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Nuclear Medicine Communications

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https://www.readbyqxmd.com/read/28430742/utility-of-single-photon-emission-tomography-computed-tomography-for-sentinel-lymph-node-localization-in-breast-cancer-patients
#1
Agnieszka Giżewska, Ewa Witkowska-Patena, Sebastian Osiecki, Andrzej Mazurek, Zofia Stembrowicz-Nowakowska, Mirosław Dziuk
OBJECTIVES: Sentinel lymph node (SLN) mapping is currently a routine technique in breast cancer management and preoperative scintigraphic imaging plays a crucial role in the process of SLN detection. The guidelines recommend performing planar acquisition and optional single-photon emission tomography/computed tomography (SPECT/CT) imaging. The aim of this study was to verify whether routine performing of SPECT/CT in addition to planar imaging increases the sensitivity of SLN detection in patients with early-stage breast cancer...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28430741/utility-of-8%C3%A2-h-and-time-decay-corrected-acquisition-scintigraphy-with-in-vitro-labeled-white-blood-cells-for-the-diagnosis-of-osteoarticular-infection
#2
Edel Noriega Álvarez, Guillermo A Martínez Pimienta, Ana M Benítez Segura, María T Bajén Lázaro, Alba Rodrígez-Gasén, Julio Rodríguez-Rubio Corona, Jaime Mora Salvadó
INTRODUCTION: Except in the spine, labeled white-blood cell scintigraphy (WBCS) with image acquisition up to 24 h is the nuclear medicine test of choice for diagnosing osteoarticular infection. However, distinguishing between inflammation and infection is a challenge. OBJECTIVES: The first aim of this study was to verify earlier research studies that used 4 and 24 h time decay-corrected acquisition (TDCA) to differentiate infection from inflammation. The second aim was to analyze whether 8 h acquisition (1-day protocol) yielded similar results as 20-24 h acquisition...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28430740/low-dose-computed-tomography-scans-with-automatic-exposure-control-for-patients-of-different-ages-undergoing-cardiac-pet-ct-and-spect-ct
#3
Ching-Ching Yang, Bang-Hung Yang, Chun-Yuan Tu, Tung-Hsin Wu, Shu-Hsin Liu
PURPOSE: This study aimed to evaluate the efficacy of automatic exposure control (AEC) in order to optimize low-dose computed tomography (CT) protocols for patients of different ages undergoing cardiac PET/CT and single-photon emission computed tomography/computed tomography (SPECT/CT). METHODS: One PET/CT and one SPECT/CT were used to acquire CT images for four anthropomorphic phantoms representative of 1-year-old, 5-year-old and 10-year-old children and an adult...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28430739/downstream-indication-to-revascularization-following-hybrid-cardiac-pet-mri-preliminary-results
#4
Julien Priamo, Dionysos Adamopoulos, Oliver Rager, Angela Frei, Stephane Noble, David Carballo, Osman Ratib, René Nkoulou
BACKGROUND: Hybrid PET/MRI allows the acquisition of both fluorine-18-fluorodeoxyglucose (F-FDG) PET and cardiac magnetic resonance (CMR) during one session. Whether this will result in different referral to coronary revascularization (CR) is unknown. We compared this new hybrid method with all-nuclear/all-CMR methods in the assessment of viable myocardium and in downstream referral to CR. PATIENTS AND METHODS: Overall, 12 patients with rest perfusion defects on a single photon emission computed tomography (SPECT) were recruited for cardiac viability assessment using a PET/MRI device...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28430738/three-dimensional-fractal-analysis-of-99mtc-maa-spect-images-in-chronic-thromboembolic-pulmonary-hypertension-for-evaluation-of-response-to-balloon-pulmonary-angioplasty-association-with-pulmonary-arterial-pressure
#5
Yasuhiro Maruoka, Michinobu Nagao, Shingo Baba, Takuro Isoda, Yoshiyuki Kitamura, Yuzo Yamazaki, Koichiro Abe, Masayuki Sasaki, Kohtaro Abe, Hiroshi Honda
OBJECTIVE: Balloon pulmonary angioplasty (BPA) is used for inoperable chronic thromboembolic pulmonary hypertension (CTEPH), but its effect cannot be evaluated noninvasively. We devised a noninvasive quantitative index of response to BPA using three-dimensional fractal analysis (3D-FA) of technetium-99m-macroaggregated albumin (Tc-MAA) single-photon emission computed tomography (SPECT). PATIENTS AND METHODS: Forty CTEPH patients who underwent pulmonary perfusion scintigraphy and mean pulmonary arterial pressure (mPAP) measurement by right heart catheterization before and after BPA were studied...
