CT- Brain . Dr.Sajid Mumtaz Sodhar

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C.T Brain Dr. Sajid Mumtaz Sodhar “Sodhar Courtesy”

fig1:

Fig. 1 Scanogram (scout view): This is a preliminary image obtained in the lateral projection to locate the start line for brain CT examination. fig1 “ Sodhar Courtesy”

fig1:

Fig. 1 Scanogram (scout view): This is a preliminary image obtained in the lateral projection to locate the start line for brain CT examination. fig1 “ Sodhar Courtesy”

fig2:

Fig. 2 Scanogram (scout view ) The start line is shown at the skull base. It should be aligned to pass through the junction between the external canthus and the external auditory canal ( the radiogarphic base line ) The examination proceeds towards the skull vertex sections are taken every 1 cm interval fig2 “ Sodhar Courtesy”

fig1:

Fig. 1 Scanogram (scout view): This is a preliminary image obtained in the lateral projection to locate the start line for brain CT examination. fig1 “ Sodhar Courtesy”

fig3:

Fig. 3 This is the first section in CT brain examination. It shows : 1- orbits 2-ethmoid air cells 3-foramen magnum 4-petrous bone &mastoids fig3 “ Sodhar Courtesy”

fig3a:

Fig. 3 This is the first section in CT brain examination. It shows : 1-the orbits 2-ethmoid air cells 3-foramen magnum 4-petrous bone &mastoids fig3a “ Sodhar Courtesy”

fig3b:

Fig. 3 This is the first section in CT brain examination. It shows : 1-the orbits 2-ethmoid air cells 3-foramen magnum 4-petrous bone &mastoids fig3b “ Sodhar Courtesy”

fig3c:

Fig. 3 This is the first section in CT brain examination. It shows : 1-the orbits 2-ethmoid air cells 3-foramen magnum 4-petrous bone &mastoids fig3c “ Sodhar Courtesy”

fig 3d:

Fig. 3 This is the first section in CT brain examination. It shows : 1-the orbits 2-ethmoid air cells 3-foramen magnum 4-petrous bone &mastoids fig 3d “ Sodhar Courtesy”

fig4:

Fig. 4 A section at a higher level showing: 1- the orbit 2- petrous bones &mastoids 3- part of the cerebellum 4- the lower part of the brain stem ( medulla oblongata ) fig4 “ Sodhar Courtesy”

fig4a:

Fig. 4 A section at a higher level showing: 1- the orbit 2- petrous bones &mastoids 3- part of the cerebellum 4- the lower part of the brain stem ( medulla oblongata ) fig4a “ Sodhar Courtesy”

fig4b:

Fig. 4 A section at a higher level showing: 1- the orbit 2- petrous bones &mastoids 3- part of the cerebellum 4- the lower part of the brain stem ( medulla oblongata ) fig4b “ Sodhar Courtesy”

fig4c:

Fig. 4 A section at a higher level showing: 1- the orbit 2- petrous bones &mastoids 3- part of the cerebellum 4- the lower part of the brain stem ( medulla oblongata ) fig4c “ Sodhar Courtesy”

fig4d:

Fig. 4 A section at a higher level showing: 1- the orbit 2- petrous bones &mastoids 3- part of the cerebellum 4- the lower part of the brain stem ( medulla oblongata ) fig4d “ Sodhar Courtesy”

fig5:

Fig. 5 A section at a higher level to fig. 4 showing: 1- the petrous bones 2- cerebellar hemispheres 3- the medulla oblongata 4- the cisterna magna 5- the inferior part of the 4 th ventricle 6- a CSF space connecting the inferior 4 th ventricle with the cisterna magna (vallecula) fig5 “ Sodhar Courtesy”

fig5a:

Fig. 5 A section at a higher level to fig. 4 showing: 1- the petrous bones 2- cerebellar hemispheres 3- the medulla oblongata 4- the cisterna magna 5- the inferior part of the 4 th ventricle 6- a CSF space connecting the inferior 4 th ventricle with the cisterna magna (vallecula) fig5a “ Sodhar Courtesy”

fig5b:

