Radiology Channel

Saturday, April 30, 2016

Brain diffusion and perfusion.

Posted by Mohamed Mohyeldin at 11:43 AM

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-About Me

Mohamed Mohyeldin: MD in radiology since 1991. Current position: Consultant of radiology in one of the most famous medical companies in Egypt.

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Index of my Blogs

1-Radiologist For Ever (main blog).
2-Brain and Spines section.
3-Chest and Heart Section
MRI D.D.

-Visitors

Anatomy

0-0-5-MCA& ACA branches.
0-0-6-PCA.branches
0-0-7-Vascular territories
7-0-0-2-Anatomy of bundles of ACL and PCL.
7-0-0-3- Bone anatomy of skull.
7-0-0-4-Sinus CT scan.
7-0-0-5-CT anatomy of orbit.
7-0-0-6-CT anatomy of skull foramina.
7-0-0-7-CT anatomy of temporal bone.
7-0-0-8-CT anatomy of middle ear.
7-0-0-9-MRI of neck vessels.
7-0-1-0-Brain anatomy.
7-0-1-1-Posterior circulation.
7-0-1-2-Knee joint capsule.
7-0-1-4-Anatomy of posteromedial corner of the knee.
7-0-3-4-Difference between small and large bowel.

My Lectures.

0-0-0-White matter abnormalities (MR).
0-0-1-Brain diffusion and perfusion.
0-0-2-Comprehensive preoperative assessment of pancreatic carcinoma.
0-0-3-Signal intensities on T2WI and DWI in time (courtesy Dr M. Law)
0-0-4- MS Dissemination.
0-0-8-Multiple sclerosis.
0-0-9-Intestinal obstruction.
7-0-0-0-Adrenal lesions (D.D.).
7-0-0-1-Hepatic focal lesions.
7-0-1-3-Pancreatic lesions.
7-0-1-5-Causes of extra and / or intra biliary duct dilatation.
7-0-1-6-Splenic lesions.
7-0-1-7-Small Intestinal obstruction.
7-0-1-8- Enterography.
7-0-1-9-Disc lesions.
7-0-2-0-Patterns of neonatal hypoxic–ischemic brain injury.
7-0-2-1-Bowel wall thickening.
7-0-2-2-Temporal bone pathology.
7-0-2-3-Posterolateral knee instability.
7-0-2-4-Epilepsy.
7-0-2-5-MRI of Brachial plexus.
7-0-2-6- Normal Anatomy and Pathology of the Posterior Capsular Area of the Knee
7-0-2-7-Acute Abdomen.
7-0-2-8-Aortic Aneurysm Rupture.
7-0-2-9-Biliary ducts another view.
7-0-3-0-Appendicitis - Mimics.
7-0-3-1-Crohn's Disease.
7-0-3-2-MRI detection of Endometriosis.
7-0-3-3-Closed Loop Obstruction.
7-0-3-5-Gall Bladder Wall Thickening.
7-0-3-6-Peritoneum and mesenteric pathology.

My D.D.Section

My Differential Diagnosis.

6-1-1-Para Sellar Content Diagram.
6-1-2-Normal and Abnormal Prolactin Levels Diagram.
6-1-3-D.D. of Empty Sella.
6-1-4-D.D.of Small Hypo dense Pituitary Lesion.
6-1-5-Supra Sellar Region Structure and Content.
6-1-6-Types of Craniopharyngioma
6-1-7-D.D.of Hyper intense Pituitary Lesion.
6-1-8-D.D.of Supra Sellar Lesion.
6-1-9-How to Report a Case of Pituitary Macro adenoma.
6-2-1-Chest Lesion Classification.
6-2-2-D.D.of Pulmonary Nodules.
6-2-3-D.D.of Pulmonary Masses.
6-2-4-D.D.of Pulmonary Cavitary Lesion.
6-2-5-D.D.of Pulmonary Patches.
6-2-6-Transformation of Glass Ground Pattern.
6-2-7-Single area of Ground Glass Pattern in a Patient with AIDS.
6-2-8-Solitary area of Ground Glass.
6-2-9-Reticular Pattern on CT Imaging.
6-3-1-D.D. between Encephalitis and Encephalopathy.
6-3-2-D.D.between Encephalitis and Middle Cerebral Artery Infarction.
6-3-3-Normal white matter composition.
6-3-4-Virchow-Robin Perivascular Spaces
6-3-5-Deep White Matter Ischemia
6-3-6-Multiple sclerosis
6-3-7-D.D.of white matter disease.
6-3-8-Optic nerve lesions (D.D.)
6-3-9-Optic nerve D.D.
6-4-1-Hippocampal abnormalities (D.D.).
6-4-2-D.D. of peripherally located supratentorial mass in a child or young adult presenting with seisures.

