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Pelvic MRI

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https://www.readbyqxmd.com/read/28328579/resting-state-functional-connectivity-predicts-longitudinal-pain-symptom-change-in-urologic-chronic-pelvic-pain-syndrome-a-mapp-network-study
#1
Jason J Kutch, Jennifer S Labus, Richard E Harris, Katherine T Martucci, Melissa A Farmer, Sonja Fenske, Connor Fling, Eric Ichesco, Scott Peltier, Bogdan Petre, Wensheng Guo, Xiaoling Hou, Alisa J Stephens, Chris Mullins, Daniel J Clauw, Sean C Mackey, A Vania Apkarian, J Richard Landis, Emeran A Mayer
Chronic pain symptoms often change over time, even in individuals who have had symptoms for years. Studying biological factors that predict trends in symptom change in chronic pain may uncover novel pathophysiological mechanisms and potential therapeutic targets. In this study, we investigated whether brain functional connectivity measures obtained from resting-state functional MRI (rs-fMRI) at baseline can predict longitudinal symptom change (3, 6, and 12 months post-scan) in urologic chronic pelvic pain syndrome (UCPPS)...
March 17, 2017: Pain
https://www.readbyqxmd.com/read/28327166/arthroscopic-findings-of-a-diagnostic-dilemma-hip-pathology-with-normal-imaging
#2
Joel Glenn Buikstra, Camdon Fary, Phong Tran
BACKGROUND: Patients with groin, hip and pelvic pain but normal findings on MRI and minimal changes on x-ray can be a diagnostic problem. This paper looks at the arthroscopic findings of patients who have had hip pain and a positive response to an intra-articular anaesthetic but have non-contributory imaging. We hypothesized that standard MRI's were missing significant pathology and if there was a response to intra-articular local anaesthesia, pathology found during arthroscopy was likely...
March 21, 2017: BMC Musculoskeletal Disorders
https://www.readbyqxmd.com/read/28317247/establishing-the-pathways-and-indications-for-performing-isotope-bone-scans-in-newly-diagnosed-intermediate-risk-localised-prostate-cancer-results-from-a-large-contemporaneous-cohort
#3
Gokul Vignesh KandaSwamy, Adam Bennett, Krishna Narahari, Owen Hughes, John Rees, Howard Kynaston
OBJECTIVE: To establish the pattern of isotope bone scan (BS) positivity in a large contemporaneous cohort of newly diagnosed localised prostate cancer (PCa) patients and compare with the European Association of Urology (EAU) guidelines. BACKGROUND: Imaging guidelines and clinical practice of using BS to stage newly diagnosed patients with intermediate risk (IR) localised PCa are not uniform in the literature. PATIENTS AND METHODS: All newly diagnosed PCa patients were discussed in a specialist multidisciplinary team (sMDT) meeting and were prospectively entered in a database...
March 20, 2017: BJU International
https://www.readbyqxmd.com/read/28306550/female-pelvic-synthetic-ct-generation-based-on-joint-intensity-and-shape-analysis
#4
Lianli Liu, Shruti Jolly, Yue Cao, Karen Vineberg, Jeffrey A Fessler, James M Balter
Using MRI for radiotherapy treatment planning and image guidance is appealing as it provides superior soft tissue information over CT scans and avoids possible systematic errors introduced by aligning MR to CT images. This study presents a method that generates Synthetic CT (MRCT) volumes by performing probabilistic tissue classification of voxels from MRI data using a single imaging sequence (T1 Dixon). The intensity overlap between different tissues on MR images, a major challenge for voxel-based MRCT generation methods, is addressed by adding bone shape information to an intensity-based classification scheme...
March 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28303730/biomechanical-properties-of-the-pelvic-floor-muscles-of-continent-and-incontinent-women-using-an-inverse-finite-element-analysis
#5
M E T Silva, S Brandão, M P L Parente, T Mascarenhas, R M Natal Jorge
Pelvic disorders can be associated with changes in the biomechanical properties in the muscle, ligaments and/or connective tissue form fascia and ligaments. In this sense, the study of their mechanical behavior is important to understand the structure and function of these biological soft tissues. The aim of this study was to establish the biomechanical properties of the pelvic floor muscles of continent and incontinent women, using an inverse finite element analysis (FEA). The numerical models, including the pubovisceral muscle and pelvic bones were built from magnetic resonance (MR) images acquired at rest...
