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Annals of Nuclear Medicine

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https://www.readbyqxmd.com/read/28695498/fmiso-accumulation-in-tumor-is-dependent-on-glutathione-conjugation-capacity-in-addition-to-hypoxic-state
#1
Yukiko Masaki, Yoichi Shimizu, Takeshi Yoshioka, Ken-Ichi Nishijima, Songji Zhao, Kenichi Higashino, Yoshito Numata, Nagara Tamaki, Yuji Kuge
OBJECTIVE: (18)F-fluoromisonidazole (FMISO), a well-known PET imaging probe for diagnosis of hypoxia, is believed to accumulate in hypoxic cells via covalent binding with macromolecules after reduction of the nitro group. Previously, we showed the majority of (18)F-FMISO was incorporated into low-molecular-weight metabolites in hypoxic tumors, and the glutathione conjugate of reduced FMISO (amino-FMISO-GS) distributed in the tumor hypoxic regions as revealed by imaging mass spectrometry (IMS)...
July 10, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28695497/comparison-of-ctac-and-prone-imaging-for-the-detection-of-coronary-artery-disease-using-czt-spect
#2
Shimpei Ito, Akihiro Endo, Taiji Okada, Taku Nakamura, Takashi Sugamori, Nobuyuki Takahashi, Hiroyuki Yoshitomi, Kazuaki Tanabe
BACKGROUND: Cadmium-zinc-telluride (CZT) cameras have improved the evaluation of patients with chest pain. However, inferior/inferolateral attenuation artifacts similar to those seen with conventional Anger cameras persist. We added prone acquisitions and CT attenuation correction (CTAC) to the standard supine image acquisition and analyzed the resulting examinations. METHODS AND RESULTS: Seventy-two patients referred for invasive coronary angiography (CAG), and who also underwent rest/stress myocardial perfusion imaging (MPI) on a CZT camera in the supine and prone positions plus CTAC imaging, to examine known or suspected CAD between April 2013 and March 2014 were included...
July 10, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28689358/comparison-of-bayesian-penalized-likelihood-reconstruction-versus-os-em-for-characterization-of-small-pulmonary-nodules-in-oncologic-pet-ct
#3
Brandon A Howard, Rustain Morgan, Matthew P Thorpe, Timothy G Turkington, Jorge Oldan, Olga G James, Salvador Borges-Neto
OBJECTIVE: To determine whether the recently introduced Bayesian penalized likelihood PET reconstruction (Q.Clear) increases the visual conspicuity and SUVmax of small pulmonary nodules near the PET resolution limit, relative to ordered subset expectation maximization (OS-EM). METHODS: In this institutional review board-approved and HIPAA-compliant study, 29 FDG PET/CT scans performed on a five-ring GE Discovery IQ were retrospectively selected for pulmonary nodules described in the radiologist's report as "too small to characterize", or small lung nodules in patients at high risk for lung cancer...
July 8, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28689357/cross-calibration-of-123-i-meta-iodobenzylguanidine-heart-to-mediastinum-ratio-with-d-spect-planogram-and-anger-camera
#4
Kenichi Nakajima, Koichi Okuda, Kunihiko Yokoyama, Tatsuya Yoneyama, Shiro Tsuji, Hiroyuki Oda, Mitsuhiro Yoshita, Koji Kubota
BACKGROUND: Cardiac (123)I-meta-iodobenzylguanidine (MIBG) uptake is quantified using the heart-to-mediastinum ratio (HMR) with an Anger camera. The relationship between HMR determined using D-SPECT with a cadmium-zinc-telluride detector and an Anger camera is not fully understood. Therefore, the present study aimed to define this relationship using images derived from a phantom and from patients. METHODS: Cross-calibration phantom studies using an Anger camera with a low-energy high-resolution (LEHR) collimator and D-SPECT, and clinical (123)I-MIBG studies proceeded in 40 consecutive patients (80 studies)...
July 8, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28689356/fluorodeoxyglucose-positron-emission-tomography-computed-tomography-performs-better-than-contrast-enhanced-computed-tomography-for-metastasis-evaluation-in-the-initial-staging-of-pancreatic-adenocarcinoma
#5
Sampath Santhosh, Bhagwant Rai Mittal, Deepak Kumar Bhasin, Surinder Singh Rana, Rajesh Gupta, Ashim Das, Ritambhra Nada
OBJECTIVE: To evaluate the additional role of FDG-PET/CT to the conventional multiphasic CECT in the initial staging of pancreatic adenocarcinoma. METHODS: 54 patients diagnosed with pathologically proven pancreatic malignancy underwent FDG-PET/CECT. The sensitivity, specificity, PPV, NPV, and accuracy of PET/CT and CECT for nodal and metastatic staging were calculated. The statistical difference was calculated by McNemar's test. RESULTS: Of 54 patients, 15 had distal metastasis...
