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Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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Radiological investigations are paramount in the diagnosis and management of various pulmonary diseases. Two essential investigations are the Pulmonary Angiogram and the Positron Emission Tomography (PET) Scan.
Pulmonary Angiogram
A Pulmonary Angiogram is an invasive procedure involving injecting a contrast medium through a catheter threaded into the pulmonary artery or the right side of the heart to visualize the pulmonary vasculature. Computed Tomography (CT) scans have mainly replaced this...
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Updated: Aug 8, 2025

Irradiator Commissioning and Dosimetry for Assessment of LQ α and β Parameters, Radiation Dosing Schema, and in vivo Dose Deposition
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LI-RADS: Looking Back, Looking Forward.

Victoria Chernyak1, Kathryn J Fowler1, Richard K G Do1

  • 1From the Department of Radiology, Memorial Sloan-Kettering Cancer Center, New York, NY (V.C., R.K.G.D.); Liver Imaging Group, Department of Radiology, University of California, San Diego, San Diego, Calif (K.J.F., C.S.S., C.B.S.); Department of Radiology, Stanford University Medical Center, Stanford, Calif (A.K.); Department of Medicine and Radiology, University of California, San Diego, San Diego, Calif (Y.K.); Department of Radiology, Radiation Oncology and Nuclear Medicine, Université de Montréal, Montréal, Canada (A.T.); Department of Radiology, Thomas Jefferson University Hospital, Philadelphia, Pa (D.G.M.); and Department of Radiology, Yale Medical School, New Haven, Conn (J.W.).

Radiology
|February 28, 2023
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Summary
This summary is machine-generated.

The Liver Imaging Reporting and Data System (LI-RADS) has significantly advanced since 2011, becoming a comprehensive tool for diagnosing liver cancer. Future developments aim to enhance its accuracy and integrate advanced technologies for better patient outcomes.

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Area of Science:

  • Radiology
  • Oncology
  • Medical Informatics

Background:

  • The Liver Imaging Reporting and Data System (LI-RADS) was initially developed for hepatocellular carcinoma (HCC) diagnosis using CT/MRI.
  • LI-RADS has since expanded to encompass multiple imaging modalities and reporting contexts.
  • It has established a dedicated lexicon, report templates, and supplementary materials.

Purpose of the Study:

  • To review the 11-year evolution and achievements of the LI-RADS system.
  • To identify current knowledge gaps and challenges in LI-RADS application.
  • To outline future directions for LI-RADS development.

Main Methods:

  • Review of LI-RADS development and implementation over 11 years.
  • Analysis of clinical adoption, research impact, and diagnostic system unification.
  • Identification of challenges in surveillance, diagnosis, reporting, and treatment assessment.

Main Results:

  • Global adoption of LI-RADS in clinical practice and research.
  • Unification of HCC diagnostic systems in the United States.
  • Identified challenges including diagnostic complexity, sensitivity limitations, and reporting difficulties.

Conclusions:

  • LI-RADS has achieved significant milestones in liver cancer diagnosis and reporting.
  • Addressing current challenges is crucial for optimizing LI-RADS utility.
  • Future LI-RADS versions will likely be probability-based, integrating diverse data for enhanced diagnosis and prognostication.