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the world of radiology is the world of magic and guessing.

MR Imaging Evaluation of Perianal Fistulas: Spectrum of Imaging Features

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

My Lectures

the world of radiology is the world of magic and guessing.

My Web Site Collection

Favorite Web Sites

C-Spine Injuries + CT Interpretation
Cervical Spine Fracture Evaluation
chirogeek (vertebrae).
D.D. between MS& ADAM disease as periventricular white matter lesions
Diagnosis of Intramedullary Lesions
Head-Neck-Brain-Spine-Imaging
MS MRI (Rad source)
Musculoskeletal Key
Musculoskeletal MRI Anatomy
Radioassistant (Cervical Spine Injury).
Radiology assistant
Start Radiology
w-radiology (radiological anatomy)

Radiology Diagrams

Radiological Diagrams

Medial Cortex Diagrams

Radiology Diamonds:

Radiology Diamonds:

Diamond Rule 1: D.D.of causes of spinal cord lesions.
Diamond Rule 2: D.D.of Causes of Peritoneal Mesenteric Pathology.
Diamond Rule 3: Periventricular lesions help differentiate Neuromyelitis Optica Spectrum from Multiple Sclerosis.
Diamond Rule 4: D.D. of Causes of Dementia.
Diamond Rule 5: D.D. of Anterior Abdominal Wall Hernias.
Diamond Rule 6: D.D. of Adrenal Lesions.
Diamond Rule 7: D.D. of Biliary Radical Dilatation.
Diamond Rule 8: D.D. of Brain Tumors
Diamond Rule 9-0: D.D.Brain Neoplasm (another view).
Diamond Rule 9-1: Brain Tumors MRI Terminology.

Diamond Rule 9-2: D.D. Brain Tumors (third view).
Diamond Rule 9-3: D.D. of Hepatic Focal Lesions.
Diamond Rule 9-4: D.D. Of Orbital Lesions.
Diamond Rule 9-5: D.D. of Hepatic Focal Lesions.

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My Cases

My Cases

Pelvic Floor Prolapse.
Trans-sphincteric fistula

My Lectures

Brain; Head; Neck Lectures:

Multiple Patchy White Matter Lesions D.D.
Patient in Dementia
Systemic Approach of Intramedullary Spinal Lesions
Diagnosis of Intramedullary Spinal Lesions
Alzheimer's disease & Dementia.
Brain Diffusion and Perfusion.
Brain Emergency:Diagnostic Imaging
Classification of White Matter Lesions
Congenital Brain (Quik Review).
CSF Flowmetry
Epilepsy Lecture.
Head & Neck Emergency: Diagnostic Imaging
MAGNIMS consensus on MRI diagnosis of multiple sclerosis
MRI Brain Tumors Terminology
MRI Brain Tumors of Homogeneous Enhancement
MRI Brain Tumors of Heterogeneous Enhancement
D.D. of Brain Tumors (Summary).
MS Dissemination.
Multiple Sclerosis Lecture.
Neonatal Hypoxic Ischemic Encephalopathy
Periventricular White Matter Lesions (PML).
Periventricular White Matter Lesions.
Signal Intensities on T2WI and DWI in Time.
Temporal Bone Lecture.
White Matter Abnormalities
Brain Tumors Another View
Brain Infarction and Ischemia***
Cerebral Hemorrhages***
Cervical Spine Pathology***
Degenerative Brain Diseases***
Brain Tumors Imaging***

Spines Lectures

Sacral Fractures
Cervical Spine Injuries.

