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https://www.readbyqxmd.com/read/29672464/effects-of-breathing-motion-on-pet-acquisitions-step-and-shoot-versus-continuous-bed-motion
#1
Yoshiki Owaki, Tadaki Nakahara, Takeshi Shimizu, Anne M Smith, Wing K Luk, Kazumasa Inoue, Masahiro Fukushi, Kiyotaka Nakajima
OBJECTIVES: Continuous bed motion (CBM) acquisition recently became available in whole-body PET/CT scanners in addition to the conventional step and shoot (S&S) acquisition. In this work, we compared the image quality between these acquisition methods using a phantom simulating periodic motion to mimic motion from patient breathing in a controlled manner. METHODS: PET image quality was assessed using the National Electrical Manufacturers Association IQ torso phantom filled with an F-FDG solution using a 4 : 1 target-to-background ratio...
April 18, 2018: Nuclear Medicine Communications
https://www.readbyqxmd.com/read/29671172/effects-of-whole-grain-wheat-bread-on-visceral-fat-obesity-in-japanese-subjects-a-randomized-double-blind-study
#2
Yosuke Kikuchi, Satomi Nozaki, Miki Makita, Shoji Yokozuka, Shin-Ichi Fukudome, Takashi Yanagisawa, Seiichiro Aoe
Metabolic syndrome is a risk factor for cardiovascular diseases and has become increasingly common in Japan. Epidemiological studies show inverse associations between intake of whole wheat grains and metabolic syndrome, but few dietary intervention trials have investigated the effect of whole wheat grain consumption. It was investigated whether a diet in which refined wheat bread (RW diet) was substituted by whole grain wheat bread (WW diet) would reduce visceral fat obesity in Japanese subjects. A randomized double-blind placebo-controlled intervention study was conducted in 50 Japanese subjects with body mass index (BMI) ≥ 23 kg/m2 ...
April 18, 2018: Plant Foods for Human Nutrition
https://www.readbyqxmd.com/read/29670261/body-weight-difference-between-dual-energy-x-ray-absorptiometry-and-multi-frequency-bioelectrical-impedance-analysis-attenuates-the-equivalence-of-body-composition-assessment
#3
Duong Duc Pham, Seung Ku Lee, Chol Shin, Nan Hee Kim, Chae Hun Leem
BACKGROUND/OBJECTIVES: Low agreement of body-composition analysis (BCA) using dual-energy X-ray absorptiometry (DXA) and multi-frequency bioelectrical impedance analysis (MF-BIA) has been reported. We examined whether this discrepancy is influenced by the precision of body weight (BW) measurement using DXA. SUBJECTS/METHODS: This cross-sectional study enrolled 1353 participants aged 53-83 years. A whole-body DXA scan and an eight-polar tactile-electrode impedance-meter using four electronic frequencies of 5, 50, 250, and 500 kHz were employed for BCA...
April 18, 2018: European Journal of Clinical Nutrition
https://www.readbyqxmd.com/read/29667142/pulmonary-cement-embolism-is-not-associated-with-the-cause-of-death-in-a-post-mortem-cohort-of-cement-augmented-interventions-in-the-spine
#4
Sebastian Butscheidt, Tim Rolvien, Jakob Ritter, Axel Heinemann, Hermann Vogel, Michael Amling, Klaus Püschel
PURPOSE: Complications of cement-augmented interventions (e.g., kyphoplasty) in the spine include local cement leakage and pulmonary cement embolisms (PCE). This study was conducted to determine their extent in a unique post-mortem cohort. METHODS: Retrospective analysis of post-mortem whole-body CT scans and review of autopsy results in 29 consecutive cases with cement-augmented interventions in the spine. PCE findings were graded based on cement deposits: grade 0 (no PCE), grade 1 (1-3 PCE), grade 2 (4-6 PCE), and grade 3 (> 6 or branch-shaped PCE)...
April 17, 2018: European Spine Journal
https://www.readbyqxmd.com/read/29666893/pitfalls-in-bone-density-monitoring-in-prostate-cancer-during-anti-resorptive-treatment
#5
Y-M Cheung, S K Ramchand, M Grossmann
A 74-year-old man presented to the Andrology Clinic for management of potential complications of androgen deprivation therapy for prostate cancer. He had a rising prostate-specific antigen with a concurrent rise in alkaline phosphatase and bone remodeling markers. This was despite treatment with a radical prostatectomy, androgen deprivation, and anti-resorptive therapy. A follow-up dual-energy X-ray absorptiometry scan revealed a marked increase in his bone mineral density at both the lumbar spine and femoral neck...
