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https://www.readbyqxmd.com/read/29244720/functional-imaging-with-18f-fdg-pet-ct-and-diffusion-weighted-imaging-dwi-in-early-response-evaluation-of-combination-therapy-of-elotuzumab-lenalidomide-and-dexamethasone-in-a-relapsed-multiple-myeloma-patient
#1
Christos Sachpekidis, Antonia Dimitrakopoulou-Strauss, Stefan Delorme, Hartmut Goldschmidt
Elotuzumab is the first monoclonal antibody approved for the treatment of relapsed-refractory multiple myeloma (MM) in combination with lenalidomide, an immunodulatory drug, and dexamethasone. We report on a multiply pre-treated MM patient with disease progression due to appearance of new focal lesions on imaging modalities, who was started on a combination treatment of elotuzumab, lenalidomide, and dexamethasone. After completion of three cycles of the new therapy the patient responded very well with a major decline of serological myeloma activity parameters serum monoclonal protein, kappa light chains, free light chains (FLC) ratio...
December 15, 2017: Diagnostics
https://www.readbyqxmd.com/read/29243665/anthropomorphic-thorax-phantom-for-cardio-respiratory-motion-simulation-in-tomographic-imaging
#2
Konstantin Bolwin, Björn Czekalla, Lynn Johann Frohwein, Florian Buther, Klaus P Schäfers
Patient motion during medical imaging using techniques such as computed tomography (CT), magnetic resonance imaging (MRI), positron emission tomography (PET), or single emission computed tomography (SPECT) is well known to degrade images leading to blurring effects or severe artifacts. Motion correction methods try to overcome this degrading effects. However, they need to be validated under realistic conditions. In the present work, a sophisticated anthropomorphic thorax phantom is presented that combines several aspects of a simulator for cardio-respiratory motion...
December 15, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/29243585/review-the-role-of-radiolabeled-dota-conjugated-peptides-for-imaging-and-treatment-of-childhood-neuroblastoma
#3
Natasha Alexander, Reza Vali, Hojjat Ahmadzadehfar, Amer Shammas, Sylvain Baruchel
Childhood neuroblastoma is a heterogenous disease with varied clinical presentation and biology requiring different approaches to investigation and management. Meta-iodobenzylguanidine (MIBG) is an essential component of metastatic staging for neuroblastoma and has been used as a treatment strategy for relapsed and refractory neuroblastoma. However,10% of children with neuroblastoma will have 123I-MIBG non-avid imaging and up to 60% with relapsed and refractory neuroblastoma will require further treatment with 131I-MIBG, alternative radioisotopes have been investigated for imaging and treatment...
December 14, 2017: Current Radiopharmaceuticals
https://www.readbyqxmd.com/read/29243502/evidence-based-management-of-incidental-focal-uptake-of-fluorodeoxyglucose-on-pet-ct
#4
Deborah Pencharz, Malavika Nathan, Thomas L Wagner
Focal incidental uptake, with or without CT abnormalities, is a common finding on FDG PET/CT and evidence based management for this type of uptake is lacking. This article reviews the evidence on focal incidental uptake including the incidence of malignancy, differential diagnosis and imaging criteria which can be used to further characterise it. The article focusses on PET rather than CT criteria. The strength of the evidence base is highly variable ranging from systematic reviews and meta-analyses to a virtual absence of evidence...
December 15, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/29243072/volume-based-glucose-metabolic-analysis-of-fdg-pet-ct-the-optimum-threshold-and-conditions-to-suppress-physiological-myocardial-uptake
#5
Osamu Manabe, Markus Kroenke, Tadao Aikawa, Atsuto Murayama, Masanao Naya, Atsuro Masuda, Noriko Oyama-Manabe, Kenji Hirata, Shiro Watanabe, Tohru Shiga, Chietsugu Katoh, Nagara Tamaki
OBJECTIVE: FDG PET/CT plays a significant role in the diagnosis of inflammatory heart diseases and cardiac tumors. We attempted to determine the optimal FDG uptake threshold for volume-based analyses and to evaluate the relationship between the myocardial physiological uptake volume in FDG PET and several clinical factors. METHODS: A total of 190 patients were retrospectively analyzed. The cardiac metabolic volume (CMV) was defined as a volume within the boundary determined by a threshold (SUVmean of blood pool × 1...
