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https://www.readbyqxmd.com/read/28646614/does-breast-mri-background-parenchymal-enhancement-indicate-metabolic-activity-qualitative-and-3d-quantitative-computer-imaging-analysis
#1
Eralda Mema, Victoria L Mango, Xiaotao Guo, Jenika Karcich, Randy Yeh, Ralph T Wynn, Binsheng Zhao, Richard S Ha
PURPOSE: To investigate whether the degree of breast magnetic resonance imaging (MRI) background parenchymal enhancement (BPE) is associated with the amount of breast metabolic activity measured by breast parenchymal uptake (BPU) of 18F-FDG on positron emission tomography / computed tomography (PET/CT). MATERIALS AND METHODS: An Institutional Review Board (IRB)-approved retrospective study was performed. Of 327 patients who underwent preoperative breast MRI from 1/1/12 to 12/31/15, 73 patients had 18F-FDG PET/CT evaluation performed within 1 week of breast MRI and no suspicious findings in the contralateral breast...
June 24, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28646462/diagnostic-utility-of-pet-ct-with-18-f-dopa-and-18-f-fdg-in-persistent-or-recurrent-medullary-thyroid-carcinoma-the-importance-of-calcitonin-and-carcinoembryonic-antigen-cutoff
#2
Ana Reyes Romero-Lluch, Juan Ignacio Cuenca-Cuenca, Raquel Guerrero-Vázquez, Antonio Jesús Martínez-Ortega, Juan Luis Tirado-Hospital, Isabel Borrego-Dorado, Elena Navarro-González
PURPOSE: This study sought to evaluate and compare the utility of 18-F-fluorodihydroxyphenylalanine ((18)F-DOPA) and 18-F-fluorodeoxyglucose ((18)F-FDG) positron emission tomography/computed tomography (PET/CT) for identification of lesions in patients with recurrent medullary thyroid carcinoma (MTC). In addition, we analyzed the correlation between the calcitonin (Ct), carcinoembryonic antigen (CEA) levels, each doubling time (DT), and PET positivity. We evaluated the reliability of the 150 pg/mL Ct cutoff set by the American Thyroid Association guidelines for further imaging (including (18)F-DOPA PET/CT)...
June 23, 2017: European Journal of Nuclear Medicine and Molecular Imaging
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
#3
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/28646013/doxorubicin-effect-on-myocardial-metabolism-as-a-pre-requisite-for-subsequent-development-of-cardiac-toxicity-a-translational-18-f-fdg-pet-ct-observation
#4
Matteo Bauckneht, Giulia Ferrarazzo, Francesco Fiz, Silvia Morbelli, Matteo Sarocchi, Fabio Pastorino, Alberto Ghidella, Elena Pomposelli, Maurizio Miglino, Pietro Ameri, Laura Emionite, Flavia Ticconi, Eleonora Arboscello, Ambra Buschiazzo, Elena Augusta Massimelli, Salvatore Fiordoro, Anna Borra, Vanessa Cossu, Annalisa Bozzano, Adalberto Ibatici, Mirco Ponzoni, Paolo Spallarossa, Andrea Gallamini, Paolo Bruzzi, Gianmario Sambuceti, Cecilia Marini
The present translational study aimed to verify whether serial (18)F-fluoro-deoxyglucose Positron Emission Tomography/Computed Tomography (FDG-PET/CT), predicts doxorubicin cardiotoxicity. Methods: Fifteen athymic mice were treated with intravenous administration of saline (n = 5), doxorubicin 5 mg/Kg (n = 5) or doxorubicin 7.5 mg/Kg (n = 5) and submitted to dynamic microPET scan to estimate left ventricular glucose consumption (LV-MRGlu) before and after chemotherapy. Thereafter, we retrospectively identified 69 patients successfully treated with Adriamycin, Bleomycin, Vinblastine, and Dacarbazine (ABVD) regimen for Hodgkin's Disease (HD) and submitted to four consecutive FDG-PET/CT scans...
June 23, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28645685/concordance-between-brain-18-f-fdg-pet-and-cerebrospinal-fluid-biomarkers-in-diagnosing-alzheimer-s-disease
#5
S Rubí, A Noguera, S Tarongí, M Oporto, A García, H Vico, A Espino, M J Picado, A Mas, C Peña, G Amer
OBJECTIVES: Cortical posterior hypometabolism on PET imaging with (18)F-FDG (FDG-PET), and altered levels of Aß1-42 peptide, total Tau (tTau) and phosphorylated Tau (pTau) proteins in cerebrospinal fluid (CSF) are established diagnostic biomarkers in Alzheimer's disease (AD). An evaluation has been made of the concordance and relationship between the results of FDG-PET and CSF biomarkers in symptomatic patients with suspected AD. MATERIAL AND METHODS: A retrospective review was carried out on 120 patients with cognitive impairment referred to our Cognitive Neurology Unit, and who were evaluated by brain FDG-PET and a lumbar puncture for CSF biomarkers...
