Critical Imaging Diagnoses: - Radiology
Critical Imaging Diagnoses: - Radiology Critical Imaging Diagnoses: - Radiology
MR and CT Imaging Checklists • Anatomic Locations – Sagittal Images • Sup. Sag. Sinus • Corpus Callosum • Sella Region • Clivus – Axial Images • Skull, Epi/Sub Dural • SAS • Cortical Gray Matter • White Matter • Deep Gray Matter • Ventricles Acute Pure Motor Hemiplegia MR and CT Imaging Checklists • Anatomic Locations – Sagittal Images • Sup. Sag. Sinus • Corpus Callosum • Sella Region • Clivus – Axial Images • Skull, Epi/Sub Dural • SAS • Cortical Gray Matter • White Matter • Deep Gray Matter • Ventricles 14 yo girl with congenital HIV TOXOPLASMOSIS 14 yo AA girl with congenital HIV and CD4 count of 50 presents with mental status change, high fever, and two weeks of watery diarrhea Toxoplasmosis Left thalamic mass –low attenuation with hyperdense rim; hypointense T2 rim (collagen capsule); smooth, round rim enhancement, surrounding vasogenic edema, restricted diffusion Typical deep gray matter paracentral abscesses with rim enhancement and surrounding edema Toxoplasmosis: Calcification after Treatment MR and CT Imaging Checklists • Anatomic Locations – Sagittal Images • Sup. Sag. Sinus • Corpus Callosum • Sella Region • Clivus – Axial Images • Skull, Epi/Sub Dural • SAS • Cortical Gray Matter • White Matter • Deep Gray Matter • Ventricles 71 yo man with HIV/AIDS Lesions shrinks, vasogenic edema resolves, calcification
1° CNS Lymphoma 71 yo AA man with a history of HIV/AIDS presented with gait instability Low SI mass lesions in the right MCP, left insula, and left thalamus with surrounding vasogenic edema The T1- weighted post gadolinium images show predominantly ring enhancement with areas of central necrosis MR and CT Imaging Checklists • Anatomic Locations – Sagittal Images • Sup. Sag. Sinus • Corpus Callosum • Sella Region • Clivus – Axial Images • Skull, Epi/Sub Dural • SAS • Cortical Gray Matter • White Matter • Deep Gray Matter • Ventricles Coma at home after Ice Storm Medial Lenticular – Globus Pallidus Toxic and Metabolic •Intrinsic –Diabetic Ketoacidosis –Hypoglycemic Coma CO Poisoning: Selective for Globus Pallidus •Extrinsic Toxic Exposure –CO –Methanol, Ethylene Glycol –Solvent Leukoencephalopathy MR and CT Imaging Checklists • Anatomic Locations – Sagittal Images • Sup. Sag. Sinus • Corpus Callosum • Sella Region • Clivus – Axial Images • Skull, Epi/Sub Dural • SAS • Cortical Gray Matter • White Matter • Deep Gray Matter • Ventricles Bruns Syndrome – Positional HA Chronic HA – Acutely Worse Hydrocephalus: Vents > Sulci
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- Page 3 and 4: Lymphoma: hyperdense PCNSL FLAIR Lo
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- Page 19 and 20: T2W - Geographic hyperintensity FLA
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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 />
Acute Pure Motor Hemiplegia<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 />
14 yo girl with congenital HIV<br />
TOXOPLASMOSIS<br />
14 yo AA girl with congenital HIV and CD4 count of 50 presents with<br />
mental status change, high fever, and two weeks of watery diarrhea<br />
Toxoplasmosis<br />
Left thalamic<br />
mass –low<br />
attenuation with<br />
hyperdense rim;<br />
hypointense T2<br />
rim (collagen<br />
capsule); smooth,<br />
round rim<br />
enhancement,<br />
surrounding<br />
vasogenic<br />
edema, restricted<br />
diffusion<br />
Typical deep gray matter paracentral abscesses with rim<br />
enhancement and surrounding edema<br />
Toxoplasmosis: Calcification after Treatment<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 />
71 yo man with HIV/AIDS<br />
Lesions shrinks, vasogenic edema resolves, calcification
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