December 14, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/29242960/incidental-identification-of-osteoid-osteoma-by-68ga-psma-pet-ct
#6
Angelo Castello, Egesta Lopci
No abstract text is available yet for this article.
December 15, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242737/radiation-induced-giant-cell-granuloma-mimicking-relapsed-hodgkin-lymphoma-at-fdg-pet-ct
#7
Hugo J A Adams, John M H de Klerk, Josien C Regelink, Ben G F Heggelman, Stefan V Dubois, Thomas C Kwee
A 22-year-old woman was diagnosed with intermediate risk stage II Hodgkin lymphoma and treated with three cycles of adriamycin, bleomycin, vinblastine, and dacarbazine (ABVD) followed by involved-field radiation therapy. A complete metabolic remission was achieved after two cycles of ABVD, which was maintained until three years after completion of treatment. Follow-up FDG-PET/CT four years after completion of treatment, however, showed a new FDG-avid (Deauville score of 4) lesion in the right scapula, suggesting relapsed disease...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242736/inguinal-herniation-of-urinary-bladder-on-f-18-sodium-fluoride-naf-pet-ct
#8
Sharjeel Usmani, Fahad Marafi, Najeeb Ahmed, Nafisah Kazem
Inguinal herniation of urinary bladder is uncommon and usually an incidental finding in asymptomatic patients. In some of these patients, residual urine volume and consequently, urinary tracer activity can be higher in the herniated bladder than the native bladder, in which case interpretation can be challenging on conventional planar imaging. We describe an interesting case of physiological activity in a herniated bladder simulating a "tear-drop". This case serves an important reminder that whilst F-18 NaF PET-CT has a similar spectrum of urinary activity to conventional bone scintigraphy; morphological correlation on hybrid imaging is invaluable in ensuring the physiological nature of uptake...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242735/microcalcified-hepatic-metastases-incidentally-detected-on-f-18-naf-pet-ct-in-a-patient-with-prostate-cancer
#9
Gul Ege Aktas, Ali Sarıkaya, Nuray Can, Selin Soyluoglu Demir
F-18 NaF PET/CT evaluation has gained importance in recent years. Achievements from F-18 NaF PET/CT are: higher sensitivity of positron imaging, higher target background ratio with higher tracer accumulation in bone hydroxyapatite and higher specificity through CT correlation. These properties have also given directions to new research fields based on imaging microcalcifications, very recently. A limited number of cases have reported the F-18 NaF uptake in macrocalcified soft tissue metastases. Although the presence of microcalcification was not proved; accumulation of F-18 NaF in the metastatic brain lesion with no visible calcification on the CT, in a patient with ductal breast carcinoma has also been reported...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242734/images-from-18f-dopa-scan-in-congenital-hyperinsulinism-not-always-a-clue-for-diagnosis
#10
Evelina Maines, Luca Giacomello, Mirko D'Onofrio, Matteo Salgarello, Rossella Gaudino, Laura Baggio, Andrea Bordugo
Congenital hyperinsulinism (CHI) is the most common cause of persistent hypoglycaemia in childhood (Horm Res 70:65-72, 2008; J Clin Endocr Metab 93:869-875, 2008). 18-Fluoro-L-dihydroxy-phenylalanine (18F-DOPA) positron emission tomography (PET) can detect areas of increased activity in the pancreas and may differentiate focal from diffuse CHI (J Clin Endocr Metab 93:869-875, 2008; Radiology 253:216-222, 2009). We here report the case of a girl who complained of recurrent episodes of severe hypoglycaemia despite previous partial pancreatectomy...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242733/68ga-psma-pet-ct-imaging-of-metastatic-adenoid-cystic-carcinoma
#11
Bart de Keizer, Gerard C Krijger, F Tessa Ververs, Robert J J van Es, Remco de Bree, Stefan Willems