Fig. 5 A section at a higher level to fig. 4 showing: 1- the petrous bones 2- cerebellar hemispheres 3- the medulla oblongata 4- the cisterna magna 5- the inferior part of the 4 th ventricle 6- a CSF space connecting the inferior 4 th ventricle with the cisterna magna (vallecula) fig5b “ Sodhar Courtesy”

fig5c:

Fig. 5 A section at a higher level to fig. 4 showing: 1- the petrous bones 2- cerebellar hemispheres 3- the medulla oblongata 4- the cisterna magna 5- the inferior part of the 4 th ventricle 6- a CSF space connecting the inferior 4 th ventricle with the cisterna magna (vallecula) fig5c “ Sodhar Courtesy”

fig5d:

Fig. 5 A section at a higher level to fig. 4 showing: 1- the petrous bones 2- cerebellar hemispheres 3- the medulla oblongata 4- the cisterna magna 5- the inferior part of the 4 th ventricle 6- a CSF space connecting the inferior 4 th ventricle with the cisterna magna (vallecula) fig5d “ Sodhar Courtesy”

fig5e:

Fig. 5 A section at a higher level to fig. 4 showing: 1- the petrous bones 2- cerebellar hemispheres 3- the medulla oblongata 4- the cisterna magna 5- the inferior part of the 4 th ventricle 6- a CSF space connecting the inferior 4 th ventricle with the cisterna magna (vallecula) fig5e “ Sodhar Courtesy”

fig5f:

Fig. 5 A section at a higher level to fig. 4 showing: 1- the petrous bones 2- cerebellar hemispheres 3- the medulla oblongata 4- the cisterna magna 5- the inferior part of the 4 th ventricle 6- a CSF space connecting the inferior 4 th ventricle with the cisterna magna (vallecula) fig5f “ Sodhar Courtesy”

fig6:

Fig. 6 A section at a higher level to fig. 5 showing: 1- the petrous bone & mastoid 2- the left and right cerebellar hemispheres 3- the medulla oblongata 4- the lower part of the 4 th ventricle 5- the basilar artery fig6 “ Sodhar Courtesy”

fig6a:

Fig. 6 A section at a higher level to fig. 5 showing: 1- the petrous bone & mastoid 2- the left and right cerebellar hemispheres 3- the medulla oblongata 4- the lower part of the 4 th ventricle 5- the basilar artery fig6a “ Sodhar Courtesy”

fig6b:

Fig. 6 A section at a higher level to fig. 5 showing: 1- the petrous bone & mastoid 2- the left and right cerebellar hemispheres 3- the medulla oblongata 4- the lower part of the 4 th ventricle 5- the basilar artery fig6b “ Sodhar Courtesy”

fig6c:

Fig. 6 A section at a higher level to fig. 5 showing: 1- the petrous bone & mastoid 2- the left and right cerebellar hemispheres 3- the medulla oblongata 4- the lower part of the 4 th ventricle 5- the basilar artery fig6c “ Sodhar Courtesy”

fig6d:

Fig. 6 A section at a higher level to fig. 5 showing: 1- the petrous bone & mastoid 2- the left and right cerebellar hemispheres 3- the medulla oblongata 4- the lower part of the 4 th ventricle 5- the basilar artery fig6d “ Sodhar Courtesy”

fig6e:

Fig. 6 A section at a higher level to fig. 5 showing: 1- the petrous bone & mastoid 2- the left and right cerebellar hemispheres 3- the medulla oblongata 4- the lower part of the 4 th ventricle 5- the basilar artery fig6e “ Sodhar Courtesy”

fig7:

Fig. 7 A section at a higher level to 6 showing : 1- the 4 th ventricle at its largest part 2- the cerebellar hemisphere 3- the mid part of the brain stem (pons) 4- the basilar artery in the prepontine cistern 5- the lower part of the frontal lobes 6- the lower part of the temporal lobes 7- the cerebellopontine junction fig7 “ Sodhar Courtesy”

fig7a:

Fig. 7 A section at a higher level to 6 showing : 1- the 4 th ventricle at its largest part 2- the cerebellar hemisphere 3- the mid part of the brain stem (pons) 4- the basilar artery in the prepontine cistern 5- the lower part of the frontal lobes 6- the lower part of the temporal lobes 7- the cerebellopontine junction fig7a “ Sodhar Courtesy”

fig7b:

Fig. 7 A section at a higher level to 6 showing : 1- the 4 th ventricle at its largest part 2- the cerebellar hemispheres 3- the mid part of the brain stem (pons) 4- the basilar artery in the prepontine cistern 5- the lower part of the frontal lobes 6- the lower part of the temporal lobes 7- the cerebellopontine junction fig7b “ Sodhar Courtesy”

fig7c:

Fig. 7 A section at a higher level to 6 showing : 1- the 4 th ventricle at its largest part 2- the cerebellar hemispheres 3- the mid part of the brain stem (pons) 4- the basilar artery in the prepontine cistern 5- the lower part of the frontal lobes 6- the lower part of the temporal lobes 7- the cerebellopontine junction fig7c “ Sodhar Courtesy”

fig7d:

Fig. 7 A section at a higher level to 6 showing : 1- the 4 th ventricle at its largest part 2- the cerebellar hemispheres 3- the mid part of the brain stem (pons) 4- the basilar artery in the prepontine cistern 5- the lower part of the frontal lobes 6- the lower part of the temporal lobes 7- the cerebellopontine junction fig7d “ Sodhar Courtesy”

fig7e:

Fig. 7 A section at a higher level to 6 showing : 1- the 4 th ventricle at its largest part 2- the cerebellar hemispheres 3- the mid part of the brain stem (pons) 4- the basilar artery in the prepontine cistern 5- the lower part of the frontal lobes 6- the lower part of the temporal lobes 7- the cerebellopontine junction fig7e “ Sodhar Courtesy”

fig7f:

Fig. 7 A section at a higher level to 6 showing : 1- the 4 th ventricle at its largest part 2- the cerebellar hemispheres 3- the mid part of the brain stem (pons) 4- the basilar artery in the prepontine cistern 5- the lower part of the frontal lobes 6- the lower part of the temporal lobes 7- the cerebellopontine junction fig7f “ Sodhar Courtesy”

fig7g:

Fig. 7 A section at a higher level to 6 showing : 1- the 4 th ventricle at its largest part 2- the cerebellar hemispheres 3- the mid part of the brain stem (pons) 4- the basilar artery in the prepontine cistern 5- the lower part of the frontal lobes 6- the lower part of the temporal lobes 7- the cerebellopontine junction fig7g “ Sodhar Courtesy”

fig8:

Fig. 8 A section at a higher level to 7 showing : 1- the upper part of the cerebellar hemisheres 2- the upper part of the brain stem (midbrain) 3- the temporal lobes 4- the frontal lobes 5- part of the occipital lobes 6- the quadrigeminal cistern 7- the 3th ventricle fig8 “ Sodhar Courtesy”

fig8a:

Fig. 8 A section at a higher level to 7 showing : 1- the upper part of the cerebellar hemisheres 2- the upper part of the brain stem (midbrain) 3- the temporal lobes 4- the frontal lobes 5- part of the occipital lobes 6- the quadrigeminal cistern 7- the 3th ventricle fig8a “ Sodhar Courtesy”

fig8b:

Fig. 8 A section at a higher level to 7 showing : 1- the upper part of the cerebellar hemishere 2- the upper part of the brain stem (midbrain) 3- the temporal lobes 4- the frontal lobes 5- part of the occipital lobes 6- the quadrigeminal cistern 7- the 3th ventricle fig8b “ Sodhar Courtesy”

fig8c:

Fig. 8 A section at a higher level to 7 showing : 1- the upper part of the cerebellar hemishere 2- the upper part of the brain stem (midbrain) 3- the temporal lobes 4- the frontal lobes 5- part of the occipital lobes 6- the quadrigeminal cistern 7- the 3th ventricle fig8c “ Sodhar Courtesy”

fig8d:

Fig. 8 A section at a higher level to 7 showing : 1- the upper part of the cerebellar hemishere 2- the upper part of the brain stem (midbrain) 3- the temporal lobes 4- the frontal lobes 5- part of the occipital lobes 6- the quadrigeminal cistern 7- the 3th ventricle fig8d “ Sodhar Courtesy”

fig8e:

Fig. 8 A section at a higher level to 7 showing : 1- the upper part of the cerebellar hemishere 2- the upper part of the brain stem (midbrain) 3- the temporal lobes 4- the frontal lobes 5- part of the occipital lobes 6- the quadrigeminal cistern 7- the 3th ventricle fig8e “ Sodhar Courtesy”

fig8f:

Fig. 8 A section at a higher level to 7 showing : 1- the upper part of the cerebellar hemishere 2- the upper part of the brain stem (midbrain) 3- the temporal lobes 4- the frontal lobes 5- part of the occipital lobes 6- the quadrigeminal cistern 7- the 3th ventricle fig8f “ Sodhar Courtesy”

fig8g:

Fig. 8 A section at a higher level to 7 showing : 1- the upper part of the cerebellar hemishere 2- the upper part of the brain stem (midbrain) 3- the temporal lobes 4- the frontal lobes 5- part of the occipital lobes 6- the quadrigeminal cistern 7- the 3th ventricle fig8g “ Sodhar Courtesy”

fig9:

Fig. 9 A higher section to 8 showing : 1- the most upper part of the cerebellum 2- the frontal lobes 3- the occipital lobes 4- the quadrigeminal cistern 5- the 3 rd ventricle 6- the lentiform nucleus 7- the head of the caudate nucleus fig9 “ Sodhar Courtesy”

fig9a:

Fig. 9 A higher section to 8 showing : 1- the most upper part of the cerebellum 2- the frontal lobes 3- the occipital lobes 4- the quadrigeminal cistern 5- the 3 rd ventricle 6- the lentiform nucleus 7- the head of the caudate nucleus fig9a “ Sodhar Courtesy”

fig9b:

Fig. 9 A higher section to 8 showing : 1- the most upper part of the cerebellum 2- the frontal lobes 3- the occipital lobes 4- the quadrigeminal cistern 5- the 3 rd ventricle 6- the lentiform nucleus 7- the head of the caudate nucleus fig9b “ Sodhar Courtesy”

fig9c:

Fig. 9 A higher section to 8 showing : 1- the most upper part of the cerebellum 2- the frontal lobes 3- the occipital lobes 4- the quadrigeminal cistern 5- the 3 rd ventricle 6- the lentiform nucleus 7- the head of the caudate nucleus fig9c “ Sodhar Courtesy”

fig9d:

Fig. 9 A higher section to 8 showing : 1- the most upper part of the cerebellum 2- the frontal lobes 3- the occipital lobes 4- the quadrigeminal cistern 5- the 3 rd ventricle 6- the lentiform nucleus 7- the head of the caudate nucleus fig9d

fig9e:

Fig. 9 A higher section to 8 showing : 1- the most upper part of the cerebellum 2- the frontal lobes 3- the occipital lobes 4- the quadrigeminal cistern 5- the 3 rd ventricle 6- the lentiform nucleus 7- the head of the caudate nucleus fig9e “ Sodhar Courtesy”

fig9f:

Fig. 9 A higher section to 8 showing : 1- the most upper part of the cerebellum 2- the frontal lobes 3- the occipital lobes 4- the quadrigeminal cistern 5- the 3 rd ventricle 6- the lentiform nucleus 7- the head of the caudate nucleus fig9f “ Sodhar Courtesy”

fig9g:

Fig. 9 A higher section to 8 showing : 1- the most upper part of the cerebellum 2- the frontal lobes 3- the occipital lobes 4- the quadrigeminal cistern 5- the 3 rd ventricle 6- the lentiform nucleus 7- the head of the caudate nucleus fig9g “ Sodhar Courtesy”

fig10:

Fig. 10 Almost similar level to 9 showing: 1- the 3 rd ventricle 2- the head of the caudate nucleus 3- the thalamus on either side of the 3 rd ventricle 4- the frontal lobe 5- the temporal lobe 6- the occipital lobe fig10 “ Sodhar Courtesy”

fig10a:

Fig. 10 Almost similar level to 9 showing: 1- the 3 rd ventricle 2- the head of the caudate nucleus 3- the thalamus on either side of the 3 rd ventricle 4- the frontal lobe 5- the temporal lobe 6- the occipital lobe fig10a “ Sodhar Courtesy”

fig10b:

