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single photon emission computed tomography

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https://www.readbyqxmd.com/read/28431062/impact-of-basal-inferolateral-scar-burden-determined-by-automatic-analysis-of-99mtc-mibi-myocardial-perfusion-spect-on-the-long-term-prognosis-of-cardiac-resynchronization-therapy
#1
Itsuro Morishima, Kenji Okumura, Hideyuki Tsuboi, Yasuhiro Morita, Kensuke Takagi, Ruka Yoshida, Hiroaki Nagai, Toshiro Tomomatsu, Yoshihiro Ikai, Kazushi Terada, Takahito Sone, Toyoaki Murohara
Aims: Left-ventricular (LV) scarring may be associated with a poor response to cardiac resynchronization therapy (CRT). The automatic analysis of myocardial perfusion single-photon emission computed tomography (MP-SPECT) may provide objective quantification of LV scarring. We investigated the impact of LV scarring determined by an automatic analysis of MP-SPECT on short-term LV volume response as well as long-term outcome. Methods and Results: We studied consecutive 51 patients who were eligible to undergo 99mTc-MIBI MP-SPECT both at baseline and 6 months after CRT (ischaemic cardiomyopathies 31%)...
April 1, 2017: Europace: European Pacing, Arrhythmias, and Cardiac Electrophysiology
https://www.readbyqxmd.com/read/28430742/utility-of-single-photon-emission-tomography-computed-tomography-for-sentinel-lymph-node-localization-in-breast-cancer-patients
#2
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/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/28429371/design-of-a-short-non-uniform-acquisition-protocol-for-quantitative-analysis-in-dynamic-cardiac-spect-imaging-a-retrospective-123-i-mibg-animal-study
#6
Yunlong Zan, Yong Long, Kewei Chen, Biao Li, Qiu Huang, Grant T Gullberg
PURPOSE: Our previous works have found that quantitative analysis of (123) I-MIBG kinetics in the heart with dynamic single-photon emission computed tomography (SPECT) offers the potential to quantify the innervation integrity at an early stage of left ventricular hypertrophy. However, conventional protocols involving a long acquisition time for dynamic imaging reduce the animal survival rate and thus make longitudinal analysis difficult. The goal of this work was to develop a procedure to reduce the total acquisition time by selecting non-uniform acquisition times for projection views while maintaining the accuracy and precision of estimated physiologic parameters...
April 21, 2017: Medical Physics
https://www.readbyqxmd.com/read/28428473/technical-considerations-on-scanning-and-image-analysis-for-amyloid-pet-in-dementia
#7
Go Akamatsu, Akihito Ohnishi, Kazuki Aita, Yasuhiko Ikari, Yasuji Yamamoto, Michio Senda
Brain imaging techniques, such as computed tomography (CT), magnetic resonance imaging (MRI), single photon emission computed tomography (SPECT), and positron emission tomography (PET), can provide essential and objective information for the early and differential diagnosis of dementia. Amyloid PET is especially useful to evaluate the amyloid-β pathological process as a biomarker of Alzheimer's disease. This article reviews critical points about technical considerations on the scanning and image analysis methods for amyloid PET...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28428471/motion-frozen-imaging-by-gated-myocardial-perfusion-single-photon-emission-computed-tomography-using-multi-focus-fan-beam-collimator-in-thallium-201-study
#8
Kaito Takahashi, Takashi Takeuchi, Yoshiyuki Hosokai, Hayato Odagiri, Haruo Saito
PURPOSE: This study aimed to evaluate the statistical noise of motion-frozen (MF) image generated by gated myocardial perfusion single photon emission computed tomography (SPECT) imaging using IQ · SPECT and to determine the optimal acquisition and reconstruction parameters for MF image using IQ · SPECT. METHODS: A movement cardiac phantom and static cardiac phantom were used to acquire the MF images. The acquisition times used were different in 8 and 16 frames per R-R interval, and varying reconstruction parameters (subset and iteration) were used...
2017: Nihon Hoshasen Gijutsu Gakkai Zasshi
https://www.readbyqxmd.com/read/28427768/syndrome-of-transient-headache-and-neurological-deficits-with-cerebrospinal-fluid-lymphocytosis-handl-in-a-patient-with-confusional-symptoms-diffuse-eeg-abnormalities-and-bilateral-vasospasm-in-transcranial-doppler-ultrasound-a-case-report-and-literature-review
#9
M Hidalgo de la Cruz, R Domínguez Rubio, E Luque Buzo, F Díaz Otero, P Vázquez Alén, J Orcajo Rincón, J Prieto Montalvo, A Contreras Chicote, F Grandas Pérez
INTRODUCTION: HaNDL syndrome (transient headache and neurological deficits with cerebrospinal fluid lymphocytosis) is characterised by one or more episodes of headache and transient neurological deficits associated with cerebrospinal fluid lymphocytosis. To date, few cases of HaNDL manifesting with confusional symptoms have been described. Likewise, very few patients with HaNDL and confusional symptoms have been evaluated with transcranial Doppler ultrasound (TCD). TCD data from patients with focal involvement reveal changes consistent with vasomotor alterations...
