Imaging Procedures and Protocols
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| show | To reduce the radiation exposure to the lens of the eyes
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| show | 4 to 8
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| Which is a typical injection protocol for a routine examination of the brain? | show 🗑
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| Compared with a cerebral CTA, what parameter must be changed for a cerebral CTV? | show 🗑
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| What is the goal in performing perfusion studies for patients with acute stroke? | show 🗑
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| For what study might data be acquired while the patient is lying prone on the CT table? | show 🗑
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| A volumetric HRCT study refers to a protocol that includes: | show 🗑
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| Why do many protocols for the evaluation of PE scan in the caudal-to-cranial direction? | show 🗑
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| What must happen to a thrombus for it to be referred to as an embolus? | show 🗑
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| At a particular institution the PE protocol includes a second scan series, performed 180 seconds after the IV contrast. What is the purpose of this second series? | show 🗑
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| What heart valve is located between the right atrium and the right ventricle? | show 🗑
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| B-blockers are likely to be used as part of a cardiac CT protocol when the: | show 🗑
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| An imaging technique that attempts to acquire data only during cardiac segments with the lowest cardiac motion is called: | show 🗑
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| A patient who is scheduled for a CT study has an irregular heartbeat with a rate of approximately 85 bpm. For which clinical indication is this the most problematic? | show 🗑
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| Why is it recommended that cardiac CT calcium scoring be restricted to patients with risk factors for coronary artery disease, rather than using it as a screening tool for all patients? | show 🗑
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| Although patient compliance can sometime be a factor, what volume of oral contrast is typically considered the minimum amount needed for a routine CT study of the abdomen and pelvis? | show 🗑
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| show | 350 ww; 70 wl
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| A noncontrast CT of the abdomen is ordered on Mr. Smith. The primary indication is a 15-year history of alcoholism. What can the technologist do to help the radiologist determine whether the patient has a fatty liver? | show 🗑
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| show | portal venous phase
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| show | to assess possible liver metastasis from a primary thyroid tumor
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| show | 110 seconds
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| show | is an adenoma
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| show | the variable position of the appendix
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| show | limits the scan area to the lower abdomen and upper pelvis
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| What percentage of urinary tract calculi will be seen on non contrast helical computed tomography? | show 🗑
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| show | isotropic voxels enable MPR images to be created in any plane with the same spatial resolution as the original sections
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| Why is it recommended to position the patient for a shoulder CT so that the unaffected arm is extended over the patient's head? | show 🗑
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