MRI of the Thoracic Spine Axial T 1

MRI of the Thoracic Spine: Axial T 1 wtd. images. A: Yellow arrow: Thoracic cord T 11 Body Long white arrow: Cerebrospinal fluid space Orange arrow: Costotransverse joint Green arrow: Pedicle b Ri A White arrowhead: Transverse process B: White arrow: Neural foramina with exiting nerve root T 11 -T 12 Disc Yellow arrow: Facet joint Red arrow: Spinous process Green arrow : Lamina B Orange arrow: Thoracic Aorta

Yellow arrow : Bright T 2 wtd. CSF signal surrounds the cervical cord. C 5 -C 6 DISC Red arrow : Cervical cord. Blue arrow : Left C 6 nerve root exits out of the spinal canal through C 5 -C 6 neural foramina. White arrow : Vertebral artery. Axial T 2 wtd. MRI of the cervical spine at C 5 -C 6 level

MRI of the Thoracic Spine : Sagittal T 2 wtd. Image White arrow: Degenerative disc disease at T 7 -T 8 level. Yellow arrow : Normal thoracic cord is seen surrounded by bright cerebrospinal fluid(C. S. F) signal on T 2 wtd. pulse sequence, which is the sequence of choice to evaluate spinal cord pathology.

MRI cervical spine : C 2 Sagittal T 2 wtd. fat suppressed Image. C. S. F signal is bright ( yellow arrow ) on T 2 wtd. Image ( dark on T 1 wtd. Image ). C 5 Cerebro spinal fluid surrounds the spinal cord. T 1 Subcutaneous fat signal is suppressed and appears dark on fat suppressed image( green arrow ) whereas fat signal is bright on T 1 wtd. Image. Red arrow points to cervical cord.

5 1 2 3 MRI OF CERVICAL SPINE : Sagittal projection 6 C 5 T 1 wtd. Image : CSF is dark ( yellow arrow ) surrounding the thoracic cord ( red arrow ) 7 4 T 1 FAT is bright ( green arrow ) on T 1 wtd. Image. 1. Anterior arch of C 1 2. Odontoid process of C 2 3. C 2 vertebral body 4. C 5 -C 6 disk space 5. Posterior arch of C 1 6. Cervical cord 7. C 7 spinous process

Anatomy of Brain By Magnetic Resonance Imaging (MRI)

4 3 2 5 1 6 Identify anatomical structures 1 - 24 7 8 9 24 10 18 19 20 17 21 22 16 11 12 15 23 13 14 Fig. 1. 10 A midline Post-contrast Sagittal T 1 Weighted MRI

3 Fig. 1. 10 A midline Post-contrast Sagittal t 1 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 T 1 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 T 1 Wtd M. R. I. Section at the level of medulla Fig. 1. 2 Post Contrast Axial MR Image of the brain

Post Contrast sagittal T 1 Wtd M. R. I. Section at the level of Pons Fig. 1. 3 Post Contrast Axial MR Image of the brain

Post Contrast sagittal T 1 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 T 1 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 T 1 Wtd M. R. I. Section at the level of Thalamus Fig. 1. 6 Post Contrast Axial MR Image of the brain

Post Contrast sagittal T 1 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 T 1 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 T 1 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 T 1 Weighted MRI

Fig. 1. 12. Coronal Section of the Brain at the level of Pituitary gland Post Contrast Coronal T 1 Weighted MRI

Fig. 1. 13. Coronal Section of the Brain at the level of the orbits. Post Contrast Coronal T 1 Weighted MRI.

4 3 2 5 1 6 7 8 9 24 10 18 19 20 17 21 22 16 11 12 15 23 13 14 Fig. 1. 10 A midline Post-contrast Sagittal T 1 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

8 7 6 3 5 2 4 1 Identify anatomical structures 1 - 8 Fig. 1. 11. Coronal Section of the Brain at the level of IV Ventricle Post Contrast Coronal T 1 Weighted MRI

8 7 6 3 5 2 4 1 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 T 1 Weighted MRI

1 2 3 4 5 6 8 11 7 9 10 12 Fig. 1. 12. Coronal Section of the Brain at the level of Pituitary gland Post Contrast Coronal T 1 Weighted MRI Identify anatomical structures 1 - 12

1 2 3 4 5 6 8 11 7 9 10 12 Fig. 1. 12. Coronal Section of the Brain at the level of Pituitary gland Post Contrast Coronal T 1 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

1 2 3 4 5 Fig. 1. 13. Coronal Section of the Brain at the level of the orbits. Post Contrast Coronal T 1 Weighted MRI. Identify anatomical structures 1 - 5

1 2 3 1. Frontal lobe 4 2. Orbital Fat 3. Globe 5 4. Nasal Cavity 5. Maxillary Sinus Fig. 1. 13. Coronal Section of the Brain at the level of the orbits. Post Contrast Coronal T 1 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

5 3 Post Contrast sagittal T 1 Weighted M. R. I. 2 Section at the level of Foramen Magnum 1 Answers 4 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 T 1 Wtd M. R. I. Section at the level of medulla 6 Answers 7 Fig. 1. 2 Post Contrast Axial MR Image of the brain 6. Medulla 7. Sigmoid Sinus

14 13 12 11 17 Post Contrast sagittal T 1 Wtd M. R. I. Section at the level of Pons 10 16 15 Answers 9 8 Fig. 1. 3 Post Contrast Axial MR Image of the brain 8. Cerebellar Hemisphere 13. Internal Carotid Artery 9. Vermis 14. Cavernous Sinus 10. IV Ventricle 15. Middle Cerebellar Peduncle 11. Pons 12. Basilar Artery 16. Internal Auditory Canal 17. Temporal Lobe

20 22 19 Post Contrast sagittal T 1 Wtd M. R. I. 18 21 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

27 25 24 Post Contrast sagittal T 1 Wtd M. R. I. Section at the level of the III Ventricle Answers 23 26 23. Occipital Lobe 24. III Ventricle 25. Frontal Lobe Fig. 1. 5 Post Contrast Axial MR Image of the brain 26. Temporal Lobe 27. Sylvian Fissure

38 37 32 36 31 35 Post Contrast sagittal T 1 Wtd M. R. I. 30 Section at the level of Thalamus 29 Answers 34 33 28 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

41 40 39 Post Contrast sagittal T 1 Wtd M. R. I. 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

44 43 Post Contrast sagittal T 1 Wtd M. R. I. Section at the level of Body of Corpus Callosum 42 Answers 42. Parietal Lobe Fig. 1. 8 Post Contrast Axial MR Image of the brain 43. Body of the Corpus Callosum 44. Frontal Lobe

46 Post Contrast sagittal T 1 Wtd M. R. I. Section above the Corpus Callosum 45 Answers 45. Parietal Lobe 46. Frontal Lobe Fig. 1. 9 Post Contrast Axial MR Image of the brain