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https://www.readbyqxmd.com/read/28727710/management-of-symptomatic-tarlov-cysts-a-retrospective-observational-study
#1
Wei Jiang, Zhenming Hu, Jie Hao
BACKGROUND: Symptomatic Tarlov cysts are a common cause of chronic pain. Many methods have been reported to treat this disease, with variable results. Most previous reports concerning the treatment methods of symptomatic Tarlov cysts were either sporadic case reports or series of limited cases. OBJECTIVE: This study aimed to further optimize the management for patients with symptomatic Tarlov cysts (TCs) by analyzing the results of 82 patients who were treated with different strategies...
July 2017: Pain Physician
https://www.readbyqxmd.com/read/28725589/multi-parametric-magnetic-resonance-imaging-as-a-management-decision-tool
#2
REVIEW
David C Johnson, Robert E Reiter
The ability to image the prostate accurately and better characterize cancerous lesions makes multiparametric magnetic resonance imaging (mpMRI) an invaluable tool to improve management of localized prostate cancer (PCa). Improved risk stratification is warranted given the evidence of significant overtreatment of indolent PCa. mpMRI can more accurately rule out clinically significant PCa in men deciding between surveillance and definitive treatment to reduce overtreatment. mpMRI improves detection of clinically significant PCa, which helps minimize sampling error, a major limitation of the traditional diagnostic paradigm...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28725584/magnetic-resonance-imaging-detection-of-prostate-cancer-in-men-with-previous-negative-prostate-biopsy
#3
REVIEW
Matthew Truong, Thomas P Frye
Use of transrectal ultrasound guided systematic prostate biopsy has poor diagnostic accuracy for prostate cancer (PCa) detection. Recently multiparametric MRI (mpMRI) of the prostate and MR/US fusion biopsy has been gaining popularity for men who have previously undergone a negative biopsy. We performed PubMed(®) and Web of Science(®) searches to identify studies on this subject, particularly focusing on studies consisting of patients who have had at least one previously negative biopsy. Across the literature, when a suspicious lesion is found on mpMRI, MR/US fusion biopsy has consistently demonstrated higher detection rate for any PCa and clinically significant PCa (csPCa) compared to the traditional repeat systematic biopsy (SB) approach...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28725582/co-registration-of-mri-and-ultrasound-accuracy-of-targeting-based-on-radiology-pathology-correlation
#4
REVIEW
Win Shun Lai, Jessica G Zarzour, Jennifer B Gordetsky, Soroush Rais-Bahrami
We reviewed the role of multiparametric magnetic resonance imaging (MP-MRI) and methods of MRI guided biopsy including in-bore, cognitive fusion, and software-based fusion. MP-MRI has been developed, optimized, and studied as a means of improving prostate cancer detection beyond the standard evaluation that utilizes digital rectal examinations and serum prostate specific antigen (PSA). MP-MRI has been proven to be an excellent diagnostic imaging modality that improves prostate cancer detection and risk stratification by guiding biopsy samples...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28725581/direct-magnetic-resonance-imaging-guided-biopsy-of-the-prostate-lessons-learned-in-establishing-a-regional-referral-center
#5
REVIEW
Benjamin Addicott, Bryan R Foster, Chenara Johnson, Alice Fung, Christopher L Amling, Fergus V Coakley
MRI-targeted biopsy of the prostate appears to have the potential to reduce the high rates of underdiagnosis and overdiagnosis associated with the current diagnostic standard of transrectal ultrasound guided systematic biopsy. Direct or "in bore" MRI-guided biopsy is one of the three methods for MRI-targeted core needle sampling of suspicious, generally Pi-RADS 4 or 5, foci within the prostate, and our early experience suggests the approach demonstrates substantial utility and promise in the care of patients with prostate cancer...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28725580/pre-biopsy-mri-as-an-adjunct-for-cancer-detection-in-men-with-elevated-psa-and-no-previous-biopsy
#6
REVIEW
Facundo Uriburu-Pizarro, Veeru Kasivisvanathan, Philippe Puech, Arnauld Villers
