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https://www.readbyqxmd.com/read/28919003/inter-observer-agreement-in-gtv-delineation-of-bone-metastases-on-ct-and-impact-of-mr-imaging-a-multicenter-study
#1
A S Gerlich, J M van der Velden, A N T J Kotte, C L Tseng, G Fanetti, W S C Eppinga, N Kasperts, M P W Intven, F A Pameijer, M E P Philippens, H M Verkooijen, E Seravalli
BACKGROUND AND PURPOSE: The use of Stereotactic Body Radiotherapy (SBRT) for bone metastases is increasing rapidly. Therefore, knowledge of the inter-observer differences in tumor volume delineation is essential to guarantee precise dose delivery. The aim of this study is to compare inter-observer agreement in bone metastases delineated on different imaging modalities. MATERIAL AND METHODS: Twenty consecutive patients with bone metastases treated with SBRT were selected...
September 14, 2017: Radiotherapy and Oncology: Journal of the European Society for Therapeutic Radiology and Oncology
https://www.readbyqxmd.com/read/28913731/inter-and-intra-observer-reproducibility-of-quantitative-analysis-for-fp-cit-spect-in-patients-with-dlb
#2
Atsutaka Okizaki, Michihiro Nakayama, Kaori Nakajima, Takayuki Katayama, Takahiro Uno, Fumiyoshi Morikawa, Juichiro Naoe, Koji Takahashi
BACKGROUND: Dopamine transporter single photon emission CT (DAT-SPECT) is useful in the evaluation of dementia with Lewy bodies (DLB). The specific binding ratio (SBR) is an index to measure DAT density. However, poorly reproducible cases are occasionally experienced in clinical practice. We hypothesized that distance-weighted histogram (DWH) may be useful to improve the reproducibility of SBR. The purpose of this study was to investigate inter- and intra-observer reproducibility of SBR with conventional and DWH methods, and to visually evaluate the precision in reference voxel of interest (VOI) definition using these methods...
September 14, 2017: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/28913157/non-functioning-gastroenteropancreatic-gep-tumors-a-111-in-pentetreotide-spect-ct-diagnostic-study
#3
Angela Spanu, Orazio Schillaci, Bastiana Piras, Diego F Calvisi, Antonio Falchi, Roberta Danieli, Susanna Nuvoli, Franca Dore, Giuseppe Madeddu
In a retrospective study performed in non-functioning GEP tumor patients we further investigated (111)In-Pentetreotide SPECT/CT usefulness in diagnosis, staging and follow-up also evaluating whether the procedure may give more information than conventional imaging procedures (CIP), such as CT, MRI, US. We enrolled 104 consecutive patients with non-functioning GEP tumors, 30 in initial diagnosis and staging phases (IDS) and 74 in follow-up (FU). All patients underwent somatostatin receptor scintigraphy (SRS) whole body scan at 4, 24 and, if necessary, 48 hours followed by abdominal and chest SPECT/CT after (111)In-Pentetreotide 148-222 MBq i...
2017: American Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28903010/effect-of-loading-on-in-vivo-tibiofemoral-and-patellofemoral-kinematics-of-healthy-and-acl-reconstructed-knees
#4
Jarred M Kaiser, Michael F Vignos, Richard Kijowski, Geoffrey Baer, Darryl G Thelen
BACKGROUND: Although knees that have undergone anterior cruciate ligament reconstruction (ACLR) often exhibit normal laxity on clinical examination, abnormal kinematic patterns have been observed when the joint is dynamically loaded during whole body activity. This study investigated whether abnormal knee kinematics arise with loading under isolated dynamic movements. HYPOTHESIS: Tibiofemoral and patellofemoral kinematics of ACLR knees will be similar to those of the contralateral uninjured control knee during passive flexion-extension, with bilateral differences emerging when an inertial load is applied...
September 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28898318/-chronic-recurrent-multifocal-osteomyelitis-in-a-pediatric-patient-a-case-report
#5
Catalina Mesa Muñoz, Sara Elena Cardona Correa, Carlos Garcés Samudio, Jaime Toro Uribe
INTRODUCTION: Chronic recurrent multifocal osteomyelitis (CRMO) is a very rare disease, of unknown origin that affects primarily the metaphysis of long bones. It is characterized by an insidious onset of symptoms and multiple remissions. The chronicity of symptoms, the diagnostic imaging and the lack of response to first line antibiotic treatment, should be helpful for diagnostic. OBJECTIVE: Present a clinical case, based on clinical, laboratory, radiologic imaging and histopathological results, that ultimately led to the diagnostic of CRMO...
