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https://www.readbyqxmd.com/read/29454148/-68-ga-galmydar-biodistribution-and-radiation-dosimetry-studies-in-rodents
#1
Jothilingam Sivapackiam, Richard Laforest, Vijay Sharma
INTRODUCTION: 68 Ga-Galmydar is an avid transport substrate of ABCB1 (P-Glycoprotein; 170kDa plasma membrane protein), breast cancer resistance protein (BCRP; ABCG2; 72kDa), penetrates human epidermal carcinoma (KB3-1), breast cancer (MCF7), embryonic kidney (HEK 293) tumor cells and rat cardiomyoblasts, and localizes within the mitochondria of tumor and myocardium cells. 68 Ga-Galmydar excretes from blood pool quickly, and shows stable retention within rat myocardium in vivo for extended periods, therefore, the agent shows potential to enable myocardial perfusion imaging...
December 1, 2017: Nuclear Medicine and Biology
https://www.readbyqxmd.com/read/29454122/rope-jumping-induced-traumatic-compression-fractures-the-underestimated-danger-of-repetitive-axial-load-forces
#2
Tobias A Mattei
The author describes a case of a non-osteoporotic adult presenting with multilevel compression fractures at the apex of the thoracic kyphosis after strenuous rope jumping. MRI demonstrated diffuse bone marrow changes in the vertebral bodies with only a very small unilateral endplate fracture. Besides highlighting the oftentimes neglected role of repetitive sub-pathological axial load forces in traumatic spinal injuries, the observed imaging pattern substantiates previous experimental studies which demonstrated that under cyclic axial loading the initial damage occurs in the cancellous regions of the bone (with observation of microscopic/50-100 μM long cracks), ultimately leading to a reduction in its elastic modulus...
February 14, 2018: World Neurosurgery
https://www.readbyqxmd.com/read/29453847/fiber-bundle-endomicroscopy-with-multi-illumination-for-three-dimensional-reflectance-image-reconstruction
#3
Yoriko Ando, Hirohito Sawahata, Takeshi Kawano, Kowa Koida, Rika Numano
Bundled fiber optics allow in vivo imaging at deep sites in a body. The intrinsic optical contrast detects detailed structures in blood vessels and organs. We developed a bundled-fiber-coupled endomicroscope, enabling stereoscopic three-dimensional (3-D) reflectance imaging with a multipositional illumination scheme. Two illumination sites were attached to obtain reflectance images with left and right illumination. Depth was estimated by the horizontal disparity between the two images under alternative illuminations and was calibrated by the targets with known depths...
February 2018: Journal of Biomedical Optics
https://www.readbyqxmd.com/read/29453681/-18-f-fpybf-2-a-new-f-18-labelled-amyloid-imaging-pet-tracer-biodistribution-and-radiation-dosimetry-assessment-of-first-in-man-18-f-fpybf-2-pet-imaging
#4
Ryuichi Nishii, Tatsuya Higashi, Shinya Kagawa, Chio Okuyama, Yoshihiko Kishibe, Masaaki Takahashi, Tomoko Okina, Norio Suzuki, Hiroshi Hasegawa, Yasuhiro Nagahama, Koichi Ishizu, Naoya Oishi, Hiroyuki Kimura, Hiroyuki Watanabe, Masahiro Ono, Hideo Saji, Hiroshi Yamauchi
OBJECTIVE: Recently, a benzofuran derivative for the imaging of β-amyloid plaques, 5-(5-(2-(2-(2- 18 F-fluoroethoxy)ethoxy)ethoxy)benzofuran-2-yl)- N-methylpyridin-2-amine ( 18 F-FPYBF-2) has been validated as a tracer for amyloid imaging and it was found that 18 F-FPYBF-2 PET/CT is a useful and reliable diagnostic tool for the evaluation of AD (Higashi et al. Ann Nucl Med, https://doi.org/10.1007/s12149-018-1236-1 , 2018). The aim of this study was to assess the biodistribution and radiation dosimetry of diagnostic dosages of 18 F-FPYBF-2 in normal healthy volunteers as a first-in-man study...