April 17, 2017: Neurología: Publicación Oficial de la Sociedad Española de Neurología
https://www.readbyqxmd.com/read/28421362/selective-imaging-of-vascular-endothelial-growth-factor-receptor-1-and-receptor-2-in-atherosclerotic-lesions-in-diabetic-and-non-diabetic-apoe-mice
#10
Yared Tekabe, Lynne L Johnson, Krissy Rodriquez, Qing Li, Marina Backer, Joseph M Backer
PURPOSE: Plaque vulnerability is associated with inflammation and angiogenesis, processes that rely on vascular endothelial growth factor (VEGF) signaling via two receptors, VEGFR-1 and VEGFR-2. We have recently reported that enhanced uptake of scVEGF-PEG-DOTA/Tc-99m (scV/Tc) single photon emission computed tomography (SPECT) tracer that targets both VEGFR-1 and VEGFR-2, identifies accelerated atherosclerosis in diabetic relative to non-diabetic ApoE(-/-) mice. Since VEGFR-1 and VEGFR-2 may play different roles in atherosclerotic plaques, we reasoned that selective imaging of each receptor can provide more detailed information on plaque biology...
April 18, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28418820/case-241-hemiparkinsonism-hemiatrophy-spect-with-99m-tc-trodat-1-and-muscle-mr-imaging-abnormalities
#11
Thiago Cardoso Vale, Flávia Cristina de Lima Pinto, José Luiz Pedroso, Marília Alves Dos Reis, Ilza Rosa Batista, Rodrigo Affonseca Bressan, René Leandro Magalhães Rivero, Renato Adam Mendonça, Orlando G Barsottini
History A 43-year-old right-handed man presented with a history of progressive mild left-sided weakness and slowness of movements. Symptoms began 4 years earlier, and the patient noticed a progressive decline in his daily routine due to gait difficulties in the past year. There was no history of head trauma, surgery, drug therapy, smoking, or alcohol abuse, nor was there any relevant family history. Examination revealed normal cognition (29 of 30 points on the Mini-Mental State Examination and 27 of 30 points on the Montreal Cognitive Assessment) and normal cerebellar, sensory, cranial nerve, and autonomic function...
May 2017: Radiology
https://www.readbyqxmd.com/read/28418733/feasibility-of-spect-ct-imaging-to-study-the-pharmacokinetics-of-antisense-oligonucleotides-in-a-mouse-model-of-duchenne-muscular-dystrophy
#12
Evita van de Steeg, Tilman Läppchen, Begoña Aguilera, Harm T Jansen, Daan Muilwijk, Rick Vermue, José W van der Hoorn, Katia Donato, Raffaella Rossin, Peter C de Visser, Maria L H Vlaming
Antisense oligonucleotides (AONs) are promising candidates for treatment of Duchenne muscular dystrophy (DMD), a severe and progressive disease resulting in premature death. However, more knowledge on the pharmacokinetics of new AON drug candidates is desired for effective application in the clinic. We assessed the feasibility of using noninvasive single-photon emission computed tomography-computed tomography (SPECT-CT) imaging to determine AON pharmacokinetics in vivo. To this end, a 2'-O-methyl phosphorothioate AON was radiolabeled with (123)I or (111)In, and administered to mdx mice, a rodent model of DMD...
April 18, 2017: Nucleic Acid Therapeutics
https://www.readbyqxmd.com/read/28412225/enhancing-tissue-permeability-with-mri-guided-preclinical-focused-ultrasound-system-in-rabbit-muscle-from-normal-tissue-to-vx2-tumor
#13
Yao Sun, Xiaobing Xiong, Darpan Pandya, Youngkyoo Jung, Akiva Mintz, Satoru Hayasaka, Thaddeus J Wadas, King C P Li
High Intensity Focused Ultrasound (HIFU) is an emerging noninvasive, nonionizing physical energy based modality to ablate solid tumors with high power, or increase local permeability in tissues/tumors in pulsed mode with relatively low power. Compared with traditional ablative HIFU, nondestructive pulsed HIFU (pHIFU) is present in the majority of novel applications recently developed for enhancing the delivery of drugs and genes. Previous studies have demonstrated the capability of pHIFU to change tissue local permeability for enhanced drug delivery in both mouse tumors and mouse muscle...
