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FDG PET and 99m Tc SPECT

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https://www.readbyqxmd.com/read/28623525/comparison-of-czt-spect-and-conventional-spect-for-assessment-of-contractile-function-mechanical-synchrony-and-myocardial-scar-in-patients-with-heart-failure
#1
Dayong Wu, Zongyao Zhang, Rongzheng Ma, Feng Guo, Lei Wang, Wei Fang
AIM: The aim of this study was to compare CZT-SPECT (CZT SPECT) to conventional SPECT (C-SPECT) in the assessment of left ventricular myocardial scar, contractile function, and mechanical synchrony in patients with heart failure (HF). METHODS: Fifty-nine patients with HF who were referred for myocardial perfusion/metabolism imaging were enrolled. All patients underwent resting (99m)Tc-MIBI gated myocardial perfusion imaging using a CZT SPECT camera and a C-SPECT camera, respectively, and (18)F-FDG PET myocardial metabolism imaging within three days...
June 16, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28536968/clinical-and-imaging-based-prognostic-factors-in-radioembolisation-of-liver-metastases-from-colorectal-cancer-a-retrospective-exploratory-analysis
#2
Kathy P Willowson, Aimee R Hayes, David L H Chan, Michael Tapner, Elizabeth J Bernard, Richard Maher, Nick Pavlakis, Stephen J Clarke, Dale L Bailey
BACKGROUND: The aim of this study was to investigate the relationship between absorbed dose and response of colorectal cancer liver metastases treated with [(90)Y]-resin microspheres and to explore possible clinical and imaging derived prognostic factors. METHODS: FDG PET/CT was used to measure response of individual lesions to a measured absorbed dose, derived from post-treatment (90)Y PET imaging. Predicted dose was also derived from planning [(99m)Tc]-MAA SPECT data...
December 2017: EJNMMI Research
https://www.readbyqxmd.com/read/28493201/nuclear-cardiology-practice-in-spain
#3
Amelia Jimenez-Heffernan, Santiago Aguade-Bruix, Irene Casans-Tormo
BACKGROUND: In Spain, nuclear cardiology (NC) procedures represent the second most frequently performed studies in nuclear medicine (NM) centers. METHODS: The NC Working Group of the Spanish Society of Nuclear Medicine and Molecular Imaging invited NM departments across the country to answer an online questionnaire regarding 2014 activity. RESULTS: Data on 40,161 patients from 42 centers were collected. The responding public centers served 39% of Spain´s population...
May 10, 2017: Journal of Nuclear Cardiology: Official Publication of the American Society of Nuclear Cardiology
https://www.readbyqxmd.com/read/28474165/evaluation-of-99m-tc-3prgd2-integrin-receptor-imaging-in-hepatocellular-carcinoma-tumour-bearing-mice-comparison-with-18-f-fdg-metabolic-imaging
#4
Jieling Zheng, Weibing Miao, Chao Huang, Haoxue Lin
OBJECTIVE: Our study was designed to explore the utility of (99m)Tc-HYNIC-PEG4-E[PEG4-c(RGDfK)]2 ((99m)Tc-3PRGD2) for the detection of hepatocellular carcinoma (HCC) and specifically to compare the diagnostic performance of (99m)Tc-3PRGD2 integrin receptor imaging and 2-18-fluoro-2-deoxy-D-glucose ((18)F-FDG) metabolic imaging in a nude mouse model. METHODS: (99m)Tc-3PRGD2 was synthesized using a HYNIC-3PRGD2 lyophilized kit with (99m)TcO4 labelling. The nude mouse animal model was established by subcutaneously injecting 5 × 10(7)/ml HepG2 cells into the shoulder flank of each mouse...
