keyword
MENU ▼
Read by QxMD icon Read
search

multiparametric magnetic resonance imaging

keyword
https://www.readbyqxmd.com/read/27919861/multiparametric-mri-in-differentiating-pulmonary-artery-sarcoma-and-pulmonary-thromboembolism-a-preliminary-experience
#1
Min Liu, Chunhai Luo, Ying Wang, Xiaojuan Guo, Zhanhong Ma, Yuanhua Yang, Tianjing Zhang
PURPOSE: We aimed to define multiparametric magnetic resonance imaging (MRI) findings to differentiate between pulmonary artery sarcoma (PAS) and pulmonary thromboembolism (PTE). METHODS: Eleven patients with suspected PTE were prospectively included to undergo pulmonary MRI before surgery or biopsy. MRI protocol included an unenhanced sequence, diffusion-weighted imaging (DWI, b=800 s/mm2) and a dynamic contrast-enhanced sequence. Morphologic characteristics including distribution, filling defect, and intensity were observed on T1-, T2-, and fat-suppressed T2-weighted imaging, DWI, and contrast-enhanced MRI...
December 6, 2016: Diagnostic and Interventional Radiology: Official Journal of the Turkish Society of Radiology
https://www.readbyqxmd.com/read/27914180/burned-out-testis-tumors-in-asymptomatic-infertile-men-multiparametric-sonography-and-mri-findings
#2
Laurence Rocher, Ludivine Glas, Marie France Bellin, Sophie Ferlicot, Vincent Izard, Gerard Benoit, Laurence Albiges, Karim Fizazi, Jean-Michel Correas
Multiparametric testicular ultrasound and magnetic resonance imaging (MRI) findings were analyzed in a series of 10 infertile asymptomatic men presenting with pathologically confirmed burned-out testicular tumors. Color/power Doppler ultrasound (CDUS), shear wave elastography (SWE), contrast-enhanced ultrasonography (CEUS), and MRI were performed on 10, 5, 6, and 7 patients, respectively. All lesions appeared as a hypoechoic and hypovascular nodular area at CDUS, SWE, CEUS CDUS, and CEUS (if performed). Shear wave elastography showed a stiffer nodular area compared with the surrounding/contralateral tissues (13 versus 2 kPa); MRI revealed a well-delineated nodular area in hypointense signal on T2, a high apparent diffusion coefficient value, and a lack of enhancement...
December 3, 2016: Journal of Ultrasound in Medicine: Official Journal of the American Institute of Ultrasound in Medicine
https://www.readbyqxmd.com/read/27906722/location-and-grade-of-prostate-cancer-diagnosed-by-transperineal-template-guided-mapping-biopsy-after-negative-transrectal-ultrasound-guided-biopsy
#3
Nathan Bittner, Gregory Merrick, Al Taira, Abbey Bennett, Amy Schattel, Wayne Butler, Robert Galbreath, Edward Adamovich
OBJECTIVES: To determine the location and grade of prostate cancer diagnosed by transperineal template-guided mapping (TTMB) after negative transrectal ultrasound-guided (TRUS) biopsy. MATERIALS AND METHODS: This analysis consisted of 1118 consecutive patients who underwent TTMB from January 2005 to August 2015. Eight hundred thirty-five underwent TTMB after at least 1 negative TRUS biopsy and 283 underwent TTMB as the first biopsy procedure. The study population was divided into cohorts based on the number of prior TRUS biopsy sessions (0, 1, 2, and ≥3)...
November 30, 2016: American Journal of Clinical Oncology
https://www.readbyqxmd.com/read/27882307/metabolic-imaging-in-prostate-cancer-where-we-are
#4
REVIEW
Claudia Testa, Cristian Pultrone, David Neil Manners, Riccardo Schiavina, Raffaele Lodi
In recent years, the development of diagnostic methods based on metabolic imaging has been aimed at improving diagnosis of prostate cancer (PCa) and perhaps at improving therapy. Molecular imaging methods can detect specific biological processes that are different when detected within cancer cells relative to those taking place in surrounding normal tissues. Many methods are sensitive to tissue metabolism; among them, positron emission tomography (PET) and magnetic resonance spectroscopic imaging (MRSI) are widely used in clinical practice and clinical research...
