PET/computed tomography and PET/MR imaging are used to evaluate the post-treatment neck. Although 18F-FDG is helpful in the staging and treatment response assessment of head and neck cancer, recently developed PET radiotracers targeting specific surface markers are promising for applications of diagnostic problem solving and improved extent delineation. Diffusion-weighted MR imaging is helpful in the differential diagnosis of head and neck neoplasms, and improves the sensitivity and specificity for the detection of certain pathologies. Following standardized imaging parameters for PET/computed tomography and diffusion-weighted imaging in PET/MR imaging improves diagnostic accuracy and allows for future research data mining.
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http://dx.doi.org/10.1016/j.nic.2021.09.003 | DOI Listing |
Biomolecules
January 2025
Department of Radiology, Nemours Children's Health, Delaware, Wilmington, DE 19803, USA.
Tryptophan (Trp)-based radiotracers have excellent potential for imaging many different types of brain pathology because of their involvement with both the serotonergic and kynurenine (KYN) pathways. However, radiotracers specific to the kynurenine metabolism pathway are limited. In addition, historically Trp-based radiopharmaceuticals were synthesized with the short-lived isotope carbon-11.
View Article and Find Full Text PDFTomography
January 2025
Department of Nuclear Medicine & PET, Aarhus University Hospital, 8200 Aarhus, Denmark.
Background: Anesthesia can significantly impact positron emission tomography (PET) neuroimaging in preclinical studies. Therefore, understanding these effects is crucial for accurate interpretation of the results. In this experiment, we investigate the effect of [F]-labeled glucose analog fluorodeoxyglucose ([F]FDG) uptake in the brains of rats anesthetized with two commonly used anesthetics for rodents: isoflurane, an inhalation anesthetic, and Hypnorm-Dormicum, a combination injection anesthetic.
View Article and Find Full Text PDFCurr Radiopharm
January 2025
Department of Nuclear Medicine, Istanbul University-Cerrahpaşa, Cerrahpaşa Faculty of Medicine, Istanbul, Turkey.
Aim: This study intended to compare the radiation dose estimates to target and nontarget liver compartments from 99mTc-MAA SPECT/CT and 90Y-PET/MR scans in liver tumors treated by 90Y-glass microspheres.
Material And Methods: Dose estimation was performed for twenty-three eligible patients (13M, 10F) after 99mTc-MAA simulation using SPECT/CT imaging, and over 90Y-PET/MR images after 90Y-microsphere therapy. Simplicit90Y™ software was used for voxel-based dosimetry over the liver parenchyma.
Neurol Sci
January 2025
Department of Infectious Diseases, Shenzhen Nanshan People's Hospital, Shenzhen University Medical School, Shenzhen, 518052, China.
Background: Glial fibrillary acidic protein (GFAP) astrocytosis is a rare autoimmune encephalitis discovered in the last decade. The diagnosis depends on clinical symptoms, imaging, and antibody testing. However, most cases require several months or even longer to make a definite diagnosis.
View Article and Find Full Text PDFJ Am Heart Assoc
January 2025
Department of Neurosurgery, Center of Pituitary Tumor, Ruijin Hospital Shanghai Jiao Tong University School of Medicine Shanghai China.
Background: Carotid endarterectomy (CEA) is widely used to treat carotid artery stenosis (CAS). However, the effects of CEA on unilateral CAS-induced cognitive impairment and the underlying mechanism remain poorly understood.
Methods And Results: Thirteen patients diagnosed with unilateral severe CAS underwent pre- and post-CEA assessments, including fluoro-2-deoxy-d-glucose positron emission tomography/magnetic resonance imaging, cognitive assessments, and routine blood tests before and after CEA.
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