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WorksheetsCh 25 Radiography
Total questions: 19
Worksheet time: 10mins
After a radiograph of the hip in the translateral projection is completed, the final image is judged by one of the radiographers as marginally acceptable, as it might show the acetabular rim and femoral head. The logical correct action to take would be to
present the image to a radiologist known to be “popular” with technologists
repeat the image to obtain better image quality
present the image to a visiting radiologist who is there for the day
send the image for interpretation but make a note of the image in the quality control file of images.
After a radiograph of the lumbar spine (AP) is completed, the final image reveals a S# of 758. Your correct image analysis leads you to
increase the mAs by 10 percent and repeat the image
none of the above
increase the kVp by 4 kVp and repeat the image
decrease the SID to 36” and repeat the image
After completing a chest radiograph on a female patient with large pendulous breasts, the final image demonstrates underexposure and noise and a loss of recorded detail in the lung bases. The professional radiographer would
repeat the chest radiograph in the anterioposterior (AP) projection
increase the mAs and tell the patient to hold their breath deeper
politely ask the patient to separate her breasts as she approaches the chest board and repeat the exam in the PA projection.
increase SID to improve resolution
After completing a lateral cervical spine on a severely injured trauma patient in the ER, you notice that there is a faint silhouette of the spine at the level of C7–T1. This area of the image is noisy and the visibility of detail is compromised. The responsible approach to this problem would be to
write a notation of the circumstances for the radiologist, and send the image for interpretation.
repeat the projection with an increase in mA
reposition the patient to an oblique angle and repeat the exposure
adjust the contrast on your review monitor to show the area better, and send to PACS
All of the following are related except one. Select the choice not related to the others
image processing
image analysis
image acquisition
image transmission
Factors that affect the shape of the acceptance limit curve of medical images include all of the following EXCEPT
department location
department quality standards
equipment condition
positioning abilities of the radiographer
Geometric image quality factors include
1. Focal spot selection
2. SID
3. grid ration
4. filtration thickness
5. OID
6. Tube angulation
7. Part thickness
8. Receptor resolution
1, 2, 3, 4, and 7 only
3, 4, 7, and 8 only
1, 2, 4, and 7 only
1, 2, 5, 6, 7, and 8 only
If the image quality acceptance limits are narrow
the department would be a good candidate for students
image repeat rates may be high
the radiography staff would not expect to need regular in-services
patient dosages would be unaffected
Image quality is primarily the domain of the
x-ray service engineer
PACS administrator
medical physicist
radiographer
Producing an acceptable radiograph requires consideration of
image processing
technical factor selection
all of the above
pathology
Upon analysis of a chest radiograph taken on an asymptomatic, female patient, the radiographer notices that there is an uneven visualization over both lung bases. One lung base is significantly underexposed compared to the other. In an effort to determine the possible cause(s), a logical strategy to take would be to
make a note for the radiologist that you cannot explain the opacification, as the patient is asymptomati
retake the image on expiration
inspect the AEC detectors and retake the image
ask the patient if she has had a previous breast surgery
Using digital detector technologies with flat screen displays, image quality acceptance is generally determined by its
procedural issues such as positioning
brightness and contrast
quantum noise levels
both b and c
Visibility of detail quality factors include all of the following EXCEP
radiographic positioning
x-ray tube focal spot size
radiographic grids
image contrast
What process is commonly used to create a hard copy of digital images?
laser printing
dry chemistry processing
wet chemistry processing
storing the data on portable storage devices
When many radiographic factors are acting upon one other, it is known as a(n) ___________ problem
professional
ethical
pyramid
procedural
Which of these activities would be inconsistent with the “scope of practice” of the radiographer?
btaining additional patient information to add to an existing patient history that was taken by a nurse
identify a pneumonia on a chest radiograph for an ER physician
suggesting methods to improve fluoroscopic image quality to a radiologist
repeating a suboptimal radiograph after determining the EI# was too low
Which phase of the imaging process includes control of factors such as IR exposure, contrast, spatial resolution, and distortion?
image analysis
image display
image processing
image acquisition
Which phase of the imaging process incorporates the concepts of spatial resolution, brightness, and contrast and dynamic range?
image display
image processing
image acquisition
image analysis
Which phase of the imaging process is unique to each imaging modality?
image analysis
image archiving
image acquisition
image display
