17377758
Description
Flashcards by Huw Lockwood, updated more than 1 year ago
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Created by Huw Lockwood
over 5 years ago
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| Question | Answer |
| What must be done in preparation for a stroke pathway patient? | Hold the scanner and notify the radiologist. |
| What recons are done on a perfusion scan? | Include an axial COW at 1x1 if the automatically generated axial is not aligned to the hard palate. No 3D recons are required. |
| What is the minimum time allowed between the head/neck angio and the perfusion scan and why? | 3 minutes to allow the contrast to clear. |
| What should be written on a perfusion scan request? | ? Stroke, Positive FAST or For Stroke Pathway |
| Where should the tracker be placed for a head venogram and why? | Around C2 with the tracker in the back fat to avoid accidental triggering by bone. |
| How might a non-con head change a perfusion pathway? | If there is a bleed on the non-con head, further imaging may not be needed as the clinical question is answered. |
| What is the typical indication for a head venogram? | (Cerebral) venous sinus thrombosis - clots in the dural venous sinuses which drain blood from the head. |
| When should a head venogram be triggered? | As soon as contrast is seen in either the carotid or vertebral arteries. |
| What is a typical indication for a head angiogram? | ? Aneurysm. |
| Explain tracker and trigger of a head angiogram. | Place the tracker at C2 in the back fat and trigger when contrast is seen in either the carotid or vertebral arteries. |
| Give details on tracker and trigger for a post con/dual phase neck. | No tracker or trigger is used to save dose. Instead, the scan is automatically triggerered after 86 seconds. |
| With a post con head, what length of time should elapse from injection before triggering the scan? | About 5 minutes. |
| What are two typical indications for a dual phase neck? | Malignancy and abscess. |
| Where should the tracker be placed for an arterial phase neck? | At the aortic arch. |
| What is the scan field for an arterial phase neck? | Aortic arch to above orbits. |
| What area should be scanned for an abdominal angiogram? | From above the diaphragm to the femoral heads. |
| What adjustments can be made to the timing of an abdominal angiogram and why? | Change the timing to 10 seconds if a large heart is identified. |
| What phases should be included when querying an abdominal bleed? | Non-con, late arterial and delayed. |
| What phases are included on a pancreas protocol? | Non-con, venous and late arterial. |
| Define the areas that should be imaged on a pancreas scan. | Non-con - upper abdomen. Venous - medial costophrenic angle to below kidneys. Late arterial - medial costophrenic angle to symph. |
| What preparation is needed for a pancreas scan? | One cup of water 10 minutes prior to scanning and one immediately prior to scanning. |
| Why is a non-con pancreas performed? | To look for pancreatic calcification. |
| What is a FAST test? | Face, arms, speech test |
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