Chapter 17: Paralleling Technique

Chapter 17: Paralleling Technique

Complete Chapter Questions With Answers

Sample Questions Are Posted Below

MULTIPLE CHOICE

1. Parallel is defined as

ANS:  C

Intersecting is defined as cutting across or through. Perpendicular is defined as intersecting at or forming a right angle. Parallel is defined as moving or lying in the same plane, always separated by the same distance and not intersecting. Right angle is defined as an angle of 90 degrees formed by two lines perpendicular to each other.

DIF:    Recall             REF:   Page 152        OBJ:   1

TOP:   CDA, RHS, I.B.1.b.ii. Compare paralleling and bisecting angle techniques, including advantages and disadvantages            MSC:  NBDHE, 2.3 Technique

2. According to the basic principles of the paralleling technique, the receptor is placed in the mouth _________ to the long axis of the tooth being x-rayed, and the central ray of the x-ray beam is directed ____________ to the receptor and long axis of the tooth.

ANS:  A

According to the basic principles of the paralleling technique, the receptor is placed in the mouth parallel to the long axis of the tooth being x-rayed, and the central ray of the x-ray beam is directed perpendicular to the receptor and long axis of the tooth.

DIF:    Recall             REF:   Page 152        OBJ:   2

TOP:   CDA, RHS, I.B.1.b.ii. Compare paralleling and bisecting angle techniques, including advantages and disadvantages            MSC:  NBDHE, 2.3 Technique

3. To achieve parallelism between the receptor and the tooth, the ____________ distance must be increased to keep the receptor parallel with the long axis of the tooth.

ANS:  B

To achieve parallelism between the receptor and the tooth, the object-receptor distance must be increased to keep the receptor parallel with the long axis of the tooth.

DIF:    Recall             REF:   Page 153        OBJ:   3

TOP:   CDA, RHS, I.B.1.b.ii. Compare paralleling and bisecting angle techniques, including advantages and disadvantages            MSC:  NBDHE, 2.3 Technique

4. Image magnification occurs when the ______________ distance is increased.

ANS:  B

An increased object-receptor distance results in increased image magnification.

DIF:    Comprehension                               REF:   Pages 153, 154

OBJ:   3

TOP:   CDA, RHS, I.B.1.b.ii. Compare paralleling and bisecting angle techniques, including advantages and disadvantages            MSC:  NBDHE, 2.3 Technique

5. Image magnification can be decreased when the _______________ is increased.

ANS:  C

An increased target-receptor distance can compensate for image magnification.

DIF:    Comprehension                               REF:   Page 153        OBJ:   3

TOP:   CDA, RHS, I.B.1.b.ii. Compare paralleling and bisecting angle techniques, including advantages and disadvantages            MSC:  NBDHE, 2.3 Technique