February 16, 2018: Annals of Nuclear Medicine
https://www.readbyqxmd.com/read/29453442/white-matter-integrity-in-medication-free-women-with-peripartum-depression-a-tract-based-spatial-statistics-study
#5
Michelle Silver, Constance M Moore, Vanessa Villamarin, Nina Jaitly, Janet E Hall, Anthony J Rothschild, Kristina M Deligiannidis
Diffusion tensor imaging (DTI) studies in depression show decreased structural connectivity in the left anterior limb of the internal capsule and the genu of the corpus callosum but no such studies exist in peripartum depression (PPD), which affects 1 in 8 women. We analyzed fractional anisotropy (FA) as a measure of white matter integrity of these two tracts using tract-based spatial statistics (TBSS). We then conducted an exploratory whole-brain analysis to identify additional regions implicated in PPD. Seventy-five pregnant, medication-free women were evaluated with the Edinburgh Postnatal Depression Scale (EPDS) and Structured Clinical Interview (SCID) for DSM-IV-TR in pregnancy and in the postpartum...
February 5, 2018: Neuropsychopharmacology: Official Publication of the American College of Neuropsychopharmacology
https://www.readbyqxmd.com/read/29453242/single-subject-spm-fdg-pet-patterns-predict-risk-of-dementia-progression-in-parkinson-disease
#6
Andrea Pilotto, Enrico Premi, Silvia Paola Caminiti, Luca Presotto, Rosanna Turrone, Antonella Alberici, Barbara Paghera, Barbara Borroni, Alessandro Padovani, Daniela Perani
OBJECTIVE: To evaluate the statistical parametric mapping (SPM) procedure for fluorodeoxyglucose (FDG)-PET imaging as a possible single-subject marker of progression to dementia in Parkinson disease (PD). METHODS: Fifty-four consecutive patients with PD without dementia (age at onset of 59.9 ± 10.1 years, disease duration of 5.3 ± 3.4 years) entered the study. The patients underwent an extensive motor and cognitive assessment and a single-subject FDG-PET SPM evaluation at baseline...
February 16, 2018: Neurology
https://www.readbyqxmd.com/read/29453156/approaching-the-experience-of-people-through-the-process-of-a-colostomy
#7
Raquel Palomero-Rubio, Azucena Pedraz-Marcos, Ana María Palmar-Santos
OBJECTIVE: The purpose of this paper is to explore the experience of people who go through the process of a colostomy. METHOD: Methodological approach of qualitative type and with a phenomenological framework, through in-depth interviews. Six women and 12 men, between 38 and 86 years of age, were interviewed before and after surgery, between 3 and 6 months after the intervention. The discourses were recorded and transcribed verbatim and analyzed following the 3 stages of Taylor and Bogdan: finding in progress, data coding and refinement of the understanding of the subject of study, and relativisation of the findings...
February 13, 2018: Enfermería Clínica
https://www.readbyqxmd.com/read/29452999/chylothorax-as-a-risk-factor-for-thrombosis-in-adults-a-proof-of-concept-study
#8
Sumedh S Hoskote, Hemang Yadav, Prashant Jagtap, Dennis A Wigle, Craig E Daniels
BACKGROUND: Postoperative chylothorax in children is associated with an increased risk of vascular thrombosis, hypothesized to be from loss of antithrombin into chylous fluid resulting in a hypercoagulable state. In adults, an increased thrombotic risk with chylothorax has not been described. Adults undergoing Ivor-Lewis esophagogastrectomy have two strong thrombotic risk factors-active malignancy and postoperative state-allowing for relative homogeneity in baseline thrombotic risk; therefore, we studied the association of chylothorax with thrombosis in this population...
