Molecular Imaging and Biology最新文献

{"title":"Thymidine Phosphorylase Imaging Probe for Differential Diagnosis of Metabolic dysfunction-associated Steatohepatitis.","authors":"Kei Higashikawa, Riho Uehara, Sawako Horiguchi, Yuki Shibata, Naoto Okubo, Yuki Mizuno, Hironobu Yasui, Shunsuke Ohnishi, Hiroshi Takeda, Yuji Kuge","doi":"10.1007/s11307-024-01964-4","DOIUrl":"10.1007/s11307-024-01964-4","url":null,"abstract":"<p><strong>Purpose: </strong>Metabolic dysfunction-associated steatotic liver disease (MASLD) comprises simple steatosis (SS), which has a low risk of mortality, and metabolic dysfunction-associated steatohepatitis (MASH), which can progress to liver cirrhosis and hepatocellular carcinoma. Because differentiation between MASH and SS is the most important issue in the diagnosis of MASLD, the establishment of noninvasive diagnostic methods is urgently needed. In this study, we evaluated the potential of [¹²³I]IIMU, a thymidine phosphorylase (TYMP) targeted SPECT imaging probe, for differential diagnosis of MASLD in a preclinical animal model.</p><p><strong>Procedures: </strong>SS and MASH mice were prepared by feeding db/db mice with a standard diet and a methionine/choline-deficient diet, respectively. Control mice were prepared by feeding m/m mice with a standard diet. TYMP expression in the liver was evaluated by RT-PCR, western blotting, and immunohistochemistry. The biodistribution of [¹²⁵I]IIMU in the three model mice was evaluated at 30 min post-injection. SPECT/CT imaging studies of the three model mice were performed 30 min after injection of [¹²³I]IIMU.</p><p><strong>Results: </strong>Hepatic TYMP expression level was the highest in the SS mice and the lowest in the MASH mice at both mRNA and protein levels. The immunohistochemistry experiment showed a patchy distribution of TYMP only in the liver of MASH mice. In the biodistribution study, the hepatic accumulation of [¹²⁵I]IIMU was the highest in the SS mice and the lowest in the MASH mice. The SPECT/CT imaging study showed similar results to the biodistribution experiment.</p><p><strong>Conclusion: </strong>Hepatic TYMP expression level may serve as a promising imaging biomarker for differential diagnosis of SS and MASH. SPECT imaging using [¹²³I]IIMU potentially provides a novel noninvasive diagnostic method to differentiate MASH and SS.</p>","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":"1036-1045"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142621731","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Utility of Quantitative Assessment of Tc-99m-diethylenetriamine-penta-acetic acid-galactosyl Human Serum Albumin SPECT/CT in the Identification of Severe Liver Fibrosis: Its Complementary Diagnostic Value with Other Liver Function Indices.","authors":"Yoichi Kozaki, Yasutaka Ichikawa, Satoshi Nakamura, Tatsuhiro Kobayashi, Yoya Tomita, Motonori Nagata, Naohisa Kuriyama, Shugo Mizuno, Hajime Sakuma","doi":"10.1007/s11307-024-01958-2","DOIUrl":"10.1007/s11307-024-01958-2","url":null,"abstract":"<p><strong>Purpose: </strong>To evaluate the value of Tc-99m-diethylenetriamine-penta-acetic acid-galactosyl human serum albumin (^99mTc-GSA) single photon emission computed tomography (SPECT) for assessing liver fibrosis, and to assess its complementary value to other liver function indices such as fibrosis-4 (FIB-4) index and indocyanine green (ICG) clearance test parameters (ICG-R15 and ICG-K).</p><p><strong>Procedures: </strong>Seventy-eight patients with chronic liver disease and hepatocellular carcinoma who underwent ^99mTc-GSA scintigraphy and other liver function tests including ICG test and FIB-4 index prior to hepatectomy were studied. ^99mTc-GSA imaging was performed with SPECT/CT scanner (Discovery NM/CT 670). Immediately after injection of ^99mTc-GSA, dynamic imaging was performed for 20 min, followed by SPECT data acquisition for 6 min. LHL15 which is a conventional index by ^99mTc-GSA planar images, and liver uptake ration (LUR) was measured from ^99mTc-GSA SPECT images. From the liver resection specimens, the degree of liver fibrosis was graded according to the Ludwig scale (F0-4).