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@healthlaces
The Humpton Hump Sign
The Humpton Hump SignWedge-shaped peripheral consolidation noted in the right middle zone suggesting pulmonary embolism.There is blunting of the right costophrenic angle consistent with pleural effusion#Radiology #FOAMrad #RadEd #RSNA #ACR
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Types of Tracheoesophageal Fistula (TEF) Explained
Types of Tracheoesophageal Fistula (TEF)Type A (Pure Atresia)ā ļø Gasless abdomen on supine X-ray.ā ļø Not a surgical emergency; staged repair is common.Type B (EA + Proximal Fistula)ā ļø Air is present in the stomach, but the NG tube stops in the proximal pouch.ā ļø High risk of aspiration; keep the infant upright until ligation.Type C (EA + Distal Fistula)ā ļø Most common type (85%); bowel air isā¦
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Types of Tracheoesophageal Fistula (TEF)
Image source: EPOS
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Split Pleura Sign on CT Scan
Split Pleura Sign on CT ScanContrast-enhanced transverse CT scan shows empyema between thickened parietal (arrowheads) and visceral (arrow) pleural layers: the split pleura sign.Image source: RSNA#Radiology #FOAMrad #RadEd #RSNA #ACR
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The Coffee bean sign on X ray
The Coffee bean sign on X rayThe image shows markedly dilated loop of colon with a coffee-bean shape. Its apex points toward the right upper quadrant. Lucency at the right edge of the dilated bowel most likely represent compressed ascending colon.Image source: Case courtesy of Wael Nemattalla, Radiopaedia, rID: 10633#Radiology #FOAMrad #RadEd #RSNA #ACR
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Distribution of Lung (Pulmonary) Consolidation
ā Consolidation is a replacement of alveolar air by fluid, pus, blood, or cellsā In imaging there is an increased pulmonary opacity that obscures the margins of vessels and bronchial wallsHallmark Featuresā Air Bronchogram: Air-filled bronchi become visible as dark, branching structures against opacified lungāa finding pathognomonic for airspace disease.ā Silhouette Sign: Consolidation abutting aā¦
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Ground-Glass Opacity (GGO) Patterns on CT Scan
Ground-Glass Opacity (GGO) is a hazy increased attenuation of the lung that does not obscure the underlying bronchovascular structures.GGO results from ā ļø A partial filling of the airspaces, ā ļø Thickening of the interstitial tissues, ā ļø Partial collapse of alveoli, or ā ļø An increase in capillary blood volume. Essentially, there is less air in the lung per unit volume, but the airspaces are notā¦
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Target sign in Intussusception as seen on ultrasound
Target sign in Intussusception as seen on ultrasoundTransverse sonography of a palpable abdominal mass shows a swirled pattern of alternating hyperechogenicity and hypoechogenicity.This represents the alternating layers of mucosa, muscularis, and serosa seen in intussusception giving it a ātargetā appearance.Case courtesy of Behrang Amini, Radiopaedia, rID: 3456#Radiology #FOAMrad #RadEd #RSNAā¦
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TIRADS Simplified
TIRADS Simplified #Radiology #FOAMrad #RadEd #RSNA #ACR
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Arteriovenous Malformation on MRI
Arteriovenous Malformation on MRIMRI T1W C+: An arteriovenous malformation (AVM) is demonstrated in the right cerebellar hemisphere draining to the vein of Galen. The arterial supply appears to primarily be from the basilar via the superior cerebellar and anterior inferior cerebellar arteries. Case courtesy of Frank Gaillard, Radiopaedia, rID: 5220#Radiology #FOAMrad #RadEd #RSNA #ACR
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Segments of the Internal Carotid Artery
Segments of the Internal Carotid ArteryPcomm = Posterior Communicating ArteryMCA = Middle Cerebral ArteryACA = Anterior Cerebral ArteryImage source: EPOS#Radiology #FOAMrad #RadEd #RSNA #ACR
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Bosniak Classification/Categories of Cystic Renal Masses
Bosniak Classification/Categories of Cystic Renal MassesImage source: Radiology Assistant#Radiology #FOAMrad #RadEd #RSNA #ACR
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The 8 Liver Segments
Liver segmentation following Couinaud classificationKey Advantage: Individual segments can be completely resected without disturbing the others.Numbering: Clockwise on a frontal/coronal view.Each segment has its own:š Central Portal Triad (Portal vein, Hepatic artery, Bile duct)š Peripheral Venous Drainage ā Hepatic veins ā IVCSuperior segments: 2, 4a, 8, 7, 1 (caudate)Inferior segments: 3, 4b,ā¦
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Acute cerebral infarction on MRI
Acute cerebral infarction on MRIMRI with FLAIR, DWI and ADC showing an established infarction in the right basal gangliaImage source: Research gate#Radiology #FOAMrad #RadEd #RSNA #ACR
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Cavernous Malformation
Cavernous MalformationMRI demonstrates typical appearances of a cavernous hemangioma (cavernoma) with a circumscribed lesion with heterogeneous signal but profound signal loss and blooming on gradient echo. No evidence of surrounding edema to suggest a recent bleed. Case courtesy of Frank Gaillard, Radiopaedia, rID: 9773#Radiology #FOAMrad #RadEd #RSNA #ACR
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Intraventricular meningioma
Intraventricular meningiomaThere is a large, vividly and homogeneously mass lesion, part of it appears intraventricular within the trigone of right lateral ventricular and a large part in the adjacent right parietal lobe. The mass is well defined, associated with a significant positive mass effect in the form of mid-line shift into the left side, dilatation of the left lateral ventricle andā¦
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Cerebral Venous Thrombosis
Cerebral Venous ThrombosisContrast enhanced brain CT shows a large filling defect in the posterior superior sagittal sinus demonstrating the empty delta sign, consistent with cerebral venous thrombosis.Image source: Researchgate#Radiology #FOAMrad #RadEd #RSNA #ACR
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