2017: Revista Chilena de Pediatría
https://www.readbyqxmd.com/read/28894899/clinical-impact-of-psma-based-18-f-dcfbc-pet-ct-imaging-in-patients-with-biochemically-recurrent-prostate-cancer-after-primary-local-therapy
#6
Esther Mena, Maria L Lindenberg, Joanna H Shih, Stephen Adler, Stephanie Harmon, Ethan Bergvall, Deborah Citrin, William Dahut, Anita T Ton, Yolanda McKinney, Juanita Weaver, Philip Eclarinal, Alicia Forest, George Afari, Sibaprasad Bhattacharyya, Ronnie C Mease, Maria J Merino, Peter Pinto, Bradford J Wood, Paula Jacobs, Martin G Pomper, Peter L Choyke, Baris Turkbey
PURPOSE: The purpose of our study was to assess (18)F-DCFBC PET/CT, a PSMA targeted PET agent, for lesion detection and clinical management of biochemical relapse in prostate cancer patients after primary treatment. METHODS: This is a prospective IRB-approved study of 68 patients with documented biochemical recurrence after primary local therapy consisting of radical prostatectomy (n = 50), post radiation therapy (n = 9) or both (n = 9), with negative conventional imaging...
September 11, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28894290/association-of-proton-density-fat-fraction-in-adipose-tissue-with-imaging-based-and-anthropometric-obesity-markers-in-adults
#7
D Franz, D Weidlich, F Freitag, C Holzapfel, T Drabsch, T Baum, H Eggers, A Witte, E J Rummeny, H Hauner, D C Karampinos
BACKGROUND/OBJECTIVES: The purpose of this study was to examine the relationship of the proton density fat fraction (PDFF), measured by magnetic resonance imaging (MRI), of supraclavicular and gluteal adipose tissue with subcutaneous and visceral adipose tissue (SAT and VAT) volumes, liver fat fraction and anthropometric obesity markers. The supraclavicular fossa was selected as a typical location where brown adipocytes may be present in humans and the gluteal region was selected as a typical location enclosing primarily white adipocytes...
August 14, 2017: International Journal of Obesity: Journal of the International Association for the Study of Obesity
https://www.readbyqxmd.com/read/28892996/pelvic-mass-lesions-in-females-tissue-characterization-capability-of-mri
#8
Pramod Ramchand Shaha, Rahul Khetawat, Kulamani Sahoo, Ashish Garg, Mohd Abbas Ilyas, Gaurav Khairnar, Sahil Garg, Shree Hari Budgemwar
INTRODUCTION: Magnetic Resonance Imaging (MRI) of adult female pelvis is a well-established tool in the evaluation of utero-ovarian lesions and is often used to supplement ultrasonography. The need for diagnostic surgical intervention has largely been eclipsed with the advent of MRI, which has become the imaging modality of choice for characterization of pelvic masses. AIM: To assess the role of MRI in female pelvic mass lesions and to exploit the tissue characterization capability of MRI...
July 2017: Journal of Clinical and Diagnostic Research: JCDR
https://www.readbyqxmd.com/read/28884957/long-term-sequelae-of-hippocampal-lesions-in-patients-with-transient-global-amnesia-a-multiparametric-mri-study
#9
Xiaochuan Wang, Ran Zhang, Wenping Wei, Haibo Jiang, Zhongming Gao, Jianzhong Lin, Jiaxing Zhang
BACKGROUND: MRI signal diffusion-weighted imaging (DWI) hyperintensity in the hippocampus in patients with transient global amnesia (TGA) are resolved within several days after the onset of TGA. PURPOSE: To use multiparametric MRI to unravel the sequelae of TGA. STUDY TYPE: A prospective longitudinal study. POPULATION: Eight TGA patients. FIELD STRENGTH/SEQUENCE: A 3.0T Siemens Tim Trio MRI scanner with T1 -weighted MPRAGE, diffusion-weighted echo planar imaging, and multiecho gradient-recalled echo sequences...
September 7, 2017: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/28882915/patient-experience-and-perceived-acceptability-of-whole-body-magnetic-resonance-imaging-for-staging-colorectal-and-lung-cancer-compared-with-current-staging-scans-a-qualitative-study
#10
Ruth Evans, Stuart Taylor, Sam Janes, Steve Halligan, Alison Morton, Neal Navani, Alf Oliver, Andrea Rockall, Jonathan Teague, Anne Miles
OBJECTIVE: To describe the experience and acceptability of whole-body magnetic resonance imaging (WB-MRI) staging compared with standard scans among patients with highly suspected or known colorectal or lung cancer. DESIGN: Qualitative study using one-to-one interviews with thematic analysis. SETTING: Patients recruited from 10 hospitals in London, East and South East England between March 2013 and July 2014. PARTICIPANTS: 51 patients (31 male, age range 40-89 years), with varying levels of social deprivation, were recruited consecutively from two parallel clinical trials comparing the diagnostic accuracy and cost-effectiveness of WB-MRI with standard scans for staging colorectal and lung cancer ('Streamline-C' and 'Streamline-L')...
