Image Analysis 1B Class 9: Bootcamp Review

The appearance of saturation artifact on a radiograph is caused by:

• Inadequate receptor exposure

• Excessive receptor exposure

• Incorrect positioning of the patient

• Incorrect post-processing

• Small matrix size

Which of the following identifiers are NOT required by law to be included on a radiographic image? ​

• The patient's name

• The patient's date of birth

• The patient's medical record number

• Radiographic marker

• Date of exam

If a radiograph has an "S" number of 12 and demonstrates a loss of soft tissue differentiation, the technologist should consider which of the following actions? ​ ​ (a)  

• Repeat the exposure using less technique
• Repeat the exposure using higher technique
• Repeat the exposure using a higher grid ratio
• Submit the radiograph as is
• Repeat the exposure using a higher technique
• Repeat the exposure using higher technique
• Use a different image receptor
• Go to a different room and repeat the exposure
• Go to a different room and repeat the image

Incomplete erasure of a computed radiography (CR) image receptor may produce an artifact called:  (a)  

• Quantum mottle
• Loss of contrast
• Radiation fog
• Ghost image

A technologist recieved requisitions for a thoracic and lumbar spine on the same patient. The technologist accidently performed the lumbar spine under the wrong accession number. How should this error be corrected? ​ (a)  

• Move exam to the correct accession #
• Repeat exam under the correct accession #
• Annotate image with correct accession #
• No action is needed

A technologist is setting the exposure for a table-top exam. The technique chart calls for 87 kVp but the technologist uses 82 kVp. What will be the most likely effect?

• Saturation artifact

• Quantum mottle

• Loss of contrast

• No visible errors

Which term describes the process of adding brightness and contrast to exposure values within a radiographic image? ​ (a)  

• Lookup Table (LUT) conversion
• Histogram analysis
• Rescaling
• Post-processing
• Pre-processing

The highest exposure reading on a radiograph histogram usually represent areas of: ​ (a)  

• Unattenuated exposure
• Soft tissue
• Calcification
• Collimation
• Bony anatomy

The loss of soft tissue differentiation in this image is caused by: ​ (a)  

• Excessive receptor exposure
• Inadequate receptor exposure
• Incorrect processing
• Large matrix size
• Small matrix size

The requistion is for a 2 view knee exam. The technologist performed a 2 view tib/fib exam. How should this error be corrected? ​ (a)  

• Repeat the exam on the correct body part
• Request a new order to include the tib/fib
• Adjust the order to match exam performed
• No action is needed
• Tear up the original requisition