February 13, 2018: Annals of Thoracic Surgery
https://www.readbyqxmd.com/read/29452881/tenosynovial-chondromatosis-of-the-wrist-presenting-with-acute-carpal-tunnel-syndrome-a-case-report
#9
L K Head, R Bradley, M Momtazi
We report a case of synovial chondromatosis of the wrist that manifested as acute carpal tunnel syndrome. The patient successfully underwent carpal tunnel release, tenosynovectomy and resection of dorsal and volar ossified bodies embedded in the tenosynovium overlying the wrist. Final histopathology confirmed the diagnosis of synovial chondromatosis. The patient's symptoms of pain, numbness, and paresthesia in a median nerve distribution resolved completely and the patient resumed full-time work in the service industry 4-weeks postoperatively with no functional limitations...
February 13, 2018: Hand Surgery and Rehabilitation
https://www.readbyqxmd.com/read/29452617/imaging-of-spondylodiscitis
#10
REVIEW
Meera Raghavan, Elena Lazzeri, Christopher J Palestro
Spondylodiscitis is an infection of the vertebral body or disc and may also involve the epidural space, posterior elements, and paraspinal soft tissues. It is a cause of morbidity and mortality, and warrants early diagnosis and prompt treatment. Diagnosis can be difficult because of nonspecific signs and symptoms. Magnetic resonance imaging is sensitive and specific and is the imaging modality of choice for spondylodiscitis. Gadolinium contrast can show the extent of soft tissue and bone phlegmon and abscess...
March 2018: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/29452616/tuberculosis
#11
REVIEW
Alfred O Ankrah, Andor W J M Glaudemans, Alex Maes, Christophe Van de Wiele, Rudi A J O Dierckx, Mariza Vorster, Mike M Sathekge
Tuberculosis (TB) is currently the world's leading cause of infectious mortality. Imaging plays an important role in the management of this disease. The complex immune response of the human body to Mycobacterium tuberculosis results in a wide array of clinical manifestations, making clinical and radiological diagnosis challenging. 18 F-FDG-PET/CT is very sensitive in the early detection of TB in most parts of the body; however, the lack of specificity is a major limitation. 18 F-FDG-PET/CT images the whole body and provides a pre-therapeutic metabolic map of the infection, enabling clinicians to accurately assess the burden of disease...
March 2018: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/29451665/mirror-therapy-a-potential-intervention-for-pain-management
#12
Priscilla G Wittkopf, Mark I Johnson
The consequences of chronic pain and associated disabilities to the patient and to the health care system are well known. Medication is often the first treatment of choice for chronic pain, although side effects and high costs restrict long-term use. Inexpensive, safe and easy to self-administer non-pharmacological therapies, such as mirror therapy, are recommended as adjuncts to pain treatment. The purpose of this review is to describe the principles of use of mirror therapy so it can be incorporated into a health care delivery...
November 2017: Revista da Associação Médica Brasileira
https://www.readbyqxmd.com/read/29451435/safe-insertion-of-s-2-alar-iliac-screws-radiological-comparison-between-2-insertion-points-using-computed-tomography-and-3d-analysis-software
#13
Kentaro Yamada, Yuichiro Abe, Shigenobu Satoh
OBJECTIVE S-2 alar iliac (S2AI) screws are commonly used as anchors for lumbosacral fixation. A serious potential complication of screw insertion is major vascular injury due to anterior or caudal screw deviation. To avoid screw deviation, the pelvic inlet view on intraoperative fluoroscopy images is recommended. However, there has been no detailed investigation of optimal fluoroscopic incline with the pelvic inlet view. The purpose of this study was to investigate the safety margins and to optimize fluoroscopic settings to avoid screw deviation with 2 reported insertion techniques using 3D analysis software and CT...