September 6, 2017: BMJ Open
https://www.readbyqxmd.com/read/28880381/evaluation-of-feasibility-of-1-5-tesla-prostate-mri-using-body-coil-rf-transmit-in-a-patient-with-an-implanted-vagus-nerve-stimulator
#11
Christopher P Favazza, Heidi A Edmonson, Chi Ma, Yunhong Shu, Joel P Felmlee, Robert E Watson, Krzysztof R Gorny
PURPOSE: To assess risks of RF-heating of a vagus nerve stimulator (VNS) during 1.5T prostate MRI using body coil transmit and to compare these risks with those associated with MRI head exams using a transmit/receive head coil. METHODS: Spatial distributions of radio-frequency (RF) B1 fields generated by transmit/receive (T/R) body and head coils were empirically assessed along the long axis of a 1.5 T MRI scanner bore. Measurements were obtained along the center axis of the scanner and laterally offset by 15 cm (body coil) and 7 cm (head coil)...
September 7, 2017: Medical Physics
https://www.readbyqxmd.com/read/28870056/-application-of-autologous-fat-grafting-in-breast-reconstruction
#12
L Cai, X F Han, B Q Wang, F C Li
Objective: To observe the outcome of breast reconstruction with autologous fat grafting in the patients following treatment for breast cancer. Methods: The clinical data of 22 patients after breast cancer modified radical mastectomy with fat grafting for breast reconstruction from January 2012 to March 2015 at Department of Body Contouring and Liposuction Center of Plastic Surgery, Hospital of Peking Union Medical College were analyzed retrospectively. The age of 22 patients (all female) was 28 to 54 years...
September 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28869944/evidence-for-concerted-and-mosaic-brain-evolution-in-dragon-lizards
#13
Daniel Hoops, Marta Vidal-García, Jeremy F P Ullmann, Andrew L Janke, Timothy Stait-Gardner, David A Duchêne, William S Price, Martin J Whiting, J Scott Keogh
The brain plays a critical role in a wide variety of functions including behaviour, perception, motor control, and homeostatic maintenance. Each function can undergo different selective pressures over the course of evolution, and as selection acts on the outputs of brain function, it necessarily alters the structure of the brain. Two models have been proposed to explain the evolutionary patterns observed in brain morphology. The concerted brain evolution model posits that the brain evolves as a single unit and the evolution of different brain regions are coordinated...
September 5, 2017: Brain, Behavior and Evolution
https://www.readbyqxmd.com/read/28868185/t2-vertebrectomy-with-combined-anterior-and-posterior-arthrodesis-for-treatment-of-a-solitary-plasmacytoma
#14
Gordon Preston, Toomas Anton
BACKGROUND: Plasma cell neoplasmas are a heterogenous group of neoplastic tumor lesions occurring secondary to disordered proliferation of cells from a monocyte lineage. Plasmacytoma is a rare lesion that accounts for 5% of all plasma cell neoplasms. The current recommended treatment for solitary plasmacytoma is moderate dose radiation therapy. For patients who are suffering from axial back pain, spinal instability, radiculopathy, or bowel/bladder dysfunction secondary to spinal cord compression, surgical intervention with spinal decompression and stabilization can be used as an adjuvant to radiation therapy...
2017: Surgical Neurology International
https://www.readbyqxmd.com/read/28866897/superior-target-delineation-for-stereotactic-body-radiotherapy-of-bone-metastases-from-renal-cell-carcinoma-on-mri-compared-to-ct
#15
Fieke M Prins, Joanne M van der Velden, Anne S Gerlich, Alexis N T J Kotte, Wietse S C Eppinga, Nicolien Kasperts, Jorrit J Verlaan, Frank A Pameijer, Linda G W Kerkmeijer
BACKGROUND: In metastatic renal cell carcinoma (mRCC) there has been a treatment shift towards targeted therapy, which has resulted in improved overall survival. Therefore, there is a need for better local control of the tumor and its metastases. Image-guided stereotactic body radiotherapy (SBRT) in bone metastases provides improved symptom palliation and local control. With the use of SBRT there is a need for accurate target delineation. The hypothesis is that MRI allows for better visualization of the extend of bone metastases in mRCC and will optimize the accuracy of tumor delineation for stereotactic radiotherapy purposes, compared with CT only...
July 11, 2017: Annals of Palliative Medicine
https://www.readbyqxmd.com/read/28864351/adaptation-of-a-mr-imaging-protocol-into-a-real-time-clinical-biometric-ultrasound-protocol-for-persons-with-spinal-cord-injury-at-risk-for-deep-tissue-injury-a-reliability-study
#16
Jillian M Swaine, Andrew Moe, William Breidahl, Daniel L Bader, Cees W J Oomens, Leanne Lester, Edmond O'Loughlin, Nick Santamaria, Michael C Stacey
BACKGROUND: High strain in soft tissues that overly bony prominences are considered a risk factor for pressure ulcers (PUs) following spinal cord impairment (SCI) and have been computed using Finite Element methods (FEM). The aim of this study was to translate a MRI protocol into ultrasound (US) and determine between-operator reliability of expert sonographers measuring diameter of the inferior curvature of the ischial tuberosity (IT) and the thickness of the overlying soft tissue layers on able-bodied (AB) and SCI using real-time ultrasound...
