abnormal right vertebral artery mra sequence - sanjoy sanyal
TRANSCRIPT
![Page 1: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/1.jpg)
Abnormal Right Vertebral Artery
Dr. Sanjoy SanyalAssociate Dean and Clinical Neuroscience Professor
![Page 2: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/2.jpg)
Abnormal Right Vertebral Artery
• This is a composite MRA image of the Cerebral Circulation
• Next slide contains an embedded video of 3-D Time of Flight (TOF) Spoiled Gradient Recall (SPGR) Echo MRA images
• The slides thereafter are enlarged screen shots from the MRA series
![Page 3: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/3.jpg)
Abnormal Right Vertebral Artery
• All are enlarged screen shots of 3-D Time of Flight (TOF) Spoiled Gradient Recall (SPGR) Echo Acquisition MRA series
• Narrow Right Vertebral Artery is clearly visible in this image
![Page 4: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/4.jpg)
Abnormal Right Vertebral Artery
• The successive MRA images are TOF sequence, as if the Head is rotating clockwise
• An ‘Accessory’ Right Vertebral Artery becomes visible in this image
![Page 5: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/5.jpg)
Abnormal Right Vertebral Artery
• Narrow Right Vertebral Artery is clearly visible
• The ‘Accessory’ Vertebral Artery is clearly separate from the narrow one on the right side
![Page 6: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/6.jpg)
Abnormal Right Vertebral Artery
• Continuing with Time of Flight (TOF) Spoiled Gradient Recall (SPGR) Echo Acquisition series of MRA Images
• Same findings as previous slide
• Imagine the head is rotating clockwise
![Page 7: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/7.jpg)
Abnormal Right Vertebral Artery
• The ‘Accessory’ Right Vertebral Artery gives a communication to Right Internal Carotid and to the Right Vertebral Artery
• This can be seen in the embedded video in the last slide
• The Accessory Artery is intermediate in size between normal Left Vertebral Artery and narrow Right Vertebral Artery
![Page 8: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/8.jpg)
Abnormal Right Vertebral Artery
• The ‘Accessory’
Artery itself is
moving further
postero-laterally
with the clockwise
rotation of head• Narrow Right
Vertebral Artery is
clearly visible as
a bifid artery
![Page 9: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/9.jpg)
Abnormal Right Vertebral Artery
• ‘Accessory’ Right
Vertebral Artery has a
separate distribution
on the Right side
which does not have
a counterpart on the
Left side
• Narrow Right
Vertebral Artery and
communication with
Right Internal Carotid
are clearly visible
![Page 10: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/10.jpg)
Abnormal Right Vertebral Artery
• These images are screen grab views of a 3-D Time of Flight (TOF) Spoiled Gradient Recall (SPGR) Echo Acquisition MRA Images
• Same findings as previous slide
![Page 11: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/11.jpg)
Abnormal Right Vertebral Artery
• These images are screen grab views of a 3-D Time of Flight (TOF) Spoiled Gradient Recall (SPGR) Echo Acquisition MRA Images
• The next slide gives the embedded video of the 2-D TOF axial slice sequence of MRA images
![Page 12: Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal](https://reader035.vdocuments.site/reader035/viewer/2022070513/58862a701a28ab8f2c8b6a03/html5/thumbnails/12.jpg)
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