ASRT Registry Practice Test #2
Which of the following is a benign tumor arising from Schwann cells of the eighth cranial
nerve?
A) pituitary adenoma
B) multiple myeloma
C) osteoma
D) acoustic neuroma - answerD) acoustic neuroma
An increase in the difference between the atomic numbers or densities of adjacent
tissues results in increased:
A) subject contrast.
B) distortion.
C) spatial resolution.
D) receptor exposure. - answerA) subject contrast.
The maximum annual exposure for the general population is ____ mSv/year, which is
____ that permissible for occupationally exposed individuals.
A) 5; 1/10
B) 50; 1/20
C) 500; 1/20
D) 0.5; 1/10 - answerA) 5; 1/10
Which of the following are properties of positive contrast agents? 1. composed of low-
atomic number elements 2. increase x-ray attenuation 3. produce areas of decreased
density on the image
A) 1 and 2
B) 1 and 3
C) 2 and 3
D) 1, 2, and 3 - answerC) 2 and 3
Which imaging informatics system is a communication network of computers for image
acquisition, display, and storage?
A) picture archiving and communications system (PACS)
B) radiology information system (RIS)
C) health information system (HIS)
D) electronic health record (EHR) - answerA) picture archiving and communications
system (PACS)
,A malignant tumor in the bone is a(n):
A) chondrosarcoma.
B) enchondroma.
C) Ewing sarcoma.
D) osteosarcoma. - answerD) osteosarcoma.
The cumulative timer on the fluoroscopy unit is a protective device to remind the
operator of the exposure time. The cumulative timer must be reset every ______
minutes.
A) 2
B) 3
C) 5
D) 10 - answerC) 5
For a PA projection of the chest, the central ray is adjusted parallel to _______ and
enters at the level of ________.
A) T7; the midcoronal plane
B) T7; the midsagittal plane
C) the midcoronal plane; T7
D) the midsagittal plane; T7 - answerD) the midsagittal plane; T7
MOST cell damage from ionizing radiation occurs when x-rays interact with:
A) free radicals.
B) DNA.
C) water molecules.
D) electrons. - answerC) water molecules.
Current that flows in only one direction is called _________ current.
A) battery
B) direct
C) alternating
D) outlet - answerB) direct
While performing intravenous drug injections, it is necessary to decrease the angle of
the needle once a flashback is seen in the intravenous catheter to:
A) avoid passing through the vein.
B) avoid puncturing a vein.
C) stabilize the vein.
D) release pressure on the vein. - answerA) avoid passing through the vein.
, Increasing the kVp from 70 to 80 will result in an increase in all of the following EXCEPT
the ________ of ________ photons.
A) quantity; bremsstrahlung
B) quantity; characteristic
C) quality; bremsstrahlung
D) quality; characteristic - answerD) quality; characteristic
The central ray angle for an AP axial projection of the foot is:
A) 0°.
B) 10°.
C) 15°.
D) 30° to 45°. - answerB) 10°.
The temporal mandibular joint (TMJ) is a ________ joint.
A) fibrous suture
B) fibrous hinge and gliding
C) synovial suture
D) synovial hinge and gliding - answerD) synovial hinge and gliding
The sampling frequency of an imaging system determines the:
A) pixel size.
B) bit depth.
C) dynamic range.
D) detective quantum efficiency. - answerA) pixel size.
Which of the following statements is TRUE?
A) High linear energy transfer (LET) radiation has a high relative biological effectiveness
(RBE).
B) Low LET radiation has a high RBE.
C) Low RBE radiation has a high LET.
D) LET and RBE have no correlation to each other. - answerA) High linear energy
transfer (LET) radiation has a high relative
The ________ x-ray interaction is MOST common in the human body.
A) Compton
B) characteristic
C) photoelectric
D) bremsstrahlung - answerA) Compton
When H2O gains an electron it becomes:
Which of the following is a benign tumor arising from Schwann cells of the eighth cranial
nerve?
A) pituitary adenoma
B) multiple myeloma
C) osteoma
D) acoustic neuroma - answerD) acoustic neuroma
An increase in the difference between the atomic numbers or densities of adjacent
tissues results in increased:
A) subject contrast.
B) distortion.
C) spatial resolution.
D) receptor exposure. - answerA) subject contrast.
The maximum annual exposure for the general population is ____ mSv/year, which is
____ that permissible for occupationally exposed individuals.
A) 5; 1/10
B) 50; 1/20
C) 500; 1/20
D) 0.5; 1/10 - answerA) 5; 1/10
Which of the following are properties of positive contrast agents? 1. composed of low-
atomic number elements 2. increase x-ray attenuation 3. produce areas of decreased
density on the image
A) 1 and 2
B) 1 and 3
C) 2 and 3
D) 1, 2, and 3 - answerC) 2 and 3
Which imaging informatics system is a communication network of computers for image
acquisition, display, and storage?
A) picture archiving and communications system (PACS)
B) radiology information system (RIS)
C) health information system (HIS)
D) electronic health record (EHR) - answerA) picture archiving and communications
system (PACS)
,A malignant tumor in the bone is a(n):
A) chondrosarcoma.
B) enchondroma.
C) Ewing sarcoma.
D) osteosarcoma. - answerD) osteosarcoma.
The cumulative timer on the fluoroscopy unit is a protective device to remind the
operator of the exposure time. The cumulative timer must be reset every ______
minutes.
A) 2
B) 3
C) 5
D) 10 - answerC) 5
For a PA projection of the chest, the central ray is adjusted parallel to _______ and
enters at the level of ________.
A) T7; the midcoronal plane
B) T7; the midsagittal plane
C) the midcoronal plane; T7
D) the midsagittal plane; T7 - answerD) the midsagittal plane; T7
MOST cell damage from ionizing radiation occurs when x-rays interact with:
A) free radicals.
B) DNA.
C) water molecules.
D) electrons. - answerC) water molecules.
Current that flows in only one direction is called _________ current.
A) battery
B) direct
C) alternating
D) outlet - answerB) direct
While performing intravenous drug injections, it is necessary to decrease the angle of
the needle once a flashback is seen in the intravenous catheter to:
A) avoid passing through the vein.
B) avoid puncturing a vein.
C) stabilize the vein.
D) release pressure on the vein. - answerA) avoid passing through the vein.
, Increasing the kVp from 70 to 80 will result in an increase in all of the following EXCEPT
the ________ of ________ photons.
A) quantity; bremsstrahlung
B) quantity; characteristic
C) quality; bremsstrahlung
D) quality; characteristic - answerD) quality; characteristic
The central ray angle for an AP axial projection of the foot is:
A) 0°.
B) 10°.
C) 15°.
D) 30° to 45°. - answerB) 10°.
The temporal mandibular joint (TMJ) is a ________ joint.
A) fibrous suture
B) fibrous hinge and gliding
C) synovial suture
D) synovial hinge and gliding - answerD) synovial hinge and gliding
The sampling frequency of an imaging system determines the:
A) pixel size.
B) bit depth.
C) dynamic range.
D) detective quantum efficiency. - answerA) pixel size.
Which of the following statements is TRUE?
A) High linear energy transfer (LET) radiation has a high relative biological effectiveness
(RBE).
B) Low LET radiation has a high RBE.
C) Low RBE radiation has a high LET.
D) LET and RBE have no correlation to each other. - answerA) High linear energy
transfer (LET) radiation has a high relative
The ________ x-ray interaction is MOST common in the human body.
A) Compton
B) characteristic
C) photoelectric
D) bremsstrahlung - answerA) Compton
When H2O gains an electron it becomes:
