CT Image Production - Post-course Assessment
Number of pixels in the matrix
"Matrix size" in computed tomography (CT) refers to which of the following? Size of pixels in the matrix Number of pixels in the matrix Physical dimensions of the matrix Brightness levels in the matrix
This is a HIPAA violation
A liver biopsy is scheduled for an administrative assistant who works in the radiology department. A technologist sees their name on the schedule and arranges to have all technologists in the department sign a "Get Well Soon" card. Is this a Health Insurance Portability and Accountability Act (HIPAA) violation? This is a HIPAA violation This is not a HIPAA violation This is a HIPAA violation only if the technologists share information about the procedure with non-radiology staff This is a HIPAA violation only if the technologist views the results of the procedure
Volume scanning
A new computed tomography (CT) protocol calls for imaging the entire Circle of Willis in one x-ray exposure in one tube rotation. What scanning mode would meet this requirement? Axial scanning Helical scanning Volume scanning
Spatial resolution
A patient brought to the radiology department is experiencing knee pain and is suspected of having a fracture of the tibial plateau. If the fracture line is very small, the visibility of the fracture might be limited by what characteristic of the computed tomography (CT) scanner? Contrast resolution Spatial resolution Temporal resolution Linearity
This is not a HIPAA violation
A radiography department uses a shared computer for electronic medical record (EMR) access that does not require a passcode for sign-in. Is this a violation of Health Insurance Portability and Accountability Act (HIPAA) law? This is not a HIPAA violation This is a HIPAA violation only if the computer is accessed by a non-employee This is a HIPAA violation only if the computer is accessed by a non-employee and data is shared with a third party This is a HIPAA violation
Lung
A region-of-interest (ROI) indicating an average Hounsfield unit (HU) of -697 mostly likely corresponds to which of the following? Blood Water Lung Bone
Fatty tumor
A region-of-interest (ROI) placed on the parotid abnormality in this image produced a Hounsfield unit (HU) reading of -48. This abnormality is most likely a: Calcified neoplasm Fatty tumor Fluid-filled cyst Hematoma (blood)
Pixel
A single picture element in a computed tomography (CT) image is referred to as a: Voxel Pixel Slice Projection
This is a HIPAA violation
A technologist reviews a patient's electronic medical record (EMR) for evidence of a gadolinium allergy prior to performing a scan with contrast. Is this a Health Insurance Portability and Accountability Act (HIPAA) violation? This is a HIPAA violation This is not a HIPAA violation This is a HIPAA violation only if the technologist discusses the gadolinium allergy with the patient This is a HIPAA violation only if the patient has no record of a gadolinium allergy
Brightness of the displayed image Center point of Hounsfield values in the displayed image
Adjusting the window level of a computed tomography (CT) image will affect which two of the following? (Select two) Brightness of the displayed image Contrast of the displayed image Center point of Hounsfield values in the displayed image Total number of Hounsfield values in the displayed image
Motion artifact (Glucagon stops peristalsis)
Administering glucagon during computed tomography (CT) abdomen imaging can minimize what type of artifact? Ring artifact Beam hardening Motion artifact Cone beam artifact
Multiplanar reformation
After completing a routine scan of the chest, the radiologist requests a sagittal image series with 5 mm slices. This request can be completed using which of these imaging techniques? Retrospective reconstruction Multiplanar reformation Histogram analysis Volume rendering
Rescanning the patient
After performing a thoracic spine scan for trauma, the radiologist requests images to include the entire lumbar spine as well. The raw data is still saved on the computed tomography (CT) scanner. This will require: Retrospectively reconstructing images with a different display field-of-view (DFOV) Retrospectively reconstructing images with a different algorithm Retrospectively reconstructing images with a different scan field-of-view (SFOV) Rescanning the patient
Reconstructing thicker slices
After scanning a very large patient, the radiologist requests new images with decreased image noise. How can this be accomplished? Reconstructing with more edge-enhancement Adjusting the window width (WW) Adjusting the window level (WL) Reconstructing thicker slices