Fig. 10 Almost similar level to 9 showing: 1- the 3 rd ventricle 2- the head of the caudate nucleus 3- the thalamus on the either side of the 3 rd ventricle 4- the frontal lobe 5- the temporal lobe 6- the occipital lobe fig10b “ Sodhar Courtesy”

fig10c:

Fig. 10 Almost similar level to 9 showing: 1- the 3 rd ventricle 2- the head of the caudate nucleus 3- the thalamus on the either side of the 3 rd ventricle 4- the frontal lobe 5- the temporal lobe 6- the occipital lobe fig10c

fig10d:

Fig. 10 Almost similar level to 9 showing: 1- the 3 rd ventricle 2- the head of the caudate nucleus 3- the thalamus on the either side of the 3 rd ventricle 4- the frontal lobe 5- the temporal lobe 6- the occipital lobe fig10d

fig10e:

Fig. 10 Almost similar level to 9 showing: 1- the 3 rd ventricle 2- the head of the caudate nucleus 3- the thalamus on the either side of the 3 rd ventricle 4- the frontal lobe 5- the temporal lobe 6- the occipital lobe fig10e

fig10f:

Fig. 10 Almost similar level to 9 showing: 1- the 3 rd ventricle 2- the head of the caudate nucleus 3- the thalamus on the either side of the 3 rd ventricle 4- the frontal lobe 5- the temporal lobe 6- the occipital lobe fig10f

fig11:

Fig. 11 slightly higher level to 10 showing : 1- the thalamus 2- the head of caudate nucleus 3- the frontal hornes of the lateral ventricles 4- the upper part of the quadrigeminal cistern A= retrothalamic cistern B= superior cerebellar cistern C= calcified pineal body A A B C fig11

fig11a:

Fig. 11 slightly higher level to 10 showing : 1- the thalamus 2- the head of caudate nucleus 3- the frontal hornes of the lateral ventricles 4- the upper part of the quadrigeminal cistern A= retrothalamic cistern B= superior cerebellar cistern C= calcified pineal body A A B C fig11a

fig11b:

Fig. 11 slightly higher level to 10 showing : 1- the thalamus 2- the head of caudate nucleus 3- the frontal hornes of the lateral ventricles 4- the upper part of the quadrigeminal cistern A= retrothalamic cistern B= superior cerebellar cistern C= calcified pineal body A A B C fig11b

fig11c:

Fig. 11 slightly higher level to 10 showing : 1- the thalamus 2- the head of caudate nucleus 3- the frontal hornes of the lateral ventricles 4- the upper part of the quadrigeminal cistern A= retrothalamic cistern B= superior cerebellar cistern C= calcified pineal body A A B C fig11c

fig11d:

Fig. 11 slightly higher level to 10 showing : 1- the thalamus 2- the head of caudate nucleus 3- the frontal hornes of the lateral ventricles 4- the upper part of the quadrigeminal cistern A= retrothalamic cistern B= superior cerebellar cistern C= calcified pineal body A A B C fig11d

fig12:

Fig. 12 Almost the same level of 11 showing: 1- the frontal horns of the lateral ventricles 2- the septum pellucidum 3- the line A passes at the anterior aspect of the septum pellucidum and marks the limits of the frontal lobes 4- the frontal lobes 5- the temporal lobes 6- quadrigeminal cistern with calcified pineal body inside 7 -occipital horn of the lateral ventricle with the calcified choroid plexus inside NB pineal body and choroid plexus calcification are normal variants fig12

fig12a:

Fig. 12 Almost the same level of 11 showing: 1- the frontal horns of the lateral ventricles 2- the septum pellucidum 3- the line A passes at the anterior aspect of the septum pellucidum and marks the limits of the frontal lobes 4- the frontal lobes 5- the temporal lobes 6- quadrigeminal cistern with calcified pineal body inside 7 -occipital horn of the lateral ventricle with the calcified choroid plexus inside NB pineal body and choroid plexus calcification are normal variants fig12a

fig12b:

Fig. 12 Almost the same level of 11 showing: 1- the frontal horns of the lateral ventricles 2- the septum pellucidum 3- the line A passes at the anterior aspect of the septum pellucidum and marks the limits of the frontal lobes 4- the frontal lobes 5- the temporal lobes 6- quadrigeminal cistern with calcified pineal body inside 7- occipital horn of the lateral ventricle with the calcified choroid plexus inside NB pineal body and choroid plexus calcification are normal variants fig12b “ Sodhar Courtesy”

fig12c:

Fig. 12 Almost the same level of 11 showing: 1- the frontal horns of the lateral ventricles 2- the septum pellucidum 3- the line A passes at the anterior aspect of the septum pellucidum and marks the limits of the frontal lobes 4- the frontal lobes 5- the temporal lobes 6- quadrigeminal cistern with calcified pineal body inside 7 -occipital horn of the lateral ventricle with the calcified choroid plexus inside NB pineal body and choroid plexus calcification are normal variants fig12c A “ Sodhar Courtesy”

fig12d:

Fig. 12 Almost the same level of 11 showing: 1- the frontal horns of the lateral ventricles 2- the septum pellucidum 3- the line A passes at the anterior aspect of the septum pellucidum and marks the limits of the frontal lobes 4- the frontal lobes 5- the temporal lobes 6- quadrigeminal cistern with calcified pineal body inside 7 -occipital horn of the lateral ventricle with the calcified choroid plexus inside NB pineal body and choroid plexus calcification are normal variants fig12d “ Sodhar Courtesy”

fig12e:

Fig. 12 Almost the same level of 11 showing: 1- the frontal horns of the lateral ventricles 2- the septum pellucidum 3- the line A passes at the anterior aspect of the septum pellucidum and marks the limits of the frontal lobes 4- the frontal lobes 5- the temporal lobes 6- quadrigeminal cistern with calcified pineal body inside 7 -occipital horn of the lateral ventricle with the calcified choroid plexus inside NB pineal body and choroid plexus calcification are normal variants fig12e

fig12f:

Fig. 12 Almost the same level of 11 showing: 1- the frontal horns of the lateral ventricles 2- the septum pellucidum 3- the line A passes at the anterior aspect of the septum pellucidum and marks the limits of the frontal lobes 4- the frontal lobes 5- the temporal lobes 6- quadrigeminal cistern with calcified pineal body inside 7 -occipital horn of the lateral ventricle with the calcified choroid plexus inside NB pineal body and choroid plexus calcification are normal variants fig12f

fig12g:

Fig. 12 Almost the same level of 11 showing: 1- the frontal horns of the lateral ventricles 2- the septum pellucidum 3- the line A passes at the anterior aspect of the septum pellucidum and marks the limits of the frontal lobes 4- the frontal lobes 5- the temporal lobes 6- quadrigeminal cistern with calcified pineal body inside 7 -occipital horn of the lateral ventricle with the calcified choroid plexus inside NB pineal body and choroid plexus calcification are normal variants fig12g

fig13:

Fig. 13 Section at the level of the bodies of the lateral ventricles which contain non calcified choroid plexus showing: 1- the dense strip along the wall of the ventricle represents the body and tail of the caudate nucleus 2- splenium of corpus callosum 3- genu of corpus callosum 4- the parietal lobe fig13 “ Sodhar Courtesy”

fig13a:

Fig. 13 Section at the level of the bodies of the lateral ventricles which contain non calcified choroid plexus showing: 1- the dense strip along the wall of the ventricle represent the body and tail of the caudate nucleus 2- splenium of corpus callosum 3- genu of corpus callosum 4- the parietal lobe fig13a “ Sodhar Courtesy”

fig13b:

Fig. 13 Section at the level of the bodies of the lateral ventricles which contain non calcified choroid plexus showing: 1- the dense strip along the wall of the ventricle represent the body and tail of the caudate nucleus 2- splenium of corpus callosum 3- genu of corpus callosum 4- the parietal lobe fig13b “ Sodhar Courtesy”

fig13c:

Fig. 13 Section at the level of the bodies of the lateral ventricles which contain non calcified choroid plexus showing: 1- the dense strip along the wall of the ventricle represent the body and tail of the caudate nucleus 2- splenium of corpus callosum 3- genu of corpus callosum 4- the parietal lobe fig13c

fig13d:

Fig. 13 Section at the level of the bodies of the lateral ventricles which contain non calcified choroid plexus showing: 1- the dense strip along the wall of the ventricle represent the body and tail of the caudate nucleus 2- splenium of corpus callosum 3- genu of corpus callosum 4- the parietal lobe fig13d

fig14:

Fig. 14 The same level of 13: The line A indicates the limits of the frontal lobes The line B passes through the posterior aspects of the bodies of the lateral ventricles and marks the limits of the occipital lobes The parieatal lobes are present between the two lines NB:- Lines A & B are imaginary lines to help in demonstration of the lobar anatomy. At the level of the quadrigeminal cistern,the temporal lobe is present between the lines A & B while at the level of the bodies of the lateral ventricles, the parietal lobe is present between the two lines. fig14

fig14a:

Fig. 14 The same level of 13: The line A indicates the limits of the frontal lobes The line B passes through the posterior aspects of the bodies of the lateral ventricles and marks the limits of the occipital lobes The parieatal lobes are present betweem the two lines NB:- Lines A & B are imaginary lines to help in demonstration of the lobar anatomy. At the level of the quadrigeminal cistern,the temporal lobe is present between the lines A & B while at the level of the bodies of the lateral ventricles, the parietal lobe is present between the two lines. fig14a A

fig14b:

Fig. 14 The same level of 13: The line A indicates the limits of the frontal lobes The line B passes through the posterior aspects of the bodies of the lateral ventricles and marks the limits of the occipital lobes The parieatal lobes are present betweem the two lines NB:- Lines A & B are imaginary lines to help in demonstration of the lobar anatomy. At the level of the quadrigeminal cistern,the temporal lobe is present between the lines A & B while at the level of the bodies of the lateral ventricles, the parietal lobe is present between the two lines. fig14b B

fig14c:

Fig. 14 The same level of 13: The line A indicates the limits of the frontal lobes The line B passes through the posterior aspects of the bodies of the lateral ventricles and marks the limits of the occipital lobes The parieatal lobes are present betweem the two lines NB:- Lines A & B are imaginary lines to help in demonstration of the lobar anatomy. At the level of the quadrigeminal cistern,the temporal lobe is present between the lines A & B while at the level of the bodies of the lateral ventricles, the parietal lobe is present between the two lines. fig14c

fig15:

Fig. 15 Section above the ventricles 3 lines are drawn to divide the slice into 4 equal parts : The anterior 1/4: represents the frontal lobes The remaining 3/4: represent the parietal lobes. The occipital and temporal lobes are no more present in this level In this section we see only 1- the cerebral cortex (gray matter) 2- the central part (white matter) fig15

fig15a:

Fig. 15 Section above the ventricles 3 lines are drawn to divide the slice into 4 equal parts : The anterior 1/4: represent the frontal lobes The remaining 3/4: represents the parietal lobes, the occipital and temporal lobes are no more present in this level In this section we see only 1- the cerebral cortex (gray matter) 2- the central part (white matter) fig15a

fig15b:

Fig. 15 Section above the ventricles 3 lines are drawn to divide the slice into 4 equal parts : The anterior 1/4: represent the frontal lobes The remaining 3/4: represents the parietal lobes, the occipital and temporal lobes are no more present in this level In this section we see only 1- the cerebral cortex (gray matter) 2- the central part (white matter) fig15b

fig15c:

Fig. 15 Section above the ventricles 3 lines are drawn to divide the slice into 4 equal parts : The anterior 1/4: represent the frontal lobes The remaining 3/4: represents the parietal lobes, the occipital and temporal lobes are no more present in this level In this section we see only 1- the cerebral cortex (gray matter) 2- the central part (white matter) fig15c

fig15d:

Fig. 15 Section above the ventricles 3 lines are drawn to divide the slice into 4 equal parts : The anterior 1/4: represent the frontal lobes The remaining 3/4: represents the parietal lobes, the occipital and temporal lobes are no more present in this level In this section we see only 1- the cerebral cortex (gray matter) 2- the central part (white matter) fig15d

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