Medical Imaging Technology
Review Questions
Course Introduction
Medical Imaging Technology explores the principles, techniques, and applications of modern imaging modalities used in clinical diagnosis and research. The course covers foundational concepts of radiography, computed tomography (CT), magnetic resonance imaging (MRI), ultrasound, and nuclear medicine, emphasizing the physics behind image formation, instrumentation, image processing, and interpretation. Students will learn about safety protocols, regulatory standards, and the role of imaging in patient care, while also gaining insights into emerging technologies and advancements shaping the future of medical diagnostics.
Recommended Textbook
Digital Radiography An Introduction for Technologists 1st Edition by Euclid Seeram
Available Study Resources on Quizplus
10 Chapters
500 Verified Questions
500 Flashcards
Source URL: https://quizplus.com/study-set/323
Page 2
Chapter 1: Digital Radiography: An Overview
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5376
Sample Questions
Q1) As a radiation detector, film-screen cannot show differences in tissue contrast less than 30%.
A)True
B)False
Answer: False
Q2) Since the PACS contains confidential patient data and information, it is essential that they be secured; hence, ____ is of central importance in a digital hospital as well as in a PACS environment.
A) image security
B) diagnostic
C) interface security
D) data security
Answer: D
Q3) The purpose of image compression is to increase storage space and decrease the image transmission time.
A)True
B)False
Answer: False
Q4) Film-based imaging is limited in its ____________________.
Answer: contrast resolution
To view all questions and flashcards with answers, click on the resource link above. Page 3
Chapter 2: Digital Imaging Processing Concepts
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5377
Sample Questions
Q1) The inverse ____________________, denoted by FT -1, is used to transform an image in the frequency domain back to the spatial location domain for viewing by radiologists and technologists.
Answer: Fourier Transform
Q2) Pixels in a digital image represent the information contained in a volume of tissue in the patient.What is this volume called?
A) bit depth
B) voxel
C) spatial resolution
D) pixel
Answer: B
Q3) All digital radiography imaging modalities including CR, flat-panel digital radiography, digital mammography, and digital fluoroscopy, utilize digital image processing as a central feature of their operations.
A)True
B)False
Answer: True
Q4) The third step in digitizing an image is ____________________. Answer: quantization
To view all questions and flashcards with answers, click on the resource link above. Page 4
Chapter 3: Computed Radiography: Physics and Technology
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5378
Sample Questions
Q1) Which of the following refers to the use of several digital operations for pre-processing and post-processing of the CR image data?
A) image acquisition
B) image plate scanning
C) image processing
D) image display
Answer: C
Q2) Which tool provides visual evaluation of high contrast resolution, low contrast resolution, and artifacts, using appropriate QC software?
A) FCR 1 shot Plus System
B) AAPM densitometer
C) Kodak CR System
D) Agfa CR System
Answer: A
Q3) The ____________________, or scanner, is a machine for scanning the exposed IP to render the latent image visible.
Answer: CR reader
Q4) ____________________ involves both sampling the analog signal and quantization.
Answer: Digitization
To view all questions and flashcards with answers, click on the resource link above. Page 5
Chapter 4: Effective Use of Computed Radiography
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5379
Sample Questions
Q1) Because of the increased sensitivity to scattered radiation, the kVp should not exceed ____ for any nongrid radiography, including chest.
A) 20
B) 40
C) 60
D) 80
Q2) ____________________ exposures are dramatically affected by the additional scatter, which may not even be removable by a grid.
Q3) With CR, grid cutoff does not result in a light image, due to the automatic ____________________ of the image.
Q4) Many of the factors that cause low contrast in film-screen systems also cause low contrast in CR images.
A)True
B)False
Q5) Currently, each major vendor uses a unique ____________________ indicator whose values indicate the exposure delivered to the plate.
Q6) With cassette-based PSP systems (CR), ____________________ resolution becomes a bit more complicated.
To view all questions and flashcards with answers, click on the resource link above. Page 6
Chapter 5: Flat-Panel Digital Radiography
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5380
Sample Questions
Q1) Which of the following deals with the efficiency of a detector to convert the x-radiation signal at its entrance window into useful image signal?
A) MTF
B) DQE
C) SNR
D) a-Se
Q2) In imaging applications, because contrast resolution (the ability to resolve small differences in tissue contrast)is mandatory for diagnostic interpretation, ____ is important.