August 1, 2017: Journal of Tissue Viability
https://www.readbyqxmd.com/read/28863414/influence-of-age-bmi-gender-and-lumbar-level-on-t1%C3%AF-magnetic-resonance-imaging-of-lumbar-discs-in-healthy-asymptomatic-adults
#17
Raphael Gübitz, Tobias Lange, Georg Gosheger, Walter Heindel, Thomas Allkemper, Christoph Stehling, Joachim Gerss, Christian Kanthak, Tobias L Schulte
Purpose To assess the T1ρ range of lumbar intervertebral discs in healthy asymptomatic individuals at 1.5 T and to investigate the influence of age, body mass index (BMI), gender, and lumbar level on T1ρ relaxation. Materials and Methods In a prospective study, a total of 81 volunteers aged 20 - 80 years were included in this study and divided into three age groups (A: 20 - 39y; B: 40 - 59y; C: 60 - 80y). All of the volunteers underwent magnetic resonance imaging (MRI) at 1.5 T with acquisition of sagittal T1ρ images...
September 1, 2017: RöFo: Fortschritte Auf Dem Gebiete der Röntgenstrahlen und der Nuklearmedizin
https://www.readbyqxmd.com/read/28860169/creatine-methyl-d3-dilution-in-urine-for-estimation-of-total-body-skeletal-muscle-mass-accuracy-and-variability-vs-mri-and-dxa
#18
Richard V Clark, Ann C Walker, Ram R Miller, Robin L O'Connor Semmes, Eric Ravussin, William T Cefalu
A noninvasive method to estimate muscle mass based on creatine (methyl-d3) dilution (D3-creatine) using fasting morning urine was evaluated for accuracy and variability over a 3-4 mo period. Healthy older (67-80 y) subjects (n=14) with muscle wasting secondary to aging and 4 patients with chronic disease (58-76 y) fasted overnight, then received an oral 30-mg dose of D3-creatine at 8 am (day 1). Urine was collected during 4 h of continued fast then at consecutive 4-8-h intervals through day 5. Repeat assessment was performed 3-4 mo later in 13 healthy subjects and 1 patient with congestive heart failure...
August 31, 2017: Journal of Applied Physiology
https://www.readbyqxmd.com/read/28858871/unilateral-upper-lung-field-pulmonary-fibrosis-radiologically-consistent-with-pleuroparenchymal-fibroelastosis-after-thoracotomy-a-new-disease-entity-related-to-thoracotomy
#19
Akimasa Sekine, Hiroaki Satoh, Tae Iwasawa, Kentaro Matsui, Eriko Ikeya, Satoshi Ikeda, Hideaki Yamakawa, Ryo Okuda, Hideya Kitamura, Takeshi Shinohara, Tomohisa Baba, Shigeru Komatsu, Terufumi Kato, Eri Hagiwara, Takashi Ogura
BACKGROUND: Pleuroparenchymal fibroelastosis (PPFE) is a rare bilateral idiopathic interstitial pneumonia defined by pleural-parenchymal involvement. In clinical practice, we encountered patients with upper lung field pulmonary fibrosis (Upper-PF), which was radiologically consistent with PPFE, but apparently limited to the unilateral lung. OBJECTIVES: The purpose of the study was to clarify the clinical characteristics in those patients. METHODS: We examined the medical records of all the consecutive patients from 2012 to 2016 to see whether there were patients having unilateral Upper-PF...
September 1, 2017: Respiration; International Review of Thoracic Diseases
https://www.readbyqxmd.com/read/28855470/technical-aspects-of-contrast-enhanced-mr-angiography-current-status-and-new-applications
#20
Stephen J Riederer, Eric G Stinson, Paul T Weavers
This article is based on a presentation at the meeting of the Japanese Society of Magnetic Resonance in Medicine in September 2016. The purpose is to review the technical developments which have contributed to the current status of contrast-enhanced magnetic resonance angiography (CE-MRA) and to indicate related emerging areas of study. Technical developments include magnetic resonance imaging (MRI) physics-based innovations as well as improvements in MRI engineering. These have collectively addressed not only early issues of timing and venous suppression but more importantly have led to an improvement in spatiotemporal resolution of CE-MRA of more than two orders of magnitude compared to early results...
August 31, 2017: Magnetic Resonance in Medical Sciences: MRMS
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