Moore's Law Statistical Validation [Updated] - Sanjoy Sanyal
Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal
-
Upload
sanjoy-sanyal -
Category
Education
-
view
568 -
download
1
Transcript of Abnormal Right Vertebral Artery MRA Sequence - Sanjoy Sanyal
Abnormal Right Vertebral Artery
Dr. Sanjoy SanyalAssociate Dean and Clinical Neuroscience Professor
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
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
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
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
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
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
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
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
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
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
Thank you for watching