keyword
MENU ▼
Read by QxMD icon Read
search

Multiparametric MRI

keyword
https://www.readbyqxmd.com/read/29450854/imaging-of-the-scrotum-beyond-sonography
#1
REVIEW
Gian Carlo Parenti, Francesco Feletti, Aldo Carnevale, Licia Uccelli, Melchiore Giganti
The aim of this article is to describe the role of second-level imaging techniques after an initial ultrasonography evaluation in the assessment of scrotal diseases. While ultrasonography remains central as the primary imaging modality for the evaluation of pathologic conditions of the scrotum, the role of magnetic resonance imaging continues to evolve: it can actually be valuable as a problem-solving tool when sonographic findings are equivocal or inconclusive. Magnetic resonance imaging of the scrotum may provide accurate detection and characterization of scrotal diseases, well depicting the precise location of scrotal masses (intratesticular or extratesticular) and reliably characterizing benign conditions simulating neoplastic processes, thus preventing unnecessary radical surgery...
February 15, 2018: Insights Into Imaging
https://www.readbyqxmd.com/read/29444146/prediction-of-small-for-size-syndrome-after-extended-hepatectomy-tissue-characterization-by-relaxometry-diffusion-weighted-magnetic-resonance-imaging-and-magnetization-transfer
#2
Christian Eberhardt, Moritz C Wurnig, Andrea Wirsching, Cristina Rossi, Idana Feldmane, Mickael Lesurtel, Andreas Boss
This study aimed to monitor the course of liver regeneration by multiparametric magnetic-resonance imaging (MRI) after partial liver resection characterizing Small-for-Size Syndrome (SFSS), which frequently leads to fatal post-hepatectomy liver failure (PLF). Twenty-two C57BL/6 mice underwent either conventional 70% partial hepatectomy (cPH), extended 86% partial hepatectomy (ePH) or SHAM operation. Subsequent MRI scans on days 0, 1, 2, 3, 5 and 7 in a 4.7T MR Scanner quantified longitudinal and transverse relaxation times, apparent diffusion coefficient (ADC) and the magnetization-transfer ratio (MTR) of the regenerating liver parenchyma...
2018: PloS One
https://www.readbyqxmd.com/read/29440326/multiparametric-mri-of-intracranial-aneurysms-treated-with-the-woven-endobridge-web-a-case-of-faraday-s-cage
#3
Marie Teresa Nawka, Jan Sedlacik, Andreas Frölich, Maxim Bester, Jens Fiehler, Jan-Hendrik Buhk
OBJECTIVE: To evaluate multiparametric MRI including non-contrast and contrast-enhanced morphological and angiographic techniques for intracranial aneurysms treated with the single-layer Woven EndoBridge (WEB) embolization system applying simultaneous digital subtraction angiography (DSA) as the reference of standard. MATERIALS AND METHODS: We retrospectively identified all patients with incidental and acute ruptured intracranial aneurysms treated with a WEB device (WEB SL and WEB SLS) between March 2014 and June 2016 in our neurovascular center with early (within 7 days) postinterventional multiparametric MRI as well as mid-term (5-8 months) follow-up MRI and DSA available...
February 10, 2018: Journal of Neurointerventional Surgery
https://www.readbyqxmd.com/read/29435739/multiparametric-magnetic-resonance-imaging-in-the-assessment-of-pulmonary-hypertension-initial-experience-of-a-one-stop-study
#4
Gisela M B Meyer, Fernanda B Spilimbergo, Stephan Atmayer, Gabriel S Pacini, Matheus Zanon, Guilherme Watte, Edson Marchiori, Bruno Hochhegger
INTRODUCTION: Our goal was to assess the diagnostic performance of magnetic resonance imaging (MRI) as a single method to diagnose pulmonary hypertension (PH) compared to right heart catheterization (RHC), computed tomography (CT), and ventilation/perfusion (V/Q) scintigraphy. METHODS: We identified 35 patients diagnosed with PH by RHC in our institution who have also undergone a CT, a scintigraphy, and an MRI within a month. All cases were discussed in multidisciplinary meetings...