D.D. of Encephalopathy

1-1-6-Non cystic stage of peri ventricular leukomalacia (MR).
1-5-7-X-Linked Adrenoleucodystrophy (MR).
1-6-1-Hypertensive Encephalopathy ( Posterior Reversible Encephalopathy Syndrome)
1-6-3-Anoxic Hypoxic Encephalopathy due to Co Mono Oxide Posioning.
1-6-4-Hereditary Spastic Paraplegia (MR).
1-6-5-Hepatic Encephalopathy (MR).
1-7-3-Ischemic hypoxic encephalopathy (MR).
6-3-1-D.D. between Encephalitis and Encephalopathy.
6-3-2-D.D.between Encephalitis and Middle Cerebral Artery Infarction.

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Brain; Head and Neck Section

Brain; Head and Neck Cases

0-1-1-1-Hypoxic ischemic encepahlopathy (MR). (1)
0-1-1-2-Semi lobar holoprocensephaly (MR). (1)
0-1-1-3-Post cardiac arrest and brain changes (MR). (1)
0-1-1-4-Foramen magnum meningioma (MR). (1)
0-1-1-5-Cerebritis and meningitis (MR). (1)
0-1-1-6-Tuberous sclerosis and giant cell astrocytoma (MR). (1)
0-1-1-7-Absent septum pellucidum (MR). (1)
0-1-1-8-Meningitis; extra axial abscess& post infectious leuko encephalitic changes. (1)
0-1-1-9-Neuro cystecercosis (MR). (1)
0-1-2-1-Pancreatic encephalopathy (MR). (1)
0-1-2-2-TMJ dislocation (MR). (1)
0-1-2-3-Meningo-encephalitis (MR). (1)
0-1-2-4-Alexander disease (MR). (1)
0-1-2-5- Guillain Barre syndrome (1)
1-1-1-Increased intra cranial tension (MR). (1)
1-1-2-Cavernous Angioma (MR). (1)
1-1-3-Pituitary Macro adenoma (MR). (1)
1-1-4-Rathke’s cleft cyst pre and post operative (MR). (1)
1-1-5-Posterior Fossa Arachnoid Cyst (MR). (1)
1-1-5-Temporal lobe arachnoid cyst (MR): (1)
1-1-6-Non cystic stage of peri ventricular leukomalacia (MR). (1)
1-1-7-Coloboma (MR). (2)
1-1-8-Joubert’s syndrome with Dandy walker variant (MR). (1)
1-1-9- Left CP angle meningioma (MR). (1)
1-2-1-Arteriovenous malformation (MR). (1)
1-2-2-Tolosa Hunt Syndrome (MR). (1)
1-2-3-Intra ventricular ependymal cyst (MR). (1)
1-2-4-Parkinsonism disease (MR). (1)
1-2-5-Meningioma (MR). (1)
1-2-6-Holoprosencephaly (MR). (1)
1-2-7-Intra parenchymal neuroglial versus Hydatid cyst (MR). (1)
1-2-8-Viral Encephalitis (MR). (1)
1-2-9-Anoxic hypoxic encephalopathy (MR). (1)
1-3-1-Corpus Callosal Agenesis (MR). (1)
1-3-2-Diffusion imaging and late sub acute brain hemorrhage (MR). (1)
1-3-3-Orbital pseudo tumor (MR). (1)
1-3-4-Brain Metastases (MR). (1)
1-3-5-Sinusitis (CT). (1)
1-3-6-Communicating Hydrocephalus (CT). (1)
1-3-7-Small vessel disease (CT). (1)
1-3-8-Spina Bifida (MR). (1)
1-3-9-Optic Nerve Neuritis (MR). (1)
1-4-1-Post Hemorrhagic Encephalomalacia (MR). (1)
1-4-2-Example of Measurement of Mid Brain / Pons Ratio. (1)
1-4-3-Dilated Virchow Robin Space. (1)
1-4-4- Sub Acute Brain Infarction (MR). (1)