A) low SNR
B) high DQE
C) high SNR
D) low DQE
Q3) Which layer used in the indirect flat-panel digital detector is usually either cesium iodide (CsI)or gradolinium oxysulfide (Gd?O?S)?
A) flat panel
B) thin-film transistor
C) X-ray scintillator
D) amorphous silicon
To view all questions and flashcards with answers, click on the resource link above. Page 7
Chapter 6: Digital Fluoroscopy
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5381
Sample Questions
Q1) ____________________ subtraction involves the digital subtraction of images in time.
Q2) In digital fluoroscopy, the display image receives the video signal from the video camera and with suitable electronics, uses the signal to create the television image.
A)True
B)False
Q3) The energy subtraction operation is based on subtraction of images taken at different ___________________.
Q4) In 1983, the ____________________ replaced the TV camera tube in digital fluoroscopy.
Q5) Conventional fluoroscopy with an image intensifier operates in the low mA mode, and therefore the noise level is usually high.
A)True
B)False
Q6) The range of the numbers in FPDs is defined as the window level and the center of the range is defined as the window width.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 8
Chapter 7: Digital Mammography
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5382
Sample Questions
Q1) Once the image is displayed on a monitor for viewing, the observer can now apply digital image pre-processing techniques.
A)True
B)False
Q2) ____________________ systems are essentially based on two approaches: those that use location of lesions by using the computer to search for abnormal patterns and those that quantify the image features of normal and/or abnormal patterns.
Q3) Data processing uses rule-based methods and other approaches such as discriminant analysis, artificial neural networks, and the decision-tree method to distinguish between normal and abnormal patterns based on features obtained in qualitative interpretation.
A)True
B)False
Q4) ____________________ finds unique features that can be readily distinguished reliably between a lesion and other normal anatomical structures.
Q5) The computer uses image-processing algorithms for enhancement and ____________________ of lesions.
Q6) The ____________________ is central to a DM imaging system.
To view all questions and flashcards with answers, click on the resource link above. Page 9
Chapter 8: Picture Archiving and Communication Systems
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5383
Sample Questions
Q1) DICOM specifies information object ____________________ to address what is contained in images from different imaging modalities.
Q2) ____ became law in the United States in 1996 in an effort to reform health care by addressing several objectives relating to the protection of the patient's health information, standards for such information, fraud and abuse of such information, and so forth.
A) FDA
B) PARCA
C) HIPAA
D) CPSM
Q3) Integration profiles represent a central feature of IHE specifications.
A)True
B)False
Q4) Digital image acquisition represents the final point where data and images are entered into a PACS, and, therefore, it is important that such entries are error-free, since errors generated here can propagate throughout the system, adversely affecting clinical operations.
A)True
B)False
To view all questions and flashcards with answers, click on the resource link above. Page 10
Chapter 9: Medical Imaging Informatics: An Overview
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5384
Sample Questions
Q1) ____ serves to connect systems so that they can exchange data.
A) Integration
B) Interfacing
C) Security
D) Recording
Q2) ____ evolved as the technologies of digital image acquisition, image processing, image display, storage, and communications became widespread and commonplace.
A) Imaging informatics
B) IT security
C) Systems integration
D) Information systems
Q3) ____________________ technology deals with the use of electromagnetic devices and systems for communicating over long distances.
Q4) The use of ____________________ for data exchange in imaging informatics is a mandatory concept for radiologists and technologists, as well as related personnel working in the imaging department to understand.
Q5) The vast array of security risks provides a significant rationale for ____________________ methods.
To view all questions and flashcards with answers, click on the resource link above. Page 11
Chapter 10: Quality Control for Digital Radiography
Available Study Resources on Quizplus for this Chatper
50 Verified Questions
50 Flashcards
Source URL: https://quizplus.com/quiz/5385
Sample Questions
Q1) If the operator interface to the machine is extremely complex, ____________________ errors will increase exponentially.
Q2) Even with a proper erasure cycle, gross overexposure on the previous exam can leave which of the following?
A) fog
B) screen-film
C) artifacts
D) residual signal
Q3) ____ analysis is a time-honored method for assessing and improving quality of imaging operations.
A) Reject
B) Residual
C) Signature
D) DR
Q4) Human errors tend to be systematic and predictable.
A)True
B)False
Q5) When an exam is scheduled for a particular imaging resource, the RIS makes a list of patients available to the DR ____________________ station.
To view all questions and flashcards with answers, click on the resource link above. Page 12