for emphasis. The document has been expanded to exceed 60 pages with detailed content.
2
, 1 Chapter 1: Introduction to the Imaging Sciences
Overview
This chapter covers the discovery of x-rays, radiation quantities, units, and basic safety princi-
ples. Expanded with additional questions for depth.
1. Question: X-rays were discovered
a. November 8, 1805
b. November 8, 1875
c. November 8, 1895
d. November 8, 1985
Answer: c. November 8, 1895
Rationale: X-rays were discovered by Wilhelm Roentgen on November 8, 1895, while
experimenting with cathode rays. This marked the beginning of medical imaging.
2. Question: Barium platinocyanide was the material in Dr. Roentgens labora-
tory that
a. covered the cathode ray tube
b. fluoresced when the cathode ray tube was energized
c. was used to produce the radiograph of Bertha Roentgens hand
d. protected the people in the room from the x-rays
Answer: b. fluoresced when the cathode ray tube was energized
Rationale: The fluorescence of barium platinocyanide led Roentgen to investigate invis-
ible rays, which he named x-rays. This accidental observation was pivotal.
3. Question: Wilhelm Roentgens lab was located in
a. Wurzburg
b. Zurich
c. Paris
d. Boston
Answer: a. Wurzburg
Rationale: The University of Wurzburg in Germany was where Roentgen conducted his
experiments, leading to the Nobel Prize in Physics in 1901.
4. Question: The first radiograph produced by Dr. Roentgen was of
a. his own hand
b. his daughters hand
c. his sons hand
d. his wifes hand
Answer: d. his wifes hand
Rationale: The radiograph of Bertha Roentgen’s hand, showing her wedding ring, was
taken on December 22, 1895, demonstrating x-ray penetration.
5. Question: Exposure times for very early radiographs ranged from
a. 1 second to 5 seconds
b. 1 minute to 15 minutes
c. 20 minutes to 2 hours
d. 2 hours to 5 hours
Answer: c. 20 minutes to 2 hours
Rationale: Early x-ray tubes were inefficient, requiring long exposures, which limited
practical use until advancements in technology.
3
Radiographic Physics and Imaging, 3rd
Edition by Johnston Verified Questions
and Detailed Rationales for Chapters
1-17
1
,Introduction
This comprehensive test bank has been refactored and expanded to include additional questions
sourced from reliable educational resources like Quizlet, with enhanced rationales for better
understanding. Each chapter now includes more bulk with extended explanations, additional
relevant questions, and reorganized structure for clarity. Questions are highlighted in very dark
red for emphasis. The document has been expanded to exceed 60 pages with detailed content.
2
, 1 Chapter 1: Introduction to the Imaging Sciences
Overview
This chapter covers the discovery of x-rays, radiation quantities, units, and basic safety princi-
ples. Expanded with additional questions for depth.
1. Question: X-rays were discovered
a. November 8, 1805
b. November 8, 1875
c. November 8, 1895
d. November 8, 1985
Answer: c. November 8, 1895
Rationale: X-rays were discovered by Wilhelm Roentgen on November 8, 1895, while
experimenting with cathode rays. This marked the beginning of medical imaging.
2. Question: Barium platinocyanide was the material in Dr. Roentgens labora-
tory that
a. covered the cathode ray tube
b. fluoresced when the cathode ray tube was energized
c. was used to produce the radiograph of Bertha Roentgens hand
d. protected the people in the room from the x-rays
Answer: b. fluoresced when the cathode ray tube was energized
Rationale: The fluorescence of barium platinocyanide led Roentgen to investigate invis-
ible rays, which he named x-rays. This accidental observation was pivotal.
3. Question: Wilhelm Roentgens lab was located in
a. Wurzburg
b. Zurich
c. Paris
d. Boston
Answer: a. Wurzburg
Rationale: The University of Wurzburg in Germany was where Roentgen conducted his
experiments, leading to the Nobel Prize in Physics in 1901.
4. Question: The first radiograph produced by Dr. Roentgen was of
a. his own hand
b. his daughters hand
c. his sons hand
d. his wifes hand
Answer: d. his wifes hand
Rationale: The radiograph of Bertha Roentgen’s hand, showing her wedding ring, was
taken on December 22, 1895, demonstrating x-ray penetration.
5. Question: Exposure times for very early radiographs ranged from
a. 1 second to 5 seconds
b. 1 minute to 15 minutes
c. 20 minutes to 2 hours
d. 2 hours to 5 hours
Answer: c. 20 minutes to 2 hours
Rationale: Early x-ray tubes were inefficient, requiring long exposures, which limited
practical use until advancements in technology.
3
