keyword
MENU ▼
Read by QxMD icon Read
search

PET, thyroid

keyword
https://www.readbyqxmd.com/read/29308900/a-18f-labeled-alanine-derivative-serve-as-an-asct2-marker-for-cancer-imaging
#1
Hui Liu, Yuxiang Han, Jiyuan Li, Ming Qin, Qunfeng Fu, Chunhong Wang, Zhibo Liu
Amino acids derivatives are well established molecular probes for diagnosis of a variety of cancer using positron emission tomography (PET). Recently, boramino acid (BAAs) was found as a prospective molecular platform for developing PET tracer. The objective of this study was to develop a 18F-labeled alanine derivative through displacing its carboxylate by trifluoroborate as a selective ASCT2 marker for cancer imaging. 18F-Ala-BF3 was firstly evaluated in healthy FVB/N mice in vivo, exhibiting rapid renal clearance with almost negligible uptake in stomach (1...
January 8, 2018: Molecular Pharmaceutics
https://www.readbyqxmd.com/read/29300866/diagnostic-utility-of-molecular-and-imaging-biomarkers-in-cytological-indeterminate-thyroid-nodules
#2
Elizabeth J de Koster, Lioe-Fee de Geus-Oei, Olaf M Dekkers, Ilse van Engen-van Grunsven, Jaap Hamming, Eleonora P M Corssmit, Hans Morreau, Abbey Schepers, Jan Smit, Wim J G Oyen, Dennis Vriens
Indeterminate thyroid cytology (Bethesda III and IV) corresponds to follicular-patterned benign and malignant lesions, which are particularly difficult to differentiate on cytology alone. As approximately 25% of these nodules harbor malignancy, diagnostic hemithyroidectomy is still custom. However, advanced preoperative diagnostics are rapidly evolving.This review provides an overview of additional molecular and imaging diagnostics for indeterminate thyroid nodules in a pre-operative clinical setting, including considerations regarding cost-effectiveness, availability, and feasibility of combining techniques...
January 2, 2018: Endocrine Reviews
https://www.readbyqxmd.com/read/29299091/oncocytoma-a-differential-consideration-for-an-incidentally-detected-fdg-avid-renal-mass-on-pet-ct
#3
Christopher J Smith, Mindy X Wang, Michael Feely, Brandon Otto, Joseph R Grajo
Renal oncocytoma is a benign renal neoplasm that is often discovered incidentally and closely mimics renal cell carcinoma on common imaging modalities such as computed tomography (CT) and magnetic resonance imaging (MRI). Due to the inability to reliably distinguish between these benign and malignant lesions with imaging, both are typically treated as if they are malignant. Hypermetabolic activity of renal oncocytomas is not frequently encountered because positron emission tomography (PET) is not a standard modality for imaging primary renal tumors...
May 2017: Journal of Radiology Case Reports
https://www.readbyqxmd.com/read/29286396/fabrication-of-fine-electrodes-on-the-tip-of-hypodermic-needle-using-photoresist-spray-coating-and-flexible-photomask-for-biomedical-applications
#4
Joho Yun, Jinhwan Kim, Jong-Hyun Lee
We have introduced a fabrication method for electrical impedance spectroscopy (EIS)-on-a-needle (EoN: EIS-on-a-needle) to locate target tissues in the body by measuring and analyzing differences in the electrical impedance between dissimilar biotissues. This paper describes the fabrication method of fine interdigitated electrodes (IDEs) at the tip of a hypodermic needle using a photoresist spray coating and flexible film photomask in the photolithography process. A polyethylene terephthalate (PET) heat shrink tube (HST) with a wall thickness of 25 µm is employed as the insulation and passivation layer...
November 28, 2017: Journal of Visualized Experiments: JoVE
https://www.readbyqxmd.com/read/29284496/high-cea-levels-in-a-case-of-resected-colorectal-cancer-delayed-diagnosis-of-metachronous-medullary-thyroid-cancer
#5
Shih-Wei Chen, Yen-Kung Chen
BACKGROUND: Carcinoembryonic antigen (CEA) is one of the most widely used tumor markers, and its value in the surveillance of post-operative colorectal cancer is well established. Fluorodeoxyglucose-positron emission tomography (FDG-PET) has been clinically used in colorectal cancer imaging including preoperative staging, evaluation of therapeutic response, detection of disease recurrence, and investigation of unexplained rising tumor markers. CASE PRESENTATION: We report a case of resected colorectal cancer presented with rising CEA levels in 5 years, and FDG-PET revealed no definitive evidence of recurrence except abnormal focal FDG uptake in the right thyroid lobe...
