Critical Imaging Diagnoses: - Radiology
Critical Imaging Diagnoses: - Radiology
Critical Imaging Diagnoses: - Radiology
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31 yo ♀- Multiple Sclerosis<br />
“open ring sign”<br />
Enhance for 3-8 weeks<br />
Summary<br />
Perivenular<br />
Absent vasogenic edema … signal abnormality ends at<br />
inflammation<br />
edge of enhancement & incomplete ring<br />
MR and CT <strong>Imaging</strong> Checklists<br />
MR and CT <strong>Imaging</strong> Checklists<br />
• Anatomic Locations<br />
– Sagittal Images<br />
• Sup. Sag. Sinus<br />
• Corpus Callosum<br />
• Sella Region<br />
• Clivus<br />
– Axial Images<br />
• Skull, Epi/Sub Dural<br />
• SAS<br />
• Cortical Gray Matter<br />
• White Matter<br />
• Deep Gray Matter<br />
• Ventricles<br />
• Morphologic Features<br />
– Mass Effect<br />
• Yes, proportional<br />
• Less than expected<br />
• No mass effect<br />
– Abnormal WM Signal<br />
• Vasogenic Edema<br />
• Demyelination<br />
• Infiltrating neoplasm<br />
– Enhancing Ring Lesion<br />
• Necrotic Neoplasm<br />
• Reactive (e.g. abscess)<br />
• Fluid or Inflammatory<br />
• Anatomic Locations<br />
– Sagittal Images<br />
• Sup. Sag. Sinus<br />
• Corpus Callosum<br />
• Sella Region<br />
• Clivus<br />
– Axial Images<br />
• Skull, Epi/Sub Dural<br />
• SAS<br />
• Cortical Gray Matter<br />
• White Matter<br />
• Deep Gray Matter<br />
• Ventricles<br />
2 y.o. with Lethargy<br />
Cerebral Infarction<br />
MCA<br />
2 hrs of Sx 4 hrs of Sx<br />
MR and CT <strong>Imaging</strong> Checklists<br />
• Anatomic Locations<br />
– Sagittal Images<br />
• Sup. Sag. Sinus<br />
• Corpus Callosum<br />
• Sella Region<br />
• Clivus<br />
– Axial Images<br />
• Skull, Epi/Sub Dural<br />
• SAS<br />
• Cortical Gray Matter<br />
• White Matter<br />
• Deep Gray Matter<br />
• Ventricles<br />
Coma at home after Ice Storm<br />
DWI<br />
ADC<br />
Medial Lenticular – Globus Pallidus
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