April 17, 2018: Osteoporosis International
https://www.readbyqxmd.com/read/29662562/the-predictive-values-of-lesion-size-f-18-fdg-avidity-and-i-131-avidity-for-the-clinical-outcome-of-i-131-treatment-in-patients-with-metastatic-differentiated-thyroid-carcinoma-only-in-the-lung
#6
Joon Ho Choi, Byung Hyun Byun, Ilhan Lim, Hansol Moon, Jihyun Park, Kyoung Jin Chang, Byung Il Kim, Chang Woon Choi, Sang Moo Lim
Purpose: We aimed to evaluate the prognostic values of radiography, F-18 FDG PET, and I-131 whole body scans in patients with lung-only metastasis from differentiated thyroid carcinoma (DTC). Methods: Between 1998 and 2013, we included 31 patients (F: 26, M: 5) with lung-only metastasis from DTC who had been treated with I-131 and underwent PET. Lung metastasis was categorized according to the size (macronodular ≥1.0 cm vs. micronodular <1.0 cm), FDG avidity (avid vs...
April 2018: Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/29658659/-effect-of-resveratrol-on-peak-bone-mass-in-growing-rats
#7
Huirong Xi, Yuhai Gao, Fangfang Yang, Wenyuan Li, Huiping Ma, Keming Chen
<b>Objective:</b> To investigate the effect of resveratrol on peak bone mineral density and bone mass in growing rats. <b>Methods:</b> Thirty-six female healthy Wistar rats were randomly divided into control group, icariin group and resveratrol group with 12 rats in each group. Icariin (25 mg·kg<sup>-1</sup>·d<sup>-1</sup>), resveratrol (8.4 mg·kg<sup>-1</sup>·d<sup>-1</sup>) or equal volume of distilled water were given by gavage to icariin group, resveratrol group and control group, respectively...
May 25, 2017: Zhejiang da Xue Xue Bao. Yi Xue Ban, Journal of Zhejiang University. Medical Sciences
https://www.readbyqxmd.com/read/29651606/age-related-apparent-diffusion-coefficients-of-lumbar-vertebrae-in-healthy-children-at-1-5-t
#8
Alexander Tschischka, Christoph Schleich, Johannes Boos, Markus Eichner, Jörg Schaper, Joel Aissa, Gerald Antoch, Dirk Klee
BACKGROUND: Diffusion-weighted magnetic resonance imaging with apparent diffusion coefficient (ADC) calculation is important for detecting bone marrow pathologies. OBJECTIVE: To investigate age-related differences of lumbar vertebral body ADC to establish normal values for healthy children. MATERIALS AND METHODS: Forty-nine healthy children without any history of oncological or hematological diseases (10.2±4.7 years, range: 0-20 years) were included in this retrospective study...
April 13, 2018: Pediatric Radiology
https://www.readbyqxmd.com/read/29650315/radiomics-based-features-for-pattern-recognition-of-lung-cancer-histopathology-and-metastases
#9
José Raniery Ferreira Junior, Marcel Koenigkam-Santos, Federico Enrique Garcia Cipriano, Alexandre Todorovic Fabro, Paulo Mazzoncini de Azevedo-Marques
BACKGROUND AND OBJECTIVES: lung cancer is the leading cause of cancer-related deaths in the world, and its poor prognosis varies markedly according to tumor staging. Computed tomography (CT) is the imaging modality of choice for lung cancer evaluation, being used for diagnosis and clinical staging. Besides tumor stage, other features, like histopathological subtype, can also add prognostic information. In this work, radiomics-based CT features were used to predict lung cancer histopathology and metastases using machine learning models...
June 2018: Computer Methods and Programs in Biomedicine
https://www.readbyqxmd.com/read/29648977/severe-tbi-patients-without-focal-lesion-but-with-behavioral-disorders-shrinkage-of-gray-matter-nuclei-and-thalamus-revealed-in-a-pilot-voxel-based-mri-study
#10
Alexis Ruet, Françoise Joyeux, Shailandra Segobin, Corinne Jokic, Béatrice Desgranges, Francis Eustache, Anne-Lise Pitel
After a traumatic brain injury (TBI), behavioral disorders can occur without major focal brain lesion and in this case, their pathophysiology remains unclear. The aim of this study is to examine whether TBI patients with behavioral disorders but without any focal damage, as observed from an initial clinical CT scan, present subtle volumetric alterations that could be measured voxel-by-voxel in the whole brain with magnetic resonance imaging (MRI). Eight severe TBI male adults with behavioral sequela but without major focal cerebral lesion and 17 age-matched controls underwent a volumetric T1-weighted 1...