February 12, 2018: Lung
https://www.readbyqxmd.com/read/29432339/18f-choline-pet-mr-can-detect-and-delineate-local-recurrence-after-high-intensity-focused-ultrasound-therapy-of-prostate-cancer
#5
Irene A Burger, Andrei Gafita, Julian Müller, Benedikt Kranzbühler, Olivio F Donati, Daniel Eberli
Restaging local recurrence after high-intensity focused ultra-sound (HIFU) is based on multiparametric MRI (mpMRI). However, postinterventional changes of the tissue, such as edema or hemorrhage, are limiting tumor detection on mpMRI. We present a case of a rising prostate-specific antigen values, negative mpMRI, and a Gleason score of 4+4 on template biopsy after HIFU. On F-choline PET/MR, high focal uptake was detected at the location of positive biopsy. Re-HIFU based on the fused F-choline PET/MR images was performed, followed by a recurrence-free period of 11 months...
February 9, 2018: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/29428182/online-interactive-case-based-instruction-in-prostate-magnetic-resonance-imaging-interpretation-using-prostate-imaging-and-reporting-data-system-version-2-effect-for-novice-readers
#6
Andrew B Rosenkrantz, Jovan Begovic, Antonio Pires, Eugene Won, Samir S Taneja, James S Babb
PURPOSE: To assess the effect on reader performance of an interactive case-based online tutorial for prostate magnetic resonance imaging (MRI) interpretation using Prostate Imaging and Reporting Data System (PI-RADS). METHODS: An educational website was developed incorporating scrollable multiparametric prostate MRI examinations with annotated solutions based on PI-RADS version 2. Three second-year radiology residents evaluated a separate set of 60 prostate MRI examinations both before and after review of the online case material, identifying and scoring dominant lesions...
January 10, 2018: Current Problems in Diagnostic Radiology
https://www.readbyqxmd.com/read/29425058/a-multiparametric-analysis-combining-dce-mri-and-ivim-derived-parameters-to-improve-differentiation-of-parotid-tumors-a-pilot-study
#7
Francesca Patella, Giuseppe Franceschelli, Mario Petrillo, Mario Sansone, Roberta Fusco, Filippo Pesapane, Giovanni Pompili, Anna Maria Ierardi, Alberto Maria Saibene, Laura Moneghini, Federico Biglioli, Gianpaolo Carrafiello
AIM: To evaluate dynamic contrast-enhanced (DCE)-MRI and diffusion weighted (DW)-MRI diagnostic value to differentiate Warthin tumors (WT) by pleomorphic adenomas (PA). MATERIALS & METHODS: Seven WT and seven PA were examined. DCE- and  DW-MRI parameters were extracted from volumes of interest; volume of interest-based averages and standard deviations were calculated. Statistical analysis included: linear discriminant analysis, receiver operating characteristic curves, sensitivity and specificity...
February 9, 2018: Future Oncology
https://www.readbyqxmd.com/read/29422425/utility-of-clinical-parameters-and-multiparametric-mri-as-predictive-factors-for-differentiating-uterine-sarcoma-from-atypical-leiomyoma
#8
Qiu Bi, Zhibo Xiao, Fajin Lv, Yao Liu, Chunxia Zou, Yiqing Shen
OBJECTIVES: The objective of this study was to find clinical parameters and qualitative and quantitative magnetic resonance imaging (MRI) features for differentiating uterine sarcoma from atypical leiomyoma (ALM) preoperatively and to calculate predictive values for uterine sarcoma. MATERIALS AND METHODS: Data from 60 patients with uterine sarcoma and 88 patients with ALM confirmed by surgery and pathology were collected. Clinical parameters, qualitative MRI features, diffusion-weighted imaging with apparent diffusion coefficient values, and quantitative parameters of dynamic contrast-enhanced MRI of these two tumor types were compared...
February 5, 2018: Academic Radiology