The role of magnetic resonance imaging (MRI) prior to biopsy in the diagnosis of prostate cancer in biopsy-naïve patients has been strengthened by recent developments such as the PIRADS V2 criteria, which cover acquisition, interpretation, and reporting for clinical practice and data collection for research. Important questions on the role of prostate MRI remain: can MRI be used as a triage test before first biopsy series? Can it be used to avoid the use of systematic biopsies (SB) and instead use only targeted biopsies (TB) to MRI-suspicious lesions? Studies to evaluate image guided TB compared to SB have started to accumulate...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28725578/transperineal-vs-transrectal-biopsy-in-mri-targeting
#7
REVIEW
Jeremy Grummet, Lana Pepdjonovic, Sean Huang, Elliot Anderson, Boris Hadaschik
Prostate biopsy is typically performed via either the transrectal or transperineal approach. MRI-targeted biopsy, whether using any of the three options of cognitive fusion, MRI-ultrasound fusion software, or in-bore MRI-guided biopsy, can also be performed via either transrectal or transperineal approaches. As an extension of traditional random prostate biopsy, the transrectal approach is far more commonly used for MRI-targeted biopsy due to its convenience. However, in the context of today's increasing multi-drug resistance of rectal flora, the transperineal approach is being used more often due to its lack of septic complications...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28725576/cost-consideration-in-utilization-of-multiparametric-magnetic-resonance-imaging-in-prostate-cancer
#8
REVIEW
Ryan Hutchinson, Yair Lotan
The screening, evaluation and management of prostate cancer changed significantly in the last decade. The recommendations regarding prostate cancer screening continue to evolve with new revelations about existing data sets and longer followup of landmark trials. Robotics has gained the vast majority of the marketplace for surgically managed prostate cancer in rapid fashion. The need for intervention in low risk prostate cancer has been closely examined and more men are being expectantly managed than ever before...
June 2017: Translational Andrology and Urology
https://www.readbyqxmd.com/read/28721530/-imaging-representation-of-the-aorta
#9
REVIEW
C Reeps, S Schellong, R T Hoffmann
Depending on the type and acuteness, diseases of the aorta can be imaged by a variety of techniques. Modalities and quality of imaging have developed rapidly in recent years. In combination with the clinical assessment of patients, the results obtained by imaging determine the further management. They not only establish the underlying diagnosis but provide the information essential for indications, planning and reassessment of therapy, as well as for evaluation of the clinical course and surveillance. Whereas conventional catheter-guided angiography and intravascular ultrasound are only used in exceptional cases and then in conjunction with interventional therapy, cross-sectional imaging modalities, such as contrast-enhanced computed tomography (CT) angiography and magnetic resonance imaging (MRI) are nowadays the mainstay of diagnostics...
July 18, 2017: Der Internist
https://www.readbyqxmd.com/read/28721479/new-prostate-cancer-prognostic-grade-group-pgg-can-multiparametric-mri-mpmri-accurately-separate-patients-with-low-intermediate-and-high-grade-cancer
#10
Jamie N Holtz, Rachel Kloss Silverman, Kae Jack Tay, Jill T Browning, Jiaoti Huang, Thomas J Polascik, Rajan T Gupta
PURPOSE: Our objective is to determine the accuracy of multiparametric MRI (mpMRI) in predicting pathologic grade of prostate cancer (PCa) after radical prostatectomy (RP) using simple apparent diffusion coefficient metrics and, specifically, whether mpMRI can accurately separate disease into one of two risk categories (low vs. higher grade) or one of three risk categories (low, intermediate, or high grade) corresponding to the new prognostic grade group (PGG) criteria. METHODS: This retrospective, HIPAA-compliant, IRB-approved study included 140 patients with PCa who underwent 3 T mpMRI with endorectal coil and transrectal ultrasound-guided (TRUS-G) biopsy before RP...
July 18, 2017: Abdominal Radiology
https://www.readbyqxmd.com/read/28721093/gout-mimicking-spondyloarthritis-case-report-and-literature-review
#11
Wenji Chen, Yanyan Wang, Yan Li, Zheng Zhao, Lixia Feng, Jian Zhu, Jianglin Zhang, Feng Huang
Gout is clinically characterized by episodes of monoarthritis, which not only typically affects the peripheral joints but also occasionally affect the axial joint, such as the sacroiliac joint (SIJ), and often mimics spondyloarthritis (SpA). Two cases of gout mimicking SpA are presented in the current paper. One patient was a 32-year-old man with a history of asymmetrical oligoarthritis of ankle and metatarsophalangeal joints (MTPJ). He had left gluteal pain for 2 weeks. Computed tomography (CT) and magnetic resonance imaging (MRI) revealed the bone erosion of the left SIJ...
