23 results
Differential diagnosis of Langerhans cell histiocytosis.
Nodular LCH:
- Sarcoidosis: perilymphatic distribution.
- Metastases: random distribution.
Cystic LCH:
- LAM: round
Differential diagnosis ... central dot. - LIP #Clinical ... #Diagnosis #Radiology ... #CTChest #Cystic ... #Comparison #Table
On the left three different patients with lung cysts.
From left to right: Lymphangiomyomatosis, LIP and Langerhans
patients with lung cysts ... #Clinical #Diagnosis ... #Radiology #CTChest ... #Cystic #Comparison
Low Attenuation pattern 
1. Lymphangiomyomatosis (LAM): uniform cysts in woman of child-bearing age; no history of
Attenuation pattern 1. ... (LAM): uniform cysts ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison
Low Attenuation pattern (2) 
1. Centrilobular emphysema: low attenuation areas without walls. Notice the centrilobular artery
Attenuation pattern (2) 1. ... (LAM): regular cysts ... #Clinical #Radiology ... #HRCT #CTChest ... #Pattern #Comparison
Estimated Medical Radiation Doses for 5 Year-Old Child

3-view ankle	0.0015 mSv	1/14th CXRs
2-view chest	0.02 mSv	1 CXRs
Anteroposterior and lateral
mSv 1 CXRs Anteroposterior ... CT 4 mSv 200 CXRs ... Chest CT 3 mSv ... #PatientInfo #Radiology ... #Nuclear #Comparison
Radiation Dose to Adults from Common Imaging Examinations
ABDOMINAL REGION
 - Computed Tomography (CT) — Abdomen and
1 year - Barium ... ) — Chest 7 mSv ... 1 day HEART ... #PatientInfo #Radiology ... #Nuclear #Comparison
Imaging options for exclusion of PE in pregnant women
The radiation dose required for either V/Q scanning
/Q scanning or CT-PA ... outlined in Table 1 ... #OBGyn #Radiology ... PE #Pregnancy #Workup ... #Imaging #Comparison
Nodular pattern(2)
1. Sarcoidosis: nodules with perilymphatic distribution, along fissures, adenopathy.
2. TB: Tree-in-bud appearance in a patient
Nodular pattern(2) 1. ... before the typical cysts ... #Clinical #Radiology ... #HRCT #CTChest ... Nodular #Pattern #Comparison
High-Res Chest CT Patterns - Differential Diagnosis Framework
Reticular:
 • Septal Thickening: Lymphangitic Carcinoma, Interstitial Edema, Alveolar
High-Res Chest CT ... - Differential Diagnosis ... Smoking, Alpha-1- ... #CT #Patterns # ... #pulmonary #radiology
Cavities frequently arise within a mass or an area of consolidation as a result of necrosis.
We
the differential diagnosis ... measure less than 1 ... #Clinical #Diagnosis ... #Radiology #CTChest ... Emphysema #Comparison