December 29, 2017: World Journal of Surgical Oncology
https://www.readbyqxmd.com/read/29280068/clinical-significance-of-patterns-of-increased-18f-fdg-uptake-in-the-thyroid-gland-a-pictorial-review
#6
REVIEW
Fumihiro Tsubaki, Seiji Kurata, Junichi Tani, Akiko Sumi, Kiminori Fujimoto, Toshi Abe
In the diagnosis and staging of oncologic patients, [18F]-fluorodeoxyglucose positron emission tomography (FDG-PET) is well recognized as an important functional imaging modality. FDG-PET also has been used for cancer screening in healthy individuals. In general, the normal thyroid gland shows absent or low uptake on FDG-PET, which is often identified as an incidental finding on PET. Today, thyroid FDG uptake can be seen in three patterns: diffuse; focal; and diffuse-plus-focal. Diffuse thyroid uptake is mainly considered an indicator of chronic thyroiditis...
December 27, 2017: Japanese Journal of Radiology
https://www.readbyqxmd.com/read/29278520/malignant-struma-ovarii-harboring-a-unique-nras-mutation-case-report-and-review-of-the-literature
#7
Carlo Gobitti, Alessandro Sindoni, Chiara Bampo, Tanja Baresic, Giorgio Giorda, Lara Alessandrini, Vincenzo Canzonieri, Giovanni Franchin, Eugenio Borsatti
Struma ovarii (SO), a rare tumor containing at least 50% of thyroid tissue, represents approximately 5% of all ovarian teratomas; its malignant transformation rate is reported to occur in up to 10% of cases and metastases occur in about 5-6% of them. We describe a 36-year old woman who underwent laparoscopic left annessectomy two years earlier because of an ovarian cyst. Follow-up imaging revealed a right adnexal mass, ascitis and peritoneal nodes that were diagnosed as comprising a malignant SO with peritoneal secondary localizations at histopathology performed after intervention...
July 2017: Hormones: International Journal of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29261627/incidental-detection-of-medullary-thyroid-carcinoma-by-68ga-dotatate-pet-ct-in-a-patient-with-neuroendocrine-tumor-liver-metastases
#8
Sonia Mahajan, Ashok Shaha, Ravinder K Grewal
Ga-DOTATATE, a positron-emitting somatostatin analog, has been approved by the Food and Drug Administration for imaging neuroendocrine tumors (NETs). The presence of a second primary malignancy is common in NETs; however, synchronous primary malignancy in the thyroid has rarely been reported. The value of Ga-DOTATATE in medullary thyroid cancer is being investigated and is currently recommended for use when treatment with somatostatin analogs is an option. We present a 55-year-old man with abdominal pain associated with well-differentiated NET liver metastases and incidental medullary thyroid carcinoma demonstrated on a Ga-DOTATATE PET/CT...
December 19, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29243502/evidence-based-management-of-incidental-focal-uptake-of-fluorodeoxyglucose-on-pet-ct
#9
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/29234267/incidental-detection-of-occult-thyroid-carcinoma-with-11c-choline-pet-ct-for-high-risk-prostate-cancer
#10
Adama Ouattara, Tiago Ribeiro de Oliveira, Serge Holz, Hannes Van den Bossche, David Strybol, Christophe Assenmacher, Wouter Everaerts, Gert De Meerleer, Steven Joniau
We report a case of a 65-year-old male patient with high-risk prostate cancer, re-staged with 11C-choline positron emission tomography/computed tomography (PET/CT) for prostate specific antigen recurrences 3 years after radical prostatectomy and adjuvant radiation therapy. In addition to 2 suspicious presacral lymph nodes which were resected and proven to be metastatic, PET/CT revealed a very high uptake in a calcified thyroid nodule. Evaluation with fine needle aspiration was suspicious for thyroid carcinoma and the patient underwent total thyroidectomy, confirming a non-metastatic encapsulated follicular variant of papillary thyroid carcinoma...