2017: Journal of Pain Research
https://www.readbyqxmd.com/read/28719455/microscope-and-fiberscope-assisted-subarachnoid-subarachnoid-s-s-bypass-a-novel-surgical-technique-to-reestablish-cerebrospinal-fluid-flow-in-treating-dorsal-spinal-arachnoid-webs-diagnosed-by-cine-mri
#12
Yasushi Fujiwara, Hideki Manabe, Bunichiro Izumi, Takayuki Shima, Nobuo Adachi
A "dorsal spinal arachnoid web" is the thickened arachnoid band on the surface of the spinal cord which disturbs the cerebrospinal fluid (CSF) flow, known as a rare cause of thoracic myelopathy. The ideal treatment is controversial because of the risk of readhesion after simple resection of the web. A subarachnoid-subarachnoid bypass is a method to reestablish CSF flow through a silicon tube between the cranial and caudal subarachnoid space. This method is reported to be useful for traumatic syringomyelia, adhesive arachnoiditis, etc...
July 17, 2017: Clinical Spine Surgery
https://www.readbyqxmd.com/read/28719087/mri-guided-stereotactic-neurosurgical-procedures-in-a-diagnostic-mri-suite-background-and-safe-practice-recommendations
#13
Paul S Larson, Jon T Willie, Sudhakar Vadivelu, Hooman Azmi-Ghadimi, Amy Nichols, Loretta Litz Fauerbach, Helen Boehm Johnson, Denise Graham
The development of navigation technology facilitating MRI-guided stereotactic neurosurgery has enabled neurosurgeons to perform a variety of procedures ranging from deep brain stimulation to laser ablation entirely within an intraoperative or diagnostic MRI suite while having real-time visualization of brain anatomy. Prior to this technology, some of these procedures required multisite workflow patterns that presented significant risk to the patient during transport. For those facilities with access to this technology, safe practice guidelines exist only for procedures performed within an intraoperative MRI...
July 2017: Journal of Healthcare Risk Management: the Journal of the American Society for Healthcare Risk Management
https://www.readbyqxmd.com/read/28715317/itk-snap-an-intractive-medical-image-segmentation-tool-to-meet-the-need-for-expert-guided-segmentation-of-complex-medical-images
#14
Paul A Yushkevich, Guido Gerig
Imaging is a crucial tool in medicine and biomedical research. Magnetic resonance imaging (MRI), computational tomography (CT), proton emission tomography (PET), and ultrasound are routinely used not only to diagnose disease but also to plan and guide surgical interventions, track disease progression, measure the response of the body to treatment, and understand how genetic and environmental factors relate to anatomical and functional phenotypes.
July 2017: IEEE Pulse
https://www.readbyqxmd.com/read/28715042/-diagnostic-significance-of-multiparametric-mri-combined-with-us-fusion-guided-biopsy-of-the-prostate-in-patients-with-increased-psa-levels-and-negative-standard-biopsy-results-to-detect-significant-prostate-cancer-correlation-with-the-gleason-score-korrelation
#15
Manuela Hoffmann, Manuela A Hoffmann, Helmut J Wieler, Frank M Jakobs, Kasra Taymoorian, Arnd Gerhards, Matthias Miederer, Mathias Schreckenberger
AIMS: To increase diagnostic precision and to reduce overtreatment of low-risk malignant disease, multiparametric MRI (mpMRI) combined with ultrasound (US) fusion guided biopsy of the prostate were performed. METHODS: In 99 male patients with increased PSA plasma levels and previous negative standard biopsy procedures, mpMRI was carried out followed by US fusion guided perineal biopsy. PI-RADS-Data (PS) of mpMRI and histopathological Gleason score (GS) were categorized and statistically compared...
