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https://www.readbyqxmd.com/read/28447966/the-prognostic-value-of-preoperative-pet-ct-evaluation-of-maximum-standardized-uptake-value-in-renal-cell-carcinomas
#1
Halil Komek, Serdar Altindag, Canan Can, Nursin Aguloglu, Hasan Morcali, Abidin Tuzun, Seyhmus Kavak
AIM: The use of positron emission tomography (PET/CT) in kidney tumors has increased greatly in recent years. There have been few studies on the effect of SUVmax values detected by PET/CT on the mortality and survival estimation in patients with kidney tumors. In this study, it is hoped to contribute to the literature of research on survival and mortality estimations of kidney tumour patients through an evaluation of SUVmax values measured with PET/CT scan. MATERIAL AND METHODS: A retrospective review was made of the files of 21 patients newly-diagnosed with kidney tumor and with disease staging determined with PET/CT in the Nuclear medicine Department of Saglik Bilimleri University Diyarbakir Gazi Yasargil Training and Research Hospital between August 2007 and April 2012...
2017: Annali Italiani di Chirurgia
https://www.readbyqxmd.com/read/28447112/-imaging-diagnostics-of-breast-metastases-from-extramammary-tumors
#2
REVIEW
S Wienbeck, S Nemat, J Lotz, A Surov
Breast metastases of solid extramammary tumors are very rare in comparison to primary malignancies of the breast and account for only 0.33-6.3% of all malignant neoplasms of the breast. The most common primary tumors are malignant melanoma, distant sarcomas, lung cancer, ovarian cancer, renal cell cancer and thyroid cancer in decreasing order of frequency. This review article summarizes the clinical features and the different imaging findings of breast metastases from different extramammary solid tumors. Breast metastases are often incidental findings in computed tomography (CT) or positron emission tomography CT (PET-CT) imaging...
April 26, 2017: Der Radiologe
https://www.readbyqxmd.com/read/28446999/minimally-invasive-staging-of-esophageal-cancer
#3
REVIEW
Kunal Mehta, Valentino Bianco, Omar Awais, James D Luketich, Arjun Pennathur
Esophageal cancer is one of the most common malignancies in the world today and the sixth-leading cause of cancer-related mortality. Accurate preoperative staging of esophageal cancer is imperative to the selection of appropriate treatments. Patients with esophageal carcinomas typically undergo a multimodality staging process including noninvasive imaging techniques, such as computed tomography (CT) and positron emission tomography (PET), as well as endoscopic ultrasound (EUS), which is slightly more invasive...
March 2017: Annals of Cardiothoracic Surgery
https://www.readbyqxmd.com/read/28446946/neural-imaging-using-single-photon-avalanche-diodes
#4
Mohammad Azim Karami, Misagh Ansarian
INTRODUCTION: This paper analyses the ability of single-photon avalanche diodes (SPADs) for neural imaging. The current trend in the production of SPADs moves toward the minimum dark count rate (DCR) and maximum photon detection probability (PDP). Moreover, the jitter response which is the main measurement characteristic for the timing uncertainty is progressing. METHODS: The neural imaging process using SPADs can be performed by means of florescence lifetime imaging (FLIM), time correlated single-photon counting (TCSPC), positron emission tomography (PET), and single-photon emission computed tomography (SPECT)...
January 2017: Basic and Clinical Neuroscience
https://www.readbyqxmd.com/read/28446289/-value-of-pretherapeutic-18-f-fdg-pet-ct-in-the-diagnosis-staging-and-prognosis-evaluation-of-adult-burkitt-s-lymphoma
#5
Chong-Yang Ding, Hong-Yu Liu, Zhe Guo, Tian-Nyu Li
OBJECTIVE: To investigate the value of pretherapeutic (18)F-FDG PET/CT in the focus detection, staging and prognosis evaluation of adult Burkitt's lymphoma(BL). METHODS: The clinical data and detection results of (18)F-FDG PET/CT scan of 18 patients with BL before the treatment from December 2008 to February 2015 were analyzed retrospectively. The lesions distribution were observed, the maximal standard uptake value(SUVmax) of (18)F-FDG by lesions and the maximal diameter of lymph nodes were measured...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28446288/-values-of-different-evaluation-criteria-of-interim-18-f-fdg-pet-ct-scan-for-prediction-of-prognosis-in-patients-with-dlbcl
#6
Lu-Ting Zhu, Xi-Nan Cen, Jin-Ping Ou, Zhi-Xiang Qiu, Li-Hong Wang, Wei Liu, Wen-Sheng Wang, Yu-Jun Dong, Ze-Yin Liang, Mang-Ju Wang, Wei-Lin Xu, Yu-Hua Sun, Qian Wang, Yue Yin, Han-Yun Ren
OBJECTIVE: To explore the prognostic value of interim (18)F-FDG PET/CT (i-PET/CT) scan for the patients with newly diagnosed diffuse large B-cell lymphoma (DLBCL). METHODS: A total of 70 cases of initially diagnosed of DLBCL by 158 (18)F-FDG PET/CT scans in our hospital were retrospectively analyzed. The 5-point scale, the Lugano classification and maximum standardized uptake value induction (ΔSUVmax) criteria were used respectively to assess i-PET/CT scans. Receiver-operating characteristics (ROC) analysis was used to determine an optimal cutoff for ΔSUVmax...
