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FDG PET and 99m Tc SPECT

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https://www.readbyqxmd.com/read/29764036/-comparison-of-prognostic-value-of-18-f-fdg-pet-ct-myocardial-metabolism-imaging-and-coronary-collateral-circulation-in-patients-with-cto-lesions
#1
G Y Zhai, J L Wang, Y Y Liu, Y J Zhou
Objective: To evaluate the location, extent of viable myocardial of chronic total coronary occlusions(CTO)lesions by (18)F-FDG PET myocardial metabolism imaging and then compare with coronary collateral circulation(CCC) to evaluate the prognostic evaluation in patients with CTO lesions. Methods: A total of Sixty consecutive patients with CTO lesions referred for viability assessment from April 2016 to April 2017 in Department of Cardiology, Beijing Anzhen Hospital were included in the study. These patients underwent (99m)Tc-sestamibi ECG-gated SPECT rest myocardial perfusion imaging and ECG-gated (18)F-FDG PET/CT myocardial metabolic imaging, as well as coronary arteriography were recruited in this study...
May 8, 2018: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/29736155/noninferiority-of-99m-tc-ethylenedicysteine-glucosamine-as-an-alternative-analogue-to-18-f-fluorodeoxyglucose-in-the-detection-and-staging-of-non-small-cell-lung-cancer
#2
Dong Dai, F David Rollo, Jerry Bryant, E Edmund Kim
Objective. 99m Tc-ethylenedicysteine-glucosamine (99m Tc-EC-G) was developed as a potential alternative to 18 F-FDG for cancer imaging. A Phase 2 study was conducted to compare 18 F-FDG PET/CT and 99m Tc-EC-G SPECT/CT in the detection and staging of patients with non-small cell lung cancer (NSCLC). This study was aimed to demonstrate that 99m Tc-EC-G SPECT/CT was not inferior to 18 F-FDG PET/CT in patients with confirmed NSCLC. Methods. Seventeen patients with biopsy proven NSCLC were imaged with 99m Tc-EC-G and 18 F-FDG to detect and stage their cancers...
2018: Contrast Media & Molecular Imaging
https://www.readbyqxmd.com/read/29700129/regional-myocardial-perfusion-disturbance-in-experimental-chronic-chagas-cardiomyopathy
#3
Luciano F L Oliveira, James T Thackeray, José A Marin Neto, Minna M D Romano, Eduardo E V Carvalho, Jorge Mejia, Denise M Tanaka, Grace K Silva, Douglas R Abdalla, Carlos Malamut, Frank M Bengel, Maria L Higuchi, André Schmidt, Edécio Cunha-Neto, Marcus V Simões
Background: Altered myocardial perfusion is a common finding in chronic Chagas cardiomyopathy (CCC), but its underlying histologic changes have not been elucidated. We investigated the occurrence of myocardial perfusion defects (MPD) and the correlated regional changes to histology in an experimental model of CCC in hamsters. Methods: Female Syrian hamsters ( n = 34) were infected with 3.5x104 to 105 trypomastigote forms of T. cruzi Y-strain and 6 to 10 months afterwards were submitted to in vivo imaging including: rest 99m Tc-sestamibi SPECT imaging, segmental and global left ventricular (LV) function assessment by using 2D-echocardiogram, and 18 F-FDG PET for evaluation of myocardial viability...
April 26, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29340158/follicular-thyroid-cancer-avid-on-c-11-methionine-pet-ct
#4
Mads Ryø Jochumsen, Peter Iversen, Anne Kirstine Arveschoug
A case of follicular thyroid cancer with intense focal Methionine uptake on 11C-Methionine PET/CT is reported here. The use of 11C-Methionine PET in differentiated thyroid cancer is currently being investigated as a surrogate tracer compared to the more widely used 18F-FDG PET. This case illustrates the potential incremental value of this modality, not only in the localizing of parathyroid adenoma, but also indicating that 11C-Methionine PET might have a potential of increasing the pretest likelihood of thyroid malignancy in a cold nodule with highly increased Sestamibi uptake...
2018: Endocrinology, Diabetes & Metabolism Case Reports
https://www.readbyqxmd.com/read/28823060/cardiac-death-in-patients-with-left-ventricular-aneurysm-remodeling-and-myocardial-viability-by-gated-99m-tc-mibi-spect-and-gated-18-f-fdg-pet
#5
Weixue Wang, Xiang Li, Congna Tian, Shihua Zhao, Marcus Hacker, Xiaoli Zhang
(1) To evaluate the prognostic value of LV remodeling parameters in patients with LV aneurysm by gated SPECT (GSPECT), gated PET (GPET) and CMR; (2) to evaluate the impact of myocardial viability and LV remodeling on the long-term cardiac survival in patients with LV aneurysm. One hundred and twenty-six consecutive patients underwent GPET, GSPECT and CMR within two weeks, with a mean follow-up of 3.9 ± 1.5 years. End-diastolic volume (EDV, mL) and end-systolic volume (ESV, mL) measured by GPET, GSPECT and CMR and corrected for BSA; EDVI and ESVI were calculated...
March 2018: International Journal of Cardiovascular Imaging
https://www.readbyqxmd.com/read/28721303/value-of-99m-tc-mdp-spect-ct-and-18-f-fdg-pet-ct-scanning-in-the-evaluation-of-malignantly-transformed-fibrous-dysplasia
#6
Wei-Jun Wei, Zhen-Kui Sun, Chen-Tian Shen, Xin-Yun Zhang, Juan Tang, Hong-Jun Song, Zhong-Ling Qiu, Quan-Yong Luo
Although fibrous dysplasia is not considered a potentially premalignant disorder, malignant transformation occurs. Because of its rarity, radiographic features of malignantly transformed fibrous dysplasia on cross-sectional imaging modalities are less recognized, making diagnosis and differential diagnosis of the disease quite difficult in clinical practice. In this study, we analyzed the clinical characteristics, imaging features, pathology findings and surgery strategies of 19 malignantly transformed fibrous dysplasia...
2017: American Journal of Nuclear Medicine and Molecular Imaging
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
#7
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
#8
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
#9
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...
December 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
#10
COMPARATIVE STUDY
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...
July 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
#11
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
#12
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...
July 2017: Medical Physics
https://www.readbyqxmd.com/read/28417852/nuclear-medicine-in-pediatric-nephro-urology-an-overview
#13
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
#14
COMPARATIVE STUDY
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...
May 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
#15
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
#16
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
#17
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
#18
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
#19
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
#20
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
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