Missing projections Fast pitch Fast rotation time
Aliasing artifact is caused by which three of the following? (Select three) Missing projections Fast pitch Fast rotation time Large voltage (kVp)
Shaded surface display
An orthopedic surgeon needs to review 3D images of a femur fracture. Which rendering technique will offer a 3D view of the bone without the need to process the entire data set? Volume rendering Maximum intensity projection Shaded surface display Minimum intensity projection
Bone algorithm
Assuming that all other factors remain constant, which reconstruction algorithm is expected to result in the most image noise? Standard algorithm Soft tissue algorithm Brain algorithm Bone algorithm
0.8
Calculate the pitch for a scan using the following variables. Acquisition thickness = 1 mm Beam width = 10 mm Rotation time = 0.5 seconds Tube current = 300 mA Table movement = 8 mm 0.4 0.8 1 8
Out-of-field artifact
Centering the patient too far to the left or right on the computed tomography (CT) gantry is most likely to result in what artifact? Beam hardening artifact Motion artifact Ring artifact Partial volume averaging Out-of-field artifact
X-axis Z-axis
Changing the center of a coronal image requires changes to which two data coordinates? (select two) X-axis Y-axis Z-axis
Y-axis
Changing the slice thickness of a coronal reformation changes the dimensions of the image data in what axis? X-axis Y-axis Z-axis X-, Y-, and Z-axes
X-axis
Changing the slice thickness of a sagittal reformation changes the dimensions of the image data in what axis? X-axis Y-axis Z-axis X-, Y-, and Z-axes
Increased number of image slices
Compared to a 2 mm reconstruction slice thickness, a 1 mm slice thickness will result in which of the following? Decreased image noise Decreased spatial resolution Increased number of image slices Increased spatial resolution
Decreased scan time Decreased patient dose Decreased spatial resolution
Compared to a pitch of 1, a pitch of 1.137 will demonstrate what three differences? (Select three) Decreased scan time Decreased rotation time Decreased image noise Decreased patient dose Decreased spatial resolution
Increased dose Increased spatial resolution
Compared to a pitch of 1.2, a pitch of 1 will demonstrate what two differences? (Select two) Increased image noise Increased dose Increased spatial resolution Decreased total scan time
Noise Sharpness
Compared to a soft tissue algorithm, a bone algorithm will have more: (Select two) Noise Brightness Sharpness Contrast
Increased spatial resolution
Computed tomography (CT) imaging of the temporal bones often calls for a very low pitch (less than 1). What is one effect of using a pitch of less than one? Increased temporal resolution Increased spatial resolution Increased contrast resolution Increased CT number accuracy
0.5 mm x 32 rows
Consider a 32-slice computed tomography (CT) scanner with a non-uniform detector array. The thinnest detector rows are 0.5 mm. Which acquisition configuration is not possible? 0.5 mm x 8 rows 0.5 mm x 32 rows 1 mm x 8 rows 1 mm x 16 rows
Increased brightness
Consider a computed tomography (CT) image that was initially displayed with a 300-window width (WW) and a 30-window level (WL). Decreasing the window level from 30 to 0 will have what effect on the image? Decreased brightness Increased brightness Increased contrast Decreased contrast
1 mm x 8 rows
Consider a new computed tomography (CT) protocol that requires high-resolution images produced in the helical acquisition mode. Which of the following acquisition configurations would best meet this need? 1 mm x 8 rows 2 mm x 8 rows 3 mm x 5 rows 4 mm x 4 rows
The average of all tissues will be displayed by the pixel
Consider a voxel that includes these tissue types: lung, bone, fat, and muscle. What computed tomography (CT) number will be displayed by the pixel in the reconstructed image? Tissue with the maximum CT number will be displayed by the pixel Tissue with the minimum CT number will be displayed by the pixel The average of all tissues will be displayed by the pixel Total of all tissues will be displayed by the pixel
Water phantom average = 1.0 Hounsfield units (HU) Water phantom standard deviation = 3.1 Line pairs = 14 lp/cm
