Nasopharyngeal Carcinoma (NPC) : The value of 18-Florine Fluorodeoxyglucose (FDG) Positron Emission Tomography Computed Tomography (PET / CT) in comparison to conventional imaging modalities Computed Tomography (CT) and Magnetic Resonance Imaging (MRI)

10.5580/1294 ◽  
2009 ◽  
Vol 5 (1) ◽  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Nasopharyngeal Carcinoma ◽  
Emission Tomography ◽  
Conventional Imaging ◽  
Resonance Imaging ◽  
Positron Emission ◽  
Pet Ct ◽  
Magnetic Resonance Imaging Mri

scholarly journals Prospective Evaluation of Magnetic Resonance Imaging and [18F]Fluorodeoxyglucose Positron Emission Tomography-Computed Tomography at Diagnosis and Before Maintenance Therapy in Symptomatic Patients With Multiple Myeloma Included in the IFM/DFCI 2009 Trial: Results of the IMAJEM Study

2017 ◽  
Vol 35 (25) ◽  
pp. 2911-2918 ◽  
Author(s):  
Philippe Moreau ◽  
Michel Attal ◽  
Denis Caillot ◽  
Margaret Macro ◽  
Lionel Karlin ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Multiple Myeloma ◽  
Emission Tomography ◽  
Bone Lesions ◽  
Resonance Imaging ◽  
Positron Emission ◽  
Pet Ct ◽  
Ct And Mri

Purpose Magnetic resonance imaging (MRI) and positron emission tomography–computed tomography (PET-CT) are important imaging techniques in multiple myeloma (MM). We conducted a prospective trial in patients with MM aimed at comparing MRI and PET-CT with respect to the detection of bone lesions at diagnosis and the prognostic value of the techniques. Patients and Methods One hundred thirty-four patients received a combination of lenalidomide, bortezomib, and dexamethasone (RVD) with or without autologous stem-cell transplantation, followed by lenalidomide maintenance. PET-CT and MRI were performed at diagnosis, after three cycles of RVD, and before maintenance therapy. The primary end point was the detection of bone lesions at diagnosis by MRI versus PET-CT. Secondary end points included the prognostic impact of MRI and PET-CT regarding progression-free (PFS) and overall survival (OS). Results At diagnosis, MRI results were positive in 127 of 134 patients (95%), and PET-CT results were positive in 122 of 134 patients (91%; P = .33). Normalization of MRI after three cycles of RVD and before maintenance was not predictive of PFS or OS. PET-CT became normal after three cycles of RVD in 32% of the patients with a positive evaluation at baseline, and PFS was improved in this group (30-month PFS, 78.7% v 56.8%, respectively). PET-CT normalization before maintenance was described in 62% of the patients who were positive at baseline. This was associated with better PFS and OS. Extramedullary disease at diagnosis was an independent prognostic factor for PFS and OS, whereas PET-CT normalization before maintenance was an independent prognostic factor for PFS. Conclusion There is no difference in the detection of bone lesions at diagnosis when comparing PET-CT and MRI. PET-CT is a powerful tool to evaluate the prognosis of de novo myeloma.

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 Mesothelioma akibat inhalasi debu asbes

2020 ◽  
Vol 3 (4) ◽  
pp. 193-200
Author(s):  
Tjam Diana Samara ◽  
Meylan Fitriyani ◽  
Paluvi Safitri ◽  
Puti Shahnaz ◽  
Isra Sabrina ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Computed Tomography ◽  
Positron Emission Tomography ◽  
Magnetic Resonance ◽  
Ct Scan ◽  
Pet Scan ◽  
Emission Tomography ◽  
Resonance Imaging ◽  
Positron Emission ◽  
Magnetic Resonance Imaging Mri

Mesothelioma adalah kanker yang berkembang mengenai lapisan paru-paru, adomen, atau jantung. Risiko mesothelioma tidak turun dari waktu kewaktu setelah paparan asbes berhenti. Sebanyak 80% mesothelioma disebabkan oleh inhalasi debu asbes. Masa laten mesothelioma dapat terjadi 10 sampai 50 tahun. Mesothelioma pleura adalah mesothelioma yang paling sering ditemukan dengan gejala sesak nafas, batuk kering, nyeri dada, hemoptoe, mudah lelah, demam disertai keringat terutama malam hari, berat badan menurun, dan efusi pleura. Standar penegakan diagnosis mesothelioma pleura dapat dilakukan dengan beberapa pilihan pemeriksaan antara lain rontgen thoraks, Computed Tomography (CT) Scan, Positron-Emission Tomography (PET) Scan, atau Magnetic Resonance Imaging (MRI). Terapi mesothelioma terutama pada mesothelioma pleural dapat dilakukan pembedahan, kemoterapi, radioterapi atau kombinasi dari keduanya atau lebih atau yang disebut sebagai terapi multimodal. Prognosis untuk kanker mesothelioma umumnya buruk dan banyak pasien yang hidup kurang dari satu tahun.

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