March 6, 2018: Journal of Neurotrauma
https://www.readbyqxmd.com/read/29643667/role-of-preablative-stimulated-thyroglobulin-in-prediction-of-nodal-and-distant-metastasis-on-iodine-whole-body-scan
#11
Meghana Prabhu, Sanju Samson, Avinash Reddy, Sunil Hejaji Venkataramanarao, Naveen Hedne Chandrasekhar, Vijay Pillai, Vivek Shetty, Moni Abraham Koriokose, Bushan Vaidhya, Subramanian Kannan
Background: Preablative stimulated thyroglobulin (ps-Tg) is an important investigation in the follow-up of patients with Differentiated thyroid cancer(DTC) after surgery. Levels of ps-Tg >2-10 ng/ml have been suggested to predict metastasis to cervical and extracervical sites. There is still debate on the need for routine iodine whole-body scan (131 I WBS) in the management of low-to-intermediate-risk DTC patients. Objective: We analyzed our data of patients with DTC who underwent total thyroidectomy to discuss the predictability of ps-Tg on metastatic disease on the 131 I WBS...
April 2018: Indian Journal of Nuclear Medicine: IJNM: the Official Journal of the Society of Nuclear Medicine, India
https://www.readbyqxmd.com/read/29630136/body-fat-changes-in-hiv-patients-on-highly-active-antiretroviral-therapy-haart-a-longitudinal-dexa-study
#12
S Nuvoli, G Caruana, S Babudieri, P Solinas, G Pellicanò, B Piras, V Fiore, P Bagella, G M Calia, M Yue, A Spanu, G Madeddu
OBJECTIVE: We aimed to quantitatively evaluate body fat composition in a group of HIV patients treated with Highly Active Anti-retroviral Therapy (HAART) to ascertain both fat loss and fat distribution changes and to identify possible therapeutic and host related associated risk factors. PATIENTS AND METHODS: A total of 180 patients with available total body DEXA scan were assigned to a) Group 1, with clinically evident body fat changes, (BFC) and b) Group 2, without BFC...
March 2018: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/29627288/multiparametric-whole-body-mri-with-diffusion-weighted-imaging-and-adc-mapping-for-the-identification-of-visceral-and-osseous-metastases-from-solid-tumors
#13
Michael A Jacobs, Katarzyna J Macura, Atif Zaheer, Emmanuel S Antonarakis, Vered Stearns, Antonio C Wolff, Thorsten Feiweier, Ihab R Kamel, Richard L Wahl, Li Pan
RATIONALE AND OBJECTIVES: The purpose of this study was to investigate the use of multiparametric, whole-body, diffusion-weighted imaging (WB-DWI) and apparent diffusion coefficient (ADC) maps with T2 -weighted magnetic resonance imaging (MRI) at 3T for the detection and monitoring of metastatic disease in patients. MATERIALS AND METHODS: Fifty-four participants (32 healthy subjects and 22 patients) were scanned with WB-DWI methods using a 3T MRI scanner. Axial, sagittal, or coronal fat-suppressed T2 -weighted (T2 WI), T1 -weighted (T1 WI), and DWI images were acquired...
April 4, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29623244/the-relationship-between-bone-mineral-density-and-cardiovascular-function-in-duchenne-muscular-dystrophy-a-retrospective-cohort-study
#14
Tara Kervin, Mathula Thangarajh
INTRODUCTION: Duchenne muscular dystrophy (DMD) is an X-linked genetic disorder that causes progressive skeletal and cardiac muscle weakness in boys. Cardiac dysfunction is a frequent cause of death in DMD. Glucocorticoids are the standard of care in DMD. The long-term use of oral glucocorticoids in DMD is complicated by poor bone health. Epidemiological studies suggest a biological link between the loss of bone mineral density (BMD) and cardiovascular disease, including coronary artery and cerebrovascular diseases...
March 22, 2018: PLoS Currents
https://www.readbyqxmd.com/read/29621194/vibration-and-noise-in-magnetic-resonance-imaging-of-the-vocal-tract-differences-between-whole-body-and-open-air-devices
#15
Jiří Přibil, Anna Přibilová, Ivan Frollo
This article compares open-air and whole-body magnetic resonance imaging (MRI) equipment working with a weak magnetic field as regards the methods of its generation, spectral properties of mechanical vibration and acoustic noise produced by gradient coils during the scanning process, and the measured noise intensity. These devices are used for non-invasive MRI reconstruction of the human vocal tract during phonation with simultaneous speech recording. In this case, the vibration and noise have negative influence on quality of speech signal...