2016: Frontiers in Oncology
https://www.readbyqxmd.com/read/27859835/differentiation-of-focal-indeterminate-marrow-abnormalities-with-multiparametric-mri
#5
Jun Seung Baik, Joon-Yong Jung, Won-Hee Jee, Chang-Woo Chun, Sun Ki Kim, Seung Han Shin, Yang Guk Chung, Chan-Kwon Jung, Stephan Kannengiesser, YoHan Sohn
PURPOSE: To explore magnetic resonance imaging (MRI) parameters from intravoxel incoherent motion diffusion-weighted imaging (IVIM-DWI), multiecho Dixon imaging (ME-Dixon), and dynamic contrast-enhanced imaging (DCE) for differentiating focal indeterminate marrow abnormalities MATERIALS AND METHODS: Forty-two patients with 14 benign and 28 malignant focal marrow abnormalities were included. The following were independently analyzed by two readers: signal intensity (SI), contour, and margin on conventional MR images; SI on b-800 images (SIb-800 ), apparent diffusion coefficient (ADC), IVIM parameters (Dslow, Dfast , and f), fat fraction (Ff), and DCE parameters (time-to-signal intensity curve pattern, iAUC, K(trans) , kep , and ve )...
November 9, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27859637/assessing-clinically-significant-prostate-cancer-diagnostic-properties-of-multiparametric-magnetic-resonance-imaging-compared-to-three-dimensional-transperineal-template-mapping-histopathology
#6
Matvey Tsivian, Rajan T Gupta, Efrat Tsivian, Peter Qi, Melissa H Mendez, Michael R Abern, Kae Jack Tay, Thomas J Polascik
OBJECTIVE: To evaluate the diagnostic properties of multiparametric magnetic resonance imaging in the detection, localization and characterization of prostate cancer using three-dimensional transperineal template mapping biopsy histopathology as the comparator. METHODS: A retrospective analysis of patients undergoing prostate multiparametric magnetic resonance imaging followed by three-dimensional transperineal template mapping biopsy was carried out. For imaging and pathology data, the prostate was divided in octants with the urethra being the midline...
November 8, 2016: International Journal of Urology: Official Journal of the Japanese Urological Association
https://www.readbyqxmd.com/read/27858090/dramatic-increase-in-the-utilization-of-multiparametric-magnetic-resonance-imaging-for-detection-and-management-of-prostate-cancer
#7
Daniel T Oberlin, David D Casalino, Frank H Miller, Joshua J Meeks
PURPOSE: Multiparametric MRI (mpMRI) of the prostate is an evolving technology that provides functional information of the prostate that helps distinguish benign from malignant lesions. We hypothesized that mpMRI is rapidly adopted in the US to fill the unmet need for a non-invasive, accurate screening tool. The aim of this study is to assess the increasing utilization of mpMRI for the diagnosis and management of prostate cancer. METHODS: We conducted a retrospective review of an institutional clinical data repository of four million patients...
November 17, 2016: Abdominal Radiology
https://www.readbyqxmd.com/read/27857457/multiparametric-3t-mri-evaluation-of-hereditary-spastic-paraplegia-a-case-report
#8
Sonam Priya, Naznin Siddique, Ruchira Das, Archana Singh
Hereditary spastic paraplegia (HSP) is a rare heterogeneous group of familial neurodegenerative disorders characterized by degeneration of the corticospinal tracts and posterior column of the spinal cord. Previously described radiological findings included nonspecific brain abnormalities such as brain atrophy and white matter lesions, as well as atrophy of the corpus callosum and spinal cord. Magnetic resonance spectroscopy may reveal reduced concentrations of normal brain metabolites and elevated levels of myoinositol...
July 2016: Indian Journal of Radiology & Imaging
https://www.readbyqxmd.com/read/27856204/are-dynamic-contrast-enhanced-images-necessary-for-prostate-cancer-detection-on-multiparametric-magnetic-resonance-imaging
#9
Thaís Caldara Mussi, Tatiana Martins, Rodrigo Gobbo Garcia, Renee Zon Filippi, Gustavo Caserta Lemos, Ronaldo Hueb Baroni
BACKGROUND: To compare the results of magnetic resonance imaging (MRI) with and without contrast-enhanced sequences for the detection of clinically significant prostate cancer. The value of contrast in the MRI protocol for the detection of prostate tumors has been discussed in previous studies. MATERIALS AND METHODS: We performed an institutional review board-approved, retrospective study of patients who had undergone prostate MRI followed by fusion biopsy during a 16-month period...
