scholarly journals Whole-body diffusion-weighted magnetic resonance imaging versus FDG-PET/CT for initial lymphoma staging: systematic review on diagnostic test accuracy studies

2015 ◽  
Vol 133 (2) ◽  
pp. 141-150 ◽  
Author(s):  
Rodrigo Regacini ◽  
Andrea Puchnick ◽  
David Carlos Shigueoka ◽  
Wagner Iared ◽  
Henrique Manoel Lederman
Keyword(s):  
Magnetic Resonance Imaging ◽  
Systematic Review ◽  
Magnetic Resonance ◽  
Diagnostic Test ◽  
Fdg Pet ◽  
Whole Body ◽  
Test Accuracy ◽  
Resonance Imaging ◽  
Pet Ct ◽  
Fdg Pet Ct

CONTEXT AND OBJECTIVE: Positron emission tomography with [18]F-fluoro-2-deoxyglucose (FDG-PET/CT) has been advocated as the method of choice for lymphoma staging, since it enables whole-body analysis with high sensitivity for detection of affected areas and because it combines capacities for anatomical and functional assessment. With technological advances, magnetic resonance imaging (MRI) has emerged as an alternative to FDG-PET/CT. This systematic review with meta-analysis aimed to compare whole-body diffusion-weighted MRI (WB-MRI) with FDG-PET/CT for lymphoma staging. DESIGN AND SETTING: Systematic review on diagnostic test accuracy studies conducted at a public university. METHODS: The Medline, Scopus, Embase and Lilacs databases were searched for studies published up to September 2013 that compared WB-MRI and FDG-PET/CT for lymphoma staging. The reference lists of included studies were checked for any relevant additional citations. RESULTS: Six studies that evaluated the initial lymphoma staging in 116 patients were included. WB-MRI and FDG-PET/CT agreed in 90.5% of the cases (κ = 0.871; P < 0.0001). In most of the studies, when there was disagreement between the methods, WB-MRI overstaged in relation to FDG-PET/CT. The sensitivity of WB-MRI and FDG-PET/CT, in comparison with the clinical-radiological standard, ranged from 59 to 100% and from 63 to 100% respectively. CONCLUSION: WB-MRI is a highly sensitive method for initial lymphoma staging. It has excellent agreement with FDG-PET/CT and is a great alternative for managing lymphoma patients, without using ionizing radiation or an intravenous contrast agent.

scholarly journals Whole-body magnetic resonance imaging and FDG-PET/CT for lymphoma staging: Assessment of patient experience

2017 ◽  
Vol 48 (4) ◽  
pp. 1043-1047 ◽  
Author(s):  
Domenico Albano ◽  
Francesco Agnello ◽  
Caterina Patti ◽  
Ludovico La Grutta ◽  
Alberto Bruno ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Patient Experience ◽  
Fdg Pet ◽  
Whole Body ◽  
Resonance Imaging ◽  
Pet Ct ◽  
Body Magnetic Resonance Imaging ◽  
Fdg Pet Ct

scholarly journals Tuberculous Encephalitis May Be Undetectable on Magnetic Resonance Imaging but Detectable on 18F-Fluorodeoxyglucose Positron Emission Tomography–Computed Tomography

2021 ◽  
Author(s):  
Boby Varkey Maramattom ◽  
Shagos Gopalan Nair Santhamma
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Magnetic Resonance ◽  
Fdg Pet ◽  
Emission Tomography ◽  
Resonance Imaging ◽  
Positron Emission ◽  
Pet Ct ◽  
Fdg Pet Ct