May 4, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28458734/designing-a-new-molecular-probe-the-potential-role-for-tilmanocept-lymphoseek-%C3%A2-in-the-assessment-of-patients-with-painful-hip-and-knee-joint-prostheses
#5
O O Adesanya, C E Hutchinson
BACKGROUND: There is a long history of nuclear medicine developments in orthopaedics beginning in the early 20(th) century. Technetium-99m ((99m)Tc) has a short half-life of six hours, emits 140 keV gamma rays and is the most widely used isotope, imaged with the Anger (gamma) camera. Gamma image quality and test sensitivity in painful prosthetic joints can be improved with single photon emission computed tomography (SPECT) and SPECT/CT. Positron Emission Tomography-Computed Tomography (PET-CT) with Sodium Fluoride ((18)F-NaF) and (18)Fluorine-fluorodeoxyglucose ((18)F-FDG) PET have promising and limited roles respectively in the investigation of painful prosthetic joints...
2017: Open Orthopaedics Journal
https://www.readbyqxmd.com/read/28453861/functional-lung-avoidance-and-response-adaptive-escalation-flare-rt-multimodality-plan-dosimetry-of-a-precision-radiation-oncology-strategy
#6
Eunsin Lee, Jing Zeng, Robert S Miyaoka, Jatinder Saini, Paul E Kinahan, George A Sandison, Tony Wong, Hubert J Vesselle, Ramesh Rengan, Stephen R Bowen
PURPOSE: Nonsmall cell lung cancer (NSCLC) patient radiation therapy (RT) is planned without consideration of spatial heterogeneity in lung function or tumor response. We assessed the dosimetric and clinical feasibility of functional lung avoidance and response-adaptive escalation (FLARE) RT to reduce dose to [(99m) Tc]MAA-SPECT/CT perfused lung while redistributing an escalated boost dose within [(18) F]FDG-PET/CT-defined biological target volumes (BTV). METHODS: Eight stage IIB-IIIB NSCLC patients underwent FDG-PET/CT and MAA-SPECT/CT treatment planning scans...
April 28, 2017: Medical Physics
https://www.readbyqxmd.com/read/28417852/nuclear-medicine-in-pediatric-nephro-urology-an-overview
#7
REVIEW
Iosif Mendichovszky, Bernardita Troncoso Solar, Naima Smeulders, Marina Easty, Lorenzo Biassoni
In the context of ante-natally diagnosed hydronephrosis, the vast majority of children with a dilated renal pelvis do not need any surgical treatment, as the dilatation resolves spontaneously with time. Slow drainage demonstrated at Tc-99m-mercaptoacetyltriglycine (MAG3) renography does not necessarily mean obstruction. Obstruction is defined as resistance to urinary outflow with urinary stasis at the level of the pelvic-ureteric junction (PUJ) which, if left untreated, will damage the kidney. Unfortunately this definition is retrospective and not clinically helpful...
May 2017: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/28050751/clinical-utility-of-18-f-fdg-positron-emission-tomography-computed-tomography-scan-vs-99m-tc-hmpao-white-blood-cell-single-photon-emission-computed-tomography-in-extra-cardiac-work-up-of-infective-endocarditis
#8
Trine K Lauridsen, Kasper K Iversen, Nikolaj Ihlemann, Philip Hasbak, Annika Loft, Anne K Berthelsen, Anders Dahl, Danijela Dejanovic, Elisabeth Albrecht-Beste, Jann Mortensen, Andreas Kjær, Henning Bundgaard, Niels Eske Bruun
The extra-cardiac work-up in infective endocarditis (IE) comprises a search for primary and secondary infective foci. Whether (18)FDG-PET/CT or WBC-SPECT/CT is superior in detection of clinically relevant extra-cardiac manifestations in IE is unexplored. The objectives of this study were to identify the numbers of positive findings detected by each imaging modality, to evaluate the clinical relevance of these findings and to define the reproducibility for extra-cardiac foci in patients with definite IE. Each modality was evaluated for numbers and location of positive extra-cardiac foci in patients with definite IE...