November 2017: Current Urology
https://www.readbyqxmd.com/read/29209734/effects-of-hypothyroidism-on-serotonin-1a-receptors-in-the-rat-brain
#11
Jae-Hoon Lee, Minkyung Lee, Ji-Ae Park, Young Hoon Ryu, Kyo Chul Lee, Kyeong Min Kim, Jae Yong Choi
PURPOSE: We investigated the effects of hypothyroidism on serotonin 1A receptors in the rat brain in vivo. METHODS: Five surgically thyroidectomized male Sprague-Dawley (SD) rats and five hypophysectomized SD rats were used as animal models of hypothyroidism; the same number of sham-operated SD rats served as age-matched controls. After hypothyroidism was confirmed by thyroid function tests, serotonin positron emission tomography (PET) was performed for 120 min...
December 5, 2017: Psychopharmacology
https://www.readbyqxmd.com/read/29201490/18f-fdg-pet-guided-external-beam-radiotherapy-in-iodine-refractory-differentiated-thyroid-cancer-a-pilot-study
#12
Eleonora Farina, Fabio Monari, Paolo Castellucci, Fabrizio Romani, Andrea Repaci, Arianna Farina, Giuseppe Zanirato Rambaldi, Giovanni Frezza, Renzo Mazzarotto, Silvia Cammelli, Luca Tagliaferri, Rosa Autorino, Francesco Deodato, Gabriella Macchia, Savino Cilla, Vincenzo Valentini, Stefano Fanti, Alessio G Morganti
Introduction: To evaluate the clinical response rate after a postoperative 18F-FDG PET/CT guided external beam radiotherapy (EBRT) in Iodine-refractory differentiated thyroid cancer. Material and Methods: Patients with thyroid cancer locally recurrent after total thyroidectomy plus metabolic radiotherapy and treated with radical EBRT were included. Inclusion criteria were detectable thyroglobulin (Tg), negative postmetabolic radiotherapy whole body scintigraphy, and no surgical indications...
2017: Journal of Thyroid Research
https://www.readbyqxmd.com/read/29198608/synthesis-and-evaluation-of-18f-hexafluorophosphate-as-a-novel-pet-probe-for-imaging-of-sodium-iodide-symporter-in-a-murine-c6-glioma-tumor-model
#13
Huailei Jiang, Aditya Bansal, Ribu Goyal, Kah-Whye Peng, Stephen J Russell, Timothy R DeGrado
Noninvasive imaging of iodide uptake via the sodium/iodide symporter (NIS) has received great interest for evaluation of thyroid cancer and reporter imaging of NIS-expressing viral therapies. In this study, we investigate 18F-labeled hexafluorophosphate (HFP or PF6-) as a high-affinity iodide analog for NIS imaging. 18F-HFP was synthesized by radiofluorination of phosphorus pentafluoride·N-methylpyrrolidine complex and evaluated in human NIS (hNIS)-expressing C6 glioma cells and a C6 glioma xenograft mouse model...
November 23, 2017: Bioorganic & Medicinal Chemistry
https://www.readbyqxmd.com/read/29173938/evaluation-of-incidental-thyroid-nodules-in-cancer-patients
#14
Güven Barış Cansu, Nusret Yılmaz, Serap Toru, Ramazan Sarı, Güzide Gökhan Ocak, Cumhur Arıcı, Hasan Ali Altunbaş, Mustafa Kemal Balcı
OBJECTIVE: Frequency of thyroid cancer in incidental thyroid nodules identified by imaging techniques in cancer patients is higher than that in the normal population. In the retrospective study, we have both investigated the incidence of thyroid cancer in incidentally identified nodules and compared the imaging techniques to determine whether there is any difference between them in detection of malign nodules. METHODS: A total of 7319 patients who underwent thyroid fine-needle aspiration biopsy (FNAB) were included in the study...
January 2017: Journal of the National Medical Association
https://www.readbyqxmd.com/read/29166452/is-the-18f-fdg-pet-ct-the-definite-resource-to-detect-the-recurrence-on-high-risk-thyroid-cancer-patients
#15
EDITORIAL
Carlos Alberto Buchpiguel
No abstract text is available yet for this article.
