Dental Radiography Principles and Techniques 5th Edition By Joen Iannucci-Test Bank
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ISBN-10: 0323297420, ISBN-13: 978-0323297424
Chapter 01: Evolution of Radiation
SELECT THE CORRECT OPTION
- The term radiation can be described as
| a. | a kind of energy transmitted by waves or streams of particles. |
| b. | a beam of energy capable of penetrating materials and producing image shadows on a receptor. |
| c. | a high-energy radiation created by the interaction of an electron beam with a metal target inside an x-ray tube. |
| d. | a field of medicine dealing with the utilization of x-rays. |
ANS: A
Radiation stands as a type of energy conveyed by waves or streams of particles. An x-ray serves as a beam of energy that can penetrate materials and form image shadows on a receptor. X-radiation is a high-energy radiation generated by the collision of an electron beam with a metal target in an x-ray tube. Radiology represents a field of medicine that focuses on the use of x-rays.
DIF: Recall REF: Page 2 OBJ: 1
TOP: CDA, RHS, III.B.2. Examine the properties of x-radiation
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.1 Fundamentals of radiophysics and radiobiology
- What is the meaning of a radiograph?
| a. | a beam of energy capable of penetrating materials and producing image shadows on a receptor. |
| b. | a depiction on film generated by the passage of x-rays through an object or body. |
| c. | the practice and knowledge in creating radiographs by exposing an image receptor to x-rays. |
| d. | a form of energy transmitted by waves or a stream of particles. |
ANS: B
An x-ray refers to a beam of energy capable of penetrating substances and creating image shadows on a receptor. A radiograph represents an image on film formed by the passage of x-rays through an object or body. Radiography denotes the practice and skill involved in producing dental images by exposing a receptor to x-rays. Radiation stands as a form of energy conveyed by waves or streams of particles.
DIF: Comprehension REF: Page 2 OBJ: 1
TOP: CDA, RHS, III.B.2. Examine the properties of x-radiation
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.1 Fundamentals of radiophysics and radiobiology
- Your client inquired about the significance of dental images. What is the appropriate response?
| a. | A dental examination with dental pictures confines the professional to what is physically observed. |
| b. | All dental ailments and conditions exhibit physical symptoms. |
| c. | Dental images do not form a vital component of comprehensive patient management. |
| d. | Numerous dental illnesses are typically identified only through the application of dental images. |
ANS: D
An oral assessment without dental images binds the professional to what is directly observable. Many dental diseases and conditions present no physical signs or symptoms. Dental images represent an essential aspect of comprehensive patient management. Several dental ailments are usually disclosed solely through the utilization of dental images.
DIF: Application REF: Page 2 OBJ: 2
TOP: CDA, RHS, III.B.2. Examine the properties of x-radiation
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.5 General
- Who is credited with discovering the x-ray?
| a. | Heinrich Geissler |
| b. | Wilhelm Roentgen |
| c. | Johann Hittorf |
| d. | William Crookes |
ANS: B
Heinrich Geissler established the initial vacuum tube in 1838. Wilhelm Roentgen stumbled upon the x-ray on November 8, 1895. Johann Hittorf observed in 1870 that emissions discharged from the negative electrode of a vacuum tube traveled linearly, generated heat, and resulted in a green fluorescence. William Crookes determined in the late 1870s that cathode rays comprised streams of charged particles.
DIF: Recall REF: Page 2 OBJ: 4
TOP: CDA, RHS, III.B.2. Examine the properties of x-radiation
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.5 General
- Which individual performed the first dental radiograph in the United States utilizing a live subject?
| a. | Otto Walkoff |
| b. | Wilhelm Roentgen |
| c. | Edmund Kells |
| d. | Weston Price |
ANS: C
Otto Walkoff, a German dentist, produced the first dental radiograph. Wilhelm Roentgen, a Bavarian physicist, discovered the x-ray. Edmund Kells conducted the first dental radiograph in the United States with a live subject. Price introduced the bisecting technique in 1904.
DIF: Recall REF: Page 4 OBJ: 5
TOP: CDA, RHS, III.B.2. Examine the properties of x-radiation
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.5 General
- Modern fast radiographic film demands ____ % reduced exposure duration compared to initial exposure times from 1920.
| a. | 33 |
| b. | 98 |
| c. | 73 |
| d. | 2 |
ANS: D
Current quick radiographic film necessitates 98% less exposure duration in contrast to the initial exposure times deployed in 1920.
DIF: Comprehension REF: Page 5 OBJ: 6
TOP: CDA, RHS, III.B.2. Examine the properties of x-radiation
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.5 General
- Which person enhanced the paralleling technique by introducing the long-cone technique?
| a. | C. Edmund Kells |
| b. | Franklin W. McCormack |
| c. | F. Gordon Fitzgerald |
| d. | Howard Riley Raper |
ANS: C
- Edmund Kells introduced the paralleling technique in 1896. Franklin W. McCormack reintroduced the paralleling technique in 1920. F. Gordon Fitzgerald altered the paralleling technique with the introduction of the long-cone technique. This denotes the technique presently utilized. Howard Riley Raper modified the bisecting technique and introduced the bite-wing technique in 1925.
DIF: Recall REF: Page 4 OBJ: 7
TOP: CDA, RHS, III.B.2. Examine the properties of x-radiation
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.5 General
- What represents a benefit of digital imaging?
| a. | Increased patient radiation exposure |
| b. | Enhanced patient comfort |
| c. | Quicker image viewing |
| d. | Greater chemical utilization |
ANS: C
Patient exposure gets minimized with digital imaging. Digital sensors possess a higher sensitivity to x-rays than film. Digital sensors are rigid and bulky, causing reduced patient comfort. The image from digital sensors is directly uploaded to the computer and monitor without the requirement for chemical processing. This leads to immediate interpretation and evaluation. The image from digital sensors is directly uploaded to the computer and monitor without the requirement for chemical processing.
DIF: Comprehension REF: Page 6 OBJ: 7
TOP: CDA, RHS, I.B.2. Display fundamental knowledge of digital radiography
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.5 General
- Which discovery served as a precursor to the finding of x-rays?
| a. | Beta particles |
| b. | Alpha particles |
| c. | Cathode rays |
| d. | Radioactive materials |
ANS: C
Beta particles represent rapidly moving electrons discharged from the nucleus of radioactive atoms and are not connected to x-rays. Alpha particles emanate from the nuclei of weighty metals and are not connected to x-rays. Wilhelm Roentgen was investigating cathode rays at the moment of discovering x-rays. Radioactive materials refer to specific unstable atoms or elements undergoing spontaneous disintegration or decay.
DIF: Comprehension REF: Page 3 OBJ: 4
TOP: CDA, RHS, III.B.2. Examine the properties of x-radiation
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.5 General
- What should be placed inside the patient’s mouth for capturing dental x-rays?
| a. | Image |
| b. | Image receptor |
| c. | Radiograph |
| d. | Dental radiograph |
ANS: B
An image represents a picture or likeness of an object. An image receptor serves as the recording medium (film, phosphor plate, or digital sensor) that is positioned in the patient’s mouth to record the image produced by the x-rays. A radiograph is an image of two-dimensional representation of a three- dimensional object. A dental radiograph signifies the dental image produced on a recording medium.
DIF: Application REF: Page 2 OBJ: 1
TOP: CDA, RHS, III.B.2. Examine the properties of x-radiation
MSC: NBDHE, 2.0 Acquiring and Interpreting Radiographs | NBDHE, 2.5 General
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