Several studies have shown the benefit of fluorine-18 fluorodeoxy glucose (FDG) imaging in the differentiation of solitary pulmonary nodules. The majority of malignant tumor have a higher glucose metabolic rate as compared to benign lesions. However, there is a considerable variety in glucose metabolic rate that depends on the aggressiveness and histological subtype of the tumor. Technetium-99m sestamibi (MIBI) is another tumor imaging agent for SPECT. We present a case of bronchioloalveolar cell carcinoma with a false negative finding in FDG imaging and a positive finding in MIBI imaging. This case clearly indicates that the FDG uptake and MIBI uptake might provide different information regarding characteristics of lung cancer.
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http://dx.doi.org/10.1007/BF03006442 | DOI Listing |
Zhongguo Fei Ai Za Zhi
November 2023
Inner Mongolia People's Hospital, Hohhot 010020, China.
Background: In recent years, immunotherapy represented by programmed cell death 1 (PD-1)/programmed cell death ligand 1 (PD-L1) immunosuppressants has greatly changed the status of non-small cell lung cancer (NSCLC) treatment. PD-L1 has become an important biomarker for screening NSCLC immunotherapy beneficiaries, but how to easily and accurately detect whether PD-L1 is expressed in NSCLC patients is a difficult problem for clinicians. The aim of this study was to construct a Nomogram prediction model of PD-L1 expression in NSCLC patients based on 18F-fluorodeoxy glucose (18F-FDG) positron emission tomography/conputed tomography (PET/CT) metabolic parameters and to evaluate its predictive value.
View Article and Find Full Text PDFJTCVS Tech
October 2022
Department of Surgery, Brigham and Women's Hospital, Harvard Medical School, Boston, Mass.
Asia Ocean J Nucl Med Biol
January 2021
Department of Emergency and General Internal Medicine, Fujita Health University School of Medicine, Japan.
Objectives: Only few studies have assessed the use of gallium citrate-67 single-photon emission computed tomography/computed tomography (Ga-SPECT/CT) for localizing the foci of classic fever of unknown origin (FUO) and inflammation of unknown origin (IUO). Hence, the current study aimed to assess the diagnostic contribution of Ga-SPECT/CT in a tertiary referral setting where nuclear imaging tests are performed after an unsuccessful comprehensive primary diagnostic workup.
Methods: We retrospectively assessed the medical records of 27 adult patients with FUO/IUO who had an unsuccessful diagnostic workup and who underwent Ga-SPECT/CT for the localization of FUO/IUO foci in our university hospital between 2013 and 2019.
Front Med (Lausanne)
June 2021
Department of Nuclear Medicine, Xiangya Hospital, Central South University, Changsha, China.
We investigated whether a fluorine-18-fluorodeoxy glucose positron emission tomography/computed tomography (F-FDG PET/CT)-based radiomics model (RM) could predict the pathological mediastinal lymph node staging (pN staging) in patients with non-small cell lung cancer (NSCLC) undergoing surgery. A total of 716 patients with a clinicopathological diagnosis of NSCLC were included in this retrospective study. The prediction model was developed in a training cohort that consisted of 501 patients.
View Article and Find Full Text PDFJ Korean Med Sci
June 2021
Department of Emergency and General Internal Medicine, Fujita Health University School of Medicine, Toyoake, Japan.
Background: In patients with fever or inflammation of unknown origin (fever of unknown origin [FUO] or inflammation of unknown origin [IUO], respectively), expert consensus recommends the use of positron emission tomography with fluorine-18-fluorodeoxy glucose combined with computed tomography (FDG-PET/CT) when standard work-up fails to identify diagnostic clues. However, the clinical variables associated with successful localization of the cause by FDG-PET/CT remain uncertain. Moreover, the long-term outcomes of patients with unexplained FUO or IUO after negative FDG-PET/CT results are unknown.
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