June 20, 2017: Revista Española de Medicina Nuclear e Imagen Molecular
https://www.readbyqxmd.com/read/28645096/incidental-focal-uptake-in-the-breast-and-axilla-on-fdg-pet-clinical-considerations-and-differential-diagnosis
#6
Andrea L Magee, Brittany Z Dashevsky, Kayleen Jahangir, Kirti Kulkarni
Incidental focal FDG uptake in the breast or axilla on PET/CT performed for evaluation of extra-mammary primary disease presents a diagnostic challenge. Radiologists must consider a broad differential diagnosis, assess clinical history, and judiciously employ other imaging modalities such as mammography, ultrasound and MRI in the pursuit of findings which help narrow the differential diagnosis. Tissue sampling may be reserved for nondiagnostic imaging scenarios.
June 15, 2017: Clinical Imaging
https://www.readbyqxmd.com/read/28644064/frequent-vomiting-attacks-in-a-patient-with-lhermitte-duclos-disease-a-rare-pathophysiology-of-cerebellar-lesions
#7
Chika Somagawa, Tomonori Ono, Ryoko Honda, Hiroshi Baba, Takeshi Hiu, Ryujiro Ushijima, Keisuke Toda, Kei Sato, Masahiro Ito, Keisuke Tsutsumi
Lhermitte-Duclos disease (LDD) is a neurological disease caused by a hamartomatous lesion in the cerebellum. Clinically, LDD is commonly associated with progressive space-occupying lesion effects in the posterior fossa, increasing intracranial pressure, occlusive hydrocephalus, and focal neurological deficits of adjacent structures. The authors report the case of a 10-year-old boy with LDD who had been suffering from vomiting attacks (VAs). These VAs had been brief in duration but extremely frequent, and they had been resistant to antiemetic drugs since the early postnatal period...
June 23, 2017: Journal of Neurosurgery. Pediatrics
https://www.readbyqxmd.com/read/28643722/endogenous-endophthalmitis-caused-by-cryptococcus-neoformans-var-gattii-mimicking-choroidal-tumor-from-positron-emission-tomography-computed-tomography-to-histopathology
#8
Chun-Ju Lin, Wen-Lu Chen, Jane-Ming Lin, Peng-Tai Tien, Yi-Yu Tsai
A 60-year-old immunocompetent female with pneumonia history about 10 years ago suffered from blurred vision overall survival for 3 weeks. Common cold with headache and unintentional body weight loss was also noted recently. Choroidal detachment simulating choroidal tumor was observed in the temporal quadrant. The 18F-fluoro-2-deoxyglucose (FDG) positron-emission tomography/computed tomography (CT) scan showed focal, mild to moderate FDG uptake in the left lateral orbit, and an enhanced lesion was seen on the recent CT scan...
June 2017: Indian Journal of Ophthalmology
https://www.readbyqxmd.com/read/28643307/-application-of-magnetic-resonance-in-non-operative-treatment-strategy-for-rectal-cancer
#9
Yi Wang, Gong Chen
The primary curative modality for localized rectal cancer is total mesorectal excision (TME). Local control rate of rectal cancer has been improved after neoadjuvant chemoradiotherapy and even pathological complete response (pCR) has been demonstrated in a significant minority. Patients who achieve pCR to neoadjuvant chemoradiotherapy have an excellent prognosis compared with those without pCR. If the patients with complete response to neoadjuvant chemoradiation can be demonstrated by clinical findings and medical imaging (cCR), a non-operative management (NOM) strategy may be pursued to preserve sphincter function and avoid complications induced by TME, which is a new tendency in the treatment of rectal cancer in recent years...
June 25, 2017: Zhonghua Wei Chang Wai Ke za Zhi, Chinese Journal of Gastrointestinal Surgery
https://www.readbyqxmd.com/read/28643145/the-prognostic-value-of-volume-based-parameters-using-18-f-fdg-pet-ct-in-gastric-cancer-according-to-her2-status
#10
Ji Soo Park, Nare Lee, Seung Hoon Beom, Hyo Song Kim, Choong-Kun Lee, Sun Young Rha, Hyun Cheol Chung, Mijin Yun, Arthur Cho, Minkyu Jung
BACKGROUND: We aimed to find the clinical value of metastatic tumor burden evaluated with F18-FDG PET/CT in gastric cancer patients, considering the human epidermal growth factor receptor 2 (HER2) status. METHODS: We retrospectively reviewed 124 patients with locally advanced or metastatic gastric cancer at Yonsei Cancer Center between January 2006 and December 2014 who had undergone baseline FDG PET/CT before first-line chemotherapy. We measured the maximum standardized uptake value from the primary tumor (SUVmax) and whole-body (WB) PET/CT parameters, including WB SUVmax, WB SUVmean, WB metabolic tumor volume (WB MTV), and WB total lesion glycolysis (WB TLG), in all metabolically active metastatic lesions (SUV threshold ≥2...