</p><p><strong>Results: </strong>Significant differences in LUR, LHL15, ICG-R15, ICG-K, platelet count and FIB-4 index were found between the F0-3 and F4 liver fibrosis patient groups (P < 0.05). Multivariate logistic regression analysis revealed that LUR and ICG-K were independent factors for identifying severe liver fibrosis (F4). Area under the curve of receiver operating curve analysis for the logistic regression model using LUR and ICG-K was 0.83. In the patient group with higher FIB-4 (≥ 3.16), the diagnostic performance of LUR for detecting severe liver fibrosis was significantly better than LHL15 (AUC: 0.83 vs. 0.75, P = 0.048). In the high FIB-4 index group, the sensitivity and specificity for identifying F4 was 88% and 85%, respectively, with LUR cutoff value of 41.2%.</p><p><strong>Conclusions: </strong>LUR, measured by ^99mTc-GSA SPECT, is a useful indicator for identifying sever liver fibrosis. Particularly in patients with high FIB-4 index (≥ 3.16), LUR can be a valuable indicator to identify severe liver fibrosis with high diagnostic accuracy.</p>","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":"1027-1035"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142400764","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"In Vivo Detection of Lymph Nodes Metastasis of ESCC Using CXCR4-Targeted Tracer [⁶⁴Cu]Cu-NOTA-CP01.","authors":"Tukang Peng, Zhijun Li, Jiebing Gao, Min Yang, Yifan Qiu, Jianzhong Xian, Lei Bi, Peizhen Ye, Yongshan Liu, Hongjun Jin","doi":"10.1007/s11307-024-01960-8","DOIUrl":"10.1007/s11307-024-01960-8","url":null,"abstract":"<p><strong>Purpose: </strong>Esophageal squamous cell carcinoma (ESCC) frequently exhibits skip metastasis to lymph nodes; however, non-invasive imaging techniques capable of directly visualizing metastatic lymph nodes (MLN) are still lacking. Although biopsy is the clinical standard method, it is invasive and poses risks to patient health. This study aims to detect MLN in an intralymphatic tumor metastasis model of ESCC using the CXCR4-targeted tracer [⁶⁴Cu]Cu-NOTA-CP01.</p><p><strong>Procedures: </strong>The CXCR4 expression in ESCC cell lines was assessed using Western blot and immunofluorescence. An intralymphatic tumor metastasis model was established and monitored using bioluminescence imaging (BLI). Small animal PET studies and biodistribution studies were performed to evaluate the specificity of [⁶⁴Cu]Cu-NOTA-CP01 for MLN. Histopathology evaluation was employed to check for the presence of metastatic tumor cells and to assess CXCR4 expression levels in the metastatic lymph nodes.</p><p><strong>Results: </strong>The intralymphatic tumor metastasis model was successfully established using the EC109/Luc cell line, which exhibited high CXCR4 expression, as verified by BLI. PET/CT imaging showed that the MLN uptakes in the baseline group were significantly inhibited in the blocking group. The ratios of MLN/muscle and MLN/blood were also significantly higher in the baseline group than in the blocking group. Ex vivo PET/CT imaging of MLN corroborated the in vivo data. Biodistribution studies further supported the PET imaging studies, showing rapid clearance of the tracer from the blood and major organs, with significantly higher MLN/muscle and MLN/blood ratios in the baseline group compared to the blocking group. Histopathological staining verified positive CXCR4 expression in these lymph nodes containing metastatic tumor cells.</p><p><strong>Conclusions: </strong>Targeting CXCR4 with [⁶⁴Cu]Cu-NOTA-CP01 for PET imaging of lymph nodes metastasis represents a promising approach that warrants further investigation. These findings have the potential to enhance diagnostic and therapeutic strategies for individuals with lymph nodes metastasis of ESCC.