January 3, 2017: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28004791/free-triiodothyronine-level-correlates-with-myocardial-injury-and-prognosis-in-idiopathic-dilated-cardiomyopathy-evidence-from-cardiac-mri-and-spect-pet-imaging
#9
Wenyao Wang, Haixia Guan, Wei Fang, Kuo Zhang, A Martin Gerdes, Giorgio Iervasi, Yi-Da Tang
Thyroid dysfunction is associated with poor prognosis in heart failure, but theories of mechanisms are mainly based on animal experiments, not on human level. We aimed to explore the relation between thyroid function and myocardial injuries in idiopathic dilated cardiomyopathy (IDCM) using cardiac magnetic resonance imaging (MRI), single-photon emission computed tomography (SPECT) and positron emission tomography (PET). Myocardial fibrosis was detected by late gadolinium enhancement (LGE) MRI, and myocardial perfusion/metabolism was evaluated by (99m)Tc-MIBI SPECT /(18)F-FDG PET imaging...
December 22, 2016: Scientific Reports
https://www.readbyqxmd.com/read/27922334/ionizing-radiation-impairs-endogenous-regeneration-of-infarcted-heart-an-in-vivo-18-f-fdg-pet-ct-and-99m-tc-tetrofosmin-spect-ct-study-in-mice
#10
Lan Luo, Kodai Nishi, Yoshishige Urata, Chen Yan, Al Shaimaa Hasan, Shinji Goto, Takashi Kudo, Zhao-Lan Li, Tao-Sheng Li
Epidemiological studies have suggested that ionizing radiation increases cardiovascular disease risk, but the relevant mechanism is poorly understood. We recently demonstrated that adult mice exposed to whole-body irradiation with 3 Gy gamma rays significantly decreases the number and quality of cardiac stem cells. To further determine if radiation impairs myocardial regenerative potency, a myocardial infarction model was established in adult C57BL/6 mice by ligating the left anterior descending artery approximately 6 h after sham- or whole-body gamma irradiation (0 or 3 Gy)...
January 2017: Radiation Research
https://www.readbyqxmd.com/read/27879368/-99m-tc-duramycin-spect-imaging-of-early-tumor-response-to-targeted-therapy-a-comparison-with-18-f-fdg-pet
#11
COMPARATIVE STUDY
Filipe Elvas, Jan Boddaert, Christel Vangestel, Koon Pak, Brian Gray, Samir Kumar-Singh, Steven Staelens, Sigrid Stroobants, Leonie Wyffels
Molecular imaging of cell death may provide a detailed readout of the cellular response to novel therapies and prognostic information on tumor treatment efficacy, assisting in the design of individualized therapy. We compared the predictive power of cell death imaging using (99m)Tc-duramycin with the current gold standard (18)F-FDG for treatment response evaluation after targeted therapy. Methods: Early therapy response evaluation was assessed by (99m)Tc-duramycin SPECT and (18)F-FDG PET imaging in treatment-sensitive COLO205 and treatment-resistant HT29 human colorectal cancer xenografts 24 h after a single dose of conatumumab or IgG1 control...
April 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/27479638/integrin-imaging-with-99m-tc-3prgd2-spect-ct-shows-high-specificity-in-the-diagnosis-of-lymph-node-metastasis-from-non-small-cell-lung-cancer
#12
Xiaona Jin, Naixin Liang, Mengzhao Wang, Yunxiao Meng, Bing Jia, Ximin Shi, Shanqing Li, Jinmei Luo, Yaping Luo, Quancai Cui, Kun Zheng, Zhaofei Liu, Jiyun Shi, Fang Li, Fan Wang, Zhaohui Zhu
Purpose To evaluate an integrin imaging approach based on single photon emission computed tomography (SPECT)/computed tomography (CT) by using technetium 99m ((99m)Tc)-dimeric cyclic arginine-glycine-aspartic acid (RGD) peptides with three polyethylene glycol spacers (3PRGD2) as the tracer to target the integrin αvβ3 expression in lung cancer and lymph node metastasis. Materials and Methods With ethics committee approval and written informed consent, 65 patients (41 male, 24 female; mean age, 60 years ± 11 [standard deviation]) with suspicious lung lesions were recruited with informed consent...
