RADT206 Chapter 14 Worksheet

The age recommendation for screening mammography is controversial because

Mammography is less accurate rate in the detection of breast cancer in younger women & is likely to result in false - positive readings

For rhodium x-ray tube targets, only _____________ filters are used

Rhodium

During a screening mammography, __________________ between the breast and the support plate of the mammographic x-ray machine can noticeably reduce the degree of pain experienced by a sensitive patient.

Radiolucent cushioning

During mammography, a lower patient dose per exposure will be obtained when there is

Less tissue to penetrate

Which of the following procedures will lower the percentage of false-positive readings caused by very dense breasts and consequently permit a more effective x-ray screening of younger women?

Digital tomosynthesis

The Digital Breast Tomography image creation technique uses the same algorithms as those for

Computed tomography (CT)

In newer digital mammography systems, __________ targets with ___________ or __________ filtration are replacing molybdenum x-ray tube targets with molybdenum or rhodium filtration.

- Tungsten

- Rhodium or silver

Breast positioning for Digital Breast Tomography is ______________ for conventional digital mammography.

The same

Digital Breast Tomography has the ability to overcome anatomical ______________ by adding depth resolution to a mammogram.

Noise

For mammography molybdenum filters allow a(n) _________________ than rhodium filters.

Lower energy window

Depending on the desired fineness of z-axis resolution, Digital Breast Tomography images maybe reconstructed as

Thin planes or slabs

Expanding the angular sweep of the x-ray tube during Digital Breast Tomosynthesis permits_____________ or ____________ reconstruction slices.

Finer or thinner

Performing a 3D mammogram along with a standard mammogram can result in about_________ more breast cancer found for every ____________ women screened when compared with a standard mammogram alone.

1

1,000

For Digital Breast Tomography the concept of lesion conspicuity is used to objectively quantify radiographic...

Observational error

In mammography maintaining and enhancing subject contrast is...

Of paramount importance

Digital mammography units with the ability to enhance contrast with image gray-level manipulation offer...

Substantial improvement for patients with dense breast

During mammography, axillary projections should be done only on request of the...

Radiologist

If step-and-shoot motion is employed in Digital Breast Tomography, the gantry must come to a complete stop at each angular location before delivering x-rays; otherwise vibrations will

Blur the image

The parameter that has been chosen for both standard and 3D mammography to estimate andrepresent effective dose in x-ray breast imaging is the...

Mean glandular dose (MGD)

The x-ray spectrum used for tomosynthesis is generally similar to that employed in standard digital mammography, and the selected _____________ depends on the thickness and density of the compressed breast.

Peak kilovoltage (kVp)

Artifacts present in Digital Breast Tomography are primarily due to

- Motion

- Method of acquisition

- Z-axis resolution deficiency

- Reconstruction process

______________ takes the place of glass in the window of the low-kVp producing mammographic x-ray tube.

Beryllium (4Be9)

The introduction of full-field digital mammography (FFDM) was the primary breakthrough that enabled the widespread usage of...

DBT

Protocols founded upon ____________________ which takes into account breast surface area will be a more realistic guide to better and less uncomfortable mammograms.

Compression pressure

What groups advocate annual mammography screening or mammography screening at least every other year?

- American College of Radiology

- American Cancer Society

- American Medical Association