A patient with a history of adenoid cystic carcinoma of the nasal cavity presented himself with bone pain and an elevated PSA level. On suspicion of metastatic prostate cancer a 68Ga-PSMA PET-CT was performed. The PET-CT showed numerous lung and non-sclerotic bone metastasis. Biopsy of a bone metastasis was performed and pathology showed adenoid cystic carcinoma instead of prostate cancer. Immunohistochemical PSMA staining of the primary tumour showed intense PSMA expression in adenoid cystic carcinoma tumour cells...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242731/recurrent-follicular-dendritic-cell-sarcoma-of-the-parotid-gland-imaged-with-18f-fdg-pet-ct
#12
William Makis, E W Hudson, Brian Chiu
Follicular dendritic cell sarcoma (FDCS) is an extremely rare tumor with only 67 cases of head and neck FDCS reported in the literature. A 65-year-old female had a 6-cm follicular dendritic cell sarcoma resected from the left parotid gland with close margins. It recurred 1 year later as a 5-cm mass that was intensely [18F] fluoro-2-deoxy-D-glucose (18F-FDG) avid on positron emission tomography/computed tomography (PET/CT) and was re-excised. A follow-up PET/CT did not show any metastatic disease. The use of 18F-FDG PET/CT in the management of FDCS warrants further research...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242730/unusual-contralateral-axillary-lymph-node-metastasis-in-a-second-primary-breast-cancer-detected-by-fdg-pet-ct-and-lymphoscintigraphy
#13
Ji-Young Kim, Hyunjong Lee, Tae Sung Kim, Han-Sung Kang, Seok-Ki Kim
Contralateral metastatic axillary lymph nodes in a patient with breast cancer is a rare condition. Here, we present a 55-year-old woman with a second primary breast cancer. The patient underwent 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG PET/CT) for staging work-up. Additionally, preoperative lymphoscintigraphy was performed to detect sentinel lymph nodes. FDG PET/CT demonstrated increased FDG uptake in the left nipple and right axillary lymph nodes. Lymphoscintigraphy identified the right axillary lymph nodes which was consistent with the FDG PET/CT findings...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242726/relationship-between-dual-time-point-fdg-pet-ct-and-clinical-prognostic-indexes-in-patients-with-high-grade-lymphoma-a-pilot-study
#14
Do Hyoung Lim, Jai Hyuen Lee
Purpose: This study investigated the correlative relationship between metabolic parameters estimated from dual time point 2-deoxy-2-[18F] fluoro-D-glucose (18F-FDG) positron emission tomography/computerized tomography (PET/CT) and the clinical tools predicting the outcome of a lymphoma. We also measured metabolic and volumetric alterations between early and delayed 18F-FDG PET/CT in patients with high grade lymphoma (HGL). Methods: The samples were 122 lymph nodes and extralymphatic lesions from 26 patients diagnosed with HGL...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242725/68ga-psma-pet-ct-imaging-predicting-intraprostatic-tumor-extent-extracapsular-extension-and-seminal-vesicle-invasion-prior-to-radical-prostatectomy-in-patients-with-prostate-cancer
#15
Christoph-Alexander J von Klot, Axel S Merseburger, Alena Böker, Sebastian Schmuck, Tobias L Ross, Frank M Bengel, Markus A Kuczyk, Christoph Henkenberens, Hans Christiansen, Hans-Jürgen Wester, Wiebke Solass, Marcel Lafos, Thorsten Derlin
Purpose: 68Ga-labeled prostate-specific membrane antigen (PSMA) ligand positron emission tomography/computed tomography (PET/CT) has shown promising results in patients with biochemical recurrence after primary therapy for prostate cancer. In this study, we evaluated the usefulness of PSMA I&T (imaging and therapy) PET/CT prior to radical prostatectomy. Methods: The study population consisted of 21 patients with prostate cancer who underwent 68Ga-PSMA I&T PET/CT before either open or laparoscopic radical prostatectomy...