1-4-4-Sub Acute Infarction. (1)
1-4-5-Hemorrhagic Brain. (1)
1-4-6-Non PSP Mid Brain Atrophy (MR). (1)
1-4-7-Increased Intra Cranial pressure (CT). (1)
1-4-8-D.D of Non Enhanced Hyper Intense Signal T1 Pituitary Lesion (MR). (1)
1-4-9-Optic nerve neuritis (MR). (1)
1-5-1-Brain Metastases (MR). (1)
1-5-2-Brain abscess (MR). (1)
1-5-3-Cerebral Arterio-venous Malformation (MR). (1)
1-5-4-Dandy Walker Variant (MR). (1)
1-5-5-Neuromyelitis Optica (MR). (1)
1-5-6-Rupture esophagus (CT). (1)
1-5-7-X-Linked Adrenoleucodystrophy (MR). (1)
1-5-8-Small Vessel Disease and Fazekas Classification. (1)
1-5-9-Otitis Media (CT). (1)
1-6-1-Hypertensive Encephalopathy ( Posterior Reversible Encephalopathy Syndrome) (1)
1-6-2-Cerebellar Low Grade Astrocytoma (MR). (1)
1-6-3-Anoxic Hypoxic Encephalopathy due to Co Mono Oxide Posioning. (1)
1-6-4-Hereditary Spastic Paraplegia (MR). (1)
1-6-5-Hepatic Encephalopathy (MR). (1)
1-6-6-Posterior Circulation Insufficiency (MR). (1)
1-6-7-Embolic infarction (MR). (1)
1-6-8-Fracture Nasal Bone (CT). (1)
1-6-9-Left Oroantral Fistula (CT). (1)
1-6-9-Sinusitis (CT). (1)
1-7-1-Empty Sella Syndrome (MR). (1)
1-7-2-Venous thrombosis and venous infarction (MR). (1)
1-7-3-Ischemic hypoxic encephalopathy (MR). (1)
1-7-4-Supra sella none enhancing mass (MR). (1)
1-7-5-Hereditary spastic paraplegia (MR). (1)
1-7-6-Neurological tuberous sclerosis (MR). (1)
1-7-7-Posterior circulation insufficiency with multiple infractions (MR). (1)
1-7-8-Basi-frontal meningioma (MR). (1)
1-7-9-Congenital atrophy of cerebellum (MR). (1)
1-8-1-Spinal cord infarction (MR). (1)
1-8-2-Parotid gland hemangioma (MR). (1)
1-8-3-Demyelinating and or dismyelinating white matter disease (MR). (1)
1-8-4-Hypoxic ischemic encephalopathy (MR). (1)
1-8-5-Choroid fissure cyst (MR). (1)
1-8-6-Multiple sclerosis (MS). (1)
1-8-7-Central pontine myelinolysis (MR). (1)
1-8-8-Multiple peri ventricular infarcts on the top of ischemic small vessel disease (MR). (1)
1-8-9-Mid brain infarction (MR). (1)
1-9-1-Brain stem glioma (MR). (1)
1-9-2-Right anterior cerebral artery territory infarction (MR). (1)
1-9-3-MRCP (CBD stone). (1)
1-9-4-Hypoxic ischemic encephalopathy (MR). (1)
1-9-5-Spondylo-discitis (MR). (1)
1-9-6-Face of panda sign (Wilson disease). (1)
1-9-7-Meningitis and increased intra cranial hypertension (MR). (1)
1-9-8-Charge's syndrome (MR). (1)
1-9-9-Post operative residual meningioma (MR). (1)

Chest Section:

Chest Cases

2-1-1-Pulmonary Embolism (CT).
2-1-2-Pleural Effusion (CT).
2-1-3-Aortic Aneurysm (CT).
2-1-4-Interstitial Lung Disease (CT).
2-1-5-Lung Segments (CT).
2-1-6-Mediastinal Lymphoma (CT).
2-1-7-Empyema (CT).

Abdominal& Pelvic section.

Abdominal& Pelvic Cases.

