Robert J. Witte, MD, is PE T/MR Executive Chair and Associate Professor of Radiology at Mayo Clinic in Rochester, MN. He completed his MD at the University
of Nebraska, College of Medicine; finished his fellowship in neuroradiology at Froedtert & The Medical College of Wisconsin; and completed his residency in
radiology at the Nebraska Medical Center. He’s board-certified in Nuclear Medicine, Diagnostic Radiology, and Neuroradiology.
Geoffrey B. Johnson, MD, PhD, is Nuclear Medicine Division Chair and Assistant Professor of Radiology at Mayo Clinic in Rochester, MN. He received his
MD/PhD in Immunology, completed his fellowship in Nuclear Radiology, and finished his residency in Diagnostic Radiology at the Mayo School of Graduate
Medical Education. He’s certified by the American Board of Radiology and the American Board of Nuclear Medicine.
Mayo Clinic is a nonprofit medical practice and medical research group based in Rochester, MN, with additional campuses in Scottsdale and Phoenix, AZ,
and Jacksonville, FL. The health system employs more than 4,500 physicians and scientists and 57,100 allied health staff. Founded in 1889, Mayo Clinic
is committed to clinical practice, education and research, providing expert, whole-person care to everyone who needs healing.
Marie-Odile Habert, MD, is a nuclear medicine physician and senior lecturer at the Public Hospital of Paris, Hospital Pitié-Salpêtrière in Paris, France.
The Hospital Pitié-Salpêtrière is a renowned teaching hospital in Paris, France, and part of the Assistance publique – Hôpitaux de Paris (AP-HP), the largest
hospital system in Europe and one of the largest in the world. The system is comprised of 15,800 physicians working across 44 hospitals, offering services in
52 branches of medicine, serving more than 5 million patients annually.
Patient with temporal lobe epilepsy.
MR initially interpreted as normal. Patient underwent PET/MR, which enabled
direct comparison of structural MR with metabolic PET information.
PET/MR demonstrated mild hypometabolism in the left mesial and anterior
temporal areas, allowing the identification of a subtle left parahippocampal
hyperintensity on T2 images (arrow) consistent with a focal cortical dysplasia.
In this case, PET/MR increased the sensitivity of lesion detection.
Utility of hybrid PET/MR
Images and case courtesy of Hospital Pitié-Salpêtrière.