Diagnosis of Graft Infection Using FDG PET-CT

Hunbo Shim1, Kiick Sung, Wook Sung Kim

  • 1Department of Thoracic and Cardiovascular Surgery, Samsung Medical Center, Sungkyunkwan University School of Medicine, Korea.

Insights

Diagnosing graft infections after aortic replacement is crucial. Dual-modality positron emission tomography-computed tomography can help identify these severe complications, but false positives require careful interpretation.

Area of Science:

  • Vascular Surgery
  • Infectious Diseases
  • Radiology

Background:

  • Graft infections following aortic replacement are rare but serious complications.
  • Accurate diagnosis is essential for appropriate patient management and preventing unnecessary interventions.

Observation:

  • Two patients with suspected graft infections after aortic replacement were evaluated.
  • Dual-modality positron emission tomography-computed tomography (PET-CT) was utilized for diagnosis.

Findings:

  • One patient received a false-positive diagnosis of graft infection via PET-CT.
  • The other patient was accurately diagnosed with a confirmed graft infection using PET-CT.

Implications:

  • Dual-modality PET-CT can aid in diagnosing aortic graft infections.
  • Careful interpretation is needed to avoid misdiagnosis due to potential false positives.
  • Accurate diagnosis guides timely surgical intervention for confirmed infections.

Related Concept Videos

Radiological Investigation III: Pulmonary Angiogram and PET Scan01:13

Radiological Investigation III: Pulmonary Angiogram and PET Scan

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...
Positron Emission Tomography01:29

Positron Emission Tomography

Positron emission tomography (PET) is a medical imaging technique involving radiopharmaceuticals — substances that emit short-lived radiation. Although the first PET scanner was introduced in 1961, it took 15 more years before radiopharmaceuticals were combined with the technique and revolutionized its potential.
One of the main requirements of a PET scan is a positron-emitting radioisotope, which is produced in a cyclotron and then attached to a substance used by the part of the body being...
Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

Positron Emission Tomography (PET) is a medical imaging technique that provides crucial insights into the body's physiological functions at a molecular level. It is an indispensable resource for diagnosing, staging, and monitoring various illnesses, notably cancer, neurological disorders, and cardiovascular conditions.
Fundamental Principles of PET