3-1-1-adnexal multilocular cyst (CT). (1)
3-1-2-Ruptured Pulmonary Hydatid Cyst (CT). (1)
3-1-3-Generalized Body Water Retension with Cardiomegaly (CT). (1)
3-1-4-Molar Pregnancy (MR). (1)
3-1-5- Rectal Diverticulosis& Sacroilitis (CT). (1)
3-1-6-Hydronephrosis (CT). (1)
3-1-7-Gastritis (CT). (1)
3-1-8-Early pancreatitis (CT). (1)
3-1-9-Necrotic Pancreatitis (CT). (1)
3-2-1-Colo-Enteric Fistula (MR). (1)
3-2-2-Inflammatory Bowel Disease (Crohn's) (CT). (1)
3-2-3-Omental Infarction (CT). (1)
3-2-4-CT Urography for Stone (CT). (1)
3-2-5-CT KUB Neurogenic Bladder (CT). (1)
3-2-6-Liver Cirrhosis and Ascites (CT). (1)
3-2-6-Rupture Bladder (Cystourethrogram) (1)
3-2-7-Renal Calculus (CT). (1)
3-2-8- Hepatic Hemangioma (CT). (1)
3-2-9-Adrenal Adenoma (CT). (1)
3-3-1-Sub Serosal Fibroid (MR). (1)
3-3-2-Jejunal intussusception (CT). (1)

MSK Section

MSK Cases:

4-1-1-Medial meniscal tear (MR):
4-1-2-Torn anterior horn lateral meniscus (MR):
4-1-3-Bucket Handle Tear Lateral Meniscus (MR).
4-1-4-Bertolotti’s Syndrome with type II A Castellvi classification (MR& CT).
4-1-4-Bertolotti’s Syndrome with type II A Castellvi classification.
4-1-5-Temporo-mandibular Joint Dysfunction.
4-1-6-TMJ Dysfunction (MR).
4-1-7-Bertolotti’s Syndrome with type II B Castellvi classification.
4-1-8-Osteochondroma (MR).
4-1-9-Rotator Interval Tear (MR).
4-2-1-Bankart's Lesion (CT).
4-2-2-Bertolotti’s Syndrome with type III B Castellvi classification.
4-2-3-Bertolotti's syndrome type II B Castellvi classification (MR).
4-2-4-Temporo-mandibular dysfunction (MR).
4-2-5-Grade III spondylolisthesis (MR).
4-2-6-Lumbar disc herniation (MR).
4-2-7-Disc herniation with caudal migration and sequestration (MR).
4-2-8- Avascular necrosis of Talus bone (MR).
4-2-9-Torn anterior Tibio-fibular ligament (MR).
4-3-1-Ligamentum flava hypertrophy (MR).
4-3-2-Benign bone lesion (MR).
4-3-3-MRI wrist reporting.
4-3-4-Bertolotti's syndrome (MR).
4-3-5-Juvenile fibromatosis of the hand (MR).
4-3-6-Double posterior cruciate ligament sign (bucket handle tear medial meniscus).
4-3-7-Intra muscular lipoma (MR).
4-3-8-Injured spinal dorsal cord (MR).
4-3-9-Biceps brachii sprain (MR).
4-4-1-Bertolotti’s syndrome type IIB Castellvi classification.
4-4-2: Extra dural synovial cyst (MR).
4-4-3-Active Schmorl's node (MR).
4-4-4-Inter condylar tibial eminence fracture (MR).
4-4-5-Popliteal tendon tenosynovitis (MR).

Bone Section

Bone Cases

5-1-1-Grade III Spondylolisthesis (X-RAY).
5-1-2-Fracture Lateral Malleolus (CT).

Special Protocols

9-1-1-Cavernous Sinus Protocol (MR& CT).
9-1-2-Mid Brain Measurement in PSP.
9-1-3-Bertolotti’s Syndrome
9-1-4-Sub Classification of White Matter Disease.
9-1-5-CT-Algorithm benign versus malignant adrenal masses.
9-1-6-2- Relation between pontine infarction and origin of cranial nerves.
9-1-6-Incidental Cystic Ovarian Mass.
9-1-7-Types of Bankart lesions.
9-1-8-Vesico-ureteric reflux.
9-1-9-In-phase (IP) and out-of-phase (OOF) sequences

Normal Ultrasound Templates:

Doppler study of lower limb arteries

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Saturday, April 30, 2016

Brain diffusion and perfusion.

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