ARRT Registry Practice Test #1 | Complete Radiography Exam
Questions & Verified Answers | Comprehensive ARRT Certification
Review Guide | Latest Diagnostic Imaging Prep for Guaranteed Success
All Of The Following Except ___ Will Result In An Increase In Aec Response Time.
A. Decreasing The Kvp
B. Increasing The Focal Spot Size
C. Increasing The Part Thickness
D. Increasing The Sid
Ans: B. Increasing The Focal Spot Size
Feedback: Increasing The Focal Spot Size Does Not Change The Aec Response Time It Affects
The Spatial Resolution. Decreasing The Kvp Increases The Exposure Time Because More Photons
Are Absorbed, Resulting In Fewer Reaching The Cell(S). The Same Is True For Increasing Part
Thickness. Increasing The Sid Results In A Longer Exposure Time Because Of Beam Divergence
And The Decrease In The Number Of Photons Reaching The Cell(S).
Of The Following, The Greatest Attenuator Of X-Rays Is:
A. Air
B. Bone
C. Muscle
D. Fat
Ans: B. Bone
Feedback: Air Allows For The Greatest Transmission Of X-Rays. The Probability Of Bone And
Soft Tissue (Muscle, Fat) Attenuating X-Rays Via Compton Interactions Is Roughly The Same.
However, Since Bone Has A Higher Effective Atomic Number Than Soft Tissue, Bone Attenuates
More X-Rays Via Photoelectric Interactions.
, The ______ Sinus(Es) Sit(S) Directly Beneath The Sella Turcica.
A. Ethmoidal
B. Frontal
C. Maxillary
D. Sphenoidal
Ans: D. Sphenoidal
Feedback: The Sphenoidal Sinuses Are Usually Paired (2) And Are In The Body Of The
Sphenoid Bone. The Sinuses Lie Below The Sella Turcica And Extend Between The Posterior
Ethmoidal Air Cells And The Dorsal Sellae.
The _____ Vein Is Best Suited For Venipuncture.
A. Basilic
B. Popliteal
C. Femoral
D. Right Internal Jugular
Ans: A. Basilic
Feedback: The Basilica And Cephalic Veins Are The 2 Most Common Sites Of Venipuncture.
The Popliteal And Femoral Veins Are In The Lower Extremities, Which Are Harder To Access And
Should Only Be Used In Cases Of Emergency. The Right Internal Jugular Vein Is More Commonly
Used For Central Venous Access And Is Not A Common Site For Venipuncture.
Questions & Verified Answers | Comprehensive ARRT Certification
Review Guide | Latest Diagnostic Imaging Prep for Guaranteed Success
All Of The Following Except ___ Will Result In An Increase In Aec Response Time.
A. Decreasing The Kvp
B. Increasing The Focal Spot Size
C. Increasing The Part Thickness
D. Increasing The Sid
Ans: B. Increasing The Focal Spot Size
Feedback: Increasing The Focal Spot Size Does Not Change The Aec Response Time It Affects
The Spatial Resolution. Decreasing The Kvp Increases The Exposure Time Because More Photons
Are Absorbed, Resulting In Fewer Reaching The Cell(S). The Same Is True For Increasing Part
Thickness. Increasing The Sid Results In A Longer Exposure Time Because Of Beam Divergence
And The Decrease In The Number Of Photons Reaching The Cell(S).
Of The Following, The Greatest Attenuator Of X-Rays Is:
A. Air
B. Bone
C. Muscle
D. Fat
Ans: B. Bone
Feedback: Air Allows For The Greatest Transmission Of X-Rays. The Probability Of Bone And
Soft Tissue (Muscle, Fat) Attenuating X-Rays Via Compton Interactions Is Roughly The Same.
However, Since Bone Has A Higher Effective Atomic Number Than Soft Tissue, Bone Attenuates
More X-Rays Via Photoelectric Interactions.
, The ______ Sinus(Es) Sit(S) Directly Beneath The Sella Turcica.
A. Ethmoidal
B. Frontal
C. Maxillary
D. Sphenoidal
Ans: D. Sphenoidal
Feedback: The Sphenoidal Sinuses Are Usually Paired (2) And Are In The Body Of The
Sphenoid Bone. The Sinuses Lie Below The Sella Turcica And Extend Between The Posterior
Ethmoidal Air Cells And The Dorsal Sellae.
The _____ Vein Is Best Suited For Venipuncture.
A. Basilic
B. Popliteal
C. Femoral
D. Right Internal Jugular
Ans: A. Basilic
Feedback: The Basilica And Cephalic Veins Are The 2 Most Common Sites Of Venipuncture.
The Popliteal And Femoral Veins Are In The Lower Extremities, Which Are Harder To Access And
Should Only Be Used In Cases Of Emergency. The Right Internal Jugular Vein Is More Commonly
Used For Central Venous Access And Is Not A Common Site For Venipuncture.