December 2016: Radiology
https://www.readbyqxmd.com/read/27408894/evaluation-of-simultaneous-dual-radioisotope-spect-imaging-using-18-f-fluorodeoxyglucose-and-99m-tc-tetrofosmin
#13
Yasuyuki Takahashi, Mizuki Mochiki, Keiko Koyama, Toshihiko Ino, Hiroyuki Yamaji, Atsuko Kawakami
OBJECTIVES: Use of a positron emission tomography (PET)/single-photon emission computed tomography (SPECT) system facilitates the simultaneous acquisition of images with fluorine-18 fluorodeoxyglucose ((18)F-FDG) and technetium ((99m)Tc)-tetrofosmin. However, (18)F has a short half-life, and 511 keV Compton-scattered photons are detected in the (99m)Tc energy window. Therefore, in this study, we aimed to investigate the consequences of these facts. METHODS: The crosstalk correction for images in the (99m)Tc energy window involved the dual energy window (DEW) subtraction method...
2016: Asia Oceania Journal of Nuclear Medicine & Biology
https://www.readbyqxmd.com/read/27283041/identification-of-angiogenesis-rich-viable-myocardium-using-rgd-dimer-based-spect-after-myocardial-infarction
#14
Min Su Lee, Hyun Soo Park, Byung Chul Lee, Jae Ho Jung, Jung Sun Yoo, Sang Eun Kim
Cardiac healing after myocardial ischemia is a complex biological process. Advances in understanding of wound healing response have paved the way for clinical testing of novel molecular imaging to improve clinical outcomes. A key factor for assessing myocardial viability after ischemic injury is the evaluation of angiogenesis accompanying increased expression of integrin αvβ3. Here, we describe the capability of an αvβ3 integrin-targeting SPECT agent, (99m)Tc-IDA-D-[c(RGDfK)]2, for identification of ischemic but viable myocardium, i...
2016: Scientific Reports
https://www.readbyqxmd.com/read/27237443/production-and-clinical-applications-of-radiopharmaceuticals-and-medical-radioisotopes-in-iran
#15
REVIEW
Amir Reza Jalilian, Davood Beiki, Arman Hassanzadeh-Rad, Arash Eftekhari, Parham Geramifar, Mohammad Eftekhari
During past 3 decades, nuclear medicine has flourished as vibrant and independent medical specialty in Iran. Since that time, more than 200 nuclear physicians have been trained and now practicing in nearly 158 centers throughout the country. In the same period, Tc-99m generators and variety of cold kits for conventional nuclear medicine were locally produced for the first time. Local production has continued to mature in robust manner while fulfilling international standards. To meet the ever-growing demand at the national level and with international achievements in mind, work for production of other Tc-99m-based peptides such as ubiquicidin, bombesin, octreotide, and more recently a kit formulation for Tc-99m TRODAT-1 for clinical use was introduced...
July 2016: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/27237437/current-status-of-nuclear-medicine-practice-in-the-middle-east
#16
REVIEW
Diana Paez, Tarik Becic, Uday Bhonsle, Amir R Jalilian, Rodolfo Nuñez-Miller, Joao Alberto Osso
The practice of nuclear medicine (NM) in the Middle East region has experienced an important growth in the last 2 decades and has become crucial in providing healthcare to the region's population of about 395 million people. Even though there are some countries in which the services provided are limited to basic coverage of studies with (99m)Tc and (131)I, most have well-established practices covering most of the available studies in this medical specialty; this is the case in for example, Iran, Israel, Kuwait, Saudi Arabia, and Turkey...