Chest and Cardio-vascular Lectures

Chest and Cardiovascular System

Shoulder Joint Lectures:

Anterior Glenohumeral Instability.
Brachial Plexus Lecture.
Labrum & Impingement (shoulder)
MRI of Rotator Interval Capsule

Elbow Joint Lecture

MRI ELBOW

Wrist Joint Lectures

1-X-Ray Wrist Lecture
2-Imaging Key Wrist Ligaments
3-Imaging of Sports-related Hand and Wrist Injuries:

Abdominal Imaging Lectures:

Peritoneum and Mesentry Pathology
Intestinal Obstruction
Abdominal Wall Hernia
Adrenal Lesions Lecture.
Aortic Aneurysm Rupture Lecture.
Appendicitis- Mimics Lecture.
Bile Duct Lecture- Another View.
Causes of Extra and / or Intra Biliary Duct Dilatation Lecture.
Closed Loop Obstruction Lecture.
Comprehensive preoperative assessment of pancreatic carcinoma.
Crohn's Disease Lecture.
Endometriosis Lecture.
Enterography Lecture.
External Abdominal Wall Hernia.
Gall Bladder Wall thickness Lecture.
Hepatic Focal Lesions Lecture.
Incidental Hyper Vascular Hepatic Lesions Lecture.
Liver Mass Characterization Lecture.
Liver Masses Common Tumor Lecture
Liver Segments Lecture.
MRI Anatomy of prostate
Pancreatic Lesions Lecture.
Perianal fistula another view
Recent Advances in Triphasic Hepatic Imaging
Small Bowel Obstruction Lecture.
Splenic Lesions Lecture.
Too Small To Characterize Hepatic Lesion Lecture
Undescended Testicle Lecture

Knee Joint Lectures:

ACL reconstruction
MRI Knee injuries
Posterior Capsular Area of knee
Postero-lateral Knee Instability.

Ankle & Foot Lectures

Ankle MRI Examination
Ankle & Foot Lecture

Female Radiology Lectures

Cancer Cervix Imaging.
Dynamic MR Imaging of the Pelvic Floor: a Pictorial Review
Endometrial Carcinoma.
Ovary: Ovarian Cysts - Common lesions
Placenta Accreta.
Placental Abnormalities

Radiology Pearls

Radiology Pearls

Abdominal Pearls
Abdominal Pearls 1
Brain Pearls
Brain Pearls 1
Brain Pearls 3 (congenital).
Cardio-vascular imaging.
Chest Pearls
Dynamic MR Imaging of the Pelvic Floor: a Pictorial Review
Head and Neck pearls 1
Head and Neck pearls.

MR Imaging Evaluation of Perianal Fistulas: Spectrum of Imaging Features
MR Spectroscopy
MRI MSK Pearls
Musculo-skeletal Pearls
Musculo-skeletal Pearls 1
Pediatric Pearls.
Urinary System

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Diagram Pearls

Diagram: SLE versus Vasculitis.
Diagrams: Corpus Callosal Abnormality.
Diagrams: Grading of Stress Injuries.
Incidental Hypervascular Hepatic Lesions (2).
Para Sellar Content Diagram.

Pediatric Pearls

Pediatric Pearls.

Emergency Pearls

Abdominal and Pelvic Trauma: Misses and Misinterpretations at Multidetector CT: Trauma/Emergency Radiology
Thoracolumbar Spine Injury at CT: Trauma/Emergency Radiology

Musculo-skeletal Pearls.

Bone tumor - ill defined osteolytic tumors and tumor-like lesions
Knee - Meniscus basics
Musculo-skeletal Pearls
Musculo-skeletal Pearls 1
Shoulder Joint Anatomy
Spinal radiology.

Brain Pearls (Friday)

Advanced MR Imaging Techniques in the Diagnosis of Intraaxial Brain Tumors in Adults
Anatomy of the skull.
Brain Pearls
Brain Pearls 1
State-of-the-Art Imaging of Acute Stroke
White Matter Diseases.

Head and Neck Pearls (Sunday).

Head and Neck pearls 1
Head and Neck pearls.

Chest Pearls (Thursday).

Chest Pearls

Cardio-vascular Pearls (Tuesday).

Cardio-vascular imaging.