February 16, 2018: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/29451416/refinement-of-in-vivo-optical-imaging-development-of-a-real-time-respiration-monitoring-system
#14
Ana L Gomes, Stuart Gilchrist, Veerle Kersemans, Marcus Westcott, Sean Smart
In vivo optical imaging enables detection and quantification of light-emitting compounds from the whole body in small animals such as the mouse, but it typically requires the use of anaesthetics for subject immobilisation due to long exposure times. Excessively deep anaesthesia can result in unacceptably compromised physiology, whilst excessively light anaesthesia can result in animals waking up. Here we report a respiratory monitoring setup for an in vivo bioluminescence and fluorescence imaging device which simultaneously allows real-time adaptive control of anaesthesia depth in multiple animals to (i) potentially increase the consistency between animals, (ii) ensure animals are maintained within minimally intrusive, adequate anaesthetic plane and (iii) provide a valuable refinement strategy for a common challenge within animal-based research...
January 1, 2018: Laboratory Animals
https://www.readbyqxmd.com/read/29450961/volumetric-based-image-guidance-is-superior-to-marker-based-alignments-for-stereotactic-body-radiotherapy-of-prostate-cancer
#15
Wen Li, Lan Lu, Kevin L Stephans, Naveen Sharma, Andrew Vassil, Zhilei Liu Shen, Abigail Stockham, Toufik Djemil, Rahul D Tendulkar, Ping Xia
PURPOSES: The aim of this study was to evaluate a dual marker-based and soft-tissue based image guidance for inter-fractional corrections in stereotactic body radiotherapy (SBRT) of prostate cancer. METHODS/MATERIALS: We reviewed 18 patients treated with SBRT for prostate cancer. An endorectal balloon was inserted at simulation and each treatment. Planning margins were 3 mm/0 mm posteriorly. Prior to each treatment, a dual image guidance protocol was applied to align three makers using stereoscopic x ray images and then to the soft tissue using kilo-voltage cone beam CT (kV-CBCT)...
February 15, 2018: Journal of Applied Clinical Medical Physics
https://www.readbyqxmd.com/read/29450805/ph-responsive-cap-co-poly-methacrylic-acid-based-hydrogel-as-an-efficient-platform-for-controlled-gastrointestinal-delivery-fabrication-characterization-in-vitro-and-in-vivo-toxicity-evaluation
#16
Syed Ahmed Shah, Muhammad Sohail, Muhammad Usman Minhas, Nisar-Ur-Rehman, Shahzeb Khan, Zahid Hussain, Mudassir, Arshad Mahmood, Mubeen Kousar, Asif Mahmood
Cellulose acetate phthalate-based pH-responsive hydrogel was synthesized for fabrication of polymeric matrix tablets for gastro-protective delivery of loxoprofen sodium. Cellulose acetate phthalate (CAP) was cross-linked with methacrylic acid (MAA) using free radical polymerization technique. Fourier transform infrared (FTIR) spectra confirmed the formation of cross-linked structure of CAP-co-poly(methacrylic acid). Thermogravimetric analysis (TGA) and differential scanning calorimetry (DSC) confirmed the thermal stability of polymeric networks, and scanning electron microscopy (SEM) and energy-dispersive X-ray spectrum (EDS) images unveiled that the prepared formulations were porous in nature and thus the developed formulations had shown better diffusibility...
February 15, 2018: Drug Delivery and Translational Research
https://www.readbyqxmd.com/read/29450802/mhi-148-cyanine-dye-conjugated-chitosan-nanomicelle-with-nir-light-trigger-release-property-as-cancer-targeting-theranostic-agent
#17
Reju George Thomas, Myeong Ju Moon, Suchithra Poilil Surendran, Hyeong Ju Park, In-Kyu Park, Byeong-Il Lee, Yong Yeon Jeong
PURPOSE: Paclitaxel (PTX) loaded hydrophobically modified glycol chitosan (HGC) micelle is biocompatible in nature, but it requires cancer targeting ability and stimuli release property for better efficiency. To improve tumor retention and drug release characteristic of HGC-PTX nanomicelles, we conjugated cancer targeting heptamethine dye, MHI-148, which acts as an optical imaging agent, targeting moiety and also trigger on-demand drug release on application of NIR 808 nm laser. PROCEDURES: The amine group of glycol chitosan modified with hydrophobic 5β-cholanic acid and the carboxyl group of MHI-148 were bonded by 1-ethyl-3-(3-dimethylaminopropyl)carbodiimide/N-hydroxysuccinimide chemistry...