https://www.readbyqxmd.com/read/29420978/multiparametric-mr-imaging-of-the-prostate-interpretation-including-prostate-imaging-reporting-and-data-system-version-2
#9
REVIEW
Alessandro Furlan, Amir A Borhani, Antonio C Westphalen
mp-MRI of the prostate is a complex study that combines anatomic and functional imaging. The complexity of this technique, along with an increasing demand, has brought new challenges to imaging interpretation. The Prostate Imaging Reporting and Data System provides radiologists with guidelines to standardize interpretation. This article discusses the interpretation of the pulse sequences recommended in the Prostate Imaging Reporting and Data System version 2 guidelines, reviews advanced quantitative imaging tools, and discusses future directions...
March 2018: Radiologic Clinics of North America
https://www.readbyqxmd.com/read/29412496/characterization-of-active-and-infiltrative-tumorous-subregions-from-normal-tissue-in-brain-gliomas-using-multiparametric-mri
#10
Anahita Fathi Kazerooni, Mahnaz Nabil, Mehdi Zeinali Zadeh, Kavous Firouznia, Farid Azmoudeh-Ardalan, Alejandro F Frangi, Christos Davatzikos, Hamidreza Saligheh Rad
BACKGROUND: Targeted localized biopsies and treatments for diffuse gliomas rely on accurate identification of tissue subregions, for which current MRI techniques lack specificity. PURPOSE: To explore the complementary and competitive roles of a variety of conventional and quantitative MRI methods for distinguishing subregions of brain gliomas. STUDY TYPE: Prospective. POPULATION: Fifty-one tissue specimens were collected using image-guided localized biopsy surgery from 10 patients with newly diagnosed gliomas...
February 7, 2018: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/29410694/multiparametric-ultrasound-findings-in-a-patient-with-polyorchidism
#11
Vasileios Rafailidis, Mary Arvaniti, Dimitrios Rafailidis, Dimitrios Sfoungaris
Polyorchidism is a rare condition usually incidentally discovered in young patients investigated with ultrasound for unrelated reasons. It is characterized by the presence of unilateral or, rarely, bilateral supernumerary testes which, depending on the type of polyorchidism, may have their own epididymis and vas deferens. Ultrasound, including B-mode and color Doppler technique, represents the primary imaging modality for the evaluation of scrotal diseases, including the characterization of supernumerary testes, which normally appear identical to the ipsilateral testicular parenchyma on every ultrasonographic technique performed...
August 2017: Ultrasound: Journal of the British Medical Ultrasound Society
https://www.readbyqxmd.com/read/29409824/68ga-psma-pet-ct-for-primary-diagnosis-of-prostate-cancer-in-men-with-contraindications-to-or-negative-mpmri-a-prospective-observational-study
#12
Egesta Lopci, Alberto Saita, Massimo Lazzeri, Giovanni Lughezzani, Piergiuseppe Colombo, Nicolò Maria Buffi, Rodolfo Hurle, Katia Marzo, Roberto Peschechera, Alessio Benetti, Silvia Zandegiacomo, Luisa Pasini, Giuliana Lista, Pasquale Cardone, Angelo Castello, Davide Maffei, Luca Balzarini, Arturo Chiti, Giorgio Guazzoni, Paolo Casale
BACKGROUND: 68Ga-PSMA PET/CT may represent the most promising imaging modality for identification and risk stratification of prostate cancer (PCa) in patients with contraindications to or negative multiparametric MRI (mpMRI). METHODS: This prospective observational study analyzed 68Ga-PSMA PET/CT in a selected group of patients with persistently elevated PSA and/or PHI (prostate health index) suspicious for PCa, negative digital rectal examination, and at least one negative biopsy...
January 31, 2018: Journal of Urology
https://www.readbyqxmd.com/read/29407999/pilot-study-for-supervised-target-detection-applied-to-spatially-registered-multiparametric-mri-in-order-to-non-invasively-score-prostate-cancer
#13
Rulon Mayer, Charles B Simone, William Skinner, Baris Turkbey, Peter Choykey
