Table of Contents

Fleischner Criteria (2017)

Source: MacMahon H, Naidich DP, Goo JM, Lee KS, Leung ANC, Mayo JR, Mehta AC, Ohno Y, Powell CA, Prokop M, Rubin GD, Schaefer-Prokop CM, Travis WD, Van Schil PE, Bankier AA. Guidelines for Management of Incidental Pulmonary Nodules Detected on CT Images: From the Fleischner Society 2017. Radiology. 2017 Jul;284(1):228-243. doi: 10.1148/radiol.2017161659. Epub 2017 Feb 23. PMID: 28240562.

Basic Differential for Lung Parenchymal Findings

Case Playlist

Expanded Differential for Ground Glass Opacities

Source: Parekh M, Donuru A, Balasubramanya R, Kapur S. Review of the Chest CT Differential Diagnosis of Ground-Glass Opacities in the COVID Era. Radiology. 2020 Dec;297(3):E289-E302. doi: 10.1148/radiol.2020202504. Epub 2020 Jul 7. PMID: 32633678; PMCID: PMC7350036.

Pulmonary CT Signs and Differential

Source: Raju S, Ghosh S, Mehta AC. Chest CT Signs in Pulmonary Disease: A Pictorial Review. Chest. 2017 Jun;151(6):1356-1374. doi: 10.1016/j.chest.2016.12.033. Epub 2017 Feb 16. PMID: 28212835.

Lymph Node Stations

Annotated CT

General Pulmonary Arterial Anatomy

PE Classification

CategoryCriteriaMortality Rate
MassiveAcute PE with sustained hypotension (< 90mmHg systolic) for >15 minutes OR requiring inotropic support25-65%
SubmassiveSystolic >90mmHg with either findings of right heart strain (CT, ECG, BNP) or elevated troponins3%
Low riskNone of the above<1%
Source: Sista AK, Kuo WT, Schiebler M, Madoff DC. Stratification, Imaging, and Management of Acute Massive and Submassive Pulmonary Embolism. Radiology. 2017;284(1):5-24. doi:10.1148/radiol.2017151978

Normal Aortic Measurements

Acute Aortic Syndrome

Intramural Hematoma

Gutschow SE, Walker CM, Martínez-Jiménez S, Rosado-de-Christenson ML, Stowell J, Kunin JR. Emerging Concepts in Intramural Hematoma Imaging. Radiographics. 2016 May-Jun;36(3):660-74. doi: 10.1148/rg.2016150094. PMID: 27163587.

Reporting Checklist

  • Stanford Classification
  • Maximum aortic diameter (generally >5cm = surgery)
  • Maximal hematoma thickness (generally >11mm = surgery)
  • Presence of intramural blood pool or ulcer like projections
    • Ulcer like projection diameter and depth
  • Presence of
    • Pleural effusion
    • Pericardial effusion
    • Periaortic hematoma

Aortic Dissection

Reporting Checklist

  • Diagnosis
    • Standard dissection
    • Incomplete dissection
  • Distribution
    • Entry and exit tear sites
    • Branch vessel origins from the true/false lumen
    • If type B and endograft may be attempted:
      • Size of the vertebral arteries
      • Distance from the left subclavian to the entry tear
      • Distance from the left common carotid to the left subclavian
  • Complications
    • Rupture
      • Shared sheath rupture
    • Hemopericardium
    • Aortic insufficiency
      • Intimointimal intussusception
    • Coronary involvement
    • Signs of organ ischemia

Traumatic Aortic Injury


MC = most common