July 8, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28688088/early-stimulated-thyroglobulin-for-response-prediction-after-recombinant-human-thyrotropin-aided-radioiodine-therapy
#6
Hee Jeong Park, Jung-Joon Min, Hee-Seung Bom, Jahae Kim, Ho-Chun Song, Seong Young Kwon
OBJECTIVE: Measurement of recombinant human thyrotropin (rhTSH)-stimulated thyroglobulin (Tg) is generally recommended 72 h after the second rhTSH injection. However, due to the acute effect of I-131 on thyrocytes, Tg measured after radioiodine therapy (RIT) would not accurately reflect the thyroid tissue burden. We aimed to determine predictive values of serum Tg level measured just before rhTSH-aided RIT and to compare the results obtained just after RIT in patients with differentiated thyroid carcinoma (DTC)...
July 7, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28677070/i-131-biokinetics-of-remnant-normal-thyroid-tissue-and-residual-thyroid-cancer-in-patients-with-differentiated-thyroid-cancer-comparison-between-recombinant-human-tsh-administration-and-thyroid-hormone-withdrawal
#7
Chae Moon Hong, Choon-Young Kim, Seung Hyun Son, Ji-Hoon Jung, Chang-Hee Lee, Ju Hye Jeong, Shin Young Jeong, Sang-Woo Lee, Jaetae Lee, Byeong-Cheol Ahn
OBJECTIVE: The aim of this study was to assess I-131 biokinetics in thyroid cancer and remnant tissue in patients with differentiated thyroid cancer using whole-body scan (WBS) and SPECT images acquired after I-131 therapy. The influence of thyroid stimulating hormone (TSH) stimulation method on the kinetics was also evaluated. METHODS: A total of 57 patients who received I-131 therapy (2.96-7.4 GBq) were retrospectively included. TSH stimulation was achieved by recombinant human thyrotropin (rhTSH) or by thyroid hormone withdrawal (THW)...
July 4, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28677069/high-fdg-uptake-on-pet-is-associated-with-negative-cell-to-cell-adhesion-molecule-e-cadherin-expression-in-lung-adenocarcinoma
#8
Kotaro Higashi, Yoshimichi Ueda, Miyako Shimasaki, Yasuhito Ishigaki, Yuka Nakamura, Manabu Oguchi, Tsutomu Takegami, Naoto Watanabe
OBJECTIVES: E-cadherin is a main cell-to-cell adhesion molecule. A negative expression of E-cadherin correlates with distant metastasis in lung cancer. Recently, it was reported that there is an association between FDG uptake on PET and epithelial-mesenchymal transition (EMT) in non-small cell lung cancer. Downregulation of E-cadherin is one of the best markers of EMT. The purpose of this study was to compare E-cadherin expression with FDG uptake on PET, cell differentiation, aggressiveness and post-operative recurrence in patients with lung adenocarcinoma, and to investigate whether FDG uptake on PET is associated with E-cadherin expression...
July 4, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28664319/effect-of-resolution-recovery-using-graph-plots-on-regional-cerebral-blood-flow-in-healthy-volunteers
#9
Nobuhiro Yada, Hideo Onishi, Masahiro Miyai, Kentarou Ozasa, Takashi Katsube, Keiichi Onoda, Masuo Haramoto, Yasushi Yamamoto, Shuhei Yamaguchi, Hajime Kitagaki
PURPOSE: We evaluated the effect of resolution recovery (RR) using graph plots on regional cerebral blood flow (rCBF) in brain perfusion single-photon emission computed tomography (SPECT) images derived from healthy volunteers and patients diagnosed with probable Alzheimer's disease. METHOD: We acquired brain perfusion SPECT images with scatter correction (SC), computed tomography-based attenuation correction (CTAC), and RR from a three-dimensional brain phantom and from healthy volunteers...
June 29, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28646331/textural-features-of-18-f-fdg-pet-after-two-cycles-of-neoadjuvant-chemotherapy-can-predict-pcr-in-patients-with-locally-advanced-breast-cancer
#10
Lin Cheng, Jianping Zhang, Yujie Wang, Xiaoli Xu, Yongping Zhang, Yingjian Zhang, Guangyu Liu, Jingyi Cheng
OBJECTIVE: This study was designed to evaluate the utility of textural features for predicting pathological complete response (pCR) to neoadjuvant chemotherapy (NAC). METHODS: Sixty-one consecutive patients with locally advanced breast cancer underwent (18)F-FDG PET/CT scanning at baseline and after the second course of NAC. Changes to imaging parameters [maximum standardized uptake value (SUVmax), metabolic tumor volume (MTV), total lesion glycolysis (TLG)] and textural features (entropy, coarseness, skewness) between the 2 scans were measured by two independent radiologists...