BACKGROUND: Gleason Score (GS) is a validated predictor of prostate cancer (PCa) disease progression and outcomes. GS from invasive needle biopsies suffers from significant inter-observer variability and possible sampling error, leading to underestimating disease severity ("underscoring") and can result in possible complications. A robust non-invasive image-based approach is, therefore, needed. PURPOSE: Use spatially registered multi-parametric MRI (MP-MRI), signatures, and supervised target detection algorithms (STDA) to non-invasively GS PCa at the voxel level...
January 27, 2018: Computers in Biology and Medicine
https://www.readbyqxmd.com/read/29388415/innovations-in-imaging-modalities-for-recurrent-and-metastatic-prostate-cancer-a-systematic-review
#14
Simone Albisinni, Fouad Aoun, Quentin Marcelis, Claude Jungels, Walid Al Hajj Obeid, Marc Zanaty, Andrea Tubaro, Thierry Roumeguere, Cosimo DE Nunzio
INTRODUCTION: The last decade has witnessed tremendous changes in the management of advanced and metastatic castration resistant prostate cancer (mCRPC). In the current systematic review, we analyze novel imaging techniques in the setting of recurrent and metastatic PCa, exploring available data and highlighting future exams which could enter clinical practice in the upcoming years. EVIDENCE ACQUISITION: The National Library of Medicine Database was searched for relevant articles published between January 2012 and August 2017...
January 31, 2018: Minerva Urologica e Nefrologica, the Italian Journal of Urology and Nephrology
https://www.readbyqxmd.com/read/29379990/-pet-mri
#15
REVIEW
Bettina Beuthien-Baumann
CLINICAL/METHODICAL ISSUE: Magnet resonance imaging (MRI) is an excellent anatomical reference method for the combination with positron emission tomography (PET). But MRI does not produce data, which can be directly used for attenuation correction of PET data, potentially compromising quantitative accuracy of PET. STANDARD RADIOLOGICAL METHODS: Hybrid-positron emission tomography/computed tomography (PET/CT) is an established standard diagnostic tool, particularly for staging and restaging in oncology...
January 29, 2018: Der Radiologe
https://www.readbyqxmd.com/read/29376089/mri-biomarkers-of-proximal-nerve-injury-in-cidp
#16
Thorsten Lichtenstein, Alina Sprenger, Kilian Weiss, Karin Slebocki, Barbara Cervantes, Dimitrios Karampinos, David Maintz, Gereon R Fink, Tobias D Henning, Helmar C Lehmann
Objective: To evaluate the utility of nerve diffusion tensor imaging (DTI), nerve cross-sectional area, and muscle magnetic resonance imaging (MRI) multiecho Dixon for assessing proximal nerve injury in chronic inflammatory demyelinating polyneuropathy (CIDP). Methods: In this prospective observational cohort study, 11 patients with CIDP and 11 healthy controls underwent a multiparametric MRI protocol with DTI of the sciatic nerve and assessment of muscle proton-density fat fraction of the biceps femoris and the quadriceps femoris muscles by multiecho Dixon MRI...
January 2018: Annals of Clinical and Translational Neurology
https://www.readbyqxmd.com/read/29374321/multiparametric-mri-as-a-potential-surrogate-endpoint-for-decision-making-in-early-treatment-response-following-concurrent-chemoradiotherapy-in-patients-with-newly-diagnosed-glioblastoma-a-systematic-review-and-meta-analysis
#17
Chong Hyun Suh, Ho Sung Kim, Seung Chai Jung, Choong Gon Choi, Sang Joon Kim
OBJECTIVE: To evaluate the value of multiparametric MRI for determination of early treatment response following concurrent chemoradiotherapy in patients with newly diagnosed glioblastoma. METHODS: A computerized search of Ovid-MEDLINE and EMBASE up to 1 October 2017 was performed to find studies on the diagnostic performance of multiparametric MRI for differentiating true progression from pseudoprogression. The beginning search date was not specified. Pooled estimates of sensitivity and specificity were obtained using hierarchical logistic regression modeling...
