Functional MRI of working memory in paediatric head injury A case study Zach Holladay.
MRI CASE
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Transcript of MRI CASE
MRI CASE
Done By :Haya Al-Thuwaini Ro’aa Al-Nemer
Kholoud Al-Washmi
Prepared For:Dr.Halima,,
Out lines:
The procedure:
Pt historyClinical indication.About the disease.Scanner &sequences.Finding & images.
• Procedure: MRI sella turcica .
• DOE: 9-AUG-2010
• History:33 years old female with headache associated with
blurred vision.
• Clinical indication:R/O pituitary adenoma.
Pituitary AdenomaPituitary adenomas are a noncancerous growth in the
pituitary gland. * account for about 15% of intracranial neoplasm's.
TYPES of Pituitary Adenomas:They are classified based on size:1. Pituitary microadenomas are smaller than 10 millimeters
(more common).2. Pituitary macroadenomas are 10 millimeters or larger.
SYMPTOMS of Pituitary Adenomas:
1. Symptoms vary, depending on the size and location of the adenoma.
2. Tiredness, headaches, vision problems, vomiting, or dizziness.
DIAGNOSES:3. pituitary function testing (blood hormone levels) .4. pituitary imaging: computed tomography (CT), MRI scan
is preferred.
TREATMENT for a pituitary adenoma can include:
Depend on the type of tumor & its size:
Surgery
Radiation therapy.
Drug therapy.
Scanner: GE (1.5 T)
Sequence:
FSE is: a spin echo pulse sequence, but echo train
length consists of several 180° rephasing pulses.
At each rephasing, an echo is produced and a different phase encoding step is performed.
• Fast Spin Echo advantages:1. Short scan time.
• Fast Spin Echo disadvantages:1. higher SAR.2. image blurring.
TECHNIQE:Multiplaner, multisequential MRI as per pituitary protocol including the following
sequence:
SAGITTAL T1 :
TR = 650 , TE = minimum , echo train = 3 , BW = 15.6 , F = 320 , Q = 192 , NEX = 4
SAGITTAL T1 FSE : The same as above.
CORONAL & AXIAL DIFFUSION :
TR = 10000 , TE = min. , F = 128 , Q = 128 , NEX = 2 , P.value =1000
CORONAL T2:
TR = 2075 , TE = 120 , echo train = 17 , BW = 12 , F = 320 , Q = 224 , NEX = 4
CORONAL T1 :
TR = 450 , TE = min. , echo train = 2 , BW = 15 , F = 256 , Q = 224 , NEX = 4
CORONAL T1 FSE : The same as above.
Contrast media:4 ml half dose.All sequences are taken pre + post CM except T2 sequence, it is only post CM.
RF used coil:Head coil (volume coil).
•
Findings:The pituitary gland has normal size & signal intensity.Homogeneous enhancement with no focal pituitary lesion or abnormal enhancement.
Impression:Unremarkable MRI pituitary gland examination.
THANK YOU,,