February 15, 2018: Molecular Imaging and Biology: MIB: the Official Publication of the Academy of Molecular Imaging
https://www.readbyqxmd.com/read/29449731/mixed-malignant-mullerian-tumor-with-neuroendocrine-features-in-an-irradiated-uterus-for-cervical-carcinoma-a-unique-association-a-morphological-immunohistochemisty-and-ultrastructural-study
#18
V G Vellone, B Spina, F Grillo, P Calamaro, F Sarocchi, P Sala, S Ferrero, E Fulcheri
Chemo-radiation represents an effective therapy for carcinoma of the uterine cervix. The endometrium may however receive a consistent dose of mutagenic radiations and patients may have an increased risk of secondary malignancies. Endometrial mixed malignant mullerian tumor (MMMT) is a rare, highly aggressive disease, and neuroendocrine features are even rarer. A 68 years old woman underwent radio-chemotherapy for a squamous cell carcinoma of the cervix. Follow up was uneventful until, eight years after radio-chemotherapy, imaging exams detected a diffuse enlargement of the uterine body...
December 2017: Pathologica
https://www.readbyqxmd.com/read/29449506/whole-body-magnetic-resonance-imaging-in-axial-spondyloarthritis-reduction-of-sacroiliac-spinal-and-entheseal-inflammation-in-a-placebo-controlled-trial-of-adalimumab
#19
Simon Krabbe, Mikkel Østergaard, Iris Eshed, Inge J Sørensen, Bente Jensen, Jakob M Møller, Lone Balding, Ole R Madsen, Karsten Asmussen, Grith Eng, Niklas R Jørgensen, Susanne J Pedersen
OBJECTIVE: To investigate whether adalimumab (ADA) reduces whole-body (WB-) magnetic resonance imaging (MRI) indices for inflammation in the entheses, peripheral joints, sacroiliac joints, spine, and the entire body in patients with axial spondyloarthritis (axSpA). METHODS: An investigator-initiated, randomized, placebo-controlled, double-blinded 48-week followup trial included 49 patients with axSpA, who had Bath Ankylosing Spondylitis Disease Activity Index (BASDAI) ≥ 4...
February 15, 2018: Journal of Rheumatology
https://www.readbyqxmd.com/read/29449445/evaluation-of-penalized-likelihood-estimation-reconstruction-on-a-digital-time-of-flight-pet-ct-scanner-for-18-f-fdg-whole-body-examinations
#20
Elin Lindström, Anders Sundin, Carlos Trampal, Lars Lindsjö, Ezgi Ilan, Torsten Danfors, Gunnar Antoni, Jens Sörensen, Mark Lubberink
Resolution and quantitative accuracy of positron emission tomography (PET) are highly influenced by the reconstruction method. Penalized likelihood estimation algorithms allow for fully convergent iterative reconstruction, generating a higher image contrast while limiting noise compared to ordered subsets expectation maximization (OSEM). In this study, block-sequential regularized expectation maximization (BSREM) was compared to time-of-flight OSEM (TOF-OSEM). Various strengths of noise penalization factor β were tested along with scan durations and transaxial field of views (FOVs) with the aim to evaluate the performance and clinical use of BSREM for 18 F-FDG-PET-computed tomography (CT), both in quantitative terms and in a qualitative visual evaluation...
February 15, 2018: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
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