January 26, 2018: European Radiology
https://www.readbyqxmd.com/read/29369183/retrospective-analysis-of-the-utility-of-multiparametric-mri-for-differentiating-between-benign-and-malignant-breast-lesions-in-women-in-china
#18
Wei Xiong Fan, Xiao Feng Chen, Feng Yan Cheng, Ya Bao Cheng, Tai Xu, Wen Biao Zhu, Xiao Lei Zhu, Gui Jin Li, Shuai Li
We explored the utility of time-resolved angiography with interleaved stochastic trajectories dynamic contrast-enhanced magnetic resonance imaging (TWIST DCE-MRI), readout segmentation of long variable echo-trains diffusion-weighted magnetic resonance imaging- diffusion-weighted magnetic resonance imaging (RESOLVE-DWI), and echo-planar imaging- diffusion-weighted magnetic resonance imaging (EPI-DWI) for distinguishing between malignant and benign breast lesions.This retrospective analysis included female patients with breast lesions seen at a single center in China between January 2016 and April 2016...
January 2018: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29368230/multiparametric-ultrasound-targeted-biopsy-compares-favorably-to-multiparametric-mri-transrectal-ultrasound-fusion-targeted-biopsy-on-initial-biopsy-of-men-at-risk-for-prostate-cancer
#19
Pat F Fulgham
PURPOSE: The purpose this study is to evaluate the efficacy of multiparametric ultrasound-targeted biopsies in patients undergoing initial biopsy of the prostate for the suspicion of prostate cancer. MATERIALS AND METHODS: A total of 167 patients who are biopsy naïve underwent multiparametric ultrasound-targeted biopsy of the prostate. All patients had a transrectal ultrasound which included gray-scale evaluation and color Doppler evaluation. 12-core biopsies were performed on all patients, based on sextant anatomy; however, all cores were directed toward visually abnormal areas of the prostate as identified by multiparametric ultrasound, when such areas were present...
January 24, 2018: World Journal of Urology
https://www.readbyqxmd.com/read/29367598/cerebral-perfusion-insufficiency-and-relationships-with-cognitive-deficits-in-alzheimer-s-disease-a-multiparametric-neuroimaging-study
#20
Chi-Wei Huang, Shih-Wei Hsu, Ya-Ting Chang, Shu-Hua Huang, Yung-Cheng Huang, Chen-Chang Lee, Wen-Neng Chang, Chun-Chung Lui, Na-Ching Chen, Chiung-Chih Chang
Micro- or macro-circulatory insufficiency has a negative impact in patients with Alzheimer's disease (AD). This study used arterial spin-labeled magnetic resonance imaging (ASL-MRI) and ethylcysteinate dimer single-photon emission computed tomography (ECD-SPECT) in 50 patients with AD and 30 age-matched controls to investigate how hypoperfusion patterns were associated with gray matter atrophy and clinical data. All participants completed 3DT1-MRI, ECD-SPECT and ASL-MRI examinations. Medial temporal cortex (MTC) volumes were correlated with regional signals showing significantly lower relative cerebral blood flow (rCBF) in ASL-MRI or perfusion index (PI) in ECD-SPECT...
January 24, 2018: Scientific Reports
keyword
keyword
7556
1
2
Fetch more papers »
Fetching more papers... Fetching...
Read by QxMD. Sign in or create an account to discover new knowledge that matter to you.
Remove bar
Read by QxMD icon Read
×

Search Tips

Use Boolean operators: AND/OR

diabetic AND foot
diabetes OR diabetic

Exclude a word using the 'minus' sign

Virchow -triad

Use Parentheses

water AND (cup OR glass)

Add an asterisk (*) at end of a word to include word stems

Neuro* will search for Neurology, Neuroscientist, Neurological, and so on

Use quotes to search for an exact phrase

"primary prevention of cancer"
(heart or cardiac or cardio*) AND arrest -"American Heart Association"