Ramer · Alavi Nuclear Medicine Technology

9 Respiratory System Scintigraphy 8914) Which of the following describe correct procedures forinjection of 99m Tc MAA for a perfusion lung study?a. injection should be made through an existing IV lineif possibleb. ensure that a minimum of 800,000 MAA particles areinjectedc. small amount of blood should be withdrawn into thesyringe to ensure venous access before injectiond. patient should be in the supine position15) Advantages of using 81m Kr for ventilation lung scansinclude:a. ability to perfectly match perfusion and ventilationpositioningb. short half life decreases exposure to technologistsif patient removes maskc. ventilation and perfusion studies can be acquiredsimultaneouslyd. all of the abovee. a and b only16) It is advisable to wait one half hour following injectionof 99m Tc MAA before scanning to allow time for radiopharmaceuticalclearance from the circulation.a. trueb. false17) Increased risk of pulmonary embolism is associatedwith:a. smokingb. use of oral contraceptivesc. recent surgeryd. all of the abovee. a and c only