June 23, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28639126/a-comparison-of-five-partial-volume-correction-methods-for-tau-and-amyloid-pet-imaging-with-18-f-thk5351-and-11-c-pib
#11
Miho Shidahara, Benjamin A Thomas, Nobuyuki Okamura, Masanobu Ibaraki, Keisuke Matsubara, Senri Oyama, Yoichi Ishikawa, Shoichi Watanuki, Ren Iwata, Shozo Furumoto, Manabu Tashiro, Kazuhiko Yanai, Kohsuke Gonda, Hiroshi Watabe
PURPOSE: To suppress partial volume effect (PVE) in brain PET, there have been many algorithms proposed. However, each methodology has different property due to its assumption and algorithms. Our aim of this study was to investigate the difference among partial volume correction (PVC) method for tau and amyloid PET study. METHODS: We investigated two of the most commonly used PVC methods, Müller-Gärtner (MG) and geometric transfer matrix (GTM) and also other three methods for clinical tau and amyloid PET imaging...
June 21, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28612247/-18-f-fluorothymidine-pet-imaging-in-gliomas-an-update
#12
Alexandra Nikaki, George Angelidis, Roxani Efthimiadou, Ioannis Tsougos, Varvara Valotassiou, Konstantinos Fountas, Vasileios Prasopoulos, Panagiotis Georgoulias
Brain neoplasms constitute a group of tumors with discrete differentiation grades, and therefore, course of disease and prognosis. Magnetic resonance imaging (MRI) remains the gold standard method for the investigation of central nervous system tumors. However, MRI suffers certain limitations, especially if radiation therapy or chemotherapy has been previously applied. On the other hand, given the development of newer radiopharmaceuticals, positron emission tomography (PET) aims to a better investigation of brain tumors, assisting in the clinical management of the patients...
June 13, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28547521/validation-of-the-cingulate-island-sign-with-optimized-ratios-for-discriminating-dementia-with-lewy-bodies-from-alzheimer-s-disease-using-brain-perfusion-spect
#13
Etsuko Imabayashi, Tsutomu Soma, Daichi Sone, Tadashi Tsukamoto, Yukio Kimura, Noriko Sato, Miho Murata, Hiroshi Matsuda
OBJECTIVE: Dementia with Lewy bodies (DLB) is often cited as the second most common dementia after Alzheimer's disease (AD). It is clinically important to distinguish DLB from AD because specific side effects of antipsychotic drugs are limited to DLB. The relative preservation of cingulate glucose metabolism in the posterior cingulate gyri versus that in the precuni, known as the cingulate island sign (CIS), in patients with DLB compared with AD is supposed to be highly specific for diagnosing DLB...
May 25, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28516335/prognostic-value-of-pre-treatment-18-f-fdg-pet-uptake-in-small-cell-lung-cancer
#14
Meryem Aktan, Mehmet Koc, Gul Kanyilmaz, Berrin Benli Yavuz
PURPOSE: Small-cell lung cancer (SCLC) is an aggressive disease, despite an initially favorable response to treatment, and its prognosis is still poor. Multiple parameters have been studied as possible prognostic factors, but none of them are reliable enough to change the treatment approach. (18)F-fluorodeoxyglucose-positron emission tomography (FDG-PET) is a novel imaging technique for staging of SCLC. The aim of this study was to evaluate the prognostic value of pre-treatment FDG-PET parameters on clinical outcome in limited stage (LS) SCLC patients treated with curative thoracic radiotherapy (RT) and chemotherapy...
May 17, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28497429/pathogenesis-and-fdg-pet-ct-findings-of-epstein-barr-virus-related-lymphoid-neoplasms
#15
REVIEW
Akira Toriihara, Reiko Nakajima, Ayako Arai, Masashi Nakadate, Koichiro Abe, Kazunori Kubota, Ukihide Tateishi
Epstein-Barr virus (EBV) is one of the most common viruses, infecting more than 90% of the adult population worldwide. EBV genome is detected in some lymphoid neoplasms. Not only their histopathological subtypes, but also their backgrounds and their clinical courses are variable. A number of B-cell lymphoproliferative disorders associated with the immunocompromised state are related to EBV infection. The incidences of these disorders have been increasing along with generalization of organ transplantations and use of immunosuppressive treatments...
