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Related Concept Videos

Positron Emission Tomography01:29

Positron Emission Tomography

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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...
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Imaging Studies II: Positron Emission Tomography and Scintigraphy01:25

Imaging Studies II: Positron Emission Tomography and Scintigraphy

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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
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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
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Quantitative <sup>99m</sup>Tc-PYP SPECT/CT at 90 minutes improves diagnostic stratification in transthyretin cardiac amyloidosis.

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Clinical value of semi-quantitative parameters in <sup>68</sup>Ga-DOTANOC PET/CT in treatment and diagnostics of cranial meningioma in a single-center retrospective analysis.

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Incidental 18F-PSMA Uptake in a Traumatic Penile Neuroma Detected in a Patient Undergoing PET/CT Imaging for Prostate Cancer.

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Quantification of Atherosclerotic Plaque Activity and Vascular Inflammation using [18-F] Fluorodeoxyglucose Positron Emission Tomography/Computed Tomography FDG-PET/CT
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Stroke Occurring in 18 F-FDG PET/CT Session.

Friedrich Weitzer1, Birgit Pernthaler2, Susanne Stanzel1

  • 1Department of Radiology, Division of Nuclear Medicine, Medical University of Graz.

Clinical Nuclear Medicine
|October 27, 2025
PubMed
Summary
This summary is machine-generated.

18F-FDG PET/CT detected lung adenocarcinoma metastasis in a patient experiencing severe headaches. Subsequent cranial imaging revealed a critical intracerebral hematoma with significant brain shift.

Keywords:
18F-FDG PET/CTbrainintracranial hematomalung cancerstroke

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Non-invasive Imaging and Analysis of Cerebral Ischemia in Living Rats Using Positron Emission Tomography with 18F-FDG
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Non-invasive Imaging and Analysis of Cerebral Ischemia in Living Rats Using Positron Emission Tomography with 18F-FDG
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Non-invasive Imaging and Analysis of Cerebral Ischemia in Living Rats Using Positron Emission Tomography with 18F-FDG

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Area of Science:

  • Nuclear Medicine
  • Neurology
  • Oncology

Background:

  • 18F-FDG PET/CT is a standard imaging modality for cancer staging and restaging.
  • Intracerebral hemorrhage can present with diverse neurological symptoms.

Purpose of the Study:

  • To report a case of incidental finding of intracerebral hematoma during PET/CT for lung cancer restaging.
  • To highlight the utility of PET/CT in detecting acute intracranial events.

Main Methods:

  • Whole-body 18F-FDG PET/CT was performed for lung adenocarcinoma restaging.
  • A dedicated cranial PET/CT scan was conducted due to patient symptoms.
  • Contrast-enhanced cranial CT was performed for further evaluation.

Main Results:

  • Initial PET/CT showed a hypermetabolic lesion in the right lung, suspicious for metastasis.
  • Cranial PET/CT revealed an intracerebral hematoma and glucose hypometabolism in the left occipital lobe.
  • Follow-up CT demonstrated progressive hematoma, midline shift, and tentorial herniation.

Conclusions:

  • 18F-FDG PET/CT can incidentally detect acute intracranial pathology.
  • Prompt recognition of intracerebral hematoma is crucial for timely intervention.
  • This case underscores the importance of considering neurological emergencies during oncologic imaging.