December 2017: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29242404/head-to-head-comparison-of-68ga-psma-11-pet-ct-and-18f-fluciclovine-pet-ct-in-a-case-series-of-10-patients-with-prostate-cancer-recurrence
#16
Jeremie Calais, Wolfgang P Fendler, Ken Herrmann, Matthias Eiber, Francesco Ceci
Purpose: This is a head-to-head comparison between Gallium-68 Prostate Specific Membrane Antigen (68Ga-PSMA-11) and 18F-Fluciclovine Positron Emission Tomography/Computed Tomography (PET/CT) in a series of 10 patients with prostate cancer (PCa) recurrence. Methods: 288 patients with PCa recurrence were enrolled in a prospective study of 68Ga-PSMA-11 PET/CT imaging for recurrent disease localization (NCT02940262). We retrospectively identified 10 patients who underwent clinical indicated 18F-Fluciclovine PET/CT prior enrollment...
December 14, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29242402/a-new-type-of-prostate-cancer-imaging-will-64cucl2-pet-ct-flourish-or-vanish
#17
Francesco Ceci, Wolfgang Fendler, Matthias Eiber
No abstract text is available yet for this article.
December 14, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29242401/eboni-a-tool-for-automated-quantification-of-bone-metastasis-load-in-psma-pet-ct
#18
Jochen Hammes, Philipp Täger, Alexander Drzezga
PSMA PET/CT has a high diagnostic accuracy for lesion detection in metastatic prostate cancer (MPC), including bone metastases. Novel therapeutic approaches require valid biomarkers for standardized disease staging, progression and therapy response. Here, we introduce EBONI (Evaluation of Bone Involvement), a software to automatically quantify bone metastasis load in PSMA PET/CT. Lesion quantity, mean and maximum lesional standardized uptake value (SUV), Z-Score and percentage of affected bone volume are determined...
December 14, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29242398/actual-impact-of-68ga-psma-11-pet-ct-on-the-management-of-prostate-cancer-patients-with-biochemical-recurrence
#19
Jérémie Calais, Wolfgang P Fendler, Matthias Eiber, Jeannine Gartmann, Fang-I Chu, Nicholas G Nickols, Robert R Reiter, Matthew B Rettig, Leonard S Marks, Thomas E Ahlering, Lynda Huynh, Roger Slavik, Pawan Gupta, Andrew Quon, Martin S Allen-Auerbach, Johannes Czernin, Ken Herrmann
Purpose: In this prospective survey of referring physicians, we investigated whether and how Gallium-68 Prostate Specific Membrane Antigen Positron Emission Tomography/Computed Tomography (PSMA-11 PET/CT) affects the actually implemented management of prostate cancer patients wih biochemical recurrence (BCR). Methods: We conducted a prospective survey of physicians (NCT02940262) who referred 161 patients with prostate cancer BCR (median Prostate Specific Antigen (PSA) value 1.7 ng/ml (range 0.05-202)). Referring physicians completed one questionnaire prior to the scan to indicate the treatment plan without PSMA-11 PET/CT information (Q1; n = 101); one immediately after the scan to denote intended management changes (Q2; n = 101); and one 3 to 6 months later to document the final implemented management (Q3; n = 56)...
December 14, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29240557/impact-of-motion-compensation-and-partial-volume-correction-for-18f-naf-pet-ct-imaging-of-coronary-plaque
#20
J Cal-González, C Tsoumpas, M L Lassen, S Rasul, L Koller, M Hacker, K Schäfers, T Beyer
Recent studies have suggested that 18F-NaF-PET enables visualization and quantification of plaque micro-calcification in the coronary tree. However, PET imaging of plaque calcification in the coronary arteries is challenging because of the respiratory and cardiac motion as well as partial volume effects. The objective of this work is to implement an image reconstruction framework, which incorporates compensation for respiratory as well as cardiac motion (MoCo) and partial volume correction (PVC), for cardiac 18F-NaF PET imaging in PET/CT...
December 14, 2017: Physics in Medicine and Biology
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