Chapter 20 Quiz Me Flashcards

1
Q

The ACS recommends that women over the age of _____ should have a screening mammogram.

A

40

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2
Q

Each adult, female breast is made up of _____ lobes.

A

15-20

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3
Q

What is the name for the band-like extensions of fibrous tissue that provide support for the mammary gland?

A

Cooper’s (suspensory) ligaments

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4
Q

Common focal spot sizes for dedicated mammographic tubes range from:

A

0.1 to 0.3 mm

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5
Q

What is (are) the reason(s) for the high dose delivered during mammography?

A

low kVp, high mAs, limited added filtration

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6
Q

The major purpose of using sonography for studies of the breast is to:

A

distinguish between a cyst and a solid lesion

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7
Q

The most common benign tumor(s) found in the breast is/are:

A

fibroadenoma

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8
Q

Bone loss resulting from osteoporosis is first visible on images when it exceeds:

A

30%-50%

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9
Q

One of the chief functions of osteoclasts is to:

A

remove bone

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10
Q

The most common site for QUS is the:

A

Os calcis

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11
Q

Another term for a radiopharmaceutical used in nuclear medicine imaging is a(n):

A

ion

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12
Q

Which member of the nuclear medicine team has the responsibility of calibrating and maintaining the nuclear imaging equipment?

A

health physicist

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13
Q

The process of “annihilation” will produce a positron and an electron, which are converted into two _____ protons.

A

511-keV

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14
Q

The PET compound, 18F-FDG, is given to evaluate:

A

glucose metabolism

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15
Q

T or F: An increase in glycolysis in a specific organ or region of the body is indicative of malignancy during a PET scan.

A

true

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16
Q

Which member of the radiation therapy team has the primary responsibility of patient education?

A

radiation oncology nurse

17
Q

The energy of sound waves used diagnostic medical ultrasound ranges from:

A

2 to 20 MHz

18
Q

T or F: The ALARA principle must be followed even with medical ultrasound (sonography).

A

True

19
Q

Which pathologic condition would not be visualized well with diagnostic ultrasound?

A

Ileus

20
Q

The time required for the MRI signal to decrease to 37% of its maximum value defines:

A

T1 relaxation

21
Q

Which of the following is not an absolute contraindication for an MRI procedure?

A

pregnancy