March 17, 2017: Computer Methods in Biomechanics and Biomedical Engineering
https://www.readbyqxmd.com/read/28291745/iterative-framework-for-the-joint-segmentation-and-ct-synthesis-of-mr-images-application-to-mri-only-radiotherapy-treatment-planning
#6
Ninon Burgos, Filipa Guerreiro, Jamie McClelland, Benoit Presles, Marc Modat, Simeon Nill, David Dearnaley, Nandita deSouza, Uwe Oelfke, Antje-Christin Knopf, Sebastien Ourselin, M Jorge Cardoso
To tackle the problem of MRI-only radiotherapy treatment planning (RTP), we propose a multi-atlas information propagation scheme that jointly segments organs and generates pseudo CT data from structural MR images. As the performance of the method strongly depends on the quality of the atlas database composed of multiple sets of aligned MR, CT and segmented images, we also propose a robust way of registering atlas MR and CT images, which combines structure-guided registration, and CT and MR image synthesis. We first evaluated the proposed framework in terms of segmentation and CT synthesis accuracy on 15 subjects with prostate cancer...
March 14, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28291401/pelvic-insufficiency-fracture-pif-incidence-in-patients-treated-with-intensity-modulated-radiation-therapy-imrt-for-gynaecological-or-anal-cancer-single-institution-experience-and-review-of-the-literature
#7
Louis Bazire, Haoping Xu, Jean-Philippe Foy, Malika Amessis, Caroline Malhaire, Kim Cao, Anne De La Rochefordiere, Youlia M Kirova
OBJECTIVE: To summarize the results of pelvic insufficiency fracture (PIF) incidence in patients with anal or gynaecological cancer treated by pelvic intensity-modulated radiation therapy (IMRT). METHODS: The clinical and morphological (CT and/or pelvic MRI) characteristics of patients treated by IMRT at our institution between 2007 and 2014 were analyzed. The global incidence of PIF after external beam radiotherapy and the impact of tumour site (gynaecological or anal cancer) were determined...
March 14, 2017: British Journal of Radiology
https://www.readbyqxmd.com/read/28290736/accuracy-and-reliability-of-marker-based-approaches-to-scale-the-pelvis-thigh-and-shank-segments-in-musculoskeletal-models
#8
Hans Kainz, Hoa Hoang, Chris Stockton, Roslyn R Boyd, David G Lloyd, Christopher P Carty
Gait analysis together with musculoskeletal modelling is widely used for research. In the absence of medical images, surface marker locations are used to scale a generic model to the individual's anthropometry. Studies evaluating the accuracy and reliability of different scaling approaches in a paediatric and/or clinical population have not yet been conducted and, therefore, formed the aim of this study. Magnetic resonance images (MRI) and motion capture data were collected from twelve participants with cerebral palsy and six typically developed participants...
March 14, 2017: Journal of Applied Biomechanics
https://www.readbyqxmd.com/read/28289934/anoperineal-disease-in-hidradenitis-suppurativa-mr-imaging-distinction-from-perianal-crohn-s-disease
#9
Louise Monnier, Anthony Dohan, Nedjoua Amara, Anne-Marie Zagdanski, Moustapha Drame, Philippe Soyer, Christine Hoeffel
OBJECTIVE: To determine whether Hidradenitis suppurativa (HS)-related anoperineal disease can be distinguished from Crohn's disease (CD) using MRI. METHODS: Pelvic MRI of 23 HS and 46 CD patients with anoperineal disease between 2007 and 2014 were independently analysed by two radiologists. For diagnosis of HS, sensitivity, specificity and positive likelihood ratios (LRs) of inflammatory features and of their anatomical distribution were calculated and compared to those of CD...
