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What is the appropriate MRI protocol for imaging the thoracic aorta to rule out aortic dissection?
What is the appropriate MRI protocol for imaging the thoracic aorta to rule out aortic dissection?
This protocol outlines a structured MRI approach, including HASTE and MRA or TOF sequences, for evaluating suspected aortic dissection.
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May guide MRI protocols for suspected aortic dissection; leaves open prospective validation against CT.
This unit presents a for imaging of thoracic aoprta to rule out aortic dissection. The core components of the imaging protocol are ECG (electrocardiograph)‐gated black blood HASTE (half Fourier single shot turbo spin echo), and contrast‐enhanced MR angiography (MRA). When no abnormal findings are seen in black blood HASTE or cine sequences, it is somewhat controversial whether contrast‐enhanced MRA is necessary. An based on a time of flight (TOF) sequence is presented which can be used instead of contrast‐enhanced MRA.
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Takahashi et al. (2001) studied this question.
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