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C4RT UPPER EXTREMITY PRACTICE QUESTIONS WITH 100% CORRECT ANSWERS!!
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C4RT UPPER EXTREMITY PRACTICE QUESTIONS WITH 100% CORRECT ANSWERS!!
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C4RT UPPEREXTREMITY PRACTICE
QUESTIONS WITH
100% CORRECT
ANSWERS!!
C4RT
Evatee 9/4/24 C4RT
,C4RT UPPER EXTREMITY PRACTICE
QUESTIONS WITH 100% CORRECT
ANSWERS!!
A German Physicist, Roentgen, is credited for discovering xrays in ________
Answer - 1895
The very first x-ray image was taken by Wilhem Roentgen of _______ just two
weeks after it's invention Answer - His wife Anna Bertha's hand
Cellulose acetate films replaced glass plates in Answer - 1918
In the year ____ x-ray cerebral angiography was developed at the University of
_____ Answer - 1927 - Lisbon
The first automatic film processor was introduced by PAKO corp in Answer -
1942
Digital Radiography (DR) first made an appearance around the year ____
Answer - 1970
George Luckey patented the utilization of phosphor imaging plates for storage
in 1975 creating modern Answer - Computed Radiography (CR)
CT was introduced in the Answer - 1970s
, A measure of the energy deposited into a medium by ionizing radiation per
unit mass Answer - Absorbed dose
The external exposure dose at 0.3 cm, equivalent to the lens of the eye at
tissue depth Answer - Lens Dose Equivalent
Mean grandular dose (MGD) (also known as average grandular dose) is
commonly used in Answer - Mammography
What is the Standard International (SI) unit of absorbed dose, which represents
the amount of radiation required to deposit 1 joule of energy into 1 kilogram of
any kind of matter Answer - gray (Gy)
______ is an approximate measure of the biological effects of radiation on
tissues and organs with a calculation modifier based on the type of radiation
Answer - Equivalent dose (HT)
The unit defined as the average radiation dose for a person being exposed to
normal, natural background radiation Answer - BERT (Background Equivalent
Radiation Time)
The sum of tissue equivalent doses received, combined with a tissue weighting
factor (wT), is used to calculated the ________________. The measurement is
used to show how the different dose combinations affect various types of
tissue Answer - effective dose
What organization launched a Dose Index Registry in May, 2011 to address the
lack of substantial database for determining the average dose indices for a CT
exam in the United States. Answer - American College of Radiology (ACR)
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