Consider the following scenario: Several quality control (QC) tests were performed on four different scanners. Based on the results of these tests, which scanner has the highest spatial resolution? Water phantom average = 1.0 Hounsfield units (HU) Water phantom standard deviation = 3.1 Line pairs = 14 lp/cm Water phantom average = - 0.5 Hounsfield units (HU) Water phantom standard deviation = 1.2 Line pairs = 12 lp/cm Water phantom average = -11 Hounsfield units (HU) Water phantom standard deviation = 0.2 Line pairs = 13 lp/cm Water phantom average = 2.0 Hounsfield units (HU) Water phantom standard deviation = 2.0 Line pairs = 10 lp/cm
Distinguish between parts with similar physical densities
Contrast resolution is defined as the ability to: Visualize small parts Distinguish between parts with similar physical densities Produce still images of objects in motion Produce computed tomography (CT) images without image noise
Less than 1
During helical scanning, if the table moves a shorter distance than the width of the beam the pitch will be: Less than 1 Equal to 1 Greater than 1
Interpolation
During spiral scanning, attenuation data from the patient is first organized in a helical pattern. The process of converting this information into axial sections is accomplished through: Filtration Convolution Back-projection Interpolation
Informed consent
Failure to obtain which type of consent can lead to a Health Insurance Portability and Accountability Act (HIPAA) violation? Verbal consent Informed consent General consent Implied consent
Temporal resolution
Half-scan algorithms improve which image quality variable in computed tomography (CT)? Spatial resolution Contrast resolution Temporal resolution CT number accuracy
Increased number of views used in each slice The longest rotation time is preferred because longer rotation times result in more projections through the patient and better spatial resolution.
How would increasing the rotation time increase spatial resolution? Increased number of views used in each slice Increased pitch of the helical scan Increased dose to the patient Increased display field-of-view (DFOV)
Missing views in the scan data
If the pitch is greater than one, it results in: Overlap in the scan data Missing views in the scan data Overlap and missing views in the scan data Scan data without overlap or missing views
Equipment failure Patient movement during the exposure Incorrect patient positioning
Image artifact in computed tomography (CT) can be caused by which three of the following? (Select three) Equipment failure Patient movement during the exposure Incorrect patient identification Incorrect patient positioning Incorrect contrast injection rate
Multiplanar reformation (MPR) Long-term storage in the archive servers Radiologist interpretation
Information within the display field-of-view (DFOV) is used for what three functions? (Select three) Multiplanar reformation (MPR) Retrospective reconstruction Long-term storage in the archive servers Radiologist interpretation
Axial and sagittal
Measuring a pathology in the x-axis could be accomplished with which of the following imaging planes? Sagittal only Axial and sagittal Axial and coronal Axial only
Beam hardening artifact
Metal artifact on a computed tomography (CT) image is a form of: Cone beam artifact Ring artifact Beam hardening artifact Out-of-field artifact
X-axis Y-axis
Modifying the center of an axial image during retrospective reconstruction requires changes to which two data coordinates? (Select two) X-axis Y-axis Z-axis
Breathing Peristalsis
Motion artifact in a computed tomography (CT) image may be the result of which two of the following? (Select two) Metallic implants Breathing Peristalsis Miscalibrated detectors
Helical mode
Pitch is an acquisition variable defined for which acquisition mode? Axial mode Helical mode Volume mode
Scan data
Raw data is also called: Scan data Image data Reconstructed data Processed data
Computer system
Reconstruction of raw data into image data occurs within which component of the computed tomography (CT) system? Detector array Data acquisition system Computer system Output devices
Beam hardening
Significant absorption of the x-ray beam through petrous portions of the cranium can result in a streaking artifact caused by: Motion Beam hardening Cone beam artifact Partial volume averaging
CT number for air
Some pathologies of the chest may be visualized by rendering a multiplanar reformation as minimum intensity projections. In a minimum intensity projection, what computed tomography (CT) number will be displayed for a voxel that contains portions of lung, air, and a contrast-filled artery? CT number for lung CT number for contrast CT number for air Average CT number within the voxel