October 18, 2016: Clinical Genitourinary Cancer
https://www.readbyqxmd.com/read/27842676/biparametric-3t-magentic-resonance-imaging-for-prostatic-cancer-detection-in-a-biopsy-na%C3%A3-ve-patient-population-a-further-improvement-of-pi-rads-v2
#10
Arnaldo Stanzione, Massimo Imbriaco, Sirio Cocozza, Ferdinando Fusco, Giovanni Rusconi, Carmela Nappi, Vincenzo Mirone, Francesco Mangiapia, Arturo Brunetti, Alfonso Ragozzino, Nicola Longo
OBJECTIVES: To prospectively determine the diagnostic accuracy of a biparametric 3T magnetic resonance imaging protocol (BP-MRI) for prostatic cancer detection, compared to a multiparametric MRI protocol (MP-MRI), in a biopsy naïve patient population. METHODS: Eighty-two untreated patients (mean age 65±7.6years) with clinical suspicion of prostate cancer and/or altered prostate-specific antigen (PSA) levels underwent a MP-MRI, including T2-weighted imaging, diffusion-weighted imaging (with the correspondent apparent diffusion coefficient maps) and dynamic contrast enhanced sequence, followed by prostate biopsy...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27842672/can-multiparametric-mri-replace-roach-equations-in-staging-prostate-cancer-before-external-beam-radiation-therapy
#11
Rossano Girometti, Marco Andrea Signor, Martina Pancot, Lorenzo Cereser, Chiara Zuiani
PURPOSE: To investigate the agreement between Roach equations (RE) and multiparametric magnetic resonance imaging (mpMRI) in assessing the T-stage of prostate cancer (PCa). MATERIALS AND METHODS: Seventy-three patients with biopsy-proven PCa and previous RE assessment prospectively underwent mpMRI on a 3.0T magnet before external beam radiation therapy (EBRT). Using Cohen's kappa statistic, we assessed the agreement between RE and mpMRI in defining the T-stage (≥T3 vs...
December 2016: European Journal of Radiology
https://www.readbyqxmd.com/read/27825433/advancement-of-mr-and-pet-mr-in-prostate-cancer
#12
REVIEW
Liza Lindenberg, Mark Ahlman, Baris Turkbey, Esther Mena, Peter Choyke
Multiparametric magnetic resonance (mpMRI) imaging has assumed a larger role in the diagnosis and management of prostate cancer. The current method of detecting prostate cancer relies on blind systematic biopsy, guided only by transrectal ultrasound that generally directs the needle biopsy to sextants of the prostate rather than specific lesions. MpMRI is playing an increasing role in the detection of primary cancer as it can visualize cancers and direct biopsies. However, even mpMRI is inherently nonspecific and numerous biopsies performed under MR guidance prove to be negative...
November 2016: Seminars in Nuclear Medicine
https://www.readbyqxmd.com/read/27819636/the-importance-of-preoperative-stadialization-of-rectal-cancer-using-multiparametric-mri-a-systematic-review
#13
Ferdinand Bauer
A correct preoperative stadialization of rectal carcinoma has a direct influence upon its therapeutic strategy, resulting in a significant improvement of the survival rate and life quality after the treatment. The therapeutic strategy refers to the option of undergoing or not preoperative radiochemotherapy before the total mesorectal excision (TME). The technical advances in the magnetic resonance domain makes possible the multiparametric examinations (mp MRI) with medical equipments (3T models are common) good enough to obtain images having an excellent quality, which allow a correct diagnosis of the local tumour spread...
2016: Chirurgia
https://www.readbyqxmd.com/read/27816875/differentiation-of-recurrent-spinal-ependymoma-from-postradiation-treatment-necrosis-through-multiparametric-pet-mr-and-perfusion-mri
#14
Mojgan Hojjati, Vasant Garg, Chaitra A Badve, Salim E Abboud, Andrew E Sloan, Leo J Wolansky
A 67-year-old male presented with papilledema and back pain localized to the T10 level. Initial workup revealed multifocal spinal ependymoma which was resected and treated with external beam radiotherapy. Nine years after treatment, the patient had a relapse of back pain, and MRI was inconclusive in distinguishing posttreatment radiation necrosis from recurrent tumor. We present the first described report with the utilization of multiparametric positron emission tomography-magnetic resonance imaging and perfusion MRI to distinguish recurrent spinal ependymoma from radiation necrosis...
September 13, 2016: Clinical Imaging
https://www.readbyqxmd.com/read/27805423/the-potential-of-multiparametric-mri-of-the-breast
#15
Katja Pinker, Thomas H Helbich, Elizabeth A Morris
Magnetic resonance imaging (MRI) is an essential tool in breast imaging, with multiple established indications. Dynamic contrast-enhanced MRI (DCE-MRI) is the backbone of any breast MRI protocol and has an excellent sensitivity and good specificity for breast cancer diagnosis. DCE-MRI provides high-resolution morphological information, as well as some functional information about neo-angiogenesis as a tumour-specific feature. To overcome limitations in specificity, several other functional MRI parameters have been investigated and the application of these combined parameters is defined as multiparametric MRI (mpMRI) of the breast...