March 13, 2017: European Radiology
https://www.readbyqxmd.com/read/28284723/prevalence-of-surgical-repair-for-athletic-pubalgia-and-impact-on-performance-in-football-athletes-participating-in-the-national-football-league-combine
#10
Derrick M Knapik, Jeremy J Gebhart, Shane J Nho, Joseph E Tanenbaum, James E Voos, Michael J Salata
PURPOSE: To examine the prevalence and impact of athletic pubalgia (AP) surgery in elite American football athletes participating in the National Football League (NFL) Combine. METHODS: Results from 1,311 athletes participating in the Combine from 2012 to 2015 were evaluated. Athletes with a history of AP repair were identified using the NFL Combine Database. Athlete history and available imaging was reviewed. NFL performance based on draft status, games played, games started, and current status in the NFL was gathered using publicly available databases...
March 8, 2017: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/28284511/permanent-prostate-brachytherapy-pubic-arch-evaluation-with-diagnostic-mri
#11
Geoffrey V Martin, Thomas J Pugh, Usama Mahmood, Rajat J Kudchadker, Jihong Wang, Teresa L Bruno, Tharakeswara Bathala, Steven J Frank
PURPOSE: Pubic arch interference (PAI), when it occurs, is often a limiting factor for patients pursuing brachytherapy treatment of prostate cancer. Pre-brachytherapy pubic arch evaluation is often performed by CT or transrectal ultrasound (TRUS), but MRI has increasingly replaced these modalities for prostate cancer evaluation. The purpose of this study was to determine if staging MRI could be used to evaluate PAI and compare it with these other imaging methods. METHODS AND MATERIALS: Forty-one consecutive patients undergoing brachytherapy evaluation had pelvic MRI-, CT-, and TRUS-based brachytherapy simulation...
March 8, 2017: Brachytherapy
https://www.readbyqxmd.com/read/28283284/mri-in-the-evaluation-of-obstructive-reproductive-tract-anomalies-in-paediatric-patients
#12
H Zhang, H Qu, G Ning, B Cheng, F Jia, X Li, X Chen
AIM: To outline the anatomical variations of obstructive reproductive tract anomalies (ORTA) using magnetic resonance imaging (MRI) and its role in preoperative evaluation. MATERIALS AND METHODS: MRI and treatment of 21 paediatric patients with ORTA were reviewed and analysed. MRI findings were correlated with ultrasound and surgical findings. RESULTS: Patients presented in two distinct ways: primary amenorrhoea with cyclic pelvic pain, or progressive dysmenorrhoea...
March 7, 2017: Clinical Radiology
https://www.readbyqxmd.com/read/28268809/automated-tracking-segmentation-and-trajectory-classification-of-pelvic-organs-on-dynamic-mri
#13
Iman Nekooeimehr, Susana Lai-Yuen, Paul Bao, Alfredo Weitzenfeld, Stuart Hart
Pelvic organ prolapse is a major health problem in women where pelvic floor organs (bladder, uterus, small bowel, and rectum) fall from their normal position and bulge into the vagina. Dynamic Magnetic Resonance Imaging (DMRI) is presently used to analyze the organs' movements from rest to maximum strain providing complementary support for diagnosis. However, there is currently no automated or quantitative approach to measure the movement of the pelvic organs and their correlation with the severity of prolapse...
August 2016: Conference Proceedings: Annual International Conference of the IEEE Engineering in Medicine and Biology Society
https://www.readbyqxmd.com/read/28262272/pet-mr-imaging-of-pelvic-malignancies
#14
Axel Wetter, Johannes Grueneisen, Lale Umutlu
Integrated PET/MRI is a new technology which allows simultaneous acquisition of positron emission tomography and magnetic resonance imaging data during one examination. The technique appears to be particularly appropriate for oncologic imaging of female and male pelvic malignancies, as these entities demand a high soft tissue contrast and might be further assessed metabolically with PET. The review article highlights recent developments of integrated PET/MRI in pelvic malignancies.
February 20, 2017: European Journal of Radiology
https://www.readbyqxmd.com/read/28258616/focal-salvage-hifu-in-radiorecurrent-prostate-cancer
#15
A Kanthabalan, M Peters, M Van Vulpen, N McCartan, R G Hindley, A Emara, M C Moore, M Arya, M Emberton, H U Ahmed
OBJECTIVE: To assess short to medium term cancer control rates and side effects of focal salvage High Intensity Focused Ultrasound (HIFU). MATERIALS AND METHODS: A retrospective registry analysis identified 150 men who underwent focal salvage HIFU (Sonablate 500) (November 2006-August 2015). Metastatic disease was excluded using the nodal assessment on the pelvic MRI, a radioisotope bone scan and PET imaging (choline-FDG-PET or Choline PET-CT). In our current clinical practice, metastatic disease must be ruled out by both Choline PET and bone scan...