May 11, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28470631/fdg-pet-ct-predicts-survival-and-lung-metastasis-of-hypopharyngeal-cancer-in-a-multi-institutional-retrospective-study
#16
Hidenori Suzuki, Katsuhiko Kato, Masami Nishio, Tsuneo Tamaki, Yasushi Fujimoto, Mariko Hiramatsu, Nobuhiro Hanai, Takeshi Kodaira, Yoshiyuki Itoh, Shinji Naganawa, Michihiko Sone, Yasuhisa Hasegawa
OBJECTIVES: We investigated a possible correlation between the maximum standardized uptake value (SUVmax), which is assessed by pretreatment (18)F-fluorodeoxyglucose positron emission tomography with computed tomography, and the overall survival (OS) in patients with hypopharyngeal squamous cell carcinoma from two institutions on long-term follow-up, and examined whether SUVmax is correlated with several survival outcomes, including lung metastasis-free survival. METHODS: A total of 81 patients were enrolled...
May 3, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28470630/characteristics-of-single-and-dual-photopeak-energy-window-acquisitions-with-thallium-201-iq-spect-ct-system
#17
Takayuki Shibutani, Masahisa Onoguchi, Hiroto Yoneyama, Takahiro Konishi, Shinro Matsuo, Kenichi Nakajima, Seigo Kinuya
OBJECTIVES: Although dual-energy (DE) acquisition with conventional (201)Tl myocardial perfusion SPECT has several advantages such as improved attenuation of the inferior wall and increased acquisition counts, the characteristics of IQ-SPECT have not been fully evaluated. We evaluate the difference of characteristics between single-energy (SE) and dual-energy (DE) imaging using (201)Tl myocardial IQ-SPECT. METHODS: Two myocardial phantoms were created simulating normal myocardium and infarction of the inferior wall...
May 3, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28456877/diagnostic-performance-of-a-computer-assisted-diagnosis-system-for-bone-scintigraphy-of-newly-developed-skeletal-metastasis-in-prostate-cancer-patients-search-for-low-sensitivity-subgroups
#18
Mitsuru Koizumi, Kazuki Motegi, Masamichi Koyama, Takashi Terauchi, Takeshi Yuasa, Junji Yonese
PURPOSE: The computer-assisted diagnostic system for bone scintigraphy (BS) BONENAVI is used to evaluate skeletal metastasis. We investigated its diagnostic performance in prostate cancer patients with and without skeletal metastasis and searched for the problems. METHODS: An artificial neural network (ANN) value was calculated in 226 prostate cancer patients (124 with skeletal metastasis and 101 without) using BS. Receiver operating characteristic curve analysis was performed and the sensitivity and specificity determined (cutoff ANN = 0...
April 29, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28451991/-18-f-fp-dtbz-pet-study-in-a-lactacystin-treated-rat-model-of-parkinson-disease
#19
Chi-Chang Weng, Siao-Lan Huang, Zi-An Chen, Kun-Ju Lin, Ing-Tsung Hsiao, Tzu-Chen Yen, Mei-Ping Kung, Shiaw-Pyng Wey, Ching-Han Hsu
OBJECTIVE: Lactacystin has been used to establish rodent models of Parkinson disease (PD), with cerebral α-synuclein inclusions. This study evaluated the uptake of [(18)F]9-fluoropropyl-(+)-dihydrotetrabenazine ([(18)F]FP-(+)-DTBZ), a vesicular monoamine transporter type 2 (VMAT2)-targeting radiotracer, through positron emission tomography (PET) in lactacystin-treated rat brains. METHODS: Adult male Sprague-Dawley rats were randomly treated with a single intracranial dose of lactacystin (2 or 5 μg) or saline (served as the sham control) into the left medial forebrain bundle...
April 27, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28585058/pictorial-review-of-18-f-fdg-pet-ct-findings-in-musculoskeletal-lesions
#20
Mana Ishibashi, Yoshio Tanabe, Shinya Fujii, Toshihide Ogawa
We herein reviewed (18)F-fluoro-2-deoxyglucose ((18)F-FDG) positron emission tomography (PET)/computed tomography (CT) findings in a number of musculoskeletal lesions including malignant tumors, benign tumors, and tumor-like lesions with correlations to other radiographic imaging modalities, and described the diversity of the (18)F-FDG PET/CT findings of this entity. Malignant primary musculoskeletal tumors are typically (18)F-FDG avid, whereas low-grade malignant tumors show mild uptake. Benign musculoskeletal tumors generally show a faint uptake of (18)F-FDG, and tumor-like conditions also display various uptake patterns of (18)F-FDG...
July 2017: Annals of Nuclear Medicine
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