October 2017: Archives of Endocrinology and Metabolism
https://www.readbyqxmd.com/read/29160180/incidental-findings-on-fdg-pet-ct-in-head-and-neck-cancer
#16
Christopher J Britt, Austin M Maas, Tabassum A Kennedy, Gregory K Hartig
Objective 18F-fluoro-deoxy-glucose positron emission tomography/computed tomography (FDG PET/CT) imaging is common in head and neck cancer and often identifies incidental findings that necessitate additional patient evaluations. Our goal was to assess the frequency and nature of these incidental imaging findings on FDG-PET/CT. Study Design Retrospective cohort study. Setting Tertiary medical center. Subjects and Methods All patients with head and neck cancer who had undergone FDG-PET/CT imaging between January 2014 and June 2015 at our institution were evaluated for incidental findings...
November 1, 2017: Otolaryngology—Head and Neck Surgery
https://www.readbyqxmd.com/read/29144823/the-relationship-of-braf-v600e-mutation-status-to-fdg-pet-ct-avidity-in-thyroid-cancer-a-review-and-meta-analysis
#17
Prasanna Santhanam, Rodhan Khthir, Lilja B Solnes, Paul W Ladenson
OBJECTIVES: Papillary thyroid cancers harboring BRAF (V600E) gene mutation have been shown to exhibit aggressive tumor behaviors and higher risks of recurrence and disease-specific death. In this systematic review and meta-analysis, we examine and report published evidence related to the accuracy of FDG-PET-CT in detection of residual disease in patients' with BRAF (V600E) mutated thyroid cancer. METHODS: We extracted data from PUBMED/MEDLINE and EMBASE from January, 1995 to March, 2017...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29144798/pancreas-metastases-from-papillary-thyroid-carcinoma-a-review-of-the-literature
#18
Maja Davidson, Randall J Olsen, April A Ewton, Richard J Robbins
OBJECTIVE: Although loco-regional metastases occur in 5-10% of patients with papillary thyroid cancer (PTC), distant metastases are rare, especially to the pancreas. Here we review the literature regarding metastases to the pancreas from PTC and present an illustrative patient. METHODS: The literature search was performed through www.pubmed.org . The information regarding our illustrative case was obtained from the medical records of our institution. RESULTS: Since 1991, 11 cases of pancreas metastases of PTC have been reported...
November 16, 2017: Endocrine Practice
https://www.readbyqxmd.com/read/29140118/-11-c-choline-pet-ct-for-detection-and-localization-of-parathyroid-adenomas
#19
Ahmad Parvinian, Erica L Martin-Macintosh, Ajit H Goenka, Jolanta M Durski, Brian P Mullan, Brad J Kemp, Geoffrey B Johnson
OBJECTIVE: The purpose of this study is to determine the efficacy of (11)C-choline PET/CT for the detection of parathyroid adenomas by retrospectively reviewing a large patient population. MATERIALS AND METHODS: In this single-institution retrospective study, 7088 (11)C-choline PET/CT scans performed of 2933 men with prostate cancer from January 2005 through February 2016 were evaluated. Patients with suspected parathyroid adenomas were identified through a review of the electronic medical record and relevant imaging...
November 15, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/29138707/jejunojejunal-intussusception-due-to-metastatic-melanoma-seven-years-after-the-primer
#20
Alexander Giakoustidis, Thomas Goulopoulos, Anastasios Boutis, George Kavvadias, Aristidis Kainantidis, Thomas Zaraboukas, Dimitrios Giakoustidis
Intestinal intussusception in adults is a rare medical condition accounting for less than 5% of all intussusceptions. Herein we present a 45-year-old patient with a history of abdominal pain and loss of weight. CT scan revealed jejunojejunal intussusceptions. The patient was subjected to exploratory operation and small intestine resection due to a mass causing intestinal intussusception. Pathology confirmed suspected diagnosis of metastatic melanoma to small intestine secondary to melanoma, 7 years after the initial manifestation...
2017: Case Reports in Surgery
keyword
keyword
1931
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"