ARRT Radiography Flashcards

In which of the following is a lumbar puncture most likely to occur?

Answer: at the level of L 3-4

A lumbar puncture (spinal tap) is most commonly performed between the L3-L4 or L4-L5 vertebrae. This specific location is chosen because the spinal cord typically ends around the L1-L2 level in adults, making punctures below this point safer. Performing the procedure at L3-L4 minimizes the risk of spinal cord injury.

Which of the following drug delivery systems falls under the definition of "parenteral"?

Answer: other, except alimentary

Parenteral drug administration refers to routes that bypass the gastrointestinal (alimentary) tract. This includes various methods such as injections (intravenous, intramuscular, subcutaneous), as well as other non-oral routes like topical, transdermal, or inhaled. Therefore, 'other, except alimentary' accurately encompasses the diverse drug delivery systems defined as parenteral.

The relationship between the height of the lead strip and the grid ratio is known as this.

Answer: distance between lead strips

Grid ratio is defined as the height of the lead strips divided by the distance between them (Grid Ratio = h/D). Therefore, the distance between the lead strips is a critical component in determining the grid ratio. A smaller distance between strips for a given height results in a higher grid ratio, which improves scatter cleanup but requires more precise alignment.

Which clinical symptom DOES NOT relate to acute abdominal discomfort?

Answer: extreme diarrhea

While diarrhea can accompany some abdominal issues, 'extreme diarrhea' is not typically considered a primary or defining symptom of acute abdominal discomfort in the same way as a rigid abdomen, nausea/vomiting, or extreme thirst. Acute abdominal discomfort often presents with sudden, severe pain, guarding, and systemic signs like nausea/vomiting, or signs of hypovolemia like extreme thirst.

What properties will the photons have when the kVp of an X-ray beam increases?

Answer: shorter wavelength

Increasing the kilovoltage peak (kVp) in an x-ray beam increases the energy of the individual photons. Higher energy photons have shorter wavelengths and higher frequencies, making them more penetrating. This relationship is inversely proportional: as energy increases, wavelength decreases.

How should a radiographer respond to an adult patient who is having a cardiac or respiratory arrest?

Answer: call a code and begin CPR

In the event of a cardiac or respiratory arrest, the immediate and most critical actions for a radiographer are to simultaneously call for emergency medical assistance (call a code) and initiate cardiopulmonary resuscitation (CPR). Rapid intervention with both steps maximizes the patient's chances of survival by ensuring professional help is en route while maintaining vital functions.