Patient motion
The artifact visible in the following image is a result of: Patient motion Beam hardening Detector failure
2500 window width (WW) and 600 window level (WL)
The bones of the cranium are best visualized with which window setting? 80 window width (WW) and 30 window level (WL) 400 window width (WW) and 40 window level (WL) 1800 window width (WW) and -600 window level (WL) 2500 window width (WW) and 600 window level (WL)
Out-of-field artifact
The bright areas on the edges of the following image are an example of: Beam hardening artifact Motion artifact Ring artifact Out-of-field artifact Partial volume averaging
Hounsfield units (HU)
The contrast resolution of a computed tomography (CT) system is recorded with which of the following units? Line pairs per centimeter Hounsfield units (HU) Electron volts Milliamperage (mA)
Increase the window width (WW)
The following image shows excessively high contrast. How could the contrast be improved? Increase the window level (WL) Decrease the window width (WW) Decrease the window level (WL) Increase the window width (WW)
Creating the reformation from very thick axial image data
The following sagittal reformation of the cervical spine shows less detail than expected. Based on the appearance of the image, the lessened detail may be a result of which of the following? Creating the reformation from images reconstructed in the standard algorithm Creating the reformation from images from very thin axial image data Creating the reformation from very thick axial image data Creating the reformation from images reconstructed in the bone algorithm
Within the scan field-of-view (SFOV)
The patient's anatomy that is saved as raw data in the computed tomography (CT) system includes any portion of the patient that is: Within the display field-of-view (DFOV) Within the scan field-of-view (SFOV) Outside of the scan field-of-view (SFOV) Within the scanner gantry
Unacceptable CT number accuracy
The phantom pictured contains only water. Based on the region of interest (ROI) readings, what problem should be reported to the medical physicist? Unacceptable linearity Unacceptable CT number accuracy Unacceptable uniformity Unacceptable spatial resolution
Measure and convert transmitted radiation into an electrical signal
The purpose of the detector array in computed tomography (CT) is to: Convert electrical signals into raw data Measure and convert transmitted radiation into an electrical signal Reconstruct raw data into image data Display and store image data
Decreased patient dose Increased scan time? Increased beam coverage
What are three potential benefits of increasing the computed tomography (CT) acquisition thickness from 1 mm to 2 mm? (Select three) Decreased patient dose Increased spatial resolution Increased beam coverage Increased scan time
Beam hardening artifact
What artifact is visible in the posterior portion of the patient's abdomen in the following image? Cone beam artifact Ring artifact Beam hardening artifact Partial volume averaging Out-of-field artifact
Y-axis position
What axis position has changed in the following series of coronal images? X-axis position Y-axis position Z-axis position
Pitch = 1.2, Reconstruction Thickness = 1.0, Tube voltage = 140, Matrix Size = 1024 x 1024
What combination of variables will result in the most detailed images? Pitch = 0.9, Reconstruction Thickness = 5.0, Tube voltage = 110, Matrix Size = 512 x 12 Pitch = 1.0, Reconstruction Thickness = 3.5, Tube voltage = 120, Matrix Size = 512 x 12 Pitch = 1.1, Reconstruction Thickness = 2.0, Tube voltage = 130, Matrix Size = 1024 x 1024 Pitch = 1.2, Reconstruction Thickness = 1.0, Tube voltage = 140, Matrix Size = 1024 x 1024
Axial mode
What computed tomography (CT) data acquisition mode is represented in the following illustration? Axial mode Helical mode Volume mode
Pre-patient collimators
What controls the physical size of the x-ray beam? Data acquisition system Pre-patient collimators Array processor X-ray generator
All data acquisition techniques produce a volume of data
What data acquisition technique produces a three-dimensional volume of anatomical data? Axial scanning Helical scanning Volume scanning All data acquisition techniques produce a volume of data
Convolution
What data process is used to smooth or sharpen image data for better visualization of the desired anatomy? Interpolation Windowing Convolution Back-projection
Back-projection filter