June 22, 2017: Gastric Cancer
https://www.readbyqxmd.com/read/28640092/glucose-metabolism-of-visceral-adipose-tissue-measured-by-18f-fdg-pet-ct-is-related-to-the-presence-of-colonic-adenoma
#11
Hai-Jeon Yoon, Bom Sahn Kim, Ko Eun Lee, Chang Mo Moon, Jang Yoo, Jung-Sook Kim, Yemi Kim
This study investigated the relationships between the area and metabolic activity of adipose tissue and the presence of colorectal adenoma (CRA). Our institutional review board approved the study and waived informed consent. A total of 212 subjects who underwent fluorine 18 fluorodeoxyglucose (FDG) positron emission tomography (PET)/computed tomography (CT) and colonoscopy for routine health check-ups were enrolled. The volumetric parameters of areas of visceral (VATav), subcutaneous (SATav), and total adipose tissue (TATav) and calculated visceral-to-subcutaneous adipose tissue ratio (VSR) and visceral-to-total adipose tissue ratio (VAR) were considered...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28640086/diagnostic-value-of-18f-fluorodeoxyglucose-uptake-parameters-to-differentiate-rheumatoid-arthritis-from-other-types-of-arthritis
#12
Anu Bhattarai, Takahito Nakajima, Santosh Sapkota, Yukiko Arisaka, Azusa Tokue, Yukio Yonemoto, Yoshito Tsushima
We aimed evaluate F-fluorodeoxyglucose uptake at major joints for differentiating patients with rheumatoid arthritis (RA) from those with non-RA arthritis using F-fluorodeoxyglucose (FDG)-positron emission tomography (PET).Eighteen patients with RA (13 women; age, 66.8 ± 13.2 years) and 17 patients with non-RA (6 women; age, 50.8 ± 12.5 years) were included. Twelve joints of each patient were examined: shoulder, elbow, wrist, hip, knee, and ankle on both sides. A visual scoring (VS) system was used; quantitative parameters such as maximum standardized uptake value (SUVmax), metabolic active volume (MAV), and total lesion glycolysis (TLG) were evaluated...
June 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28639955/endotracheal-leiomyoma-mimicking-malignancy-on-18f-fdg-pet-ct-in-a-patient-with-papillary-thyroid-carcinoma
#13
Jae Pil Hwang, Seung-Won Lee, Jeong Ja Kwak, Jung Mi Park
Endotracheal leiomyoma is a rare benign lesion, accounting for approximately 1% of tracheal tumors, and generally occurs in the lower respiratory tract. Because its growth causes airway obstruction symptom, surgical treatment is generally suggested after detection. We report a case with leiomyoma of the cervical endotracheal space showing intense FDG uptake on F-FDG PET/CT mimicking malignancy in a 79-year-old woman with papillary thyroid carcinoma.
June 20, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28639954/rare-endobronchial-inflammatory-myofibroblastic-tumor-in-pediatric-patient-detected-on-pet-ct-imaging
#14
Pelin Ozcan Kara, Zehra Pinar Koc, Elvan Caglar Citak, Ali Nayci, Gokhan Berktug Bahadir, Taylan Kara
Inflammatory myofibroblastic tumor (IMT) can be seen in all age groups, although it is more common in children and adolescents. We report the FDG PET/CT findings in an 8-year-old boy with endobronchial IMT. Endobronchial IMT is more commonly seen in young adults.
June 20, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28639953/impressive-paget-disease-of-the-lumbar-spine-masks-the-coexisting-multiple-myeloma
#15
Xiao Zhong, Yunxia Ye, Xiaohong Ou
Multimodality imaging, including MRI, bone scintigraphy, and FDG PET/CT, was performed to evaluate a 49-year-old man who had right hip and lower limb pain for 4 months because possible malignancy was suspected. All 3 modalities showed obvious Paget disease of the lumbar spine. However, less impressive increased activity was also noted on FDG PET/CT images. Subsequent laboratory tests and pathology examination leads to diagnosis of multiple myeloma. Our case further confirms the notion that it is insufficient to focus on the most obvious and unintentionally overlook the less impressive findings in interpreting nuclear medicine images...