April 2017: Zhongguo Shi Yan Xue Ye Xue za Zhi
https://www.readbyqxmd.com/read/28445287/prognostic-value-of-pretreatment-18f-fdg-pet-ct-for-nasopharyngeal-carcinoma-patients
#7
Yecai Huang, Mei Feng, Qiao He, Jun Yin, Peng Xu, Qinghua Jiang, Jinyi Lang
BACKGROUND: Nasopharyngeal carcinoma (NPC) is a special subtype of head and neck cancer (HNC). At present, there are no highly specific prognostic markers to aid in tumor grading and guide patient treatment modalities for NPC. The prognostic value of pretreatment F-fluorodeoxyglucose positron emission tomography-computed tomography (F-PET-CT) in NPC patients is controversial and no consensus exists as to its predictive capability. METHODS: To analyze the predictive efficacy of F-PET-CT imaging in NPC patients, data from MEDLINE, EMBASE, the Cochrane library, CBM, CNKI, and VIP (inception to July 2016) were accessed...
April 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28445243/harmonizing-standardized-uptake-value-recovery-between-two-pet-ct-systems-from-different-manufacturers-when-using-resolution-modelling-and-time-of-flight
#8
Ian S Armstrong, Katharine E Thomson, Lisa M Rowley, Daniel R McGowan
PET iterative reconstruction algorithms with resolution modelling (RM) can be used to improve spatial resolution in the images. However, RM has a significant impact on quantification, which raises issues for harmonization across multicentre networks or collaborations. This investigation compared quantification from two modern time-of-flight (TOF) PET/CT systems from different manufacturers with RM with the intention to harmonize recovery. Images of a National Electrical Manufacturers Association image quality phantom with a sphere-to-background concentration ratio of 4 : 1 were acquired on a GE Discovery 710 and a Siemens Biograph mCT and reconstructed with RM and TOF...
April 25, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28444968/carcinoembryonic-antigen-directed-pet-cect-scanning-for-post-operative-surveillance-of-colorectal-cancer
#9
Karthik Chandra Vallam, Guruchannabasavaiah B, Archi Agrawal, Venkatesh Rangarajan, Vikas Ostwal, Reena Engineer, Avanish Saklani
AIM: During the follow-up of surgically resected colorectal cancer (CRC), positron emission tomography-contrast-enhanced computed tomography (PET-CECT) is indicated for asymptomatic elevation of carcinoembryonic antigen (CEA) > 5 ng/ml and no obvious site of recurrence on clinical examination and basic imaging. As an institutional policy, PET-CECT scan was performed at our institute whenever (1) CEA levels rose above 5 ng/ml and (2) CEA values were doubled (even if CEA level was <5 ng/ml)...
April 26, 2017: Colorectal Disease: the Official Journal of the Association of Coloproctology of Great Britain and Ireland
https://www.readbyqxmd.com/read/28444638/nuclear-cardiology-are-we-using-the-right-protocols-and-tracers-the-right-way
#10
REVIEW
Maurizio Dondi, Thomas Pascual, Diana Paez, Andrew J Einstein
The field of nuclear cardiology has changed considerably over recent years, with greater attention paid to safety and radiation protection issues. The wider usage of technetium-99m (Tc-99m)-labeled radiopharmaceuticals for single-photon emission computed tomography (SPECT) imaging using gamma cameras has contributed to better quality studies and lower radiation exposure to patients. Increased availability of tracers and scanners for positron emission tomography (PET) will help further improve the quality of studies and quantify myocardial blood flow and myocardial flow reserve, thus enhancing the contribution of non-invasive imaging to the management of coronary artery disease...
