Self Test: Part G Flashcards

What is the SI unit of radiation measurement for absorbed dose?

Which term is replacing "exposure" to describe skin dose?

What is the annual whole body effective dose (ED) for a technologist?

What is the cumulative lifetime ED for a 25 year old technologist?

What is the annual ED limit for an individual younger than 18 years of age?

The federal set maximum limit on exposure rates for intensified fluoroscopy units is:

For most modern equipment, the average fluoroscopy tabletop exposure rate is:

What is the primary purpose of x-ray tube filtration?

Which of the following results in the highest ED for females (assuming no specific area shields are used)?

The use of a 1-mm lead equivalent gonadal shield reduces the gonadal dose by _________ if the gonads are within the primary x-ray field.

Which type of shield is ideal when the affected tissue is part of a sterile field?

True/False:

Low kV and high mAs techniques greatly reduce patient dose compared with high kV and low mAs techniques.

True/False:

The total ED for females on an AP chest projection is more than double for that of a PA chest.

True/False:

The use of a positive beam limiting (PBL) collimator is no longer required by the FDA for new x-ray equipment manufactured after 1994.

True/False:

Collimators must be accurate within 5% of the selected SID.

Which of the following is not one of the cardinal principles of radiation protection?

Distance

Time

Shielding

Collimation

Which one of the following changes will best reduce patient dose?

Decrease kV and increase mAs

Increase kV and lower mAs

Using a grid

Increase mAs and lower kV

Where is the safest place for the technologist to stand during a fluoroscopic procedure?

Which of the following protection devices must be employed during a fluoroscopic procedure?

Bucky slot shield

Lead gloves

Compensating filter

Restraining devices

The ED for a pregnant technologist per month is:

True/False:

A fetal personnel dosimeter is worn at the level of the waist by a pregnant technologist during fluoroscopy.

True/False:

All administrative staff in the radiology department must wear a personnel dosimeter even if not involved with patient care directly.

True/False:

The ICRP and ARC have determined that the "10-day rule" is obsolete for procedures of the abdomen and pelvis.

True/False:

ALARA does not apply to digital imaging.

True/False:

Using a different algorithm to process an overexposed CR image is an acceptable and ethical practice.