Abdominal Pearls (Saturday)

Abdominal Pearls
Abdominal Pearls 1
Diffusion-weighted Imaging in the Abdomen and Pelvis: Concepts and Applications
MR Enterography in the Management of Patients with Crohn Disease
MR Imaging Evaluation of Perianal Fistulas: Spectrum of Imaging Features
MR Imaging of Perianal Crohn Disease
Small Bowel Obstruction: What to Look For

Urinary System (Monday).

Urinary System

My Videos

Mamdouh Mahfouz (Brain).

Brain Imaging reporting session (I) - Prof. Dr. Mamdouh Mahfouz (CRD 2019)
Brain Imaging reporting session (II) - Prof. Dr. Mamdouh Mahfouz (CRD 2019)
Brain Imaging reporting session (III) - Prof. Dr. Mamdouh Mahfouz (CRD 2...
Imaging :How to report CT and MRI brain? - Prof. Dr. Mamdouh Mahfouz
Imaging of Brain tumors - Prof. Dr. Mamdouh Mahfouz (CRD 2019)
Imaging of Diffusion weighted MRI of the Brain - Prof. Dr. Mamdouh Mahfouz (CRD 2019)
Imaging of MR Spectroscopy of Brain - Prof. Dr. Mamdouh Mahfouz (CRD 2019)
Imaging of White matter (I) - Prof. Dr. Mamdouh Mahfouz (CRD 2019)
Imaging of White matter (II) - Prof. Dr. Mamdouh Mahfouz (CRD 2019)

Mamdouh Mahfouz (Chest)

0-1-4-Normal CT chest Dr Mamdouh Mahfouz
0-1-5-Imaging of Focal lung lesions (X-Ray chest) - Dr mamdouh mahfouz
0-1-6-Imaging of Diffuse lung diseases - Prof Dr. Mamdouh Mahfouz (In Arabic)
0-1-7-Lung cancer diagnosis and staging Dr Mamdouh Mahfouz
0-1-8-Imaging of mediastinum Dr Mamdouh Mahfouz
0-1-9-Pleura & chest wall imaging Dr Mamdouh Mahfouz -New
0-2-1-Pulmonary vascular lesion Dr Mamdouh Mahfouz
0-2-2-Imaging of chest trauma - Prof Dr. Haney Sami (In Arabic)
0-2-3-DD of thoracic masses - (Dec 2014) Dr Mamdouh Mahfouz (In Arabic)
0-2-4-Virtual Bronchoscopy

0-2-5-TB imaging overview - Dr Mamdouh Mahfouz

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Mamdouh Mahfouz (Abdomen)

0-0-2-Role Of Radiological Imaging In Abdominal trauma - Prof. Dr. Mamdouh Mah...
0-0-3-Radiological Abdominal anatomy - DRE 1 - Prof. Dr. Mamdouh Mahfouz
0-0-4-Imaging of Abdominal trauma - DRE 2 - Dr Mamdouh Mahfouz
0-0-5-Imaging of Acute Abdomen - DRE 3 - Dr Mamdouh Mahfouz
0-0-6-Imaging of the esophagus - DRE 4 - Dr Mamdouh Mahfouz
0-0-7-Imaging of the stomach - DRE 5- Dr Mamdouh Mahfouz
0-0-8-Imaging of the small bowel - DRE 6 - Dr Mamdouh Mahfouz
0-1-1-Imaging of the Liver - DRE 8 - Dr Mamdouh Mahfouz
0-1-2-Imaging of Biliary System - DRE 9 - Dr Mamdouh Mahfouz (New)
0-1-3-Imaging of Pancreas - DRE 10 - Dr Mamdouh Mahfouz (New)

0-1-4-Imaging of the spleen - DRE 11 - Dr Mamdouh Mahfouz
0-1-5-Imaging of the peritoneum - DRE 12 - Dr Mamdouh Mahfouz
0-1-6-Imaging of mesenteric - DRE 13 - Dr Mamdouh Mahfouz
0-1-7-Imaging of Renal anatomy and pathology -DRE 14- Dr Mamdouh Mahfouz
0-1-8-Imaging of Adrenal glands -DRE 16- Dr Mamdouh Mahfouz
0-1-9-GIT Imaging Quiz (I) -Prof Dr. Mamdouh Mahfouz (DRE)
0-2-1-GIT Imaging Quiz (II) -Prof Dr. Mamdouh Mahfouz (DRE)

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Radiology Bits Videos (quick cases).