What difference in image processing accounts for the visible difference between the following two images of the brain? Window width (WW) Window level (WL) Back-projection filter Reconstructed algorithm
Decreases noise
What effect does increasing the rotation time have on image noise in computed tomography (CT) scans? Increases noise Decreases noise No change in noise
Averaging multiple tissue types into one voxel
What error causes partial volume averaging? Averaging multiple tissue types into one voxel Using a large display field-of-view (DFOV) Using a large scan field-of-view (SFOV) Miscalibration of a detector element
Increased spatial resolution
What is one advantage of using a small reconstruction slice thickness? Decreased image noise Increased spatial resolution Decreased image data Decreased patient dose
Failed detector element
What is the cause of the large semi-circle overlaying the patient's liver in the following image? Patient motion Failed detector element Large pitch ratio Arteriovenous malformation
Display and store image data
What is the function of output devices in a computed tomography (CT) imaging system? Measure and convert transmitted radiation into an electrical signal Convert electrical signals into raw data Reconstruct raw data into image data Display and store image data
Increased noise
What is the impact of using a bone algorithm on image noise compared to a standard algorithm? Increased noise Decreased noise No change in noise
Decreased spatial resolution
What is the main disadvantage of using thick detector rows? Decreased spatial resolution Increased patient dose Increased scan time Decreased contrast resolution
The image was reformatted from thick axial images
What is the most likely cause of the blurry appearance in the following coronal reformation of the abdomen? The image was reformatted from an edge-enhancing algorithm The image was reformatted from thick axial images The image was reformatted into thick coronal images The image was displayed with the wrong window width (WW) and window level (WL)
Greater than 1
What is the pitch in the following illustration? Less than 1 Equal to 1 Greater than 1
Convert electrical signals into raw data
What is the principal function of the data acquisition system (DAS) in computed tomography (CT)? Measure and convert transmitted radiation into an electrical signal Reconstruct raw data into image data Convert electrical signals into raw data Display and store image data
Possible HIPAA violations due to breaches
What is the risk associated with texting patient information using non-secure messaging apps? Reduced efficiency in communication Possible HIPAA violations due to breaches Quick sharing of inaccurate information Misinterpretation of medical information
Patient motion
What is the streaking a result of in the following image? Metal artifact in the exposure field Failed detector element Use of thick axial slices Patient motion
Patient motion
What is the streaking a result of in the following image? Patient motion Beam hardening Detector miscalibration Partial volume averaging
Metal artifact in the exposure field
What is the streaking around the patient's right shoulder a result of in the following image? Failed detector element Use of thick axial slices Patient breathing Metal artifact in the exposure field
Linearity
What quality control (QC) test in computed tomography (CT) creates a graph of attenuation coefficients with the CT number produced during the scan? Accuracy Uniformity Contrast resolution Linearity Spatial resolution
Linearity
What quality control (QC) test in computed tomography (CT) ensures that the CT numbers increase proportionally with increasing physical density? Accuracy Linearity Uniformity Contrast resolution Spatial resolution
Maximum intensity projection
What rendering technique was used to create the following axial reformation? Shaded surface display Minimum intensity projection Maximum intensity projection Volume rendering
Histogram
What term describes the post-processing procedure in the following image? Region-of-interest (ROI) Histogram Calcium score Ejection fraction
Beam hardening artifact Ring artifact
What two computed tomography (CT) artifacts are demonstrated in the following image? (Select two) Partial volume averaging Beam hardening artifact Ring artifact Out-of-field artifact
Bone algorithm Edge-enhancing algorithms
What two types of reconstruction algorithms should be used to view bony injuries to the thorax? (Select two) Standard algorithms Smoothing algorithms Bone algorithm Edge-enhancing algorithms