July 17, 2017: Nuklearmedizin. Nuclear Medicine
https://www.readbyqxmd.com/read/28714565/mri-compatible-breast-rib-phantom-for-evaluating-ultrasonic-thermal-exposures
#16
Georgios Menikou, Marinos Yiannakou, Christos Yiallouras, Cleanthis Ioannides, Christakis Damianou
INTRODUCTION: The target of this study was the development of a magnetic resonance imaging (MRI) compatible breast phantom for focused ultrasound which includes plastic (ABS) ribs. The objective of the current study was the evaluation of a focused ultrasound procedure using the proposed phantom that eliminates rib heating. MATERIAL AND METHODS: The proposed phantom was evaluated using two different focused ultrasound exposures. The surrounding breast tissue was mimicked using an agar-silica-evaporation milk gel (2% w/v - 2% w/v - 40% v/v)...
July 17, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28714454/a-back-projection-algorithm-in-the-presence-of-an-extra-attenuating-medium-towards-epid-dosimetry-for-the-mr-linac
#17
I Torres-Xirau, I Olaciregui-Ruiz, R A Rozendaal, P González, B J Mijnheer, J-J Sonke, U A van der Heide, A Mans
In external beam radiotherapy, electronic portal imaging devices (EPIDs) are frequently used for pre-treatment and for in vivo dose verification. Currently, various MR-guided radiotherapy systems are being developed and clinically implemented. Independent dosimetric verification is highly desirable. For this purpose we adapted our EPID-based dose verification system for use with the MR-Linac combination developed by Elekta in cooperation with UMC Utrecht and Philips. In this study we extended our back-projection method to cope with the presence of an extra attenuating medium between the patient and the EPID...
July 17, 2017: Physics in Medicine and Biology
https://www.readbyqxmd.com/read/28711290/biopsies-of-pediatric-brainstem-lesions-display-low-morbidity-but-strong-impact-on-further-treatment-decisions
#18
Johanna Quick-Weller, Stephanie Tritt, Bedjan Behmanesh, Michel Mittelbronn, Andrea Spyrantis, Nazife Dinc, Lutz Weise, Volker Seifert, Gerhard Marquardt, Thomas M Freiman
OBJECTIVE: The course of malignant brain stem gliomas in childhood is rarely positive. Because of limited therapeutic options and potentially hazardous biopsies oncologist often relay on MRI diagnoses only for further therapy decisions. In this study we show that brain stem biopsies display a low morbidity rate and neuropathological assessment has a considerable impact on further treatment decision. METHODS: Within 18-months five children with brainstem symptoms and the radiological diagnosis of a malignant brainstem glioma, were identified...
July 12, 2017: Journal of Clinical Neuroscience: Official Journal of the Neurosurgical Society of Australasia
https://www.readbyqxmd.com/read/28710468/core-shell-nagdf4-caco3-nanoparticles-for-enhanced-magnetic-resonance-ultrasonic-dual-modal-imaging-via-tumor-acidic-micro-enviroment-triggering
#19
Zuwu Wei, Xiao Lin, Ming Wu, Bixing Zhao, Ruhui Lin, Da Zhang, Yun Zhang, Gang Liu, Xiaolong Liu, Jingfeng Liu
For cancer diagnosis, a paramount challenge still exists in the exploring of methods that can precisely discriminate tumor tissues from their surrounding healthy tissues with a high target-to-background signal ratio. Here, we report a NaGdF4@CaCO3-PEG core-shell nanoparticle which has the tumor acidic microenvironment enhanced imaging signals of ultrasound and magnetic resonance. Under the acidic conditions, the CaCO3 shell will gradually dissolve which then facilitate the interaction of NaGdF4 with the external aqueous environment to enhance water proton relaxation...
July 14, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28707115/preoperative-magnetic-resonance-imaging-predicts-eligibility-for-arthroscopic-primary-anterior-cruciate-ligament-repair
#20
Jelle P van der List, Gregory S DiFelice
PURPOSE: To assess the role of preoperative magnetic resonance imaging (MRI) on the eligibility for arthroscopic primary anterior cruciate ligament (ACL) repair. METHODS: All patients undergoing ACL surgery between 2008 and 2017 were included. Patients underwent arthroscopic primary repair if sufficient tissue length and quality were present, or they underwent single-bundle ACL reconstruction. Preoperative MRI tear locations were graded with the modified Sherman classification: type I (>90% distal remnant length), type II (75-90%), or type III (25-75%)...
July 13, 2017: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
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