الفهرس 
Gross Anattomy off tthe Braiin
The Axial Plane:Only 14 pages are availabe for public view
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Abstract
SUMMARY AND CONCLUSION
A variety of intracranial lesions, including abscesses, cystic and
necrotic tumors may appear mainly as cystic masses on CT and MRI studies
of the brain. The neuroimaging findings combined with clinical information
do not always allow a correct diagnosis. The medical management strategies
for abscess and neoplasm are different. Correct diagnosis must be obtained
before treatment of cystic brain lesions. Diffusion-weighted imaging (DWI)
and magnetic resonance spectroscopy (MRS) are useful as additional
diagnostic modalities for differentiating brain abscesses from cystic or
necrotic brain tumors.
This study was carried out in radiology & medical imaging
department, Tanta University Hospitals, included 30 patients (22 male 8
female), with age ranging from 5 to 81 years, who were subjected to history
taking and radiological examinations were included conventional MRI, DWI
and MR spectroscopy with IV contrast injection.
MRI were obtained on 1.5 Tesla MRI system, all cases were
examined in the supine position using the following sequences; axial T1WI,
axial T2WI, axial FLAIR, sagittal T1WI and post contrast T1WI in axial,
sagittal and coronal planes. Diffusion weighted imaging with apparent
diffusion coefficient calculation were obtained by using an axial echo–
planar spin echo sequence, with average 5mm slice thickness. Multi voxel
MR spectroscopy was performed using a spin-echo mode sequence (SE)
with long TE (270 ms) and short TE (35 ms).
Patients were distributed upon 3 groups namely the tumor group, the
abscess group and the non-enhancing cystic group according to the final
diagnosis. The tumor group included 19 patients (13 patients were