April 5, 2018: Sensors
https://www.readbyqxmd.com/read/29620679/diagnostic-accuracy-of-18f-fdg-pet-ct-in-the-staging-and-assessment-of-response-to-chemotherapy-in-children-with-ewing-sarcoma
#16
Antonio Ruggiero, Valerio Lanni, Alberto Librizzi, Palma Maurizi, Giorgio Attinà, Stefano Mastrangelo, Alessandro Giordano, Riccardo Riccardi
INTRODUCTION: The purpose of this study was to evaluate the potential role of fluorine-18 fluorodeoxyglucose (18F-FDG) positron-emission tomography/computed tomography (PET-CT) in the staging and assessment of chemotherapy response in Ewing sarcoma. MATERIALS AND METHODS: For 13 patients with Ewing sarcoma, whole-body FDG PET-CT was assessed for site of primary disease, disease extent, and response to therapy. Chest CT, localized magnetic resonance imaging or CT of primary site, and bone scintigrams were evaluated for imaging features of the primary lesion and presence or absence of metastatic disease...
April 3, 2018: Journal of Pediatric Hematology/oncology
https://www.readbyqxmd.com/read/29610677/potential-association-of-lmna-associated-generalized-lipodystrophy-with-juvenile-dermatomyositis
#17
Melis Sahinoz, Shafaq Khairi, Ashley Cuttitta, Graham F Brady, Amit Rupani, Rasimcan Meral, Marwan K Tayeh, Peedikayil Thomas, Meredith Riebschleger, Sandra Camelo-Piragua, Jeffrey W Innis, M Bishr Omary, Daniel E Michele, Elif A Oral
Background: Juvenile dermatomyositis (JDM) is an auto-immune muscle disease which presents with skin manifestations and muscle weakness. At least 10% of the patients with JDM present with acquired lipodystrophy. Laminopathies are caused by mutations in the lamin genes and cover a wide spectrum of diseases including muscular dystrophies and lipodystrophy. The p.T10I LMNA variant is associated with a phenotype of generalized lipodystrophy that has also been called atypical progeroid syndrome...
2018: Clinical Diabetes and Endocrinology
https://www.readbyqxmd.com/read/29607020/patterns-of-musculoskeletal-growth-and-dimensional-changes-associated-with-selection-and-developmental-plasticity-in-domestic-and-wild-strain-turkeys
#18
Kristin K Stover, Daniel M Weinreich, Thomas J Roberts, Elizabeth L Brainerd
Domestication is a type of experimental evolution in which humans have artificially selected for specific desired traits. Selected strain animals can be utilized to identify correlated responses by comparing them to the wild strain. In particular, domestic turkeys have been selected for increased body mass and high-growth rate, most significantly over the past 60 years. Yet it remains unclear how artificial selection has affected the morphology and evolution of the musculoskeletal system as a whole. Here, we compare growth rate over 21 weeks, hind limb bone scaling across ontogeny via in vivo CT scanning, and muscle proportions in wild and domestic turkeys to identify differences in structural scaling and the potential contributions of selection and developmental plasticity to whole-organism morphology...
March 2018: Ecology and Evolution
https://www.readbyqxmd.com/read/29602820/dual-modality-immunopet-and-near-infrared-fluorescence-nirf-imaging-of-pancreatic-cancer-using-an-anti-prostate-cancer-stem-cell-antigen-psca-cys-diabody
#19
Kirstin A Zettlitz, Wen-Ting K Tsai, Scott M Knowles, Naoko Kobayashi, Timothy R Donahue, Robert E Reiter, Anna M Wu
Pancreatic cancer has a high mortality rate due to late diagnosis and the tendency to invade surrounding tissues and metastasize at an early stage. A molecular imaging agent that enables both pre-surgery antigen-specific positron emission tomography (immunoPET) and intra-operative near-infrared fluorescent (NIRF)-guidance could benefit diagnosis, staging and surgical resection of pancreatic cancer, which remains the only curative treatment. Methods: A dually labeled probe was developed based on A2 cys-diabody (A2cDb) targeting the cell surface antigen prostate stem cell antigen (PSCA) that is expressed in a majority of pancreatic cancers...
March 30, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/29600103/report-of-a-lung-carcinoma-extended-to-the-left-atrium-through-pulmonary-vein
#20
Federico Cipriano, Lycio U Dessoti, Alfredo José Rodrigues, Walter Vilella de Andrade Vicente, Fernando Chahud, Paulo Roberto B Evora
Lung cancers may extend along or grow through the pulmonary veins to invade or lie within the left atrium (LA). A 62-year-old man, previously healthy, presented with 1-month ventilatory-independent right hemithorax back pain, dry cough and large effort dyspnea. He also referred weight loss of 12 kg in 10 months and denied hemoptysis. As antecedents, he smoked for 40 years and moderate daily alcoholism. On physical examination, the patient was in good general condition, hydrated and regular respiration at rest [blood pressure (BP) =120/80 mmHg; heart rate (HR) =90 bpm; respiratory rate (RR) =16 rpm]...
January 2018: Journal of Thoracic Disease
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