Equal to 1
What will the pitch be if the table moves equal distance to the width of the beam when using the spiral acquisition mode? Less than 1 Equal to 1 Greater than 1
There will be no overlap or missing views in the scan data
When considering the following variables, which statement describes how the resulting views comprise the scan data? Pitch = 1 Acquisition thickness = 1.5 mm Rotation time = 1 second Maximum tube current = 300 milliamperage (mA) There will be additional views of the same positions in the scan data There will be missing views in the scan data There will be overlap and missing views in the scan data There will be no overlap or missing views in the scan data
Slice interval Slice thickness
When creating a multiplanar reformation, which of the following parameters must be set by the technologist? (Select two) Scan field-of-view (SFOV) Reconstruction algorithm Slice interval Slice thickness
Spatial resolution
When reviewing a computed tomography (CT) of the bony pelvis, the technologist notices that the trabecular bone looks blurry. What is this quality control issue related to? Contrast resolution CT number accuracy Spatial resolution Linearity Uniformity
Using electrocardiogram (EKG) gating Providing breathing instructions
When scanning a patient's chest, motion artifact can be reduced by which two of the following? (Select two) Using electrocardiogram (EKG) gating Placing the patient's arms above their head Providing breathing instructions Correctly calibrating the detector array
Increase
When the display field-of-view (DFOV) is increased, the pixel size will: Increase Decrease Remain unaffected
CT numbers above 230
When using a 400 window width (WW) and 30 window level (WL), what computed tomography (CT) pixel intensities will be displayed as white? CT numbers above 230 CT numbers above 430 CT numbers below -170 CT numbers below 430
0.625 mm
Which acquisition thickness will result in the highest spatial resolution? 0.625 mm 1.25 mm 2.5 mm 3.75 mm
Facial bones
Which body section is best demonstrated with a window width (WW) of 2500 and window level (WL) of 600? Brain Facial bones Liver Spinal cord
Helical scanning
Which computed tomography (CT) scanning technique collects scan data while the patient table is in motion? Axial scanning Helical scanning Volume scanning
Standard algorithm
Which of the following algorithms will yield 3D images with the least amount of image noise? Bone algorithm Lung algorithm Edge-enhancing algorithm Standard algorithm
Beam hardening artifact
Which of the following computed tomography (CT) artifacts is caused by a significant increase in the average energy of the x-ray beam? Motion artifact Ring artifact Partial volume averaging Out-of-field artifact Beam hardening artifact
Axial scanning Sequential acquisition mode is another way of describing the axial scan mode. In this mode, the patient couch or table only moves between x-ray exposures. This is very different from helical scanning in which the X-ray exposure occurs while the patient couch is in motion.
Which of the following computed tomography (CT) scanning methods is also called sequential scanning? Axial scanning Helical scanning Volume scanning
3 mm x 7 rows
Which of the following detector configurations has the most total beam coverage? 1 mm x 16 rows 2 mm x 8 rows 4 mm x 4 rows 3 mm x 7 rows
Image (B)
Which of the following images is displayed with a window width (WW) of 2500 and window level (WL) of 600? Image (A) Image (B) Image (C) Image (D)
Wide x-ray beam
Which of the following increases cone beam artifact? Large display field-of-view (DFOV) Large matrix Wide x-ray beam Large exposure technique
2048 x 2048
Which of the following matrix sizes will have the smallest pixels? 1024 x 1024 512 x 512 256 x 256 2048 x 2048
Miscalibration of a detector element
Which of the following may result in a ring artifact on a computed tomography (CT) image? Averaging multiple tissue types into one voxel Using a large display field-of-view (DFOV) Leaving the patient's arms in the exposure field Miscalibration of a detector element
Bone algorithm with 0.315 mm slices
Which of the following reconstruction protocols will result in the most image noise? Soft tissue algorithm with 0.625 mm slices Soft tissue algorithm with 1.25 mm slices Bone algorithm with 0.315 mm slices Bone algorithm with 2.5 mm slices
600 milliamperage (mA), 0.3 second rotation time, 1.0 mm slices, bone algorithm The faster images can be acquired, the better the temporal resolution.