</p>","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":"1046-1056"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142575308","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Comparison Between Prone SPECT-Based Semi-Quantitative Parameters and MBI-Based Semi-Quantitative Parameters in Patients with Locally Advanced Breast Cancer.","authors":"Alina van de Burgt, Floris H P van Velden, Christinne L S Corion, Angela Collarino, Renato A Valdés Olmos, Frits Smit, Lioe-Fee de Geus-Oei, Lenka M Pereira Arias-Bouda","doi":"10.1007/s11307-024-01959-1","DOIUrl":"10.1007/s11307-024-01959-1","url":null,"abstract":"<p><strong>Purpose: </strong>This study evaluates the semi-quantitative single-photon emission computed tomography (SPECT) parameters of prone SPECT using [^99mTc]Tc-sestamibi and compares them with Molecular Breast Imaging (MBI)-derived semi-quantitative parameters for the potential use of response prediction in women with locally advanced breast cancer (LABC).</p><p><strong>Procedures: </strong>Patients with proven LABC with a tumor ≥ 2 cm on mammography and an indication for MBI using [^99mTc]Tc-sestamibi were prospectively enrolled. All patients underwent a prone SPECT/CT at 5 min (early exam) and an additional scan at 90 min (delayed exam) after injection of 600 MBq [^99mTc]Tc-sestamibi to compose wash-out rates (WOR). All patients underwent MBI after early SPECT/CT. Volumes of interest of the primary tumor were drawn semi-automatically on early and delayed SPECT images. Semi-quantitative analysis included maximum and mean standardized uptake values (SUV_max, SUV_mean,), functional tumor volume (FTV_SPECT), total lesion mitochondrial uptake (TLMU), tumor-to-background ratios (TBR_maxand TBR_mean), WOR and coefficient of variation (COV_SPECT). Subsequently, the FTV_SPECT, TBR_SPECT and COV_SPECT were compared to FTV_MBI, TBR_MBI and COV_MBI.</p><p><strong>Results: </strong>Eighteen patients were included. Early SUV_max, and TBR_max showed significantly higher interquartile range (IQR) compared to SUV_mean and TBR_mean, respectively 2.22 (2.33) g/mL, 6.86 (8.69), 1.29 (1.39) g/mL and 3.99 (5.07) (median (IQR), p < 0.05). WOR showed a large IQR (62.28), indicating that there is WOR variation among the LABC patients. FTV showed no difference between MBI and early SPECT semi-quantitative parameter (p = 0.46).</p><p><strong>Conclusions: </strong>In LABC patients it is feasible to obtain semi-quantitative parameters from prone SPECT/CT. The FTV derived from early prone SPECT/CT is comparable with MBI-based FTV. Studies with comprehensive clinical parameters are needed to establish the clinical relevance of these semi-quantitative parameters, including WOR, for response prediction before its use in clinical routine.</p>","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":"926-933"},"PeriodicalIF":3.0,"publicationDate":"2024-12-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11634910/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142624182","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"2023 World Molecular Imaging Congress Program.","authors":"","doi":"10.1007/s11307-024-01907-z","DOIUrl":"https://doi.org/10.1007/s11307-024-01907-z","url":null,"abstract":"","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":""},"PeriodicalIF":3.0,"publicationDate":"2024-10-14","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142470215","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Cryo-Fluorescence Tomography as a Tool for Visualizing Whole-Body Inflammation Using Perfluorocarbon Nanoemulsion Tracers.","authors":"Benjamin I Leach, Deanne Lister, Stephen R Adams, Julie Bykowski, Amy B Schwartz, Patrick McConville, Hemi Dimant, Eric T Ahrens","doi":"10.1007/s11307-024-01949-3","DOIUrl":"10.1007/s11307-024-01949-3","url":null,"abstract":"","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":"900"},"PeriodicalIF":3.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142080925","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Ultrasound Imaging of Macrophages Intracellularly Labelled with Biosynthetic Gas Vesicles.","authors":"Rong Xue, Zhixi Liu, Liang Liu, Shufen Sun, Zheli Gong","doi":"10.1007/s11307-024-01946-6","DOIUrl":"10.1007/s11307-024-01946-6","url":null,"abstract":"<p><strong>Purpose: </strong>This study aimed to develop a novel method for real-time imaging to track macrophages and to make it possible to visually track their dynamic features.