April 20, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28410290/diagnostic-and-prognostic-impact-of-fluorine-18-fluorodeoxyglucose-pet-ct-in-preoperative-and-postoperative-setting-of-breast-cancer-patients
#6
Laura Evangelista, Anna R Cervino, Silvia Michieletto, Tania Saibene, Cristina Ghiotto, Valentina Guarneri, Pierfranco Conte, Pasquale Reccia, Giorgio Saladini
PURPOSE: The aim of this study was to assess the diagnostic and prognostic value of fluorine-18-fluorodeoxyglucose (F-FDG) PET/CT in patients with breast cancer (BC) in the preoperative and the postoperative setting. PATIENTS AND METHODS: Between 2011 and 2015, we prospectively enrolled 275 patients (mean age: 53 years) with BC (stage I-III; triple-negative or HER2-positive cancer). One-hundred and forty-nine (54.2%) patients underwent F-FDG PET/CT before neoadjuvant therapy and 126 (45...
April 13, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28410289/initial-experience-with-real-time-hybrid-single-photon-emission-computed-tomography-computed-tomography-guided-percutaneous-transthoracic-needle-biopsy
#7
Qian Hua, Xiangyun Zhu, Lei Zhang, Yanjun Zhao, Ping Tang, Jianming Ni
The aim of this study was to explore a technique that uses real-time fusion image of single-photon emission computed tomography/computed tomography (SPECT/CT) to guide percutaneous transthoracic needle biopsy (PTNB) and test its feasibility and safety in patients. Twelve patients with intrathoracic lesions suspicious for malignancy underwent real-time 99m-technetium sestamibi SPECT/CT-guided PTNB. Chest SPECT/CT fusion images were used for biopsy planning and intraprocedure fusion of SPECT with guiding CT was used to adjust the puncture angle and direction...
April 13, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28410288/the-utility-of-the-combination-of-a-spect-study-with-123i-fp-cit-of-dopamine-transporters-and-123i-mibg-myocardial-scintigraphy-in-differentiating-parkinson-disease-from-other-degenerative-parkinsonian-syndromes
#8
Naoto Uyama, Hideki Otsuka, Takayoshi Shinya, Yoichi Otomi, Masafumi Harada, Wataru Sako, Yuishin Izumi, Ryuji Kaji, Yuya Watanabe, Satoru Takashi, Yamato Kunikane
OBJECTIVE: Molecular imaging of nigrostriatal dopamine transporters (DAT) and sympathetic cardiac innervation with single-photon emission computed tomography (SPECT) are useful tools for differentiating idiopathic Parkinson disease (PD) from other degenerative parkinsonian syndromes (non-PD). Nevertheless, these modalities are often insufficient for achieving a definite diagnosis. The aims of this study were to evaluate the diagnostic accuracy of the combination of these tools. MATERIALS AND METHODS: The SPECT radiotracers [I]-N-ω-fluoropropyl-2β-carbomethoxy-3β-(4-iodophenyl)-nortropane (FP-CIT) and meta-[I]-iodobenzylguanidine (MIBG) were used to research presynaptic dopaminergic projections (DAT SPECT) and myocardial adrenergic innervation (MIBG scintigraphy), respectively...
April 13, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28394818/optimization-of-pet-ct-image-quality-using-the-ge-sharp-ir-point-spread-function-reconstruction-algorithm
#9
Nicholas J Vennart, Nicholas Bird, John Buscombe, Heok K Cheow, Ewa Nowosinska, Sarah Heard
OBJECTIVE: The objective of this study was to quantify any improvement with the GE 'Sharp IR' point-spread function (PSF) reconstruction algorithm in addition to ordered subsets expectation maximum (OSEM) and time-of-flight (TOF) reconstruction algorithms and establish the optimum parameters to be used in clinical studies. MATERIALS AND METHODS: We conducted a range of experiments using the National Electrical Manufacturers Association image quality phantom filled with a 4 : 1 signal-to-background ratio...
April 7, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28383319/clinical-significance-of-incidental-prostatic-fluorine-18-fluorodeoxyglucose-uptake-in-the-diagnosis-of-infectious-prostatitis-in-adult-males
#10
Gil Ho Lee, Jai Hyuen Lee
BACKGROUND: We performed a work-up study of cancer patients with incidentally found uncharacterized prostatic fluorine-18-fluorodeoxyglucose (F-FDG) uptake in F-FDG PET/CT results. Then, we evaluated the clinical significance of the incidental prostate F-FDG uptake (IPU) in nonmalignant prostate tissues. PATIENTS AND METHODS: Overall, 51 men agreed to a physical prostate examination and an expressed prostatic secretion (EPS) test within 2 weeks after torso F-FDG PET/CT scans...
