Transcript Slide 1

MRI of the Thoracic Spine: Axial T1 wtd.images.
A:
Yellow arrow: Thoracic cord
T11 Body
Long white arrow: Cerebrospinal fluid space
Orange arrow: Costotransverse joint
Green arrow: Pedicle
A
White arrowhead: Transverse process
B:
White arrow: Neural foramina with exiting nerve root
T11-T12 Disc
Yellow arrow: Facet joint
Red arrow: Spinous process
Green arrow : Lamina
B
Orange arrow: Thoracic Aorta
Yellow arrow : Bright T2
wtd . CSF signal
surrounds the cervical
cord .
C5-C6 DISC
Red arrow : Cervical
cord.
Blue arrow : Left C6
nerve root exits out of
the spinal canal through
C5-C6 neural foramina .
White arrow : Vertebral
artery .
Axial T2 wtd. MRI of the cervical spine at C5-C6 level
MRI of the Thoracic Spine : Sagittal T2 wtd. Image
White arrow: Degenerative disc disease at T7-T8
level.
Yellow arrow : Normal thoracic cord is seen
surrounded by bright cerebrospinal
fluid(C.S.F) signal on T2 wtd. pulse sequence,
which is the sequence of choice to evaluate
spinal cord pathology.
MRI cervical spine :
C2
Sagittal T2wtd. fat suppressed Image .
C.S.F signal is bright ( yellow arrow ) on
T2 wtd. Image ( dark on T1 wtd. Image ).
C5
Cerebro spinal fluid surrounds the spinal
cord.
T1
Subcutaneous fat signal is suppressed and
appears dark on fat suppressed image(
green arrow ) whereas fat signal is bright
on T1 wtd. Image .
Red arrow points to cervical cord .
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MRI OF CERVICAL SPINE : Sagittal
projection
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C5
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T1
T1 wtd. Image : CSF is dark ( yellow
arrow )
surrounding the thoracic cord ( red arrow
)
FAT is bright ( green arrow ) on T1 wtd.
Image .
1. Anterior arch of C1
2. Odontoid process of C2
3. C2 vertebral body
4. C5-C6 disk space
5. Posterior arch of C1
Anatomy of Brain By
Magnetic Resonance
Imaging (MRI)
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Identify anatomical structures 1 - 24
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Fig. 1.10 A midline Post-contrast Sagittal T1 Weighted MRI
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Fig. 1.10 A midline Post-contrast Sagittal t1 Weighted MRI
Identify the brain structures in the
following post-contrast axial MR
images (Fig 1.1 to Fig 1.9) marked 1
through 45
Post Contrast sagittal T1 Weighted
M.R.I.
Section at the level of Foramen
Magnum
Fig. 1.1 Post Contrast Axial MR Image of the brain
Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of medulla
Fig. 1.2 Post Contrast Axial MR Image of the brain
Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of Pons
Fig. 1.3 Post Contrast Axial MR Image of the brain
Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of Mid Brain
Fig. 1.4 Post Contrast Axial MR Image of the brain
Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of the
III Ventricle
Fig. 1.5 Post Contrast Axial MR Image of the brain
Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of Thalamus
Fig. 1.6 Post Contrast Axial MR Image of the brain
Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of Corpus
Callosum
Fig. 1.7 Post Contrast Axial MR Image of the brain
Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of Body of
Corpus Callosum
Fig. 1.8 Post Contrast Axial MR Image of the brain
Post Contrast sagittal T1 Wtd
M.R.I.
Section above the Corpus Callosum
Fig. 1.9 Post Contrast Axial MR Image of the brain
Identify the brain structures in the
following post-contrast axial MR
images (Fig 1.1 to Fig 1.9) marked 1
through 45
Fig. 1.11. Coronal Section of the Brain at the level of IV Ventricle
Post Contrast Coronal T1 Weighted MRI
Fig. 1.12. Coronal Section of the Brain at the level of Pituitary gland
Post Contrast Coronal T1 Weighted MRI
Fig. 1.13. Coronal Section of the Brain at the level of the orbits.
Post Contrast Coronal T1 Weighted MRI.