Neurotuberculosis (NT) continues to be a global health problem with severe morbidity and mortality. The manifestations of NT are well-known and encompass forms such as meningitis, tuberculomas, military tuberculosis, ventriculitis, and brain abscess. Data of all patients with central nervous system tuberculosis who underwent magnetic resonance imaging (MRI) and/or 18F-fluorodeoxyglucose (18F-FDG) positron emission tomography–computed tomography (PET-CT) were analyzed. Over a 7-year period (2014–2021), we encountered three patients who had dense neurological deficits and 18F-FDG PET-CT results suggesting focal cortical encephalitis. 18F-FDG PET-CT demonstrated focal hypermetabolism involving focal–regional areas of the left hemisphere that corresponded to clinical deficits in two of the three patients. Follow-up 18F-FDG PET-CT showed improvement in cortical hypermetabolism in all three patients that corresponded with clinical improvement. MRI of the brain with contrast showed subtle leptomeningeal enhancement in these areas, along with other features of NT, but it could not detect cortical involvement. A literature review also revealed some previous descriptions that seemed to be consistent with tuberculous encephalitis (TbE). TbE seems to be a distinct subset of NT and may coexist with other features of NT or disseminated tuberculosis. It may be detected by 18F-FDG PET-CT even when brain MRI does not show any evident abnormality to explain a focal neurological deficit. 18F-FDG PET-CT can be considered during the evaluation and monitoring of NT to detect TbE. The presence of TbE may affect the prognosis and treatment duration of NT.

scholarly journals 18f-FDG PET/CT helps to find occult carcinoma in a patient with multiple breast masses at magnetic resonance imaging

Mastology ◽  
2019 ◽  
Vol 29 (3) ◽  
pp. 155-157
Author(s):  
Almir Galvão Vieira Bitencourt ◽  
◽  
Luciana Graziano ◽  
Carla Tajima ◽  
Fabiana Baroni Makdissi ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Fdg Pet ◽  
Resonance Imaging ◽  
Breast Masses ◽  
Pet Ct ◽  
18F Fdg ◽  
Fdg Pet Ct

scholarly journals FDG-PET/CT and MR imaging for target volume delineation in rectal cancer radiotherapy treatment planning: a systematic review

2021 ◽  
pp. 1-11
Author(s):  
Elizabeth E. Olanloye ◽  
Aarthi Ramlaul ◽  
Atara I. Ntekim ◽  
Segun S. Adeyemi
Keyword(s):  
Magnetic Resonance Imaging ◽  
Rectal Cancer ◽  
Magnetic Resonance ◽  
Fdg Pet ◽  
Target Volume ◽  
Resonance Imaging ◽  
Target Volume Delineation ◽  
Volume Delineation ◽  
Pet Ct ◽  
Fdg Pet Ct

Abstract Aim: The aim of this systematic review was to synthesise and summarise evidence surrounding the clinical use of fluoro-2-deoxy-d-glucose positron emission tomography/computed tomography (FDG-PET/CT) and magnetic resonance imaging (MRI) for target volume delineation (TVD) in rectal cancer radiotherapy planning. Methods: PubMed, EMBASE, Cochrane library, CINAHL, Web of Science and Scopus databases and other sources were systematically queried using keywords and relevant synonyms. Eligible full-text studies were assessed for methodological quality using the QUADAS-2 tool. Results: Eight of the 1448 studies identified met the inclusion criteria. Findings showed that MRI significantly delineate larger tumour volumes (TVs) than FDG-PET/CT while diffusion-weighted magnetic resonance imaging (DW-MRI) defined smaller gross tumour volumes (GTVs) compared to T2 weighted-Magnetic Resonance Image. CT-based GTVs were found to be larger compared to FDG-PET/CT. FDG-PET/CT also identified new lesions in 15–17% patients and TVs extending outside the routinely used clinical standard CT TV in 29–83% patients. Between observers, delineated volumes were similar and consistent between MRI sequences, whereas interobserver agreement was significantly improved with FDG-PET/CT than CT. Conclusion: FDG-PET/CT and DW-MRI appear to delineate smaller rectal TVs and show improved interobserver variability. Overall, this study provides valuable insights into the amount of attention in the research literature that has been paid to imaging for TVD in rectal cancer.

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