April 5, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28383318/quantitative-comparison-between-regularized-time-of-flight-and-osem-pet-reconstructions-for-small-18f-fdg-avid-lesions
#11
Charles B Chism, Gregory C Ravizzini, Homer A Macapinlac, Tinsu Pan
OBJECTIVE: We seek to quantitatively assess the relationship between lesion size and maximum standard uptake value (SUVmax) differences for small fluorine-18-fluorodeoxyglucose-avid lesions through the comparison of regularized time-of-flight (R-ToF) PET and standard ordered subset expectation maximization (OSEM) PET reconstructions. PATIENTS AND METHODS: Data from 30 patients (male to female ratio 8 : 7, 15 different primary malignancies) who underwent noncontrast PET-CT in October 2015 through February 2016 were evaluated...
April 5, 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28379896/spectrum-of-metastatic-and-nonmetastatic-skeletal-findings-with-dual-phase-18f-fech-pet-ct-in-patients-with-biochemical-relapse-of-prostate-cancer
#12
Athar Haroon, Rizwan Syed, Raymond Endozo, Rayjanah Allie, Alex Freeman, Mark Emberton, Jamshed Bomanji
INTRODUCTION: The aim of this study was to evaluate the spectrum of skeletal findings on dual-phase fluorine-18-fluoroethylcholine (F-FECH) PET/CT performed during the work-up of patients referred for suspected prostate cancer relapse. MATERIALS AND METHODS: Three hundred F-FECH PET/CT scans were evaluated prospectively. The low-dose CT features of all cases were categorized as isodense, sclerotic, lytic or mixed lytic/sclerotic and maximum standardized uptake value (SUVmax) values were calculated...
May 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28362718/radioactive-seed-localization-is-the-preferred-technique-in-nonpalpable-breast-cancer-compared-with-wire-guided-localization-and-radioguided-occult-lesion-localization
#13
Carla I J M Theunissen, Esther A Z Rust, Mireille A Edens, Caroline Bandel, Janneke G Van't Ooster-van den Berg, Piet L Jager, Eva M Noorda, Anne Brecht Francken
OBJECTIVES: Three commonly used techniques for localization of nonpalpable breast cancer are radioactive seed localization (RSL), wire-guided localization (WGL) and radioguided occult lesion localization (ROLL). In this study, we analysed the surgical margins of these three techniques. METHODS: Women diagnosed with nonpalpable breast cancer undergoing breast-conserving surgery with one of the above-mentioned techniques were retrospectively included. The primary outcome parameter was tumour-free margin rate...
May 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28362717/low-activity-versus-high-activity-noninferior-response-to-radioiodine-therapy-in-differentiated-patients-with-extrathyroid-extension
#14
Chen Wang, Teng Zhao, Hui Li, Wen Gao, Yansong Lin
OBJECTIVES: Radioactive iodine (RAI) therapy is recommended for differentiated thyroid cancer (DTC) patients with microscopic extrathyroid extension (ETE). Patients with a low preablative stimulated thyroglobulin (ps-Tg) level have a more favorable prognosis. It remains uncertain whether low-activity RAI could have the same efficacy in patients with low ps-Tg. This study aimed to evaluate the effectiveness of low-activity RAI therapy in low-level ps-Tg DTC with ETE. PATIENTS AND METHODS: The inclusion criteria for this retrospective study were as follows: (a) age 18 years or older, (b) DTC after total or near-total thyroidectomy of DTC, (c) no distant metastasis after thyroidectomy and before RAI therapy, (d) American Joint Committee on Cancer pT3 stage (with microscopic ETE) with any American Joint Committee on Cancer N stage, (e) ps-Tg level of 5 ng/ml or less, and (f) after the first time of RAI therapy...
May 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28346283/nonvisualized-sentinel-lymph-nodes-on-lymphoscintigraphy-in-melanoma-predictive-factors-and-surgical-outcomes
#15
Darryl Schuitevoerder, Lisa Grinlington, Jeffrey Stevens, Robert Nance, Jeanine Fortino, John T Vetto
PURPOSE: Preoperative lymphoscintigraphy is the standard for the identification of sentinel lymph nodes (SLNs) in melanoma. The impact of negative scintigraphy [nonvisualization (NV) of the SLN] on surgical outcomes is inadequately reported in the literature. The objectives of this study were to determine the incidence, predictive factors, and surgical outcomes of NV in clinically node-negative melanoma patients. PATIENTS AND METHODS: A retrospective review of a prospective, Institutional Review Board approved, melanoma sentinel node database from January 2005 to August 2015 was performed...