</p><p><strong>Procedures: </strong>The archaeon Halobacterium NRC-1 was cultured in an ATCC medium. Buoyant cells were allowed to produce biosynthetic gas vesicles (GVs), and isolated GVs were collected after lysis. Gas vesicle-labelled macrophages (GV@RAWs) were obtained by incubating macrophage (RAW 264.7) cells with GVs. The ability of GV@RAWs to track macrophages in real-time for a long term was assessed using a high-frequency ultrasound imaging system.</p><p><strong>Results: </strong>We successfully synthesised and isolated GV@RAWs by co-incubating them with RAW 264.7. The results showed that GV@RAW produced significant ultrasound signals without affecting cell survival and could achieve real-time imaging for up to 3 days in vitro.</p><p><strong>Conclusion: </strong>This research provides a new way to achieve long-term real-time imaging of macrophages, opening up new possibilities for immune response research, clinical diagnosis and therapeutic strategies for inflammatory diseases.</p>","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":"761-767"},"PeriodicalIF":3.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142093557","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"Correction: Monitoring Immune Cell Function Through Optical Imaging: a Review Highlighting Transgenic Mouse Models.","authors":"Chintan Chawda, Roisin McMorrow, Natasa Gaspar, Giorgia Zambito, Laura Mezzanotte","doi":"10.1007/s11307-024-01930-0","DOIUrl":"10.1007/s11307-024-01930-0","url":null,"abstract":"","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":"901"},"PeriodicalIF":3.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11436389/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141590775","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"A Feasibility Study of [¹⁸F]F-AraG Positron Emission Tomography (PET) for Cardiac Imaging-Myocardial Viability in Ischemia-Reperfusion Injury Model.","authors":"Uttam M Shrestha, Hee-Don Chae, Qizhi Fang, Randall J Lee, Juliet Packiasamy, Lyna Huynh, Joseph Blecha, Tony L Huynh, Henry F VanBrocklin, Jelena Levi, Youngho Seo","doi":"10.1007/s11307-024-01932-y","DOIUrl":"10.1007/s11307-024-01932-y","url":null,"abstract":"<p><strong>Purpose: </strong>Myocardial infarction (MI) with subsequent inflammation is one of the most common heart conditions leading to progressive tissue damage. A reliable imaging marker to assess tissue viability after MI would help determine the risks and benefits of any intervention. In this study, we investigate whether a new mitochondria-targeted imaging agent, ¹⁸F-labeled 2'-deoxy-2'-¹⁸F-fluoro-9-β-d-arabinofuranosylguanine ([¹⁸F]F-AraG), a positron emission tomography (PET) agent developed for imaging activated T cells, is suitable for cardiac imaging and to test the myocardial viability after MI.</p><p><strong>Procedure: </strong>To test whether the myocardial [¹⁸F]-F-AraG signal is coming from cardiomyocytes or immune infiltrates, we compared cardiac signal in wild-type (WT) mice with that of T cell deficient Rag1 knockout (Rag1 KO) mice. We assessed the effect of dietary nucleotides on myocardial [¹⁸F]F-AraG uptake in normal heart by comparing [¹⁸F]F-AraG signals between mice fed with purified diet and those fed with purified diet supplemented with nucleotides. The myocardial viability was investigated in rodent model by imaging rat with [¹⁸F]F-AraG and 2-deoxy-2[¹⁸F]fluoro-D-glucose ([¹⁸F]FDG) before and after MI. All PET signals were quantified in terms of the percent injected dose per cc (%ID/cc). We also explored [¹⁸F]FDG signal variability and potential T cell infiltration into fibrotic area in the affected myocardium with H&E analysis.