April 25, 2017: American Journal of Cardiovascular Drugs: Drugs, Devices, and Other Interventions
https://www.readbyqxmd.com/read/28444503/comparative-evaluation-of-the-algorithms-for-parametric-mapping-of-the-novel-myocardial-pet-imaging-agent-18-f-fptp
#11
Ji Who Kim, Seongho Seo, Hyeon Sik Kim, Dong-Yeon Kim, Ho-Young Lee, Keon Wook Kang, Dong Soo Lee, Hee-Seung Bom, Jung-Joon Min, Jae Sung Lee
OBJECTIVE: ((18)F-fluoropentyl)triphenylphosphonium salt ((18)F-FPTP) is a new promising myocardial PET imaging tracer. It shows high accumulation in cardiomyocytes and rapid clearance from liver. We performed compartmental analysis of (18)F-FPTP PET images in rat and evaluated two linear analyses: linear least-squares (LLS) and a basis function method (BFM) for generating parametric images. The minimum dynamic scan duration for kinetic analysis was also investigated and computer simulation undertaken...
April 25, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28444102/pet-mri-a-novel-hybrid-imaging-technique-major-clinical-indications-and-preliminary-experience-in-brazil
#12
Taise Vitor, Karine Minaif Martins, Tudor Mihai Ionescu, Marcelo Livorsi da Cunha, Ronaldo Hueb Baroni, Marcio Ricardo Taveira Garcia, Jairo Wagner, Guilherme de Carvalho Campos, Solange Amorim Nogueira, Elaine Gonçalves Guerra, Edson Amaro
In recent years, medical imaging with hybrid techniques has widely accepted and employed in clinical routine. PET/MRI offers significant advantages, including excellent contrast and resolution and reduced ionizing radiation, as compared to well-established PET/CT. Therefore, PET/MRI is a promising modality for oncologic imaging of some regions, such as brain, head and neck, liver and pelvis. This article set out to analyze clinical conditions that could benefit from PET/MRI imaging based on our caseload. The potential of PET/MRI to become the imaging modality of choice for assessment of neurologic and oncologic conditions associated with soft tissues is highlighted...
January 2017: Einstein
https://www.readbyqxmd.com/read/28443145/initial-single-centre-canadian-experience-with-18f-fluoromethylcholine-positron-emission-tomography-computed-tomography-18f-fch-pet-ct-for-biochemical-recurrence-in-prostate-cancer-patients-initially-treated-with-curative-intent
#13
Simon Gauvin, Yannick Cerantola, Eléonore Haberer, Vincent Pelsser, Stephan Probst, Franck Bladou, Maurice Anidjar
INTRODUCTION: We sought to determine predictive factors (patient and prostate-specific antigen [PSA] characteristics) for 18F-fluoromethylcholine positron emission tomography-computed tomography (18F-FCH PET/CT) positivity in the context of biochemical recurrence after local treatment of prostate cancer (PCa) with curative intent. METHODS: This is a retrospective study including 60 18F-FCH PET/CT scans of patients with biochemical recurrence after initial radical prostatectomy (RP), external beam radiation therapy (EBRT), or focal high-intensity focused ultrasound (HIFU) with curative intent...
January 2017: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/28442308/-18-f-fdg-pet-ct-in-aggressive-angiomyxoma-of-the-pelvis
#14
L Gilardi, M Vadrucci, A Pittaro, E Pennacchioli, S Rizzo
No abstract text is available yet for this article.
April 22, 2017: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/28442297/vertebral-and-femoral-bone-mineral-density-and-bone-strength-in-prostate-cancer-patients-assessed-in-phantomless-pet-ct-examinations
#15
Benedikt J Schwaiger, David L Kopperdahl, Lorenzo Nardo, Luca Facchetti, Alexandra S Gersing, Jan Neumann, Kwang J Lee, Tony M Keaveny, Thomas M Link
PURPOSE: Bone fracture risk assessed ancillary to positron emission tomography with computed tomography co-registration (PET/CT) could provide substantial clinical value to oncology patients with elevated fracture risk without introducing additional radiation dose. The purpose of our study was to investigate the feasibility of obtaining valid measurements of bone mineral density (BMD) and finite element analysis-derived bone strength of the hip and spine using PET/CT examinations of prostate cancer patients by comparing against values obtained using routine multidetector-row computed tomography (MDCT) scans-as validated in previous studies-as a reference standard...