May 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28338530/pharmacologic-characterizations-of-a-p2x7-receptor-specific-radioligand-11c-gsk1482160-for-neuroinflammatory-response
#16
Junbin Han, Hui Liu, Chunling Liu, Hongjun Jin, Joel S Perlmutter, Terrance M Egan, Zhude Tu
OBJECTIVE: The P2X7 receptor (P2X7R) is a key regulatory element in the neuroinflammatory cascade that provides a promising target for imaging neuroinflammation. GSK1482160, a P2X7R modulator with nanomolar binding affinity and high selectivity, has been successfully radiolabeled and utilized for imaging P2X7 levels in a mouse model of lipopolysaccharide-induced systemic inflammation. In the current study, we further characterized its binding profile and determined whether [C]GSK1482160 can detect changes in P2X7R expression in a rodent model of multiple sclerosis...
May 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28338529/dosimetry-software-hermes-internal-radiation-dosimetry-from-quantitative-image-reconstruction-to-voxel-level-absorbed-dose-distribution
#17
Eero T Hippeläinen, Mikko J Tenhunen, Hanna O Mäenpää, Jorma J Heikkonen, Antti O Sohlberg
OBJECTIVE: The aim of this work is to validate a software package called Hermes Internal Radiation Dosimetry (HIRD) for internal dose assessment tailored for clinical practice. The software includes all the necessary steps to perform voxel-level absorbed dose calculations including quantitative reconstruction, image coregistration and volume of interest tools. METHODS: The basics of voxel-level dosimetry methods and implementations to HIRD software are reviewed...
May 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28306621/prognostic-value-of-preoperative-18f-fdg-pet-ct-in-papillary-thyroid-cancer-patients-with-a-high-metastatic-lymph-node-ratio-a-multicenter-retrospective-cohort-study
#18
Seong Young Kwon, Eun Kyoung Choi, Eun Jung Kong, Ari Chong, Jung-Min Ha, Kyung Ah Chun, Ihn Ho Cho, Hee-Seung Bom, Jung-Joon Min, Jahae Kim, Ho-Chun Song, Joo Hyun O, Sung Hoon Kim
OBJECTIVE: Metastatic lymph node ratio (MLNR) is a known significant predictor of disease-free survival in differentiated thyroid cancer. The authors investigated the ability of preoperative fluorine-18 fluorodeoxyglucose (F-FDG) PET/CT to predict recurrence after surgery with radioactive iodine therapy considering MLNR. PATIENTS AND METHODS: A total of 274 patients who underwent preoperative PET/CT and surgery with radioactive iodine therapy were enrolled. The tumor-to-liver uptake ratio on PET/CT was calculated by dividing the maximum standardized uptake value of a primary lesion by the mean standardized uptake value of the normal liver...
May 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28306620/diagnostic-performance-of-a-novel-dedicated-breast-pet-scanner-with-c-shaped-ring-detectors
#19
Ryusuke Nakamoto, Yuji Nakamoto, Takayoshi Ishimori, Kayo Nishimatsu, Kanae K Miyake, Shotaro Kanao, Mami Iima, Masakazu Toi, Kaori Togashi
BACKGROUND: A dedicated breast PET scanner with C-shaped detectors (C scanner) has been newly developed. The purpose of this study was to re-evaluate the diagnostic performance of high-resolution PET images with the new reconstruction conditions, obtained using this C scanner in breast cancer patients, and to compare the standardized uptake values (SUVs) of lesions obtained from the C scanner with those from whole-body PET/computed tomography (CT) (WB PET/CT). PATIENTS AND METHODS: A total of 159 female patients with known or suspected breast carcinomas (total 188 lesions: 172 invasive carcinomas; eight noninvasive ductal carcinomas in situ; eight benign lesions) were analysed...
May 2017: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/28291159/67cu-radiolabeling-of-a-multimeric-rgd-peptide-for-%C3%AE-v%C3%AE-3-integrin-targeted-radionuclide-therapy-stability-therapeutic-efficacy-and-safety-studies-in-mice
#20
Zhao-Hui Jin, Takako Furukawa, Tomoyuki Ohya, Mélissa Degardin, Aya Sugyo, Atsushi B Tsuji, Yasuhisa Fujibayashi, Ming-Rong Zhang, Tatsuya Higashi, Didier Boturyn, Pascal Dumy, Tsuneo Saga
OBJECTIVE: Copper-67 (Cu) is one of the most promising radionuclides for internal radiation therapy. Globally, several projects have recently been initiated for developing innovative approaches for the large-scale production of Cu. Encouraged by these, we performed Cu-radiolabeling of a tetrameric cyclic Arg-Gly-Asp (cRGD) peptide conjugate, cyclam-RAFT-c(-RGDfK-)4, which selectively targets αVβ3 integrin (αVβ3), the transmembrane receptor involved in tumor invasion, angiogenesis, and metastasis...
April 2017: Nuclear Medicine Communications
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