June 20, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28639122/targeting-prostate-specific-membrane-antigen-psma-with-f-18-labeled-compounds-the-influence-of-prosthetic-groups-on-tumor-uptake-and-clearance-profile
#16
Vincent Bouvet, Melinda Wuest, Justin J Bailey, Cody Bergman, Nancy Janzen, John F Valliant, Frank Wuest
PURPOSE: Prostate-specific membrane antigen (PSMA) is an important biomarker expressed in the majority of prostate cancers. The favorable positron emission tomography (PET) imaging profile of the PSMA imaging agent 2-(3-(1-carboxy-5-[(6-[(18)F]fluoro-pyridine-3-carbonyl)-amino]-pentyl)-ureido)-pentane-dioic acid [(18)F]DCFPyL in preclinical prostate cancer models and in prostate cancer patients stimulated the development and validation of other fluorine-containing PSMA inhibitors to further enhance pharmacokinetics and simplify production methods...
June 21, 2017: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/28639049/multiparametric-voxel-based-analyses-of-standardized-uptake-values-and-apparent-diffusion-coefficients-of-soft-tissue-tumours-with-a-positron-emission-tomography-magnetic-resonance-system-preliminary-results
#17
Koji Sagiyama, Yuji Watanabe, Ryotaro Kamei, Sungtak Hong, Satoshi Kawanami, Yoshihiro Matsumoto, Hiroshi Honda
OBJECTIVES: To investigate the usefulness of voxel-based analysis of standardized uptake values (SUVs) and apparent diffusion coefficients (ADCs) for evaluating soft-tissue tumour malignancy with a PET/MR system. METHODS: Thirty-five subjects with either ten low/intermediate-grade tumours or 25 high-grade tumours were prospectively enrolled. Zoomed diffusion-weighted and fluorodeoxyglucose ((18)FDG)-PET images were acquired along with fat-suppressed T2-weighted images (FST2WIs)...
June 20, 2017: European Radiology
https://www.readbyqxmd.com/read/28638030/-characteristics-of-cerebral-glucose-metabolism-in-patients-with-cognitive-impairment-in-parkinson-s-disease
#18
Ju G Homenko, D S Susin, G V Kataeva, Ju A Irishina, I G Zavolokov
AIM: To study the relationship between early cognitive impairment symptoms and cerebral glucose metabolism in different brain regions (according to the positron emission tomography (PET) data) in Parkinson's disease (PD) in order to increase the diagnostic and treatment efficacy. MATERIAL AND METHODS: Two groups of patients with PD (stage I-III), including 11 patients without cognitive disorders and 13 with mild cognitive impairment (MCI), were examined. The control group included 10 age-matched people with normal cognition...
2017: Zhurnal Nevrologii i Psikhiatrii Imeni S.S. Korsakova
https://www.readbyqxmd.com/read/28636995/experimental-study-on-the-therapeutic-effect-and-underlining-mechanisms-of-positron-in-pancreatic-cancer-cells
#19
Ying Wang, Ming Li, Rao Diao, Brian Tung, Dalong Zhang, Yaming Li
The purpose of this study was to assess the potential therapeutic effect of positrons emitted by 18F-2-Deoxy-2-Fluoro-D-Glucose (18F-FDG) on pancreatic cancer cells and elucidate its underlying mechanisms. Pancreatic cancer cells were incubated with different radioactive concentrations of 18F-FDG and evaluated for anti-cancer properties and underlining mechanisms. In addition, three groups of tumor-bearing mice were treated with different doses of 18F-FDG weekly, the tumor growth rate was calculated, and the mice were imaged by positron emission tomography (PET) with 18F-FDG before and after treatment...
June 5, 2017: Oncotarget
https://www.readbyqxmd.com/read/28636732/positron-emission-tomography-enhancement-after-vocal-fold-injection-medialization
#20
Nazaneen Grant, Richard J Wong, Dennis H Kraus, Heiko Schoder, Ryan C Branski
The potential for the misinterpretation of positron-emission tomography (PET) scans in the context of a possible malignancy has been confirmed in a case report showing increased 18F-fluorodeoxyglucose (FDG) uptake after unilateral vocal fold augmentation medialization. We sought to expand these findings by investigating FDG uptake in a larger cohort of patients via a retrospective chart review. We examined the records of 15 adults-8 men and 7 women-who had undergone vocal fold augmentation for unilateral vocal fold paralysis and at least one subsequent PET scan...
June 2017: Ear, Nose, & Throat Journal
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