July 2016: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/27174865/hybrid-radioguided-occult-lesion-localization-hybrid-roll-of-18-f-fdg-avid-lesions-using-the-hybrid-tracer-indocyanine-green-99m-tc-nanocolloid
#17
G H KleinJan, O R Brouwer, H M Mathéron, D D D Rietbergen, R A Valdés Olmos, M W Wouters, N S van den Berg, F W B van Leeuwen
PURPOSE: To assess if combined fluorescence- and radio-guided occult lesion localization (hybrid ROLL) is feasible in patients scheduled for surgical resection of non-palpable (18)F-FDG-avid lesions on PET/CT. METHODS: Four patients with (18)F-FDG-avid lesions on follow-up PET/CT that were not palpable during physical examination but were suspected to harbor metastasis were enrolled. Guided by ultrasound, the hybrid tracer indocyanine green (ICG)-(99m)Tc-nanocolloid was injected centrally in the target lesion...
September 2016: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/27044712/development-of-radiodetection-systems-towards-miniaturised-quality-control-of-pet-and-spect-radiopharmaceuticals
#18
Matthew P Taggart, Mark D Tarn, Mohammad M N Esfahani, Daniel M Schofield, Nathaniel J Brown, Stephen J Archibald, Tom Deakin, Nicole Pamme, Lee F Thompson
The ability to detect radiation in microfluidic devices is important for the on-chip analysis of radiopharmaceuticals, but previously reported systems have largely suffered from various limitations including cost, complexity of fabrication, and insufficient sensitivity and/or speed. Here, we present the use of sensitive, low cost, small-sized, commercially available silicon photomultipliers (SiPMs) for the detection of radioactivity inside microfluidic channels fabricated from a range of conventional microfluidic chip substrates...
April 26, 2016: Lab on a Chip
https://www.readbyqxmd.com/read/26630973/multimodal-in-vivo-imaging-of-tumorigenesis-and-response-to-chemotherapy-in-a-transgenic-mouse-model-of-mammary-cancer
#19
Jean-Louis Alberini, Raphaël Boisgard, Stéphanie Guillermet, Karine Siquier, Benoît Jego, Benoît Thézé, Saik Urien, Keyvan Rezaï, Emmanuelle Menet, Renaud Maroy, Frédéric Dollé, Bertrand Kühnast, Bertrand Tavitian
PURPOSE: Transgenic mice expressing the polyoma middle T oncoprotein (PyMT) in the mammary epithelium were explored by multimodal imaging to monitor longitudinally spontaneous tumor growth and response to chemotherapy. PROCEDURES: Positron emission tomography (PET) with 2-deoxy-2-[(18)F]fluoro-D-glucose ([(18)F]FDG) and 3'-deoxy-3'-[(18)F]fluorothymidine ([(18)F]FLT), single photon emission tomography (SPECT) with [(99m)Tc]TcO4 ([(99m)Tc]TEC), X-ray computed tomography, and fluorescent confocal endomicroscopy (FCE) images were acquired during tumor progression in female PyMT mice...
August 2016: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/26514321/detection-of-bone-metastases-in-breast-cancer-patients-in-the-pet-ct-era-do-we-still-need-the-bone-scan
#20
M Caglar, O Kupik, E Karabulut, P F Høilund-Carlsen
AIM: To examine the value of 18F-fluorodeoxyglucose positron emission tomography/computed tomography (FDG-PET/CT) for the detection of bone metastasis in breast cancer patients and assess whether whole body bone scan (BS) with (99m)Tc-methylene diphosphonate provides any additional information. MATERIAL AND METHODS: Study group comprised 150 patients, mean age 52 years (range 27-85) with breast cancer, suspected of having bone metastases. All patients had undergone both FDG-PET/CT and BS with or without single photon emission tomography/computed tomography (SPECT/CT) within a period of 6 weeks...
January 2016: Revista Española de Medicina Nuclear e Imagen Molecular
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