April 22, 2017: Bone
https://www.readbyqxmd.com/read/28441370/conventional-modalities-and-novel-emerging-imaging-techniques-for-musculoskeletal-tumors
#16
Meera Raghavan
BACKGROUND: Imaging of musculoskeletal tumors requires a multimodality approach and includes radiography, computed tomography (CT), and magnetic resonance imaging (MRI). METHODS: Topics related to primary bone and soft-tissue tumors are reviewed. The fundamental imaging principles are discussed as well as the applications of emerging imaging modalities. RESULTS: MRI is the preferred technique for the evaluation of musculoskeletal tumors, whereas other imaging modalities play a complementary role...
April 2017: Cancer Control: Journal of the Moffitt Cancer Center
https://www.readbyqxmd.com/read/28439843/effective-dose-estimation-for-oncological-and-neurological-pet-ct-procedures
#17
Josep M Martí-Climent, Elena Prieto, Verónica Morán, Lidia Sancho, Macarena Rodríguez-Fraile, Javier Arbizu, María J García-Velloso, José A Richter
BACKGROUND: The aim of this study was to retrospectively evaluate the patient effective dose (ED) for different PET/CT procedures performed with a variety of PET radiopharmaceutical compounds. PET/CT studies of 210 patients were reviewed including Torso (n = 123), Whole body (WB) (n = 36), Head and Neck Tumor (HNT) (n = 10), and Brain (n = 41) protocols with (18)FDG (n = 170), (11)C-CHOL (n = 10), (18)FDOPA (n = 10), (11)C-MET (n = 10), and (18)F-florbetapir (n = 10)...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28439667/myricetin-induced-brown-adipose-tissue-activation-prevents-obesity-and-insulin-resistance-in-db-db-mice
#18
Tao Hu, Xiaoxue Yuan, Gang Wei, Haoshu Luo, Hyuek Jong Lee, Wanzhu Jin
PURPOSE: Myricetin, a dietary flavonoid, is effective in the treatment of obesity and insulin resistance by increasing glucose transport and lipogenesis in adipocyte and diminishing systemic inflammation in obesity. However, it has not been revealed yet whether myricetin is associated with brown adipose tissue (BAT) activation that tightly mediates systemic energy metabolism. Therefore, this study assessed whether myricetin activated brown adipose tissue in db/db mouse. METHODS: Myricetin (400 mg/kg) in distilled water was fed daily by oral gavage to leptin receptor-deficient db/db male mice at 4 weeks of age for 14 weeks...
April 24, 2017: European Journal of Nutrition
https://www.readbyqxmd.com/read/28439648/evaluation-of-68-ga-dotatoc-pet-mri-for-whole-body-staging-of-neuroendocrine-tumours-in-comparison-with-68-ga-dotatoc-pet-ct
#19
Lino M Sawicki, Cornelius Deuschl, Karsten Beiderwellen, Verena Ruhlmann, Thorsten D Poeppel, Philipp Heusch, Harald Lahner, Dagmar Führer, Andreas Bockisch, Ken Herrmann, Michael Forsting, Gerald Antoch, Lale Umutlu
OBJECTIVES: To compare the diagnostic performance of (68)Ga-DOTATOC PET/MRI and (68)Ga-DOTATOC PET/CT in the whole-body staging of patients with neuroendocrine tumours (NET). METHODS: Thirty patients with histopathologically confirmed NET underwent PET/CT and PET/MRI in a single-injection protocol. PET/CT and PET/MRI scans were prospectively evaluated with regard to lesion count, localization, nature (NET/non-NET), and conspicuity (four-point scale). Histopathology and follow-up imaging served as the reference standards...
April 24, 2017: European Radiology
https://www.readbyqxmd.com/read/28439324/contemporary-diagnostic-imaging-of-oral-squamous-cell-carcinoma-a-review-of-literature
#20
REVIEW
Paulina Pałasz, Łukasz Adamski, Magdalena Górska-Chrząstek, Anna Starzyńska, Michał Studniarek
Oral squamous cell carcinoma (OSCC) is the most common cancer of the oral cavity and constitutes 95% of all cancers of this area. Men are affected twice as commonly as women, primarily if they are over 50 years of age. Forty percent of the lesions are localized in the tongue and 30% in the floor of the oral cavity. OSCC often affects upper and lower gingiva, buccal mucous membrane, the retromolar triangle and the palate. The prognosis is poor and the five-year survival rate ranges from 20% (OSCC in the floor of the mouth) to 60% (OSCC in the alveolar part of the mandible)...
2017: Polish Journal of Radiology
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