April 12, 2017: Journal of Controlled Release: Official Journal of the Controlled Release Society
https://www.readbyqxmd.com/read/28411747/the-impact-of-carotid-or-intracranial-atherosclerosis-on-perioperative-stroke-in-patients-undergoing-open-aortic-arch-surgery
#14
Ken-Ichi Imasaka, Eiki Tayama, Yukihiro Tomita
OBJECTIVES: This study aimed to clarify the impact of carotid or intracranial atherosclerosis on perioperative stroke in patients undergoing open aortic arch surgery. METHODS: Between 2008 and 2015, 200 consecutive patients underwent elective aortic arch surgery with selective antegrade cerebral perfusion and moderate hypothermic circulatory arrest. Nonselective screening for carotid or intracranial atherosclerosis was performed using carotid ultrasonography or magnetic resonance angiography...
May 2017: Journal of Thoracic and Cardiovascular Surgery
https://www.readbyqxmd.com/read/28410289/initial-experience-with-real-time-hybrid-single-photon-emission-computed-tomography-computed-tomography-guided-percutaneous-transthoracic-needle-biopsy
#15
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
#16
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/28407792/treatment-of-post-anesthesia-dementia-with-perispinal-etanercept-injection-and-hyperbaric-oxygen-therapy-a-case-report
#17
Steve Best, Dan G Pavel
BACKGROUND: We report on the first case of successful treatment for post-anesthesia dementia with perispinal etanercept injection combined with hyperbaric oxygen therapy. CASE PRESENTATION: Our patient was a 77-year-old Caucasian man of Mexican ethnicity who presented to our clinic 4.5 years after a knee replacement surgery. Immediately post-surgery, the patient began to show dramatic cognitive, physical, and emotional impairment compared with his presurgical state; these symptoms were still present when he arrived at our clinic...
April 14, 2017: Journal of Medical Case Reports
https://www.readbyqxmd.com/read/28407050/infarct-size-left-ventricular-function-and-prognosis-in-women-compared-to-men-after-primary-percutaneous-coronary-intervention-in-st-segment-elevation-myocardial-infarction-results-from-an-individual-patient-level-pooled-analysis-of-10-randomized-trials
#18
Ioanna Kosmidou, Björn Redfors, Harry P Selker, Holger Thiele, Manesh R Patel, James E Udelson, E Magnus Ohman, Ingo Eitel, Christopher B Granger, Akiko Maehara, Ajay Kirtane, Philippe Généreux, Paul L Jenkins, Ori Ben-Yehuda, Gary S Mintz, Gregg W Stone
Aim: Studies have reported less favourable outcomes in women compared with men after primary percutaneous coronary intervention (PCI) in ST-segment elevation myocardial infarction (STEMI). Whether sex-specific differences in the magnitude or prognostic impact of infarct size or post-infarction cardiac function explain this finding is unknown. Methods and results: We pooled patient-level data from 10 randomized primary PCI trials in which infarct size was measured within 1 month (median 4 days) by either cardiac magnetic resonance imaging or technetium-99m sestamibi single-photon emission computed tomography...
April 12, 2017: European Heart Journal
https://www.readbyqxmd.com/read/28406042/attributes-of-nuclear-imaging-centers-impacting-physician-referrals-for-single-photon-emission-computed-tomography-myocardial-perfusion-imaging-tests
#19
Junlong Li, Christy R Houle, James R Spalding, Hongbo Yang, Cheryl Q Xiang, Therese M Kitt, Rita M Kristy, Eric Q Wu
AIM: To evaluate nuclear imaging center attributes that cardiologists and primary care physicians (PCPs) consider when referring patients for single-photon emission computed tomography myocardial perfusion imaging (SPECT-MPI) tests, and how these attributes impact physician referral decisions in the United States. METHODS: A targeted literature review and seven one-to-one interviews with physicians and imaging center directors were conducted to identify attributes that could impact physicians' referral decisions...
April 13, 2017: Journal of Medical Economics
https://www.readbyqxmd.com/read/28405882/iq-spect-for-thallium-201-myocardial-perfusion-imaging-effect-of-normal-databases-on-quantification
#20
Takahiro Konishi, Kenichi Nakajima, Koichi Okuda, Hiroto Yoneyama, Shinro Matsuo, Takayuki Shibutani, Masahisa Onoguchi, Seigo Kinuya
OBJECTIVE: Although IQ-single-photon emission computed tomography (SPECT) provides rapid acquisition and attenuation-corrected images, the unique technology may create characteristic distribution different from the conventional imaging. This study aimed to compare the diagnostic performance of IQ-SPECT using Japanese normal databases (NDBs) with that of the conventional SPECT for thallium-201 ((201)Tl) myocardial perfusion imaging (MPI). METHODS: A total of 36 patients underwent 1-day (201)Tl adenosine stress-rest MPI...
April 12, 2017: Annals of Nuclear Medicine
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