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Fig. 1.10 A midline Post-contrast Sagittal T1 Weighted MRI
1. Scalp fat
2. Bone
3. Inferior sagittal sinus
4. Corpus callosum
5. Internal cerebral vein
6. Vein of Galen
7. Superior sagittal sinus
8. Parietal lobe
9. Occipital lobe
10. Straight sinus
11. Vermis
12. IV ventricle
13. Cerebellar tonsil
14. Cervical cord
15. Medulla
16. Pons
17. Midbrain
18. Mass intermedia of thalamus
19. Anterior III ventricle
20. Optic chiasm
21. Pituitary gland
22. Sphenoid sinus
23. Nasopharynx
24. Frontal lobe
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Identify anatomical structures 1 - 8
Fig. 1.11. Coronal Section of the Brain at the level of IV Ventricle
Post Contrast Coronal T1 Weighted MRI
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1. Cerebellar tonsil
2. Cerebellar hemisphere
3. IV ventricle
4. Superior vermis
5. Tentorium
6. Posterior temporal lobe
7. Choroid plexus within lateral ventricle
8. Posterior frontal lobe
Fig. 1.11. Coronal Section of the Brain at the level of IV Ventricle
Post Contrast Coronal T1 Weighted MRI
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Fig. 1.12. Coronal Section of the Brain at the level of Pituitary gland
Post Contrast Coronal T1 Weighted MRI
Identify anatomical structures 1 - 12
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Fig. 1.12. Coronal Section of the Brain at the level of Pituitary gland
Post Contrast Coronal T1 Weighted MRI
1. Frontal lobe
2. Corpus callosum
3. Frontal horn
4. Caudate nucleus
5. III ventricle
6. Optic nerve
7. Pituitary stalk
8. Pituitary gland
9. Internal carotid artery
10. Cavernous sinus
11. Sphenoid sinus
12. Nasopharynx
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Fig. 1.13. Coronal Section of the Brain at the level of the orbits.
Post Contrast Coronal T1 Weighted MRI.
Identify anatomical structures 1 - 5
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1. Frontal lobe
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2. Orbital Fat
3. Globe
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4. Nasal Cavity
5. Maxillary Sinus
Fig. 1.13. Coronal Section of the Brain at the level of the orbits.
Post Contrast Coronal T1 Weighted MRI.
Identify the brain structures in the
following post-contrast axial MR
images (Fig 1.1 to Fig 1.9) marked 1
through 45
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Post Contrast sagittal T1 Weighted
M.R.I.
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Section at the level of Foramen
Magnum
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Answers
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1. Cisterna Magna
2. Cervical Cord
3. Nasopharynx
Fig. 1.1 Post Contrast Axial MR Image of the brain
4. Mandible
5. Maxillary Sinus
Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of medulla
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Answers
6. Medulla
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Fig. 1.2 Post Contrast Axial MR Image of the brain
7. Sigmoid Sinus
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Post Contrast sagittal T1 Wtd
M.R.I.
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Section at the level of Pons
Answers
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8. Cerebellar
Hemisphere
13. Internal Carotid
Artery
9. Vermis
14. Cavernous Sinus
10. IV Ventricle
15. Middle Cerebellar
Peduncle
11. Pons
Fig. 1.3 Post Contrast Axial MR Image of the brain
12. Basilar Artery
16. Internal Auditory
Canal
17. Temporal Lobe
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Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of Mid Brain
Answers
18. Aqueduct of Sylvius
19. Midbrain
20. Orbits
Fig. 1.4 Post Contrast Axial MR Image of the brain
21. Posterior Cerebral Artery
22. Middle Cerebral Artery
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Post Contrast sagittal T1 Wtd
M.R.I.
Section at the level of the
III Ventricle
Answers
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23. Occipital Lobe
24. III Ventricle
25. Frontal Lobe
26. Temporal Lobe
Fig. 1.5 Post Contrast Axial MR Image of the brain
27. Sylvian Fissure
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Post Contrast sagittal T1 Wtd
M.R.I.
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Section at the level of Thalamus
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Answers
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28. Superior Sagittal Sinus
33. Thalamus
29. Occipital Lobe
34. Temporal Lobe
30. Choroid Plexus within the
35. Internal Capsule
occipital horn
Fig. 1.6 Post Contrast Axial MR Image of the brain
36. Putamen
31. Internal Cerebral Vein
37. Caudate Nucleus
32. Frontal Horn
38. Frontal Lobe
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Post Contrast sagittal T1 Wtd
M.R.I.
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Section at the level of Corpus
Callosum
Answers
39. Splenium of corpus callosum
40. Choroid plexus within the
body of lateral ventricle
Fig. 1.7 Post Contrast Axial MR Image of the brain
41. Genu of corpus callosum
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Post Contrast sagittal T1 Wtd
M.R.I.
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Section at the level of Body of
Corpus Callosum
Answers
42. Parietal Lobe
43. Body of the Corpus Callosum
Fig. 1.8 Post Contrast Axial MR Image of the brain
44. Frontal Lobe
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Post Contrast sagittal T1 Wtd
M.R.I.
Section above the Corpus Callosum
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Answers
45. Parietal Lobe
46. Frontal Lobe
Fig. 1.9 Post Contrast Axial MR Image of the brain