Which of the following scans will have the best temporal resolution? 600 milliamperage (mA), 0.3 second rotation time, 1.0 mm slices, bone algorithm 500 milliamperage (mA), 0.4 second rotation time, 2.0 mm slices, standard algorithm 400 milliamperage (mA), 0.5 second rotation time, 3.0 mm slices, bone algorithm 300 milliamperage (mA), 1.0 second rotation time, 4.0 mm slices, standard algorithm
Extends longitudinally through the scanner Represents data coordinates in terms of anterior and posterior
Which of the following statements accurately describes the orientation of the y-axis in computed tomography (CT) imaging? (Select two) Extends vertically across the scanner Extends longitudinally through the scanner Represents data coordinates in terms of anterior and posterior Represents data coordinates in terms of superior and inferior
Axial Sagittal
Which of the following two imaging planes would allow for measuring the dimensions of a pathology in the Y-axis? (select two) Axial Coronal Sagittal
Window width = 900, window level = 40
Which of the following windowing options will produce a displayed image with the longest scale of contrast in a computed tomography (CT) image of the abdomen? Window width = 450, window level = 45 Window width = 300, window level = 100 Window width = 900, window level = 40 Window width = 40, window level = -30
Increased matrix size
Which procedural change will increase the potential spatial resolution in a computed tomography (CT) image? Increased detector size Increased pitch Increased reconstruction thickness Increased matrix size
1 mm x 16 rows 2 mm x 8 rows 4 mm x 4 rows
Which three of the following detector configurations have the same total beam coverage? (Select three) 0.5 mm x 10 rows 1 mm x 16 rows 2 mm x 8 rows 4 mm x 4 rows 3 mm x 5 rows
Individuals can maintain coverage for pre-existing conditions Coverage cannot be denied for conditions covered under previous health insurance Individuals retain their medical insurance when they change jobs
Which three of the following scenarios are included in The Health Care Access, Portability, and Renewability provision of The Health Insurance Portability and Accountability Act (HIPAA)? (Select three) Individuals can maintain coverage for pre-existing conditions Insurance coverage is guaranteed without employment Coverage cannot be denied for conditions covered under previous health insurance Individuals retain their medical insurance when they change jobs
The patient table is in constant motion The patient data is collected in one large spiral pattern
Which two of the following statements correctly describe the process of data acquisition used in helical scanning? (Select two) The patient table moves only between x-ray exposures The patient table is in constant motion The patient data is acquired in one rotation of the x-ray tube The patient data is collected in one large spiral pattern
Increased kilovoltage peak (kVp) Increased milliamperage (mA)
Which two of the following variable changes are expected to improve the contrast resolution of computed tomography (CT) scans? (Select two) Increased kilovoltage peak (kVp) Increased matrix size Increased milliamperage (mA) Increased display field-of-view (DFOV)
A patient is refused access to their medical records after being banned from the primary care physician's office A physician's office is unable to provide a report on who has viewed a patient's electronic medical records (EMR)
Which two scenarios are a violation of federal law on sharing health information? (Select two) A husband is refused access to his wife's medical records since he has not been identified as an authorized user A patient is refused access to their medical records after being banned from the primary care physician's office An individual views her personal radiology reports on the organization's electronic medical record (EMR) system A physician's office is unable to provide a report on who has viewed a patient's electronic medical records (EMR)
Digital matrix size
Which variable has changed in the following set of coronal images? Reconstruction slice thickness Digital matrix size Acquisition thickness Window level