March 4, 2017: BJU International
https://www.readbyqxmd.com/read/28258300/pelvic-and-lower-extremity-physiological-cross-sectional-areas-an-mri-study-of-the-living-young-and-comparison-to-published-research-literature
#16
Juliane Lube, Natasha A M S Flack, Sebastian Cotofana, Orkun Özkurtul, Stephanie J Woodley, Stefan Zachow, Niels Hammer
PURPOSE: Morphological data pertaining to the pelvis and lower extremity muscles are increasingly being used in biomechanical modeling to compare healthy and pathological conditions. Very few data sets exist that encompass all of the muscles of the lower limb, allowing for comparisons between regions. The aims of this study were to (a) provide physiological cross-sectional area (PCSA) data for the pelvic, thigh, and leg muscles in young, healthy participants, using magnetic resonance imaging (MRI), and (b) to compare these data with summarized PCSAs obtained from the literature...
March 3, 2017: Surgical and Radiologic Anatomy: SRA
https://www.readbyqxmd.com/read/28258018/left-sided-varicocele-as-a-rare-presentation-of-may-thurner-syndrome
#17
J R Stern, V I Patel, D E Cafasso, N B Gentile, A J Meltzer
INTRODUCTION: May-Thurner syndrome (MTS), the clinical sequelae of left iliac vein compression between the right iliac artery and the spine, is an accepted cause of lower extremity edema and venous thromboembolism. It is more prevalent in younger women, and typically presents with left lower extremity symptoms. Atypical presentations such as right-sided symptoms, chronic pelvic pain, and even fatal venous rupture have been reported. Here we describe iliac vein compression presenting as a chronic left-sided testicular varicocele...
February 28, 2017: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/28255386/variation-in-uterus-position-prior-to-brachytherapy-of-the-cervix-a-case-report
#18
M T Georgescu, R Anghel
Rationale: brachytherapy is administered in the treatment of patients with locally advanced cervical cancer following chemoradiotherapy. Lack of local anatomy evaluation prior to this procedure might lead to the selection of an inappropriate brachytherapy applicator, increasing the risk of side effects (e.g. uterus perforation, painful procedure ...). Objective: To assess the movement of the uterus and cervix prior to brachytherapy in patients with gynecological cancer, in order to select the proper type of brachytherapy applicator...
January 2017: Journal of Medicine and Life
https://www.readbyqxmd.com/read/28249339/dual-energy-ct-a-novel-technique-for-diagnostic-testing-of-fragility-fractures-of-the-pelvis
#19
Carsten Hackenbroch, Hans-Joachim Riesner, Patricia Lang, Fabian Stuby, Burkhardt Danz, Benedikt Friemert, Hans-Georg Palm
Background The incidence of fragility fractures of the pelvis is increasing. Established methods to diagnose this condition include X-rays, computed tomography (CT) and magnetic resonance imaging (MRI). Dual energy CT (DECT) is a modern technology for the imaging of bone oedema/bruises and has been used in injuries of the extremities and spine. It is unclear whether this technique can also be used in fragility fractures of the pelvis. The aim of this study was to perform a literature research and survey of the "AG Becken III" members of the German Society of Trauma Surgery (DGU) on the usefulness of DECT in fractures of the pelvis...
February 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28248876/obturator-externus-abscess-in-a-9-year-old-child-a-case-report-and-literature-review
#20
Charlotte de Bodman, Dimitri Ceroni, Justine Dufour, Pierre-Alex Crisinel, Aline Bregou-Bourgeois, Pierre-Yves Zambelli
RATIONALE: Obturator pyomyositis is a rare condition in children. Diagnosis is often delayed because of its rarity, and the vagaries of its presentation cause it to be easily be missed. Physicians should therefore familiarize themselves with this condition and consider it as a possible differential diagnosis in patients presenting with an acutely painful hip. Inflammatory syndrome is also frequent among sufferers and the MRI is a very sensitive diagnostic tool for obturator pyomyositis...
March 2017: Medicine (Baltimore)
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