F-7-RADIOLOGY BITS (SNAPCHAT WEEK 51)
F-8-RADIOLOGY BITS (SNAPCHAT WEEK 52)
F-9-RADIOLOGY BITS (SNAPCHAT WEEK 53)
I-1-RADIOLOGY BITS (INTERACTIVE SNAPCHAT CASE 1 DISCUSSION)
I-2-RADIOLOGY BITS (TIPS & TRICKS 1)
I-3-RADIOLOGY BITS (TIPS & TRICKS 2)
I-4-RADIOLOGY BITS (TIPS & TRICKS 3)
I-5-RADIOLOGY BITS (TIPS & TRICKS 4)
I-6-RADIOLOGY BITS (TIPS & TRICKS 5)
I-7-RADIOLOGY BITS (TIPS & TRICKS 6)

I-8-RADIOLOGY BITS (QUICK CASE 1)
I-9-RADIOLOGY BITS (QUICK CASE 2)
Incidental Hyper Vascular Hepatic Lesions.
J-1-RADIOLOGY BITS (QUICK CASE 3)
J-2-RADIOLOGY BITS (1st CHALLENGE)
J-3-RADIOLOGY BITS (QUICK CASE 4 - ANSWER TO 1st CHALLENGE)
J-4-RADIOLOGY BITS (QUICK CASE 5)
J-5-RADIOLOGY BITS (QUICK CASE 6)
J-6-RADIOLOGY BITS (QUICK CASE 7)
J-7-RADIOLOGY BITS (QUIZ ANSWER ON VIDEO 7)
J-8-RADIOLOGY BITS (QUICK CASE 8)
J-9-RADIOLOGY BITS (QUICK CASE 9)
K-1-RADIOLOGY BITS (QUICK CASE 10)
K-2-RADIOLOGY BITS (QUICK CASE 11)
K-3-RADIOLOGY BITS (QUICK CASE 12)
K-4-RADIOLOGY BITS (QUICK CASE 13)
K-5-RADIOLOGY BITS (QUICK CASE 14)
a-1-RADIOLOGY BITS (QUICK CASE 1)
a-2-RADIOLOGY BITS (TIPS & TRICKS 1)
a-3-RADIOLOGY BITS (SNAPCHAT WEEK 1)
a-4-RADIOLOGY BITS (QUICK CASE 2)
a-5-RADIOLOGY BITS (QUICK CASE 3)
a-6-RADIOLOGY BITS (QUICK CASE 5)
a-7-RADIOLOGY BITS (QUICK CASE 11)
a-8-RADIOLOGY BITS (QUICK CASE 12)
a-9-RADIOLOGY BITS (QUICK CASE 7)
b-1-RADIOLOGY BITS (QUICK CASE 4 - ANSWER TO 1st CHALLENGE)
b-2-RADIOLOGY BITS (QUICK CASE 6)
b-3-RADIOLOGY BITS (QUICK CASE 8)
b-4-RADIOLOGY BITS (QUICK CASE 9)
b-5-RADIOLOGY BITS (QUICK CASE 10)
b-6-RADIOLOGY BITS (QUICK CASE 13)
b-7-RADIOLOGY BITS (QUICK CASE 14)
b-8-RADIOLOGY BITS (SNAPCHAT WEEK 15)
b-9-RADIOLOGY BITS (SNAPCHAT WEEK 16)
c-1-RADIOLOGY BITS (SNAPCHAT WEEK 17)
c-2-RADIOLOGY BITS (SNAPCHAT WEEK 18)
c-3-RADIOLOGY BITS (SNAPCHAT WEEK 19)
c-4-RADIOLOGY BITS (SNAPCHAT WEEK 20)
c-5-RADIOLOGY BITS (SNAPCHAT WEEK 11)
c-6-RADIOLOGY BITS (SNAPCHAT WEEK 12)