</p><p><strong>Results: </strong>The difference in %ID/cc for Rag1 KO and WT mice was not significant (p = ns) indicating that the [¹⁸F]F-AraG signal in the myocardium was primarily coming from cardiomyocytes. No difference in myocardial uptake was observed between [¹⁸F]F-AraG signals in mice fed with purified diet and with purified diet supplemented with nucleotides (p = ns). The [¹⁸F]FDG signals showed wider variability at different time points. Noticeable [¹⁸F]F-AraG signals were observed in the affected MI regions. There were T cells in the fibrotic area in the H&E analysis, but they did not constitute the predominant infiltrates.</p><p><strong>Conclusions: </strong>Our preliminary preclinical data show that [¹⁸F]F-AraG accumulates in cardiomyocytes indicating that it may be suitable for cardiac imaging and to evaluate the myocardial viability after MI.</p>","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":"869-878"},"PeriodicalIF":3.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141766811","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

{"title":"The Predictive Role of Metabolic Volume Segmentation Compared to Semiquantitative PET Parameters in Diagnosis of LVAD Infection using [¹⁸F]FDG Imaging.","authors":"Emil Novruzov, Mardjan Dabir, Dominik Schmitt, Katalin Mattes-György, Markus Beu, Yuriko Mori, Christina Antke, Sebastian Reinartz, Artur Lichtenberg, Gerald Antoch, Frederik L Giesel, Hug Aubin, Eduards Mamlins","doi":"10.1007/s11307-024-01937-7","DOIUrl":"10.1007/s11307-024-01937-7","url":null,"abstract":"<p><strong>Purpose: </strong>Left ventricular assisting device (LVAD) is a vital mechanical circulatory assist device for patients with end-stage heart disease, serving as either a bridge to transplantation or palliative destination therapy. Yet device infection represents a major lethal complication, warranting a multi-step, complex therapy approach including an urgent device exchange or heart transplantation. Still, timely diagnosis of site and extent of VAD-specific infection for a proper therapy planning poses challenges in regular clinical care. This single-center, retrospective study aimed to evaluate the impact of volumetric PET parameters with different thresholding compared to semiquantitative PET parameters for accurate diagnosis of VAD-specific infection.</p><p><strong>Procedures: </strong>Seventeen patients (1 female, 16 males; mean age 57 ± 11 years) underwent [¹⁸F]FDG imaging for suspected VAD-specific infection between April 2013 and October 2023. Various metabolic and volumetric PET parameters with different thresholding were collected for specific LVAD components including driveline entry point, subcutaneous driveline, pump pocket, inner cannula and outflow tract. Microbiology and clinical follow-up were used as the final diagnosis standard.</p><p><strong>Results: </strong>Nine of eleven patients with VAD-specific infection underwent urgent heart transplantation, and one had a surgical revision of LVAD. Two patients had non-VAD specific infections, and two had non-VAD related infections. Metabolic burden determination using a fixed absolute threshold provided the best outcome compared to relative thresholding or other metabolic SUV parameters. The total metabolic tumor volume (MTV) cutoff value was 9.3 cm³, and the corresponding sensitivity, specificity, accuracy, and AUC were 90.0%, 71.43%, 82.5%, and 0.814 (95% CI 0.555-0.958), respectively. The total lesion glycolysis (TLG) was 30.6, and the corresponding sensitivity, specificity, accuracy, and AUC were 90.0%, 71.4%, 82.5%, and 0.829 (95% CI 0.571-0.964), respectively.</p><p><strong>Conclusions: </strong>Volumetric PET parameters with fixed absolute thresholding appear to be a valuable auxiliary tool in the evaluation of [¹⁸F]FDG imaging to enhance the diagnostic accuracy of VAD-specific infection.</p>","PeriodicalId":18760,"journal":{"name":"Molecular Imaging and Biology","volume":" ","pages":"812-822"},"PeriodicalIF":3.0,"publicationDate":"2024-10-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://www.ncbi.nlm.nih.gov/pmc/articles/PMC11436428/pdf/","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"141860291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"RegionCategory":"医学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}