c-7-RADIOLOGY BITS (QUICK CASE 12)
c-8-RADIOLOGY BITS (SNAPCHAT WEEK 21)
c-9-RADIOLOGY BITS (SNAPCHAT WEEK 22)
d-1-RADIOLOGY BITS (SNAPCHAT WEEK 23)
d-2-RADIOLOGY BITS (SNAPCHAT WEEK 24)
d-3-RADIOLOGY BITS (SNAPCHAT WEEK 25)
d-4-RADIOLOGY BITS (SNAPCHAT WEEK 26)
d-5-RADIOLOGY BITS (SNAPCHAT WEEK 27)
d-6-RADIOLOGY BITS (SNAPCHAT WEEK 29)
d-7-RADIOLOGY BITS (SNAPCHAT WEEK 30)
d-8-RADIOLOGY BITS (SNAPCHAT WEEK 31)
d-9-RADIOLOGY BITS (SNAPCHAT WEEK 32)
e-1-RADIOLOGY BITS (SNAPCHAT WEEK 33)
e-2-RADIOLOGY BITS (SNAPCHAT WEEK 34)
e-3-RADIOLOGY BITS (SNAPCHAT WEEK 36)
e-4-RADIOLOGY BITS (SNAPCHAT WEEK 37)
e-5-RADIOLOGY BITS (SNAPCHAT WEEK 40)
e-6-RADIOLOGY BITS (SNAPCHAT WEEK 41)
e-7-RADIOLOGY BITS (SNAPCHAT WEEK 42)
e-8-RADIOLOGY BITS (SNAPCHAT WEEK 43)
e-9-RADIOLOGY BITS (SNAPCHAT WEEK 44)
f-1-RADIOLOGY BITS (SNAPCHAT WEEK 45)
f-2-RADIOLOGY BITS (SNAPCHAT WEEK 46)
f-3-RADIOLOGY BITS (SNAPCHAT WEEK 47)
f-4-RADIOLOGY BITS (SNAPCHAT WEEK 48)
f-5-RADIOLOGY BITS (SNAPCHAT WEEK 49)
f-6-RADIOLOGY BITS (SNAPCHAT WEEK 50)
g-1-RADIOLOGY BITS (SNAPCHAT WEEK 55)
g-2-RADIOLOGY BITS (SNAPCHAT WEEK 54)
g-3-RADIOLOGY BITS (SNAPCHAT WEEK 56)
g-4-RADIOLOGY BITS (SNAPCHAT WEEK 57)
g-5-RADIOLOGY BITS (SNAPCHAT WEEK 58)
g-6-RADIOLOGY BITS (SNAPCHAT WEEK 59)
g-7-RADIOLOGY BITS (SNAPCHAT WEEK 60)
g-8-RADIOLOGY BITS (SNAPCHAT WEEK 61)
g-9-RADIOLOGY BITS (SNAPCHAT WEEK 62)
h-1-RADIOLOGY BITS (SNAPCHAT WEEK 63)
h-2-RADIOLOGY BITS (SNAPCHAT WEEK 64)
h-3-RADIOLOGY BITS (SNAPCHAT WEEK 65)
h-4-RADIOLOGY BITS (SNAPCHAT WEEK 66)
h-5-RADIOLOGY BITS (SNAPCHAT WEEK 67)
h-6-RADIOLOGY BITS (SNAPCHAT WEEK 68)
h-7-RADIOLOGY BITS (SNAPCHAT WEEK 69)
h-8-RADIOLOGY BITS (SNAPCHAT WEEK 70)
h-9-RADIOLOGY BITS (INTERACTIVE SNAPCHAT CASE 2 DISCUSSION)

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Anatomy

Anatomy of the skull.
Anatomy.

MRS

Application of MRS.
MR Spectroscopy

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