November 2, 2016: British Journal of Radiology
https://www.readbyqxmd.com/read/27800062/multiparametric-magnetic-resonance-imaging-for-pre-treatment-local-staging-of-prostate-cancer-a-cancer-care-ontario-clinical-practice-guideline
#16
Jennifer Salerno, Antonio Finelli, Chris Morash, Scott C Morgan, Nicholas Power, Nichola Schieda, Masoom A Haider
INTRODUCTION: The utility of T2-weighted magnetic resonance imaging (MRI) in the local staging of prostate cancer is controversial. Due to the success of multiparametric MRI in cancer localization, there is renewed interested in MRI (± functional sequences) for local staging. Guidance on pre-treatment local staging of prostate cancer by MRI was developed using systematic review methodology and expert consultation. METHODS: MEDLINE, EMBASE, Cochrane Database of Systematic Reviews, and other databases were searched to identify studies comparing: (1) MRI staging vs...
September 2016: Canadian Urological Association Journal, Journal de L'Association des Urologues du Canada
https://www.readbyqxmd.com/read/27799572/utility-of-multiparametric-mri-in-caesarean-section-scar-characterization-and-preoperative-prediction-of-scar-dehiscence-a-prospective-study
#17
Ishan Kumar, Ashish Verma, Manjari Matah, Gayatri Satpathy
BACKGROUND: Post-Caesarean uterine scar rupture during vaginal birth after Caesarean section (VBAC) is a potentially life-threatening complication. Prediction of scar dehiscence and scar rupture is vital in treatment planning and selecting candidates of trial of labor after a Caesarean section (CS). PURPOSE: To assess the accuracy of magnetic resonance imaging (MRI) for evaluation of post-Caesarean uterine scar and to predict scar dehiscence during repeat CS. MATERIAL AND METHODS: Thirty patients with a history of at least one previous CS underwent pelvic MRI for assessment of uterine scar during a subsequent gestation, all of whom underwent lower segment Caesarean section (LSCS) subsequently due to one of the established indications of CSs...
October 31, 2016: Acta Radiologica
https://www.readbyqxmd.com/read/27785560/multiparametric-magnetic-resonance-imaging-for-prostate-cancer-a-comparative-study-including-radical-prostatectomy-specimens
#18
Liam Toner, Nathan Papa, Marlon Perera, Nikolas Katelaris, Mahesha Weerakoon, Kwang Chin, Laurence Harewood, Damien M Bolton, Nathan Lawrentschuk
PURPOSE: To evaluate the diagnostic and staging ability of multiparametric MRI (mpMRI) compared to radical prostatectomy (RP) specimens after dissemination of this technology to several centres. mpMRI is an evolving technique aiming to improve upon the diagnostic sensitivity of prostate biopsy for the diagnosis of prostate cancer. Differences in interpretation, expertise and application of mpMRI are responsible for the range of reported results. METHODS: This retrospective clinical study was conducted with consecutive patients through an electronic database of tertiary hospitals and adjacent private urology practices in Australia...
October 26, 2016: World Journal of Urology
https://www.readbyqxmd.com/read/27783444/multiparametric-mr-diffusion-weighted-imaging-for-monitoring-the-ultra-early-treatment-effect-of-sorafenib-in-human-hepatocellular-carcinoma-xenografts
#19
Xin Chen, Zelan Ma, Yanqi Huang, Lan He, Cuishan Liang, Changzheng Shi, Zhongping Zhang, Changhong Liang, Zaiyi Liu
PURPOSE: To investigate the value of multiparametric magnetic resonance imaging (MRI) diffusion-weighted imaging (DWI) for monitoring the ultra-early (within 24 hours) treatment effect of sorafenib in human hepatocellular carcinoma (HCC) xenografts. MATERIALS AND METHODS: With institutional Animal Care and Use Committee approval, 16 BALB/c nude mice bearing subcutaneous HCC xenografts underwent serial Gaussian and non-Gaussian DWI at baseline and 1, 3, 6, 12, and 24 hours posttreatment using a 1...
October 26, 2016: Journal of Magnetic Resonance Imaging: JMRI
https://www.readbyqxmd.com/read/27783436/role-of-pi-radsv2-with-multiparametric-mri-in-determining-who-needs-active-surveillance-or-definitive-treatment-according-to-prias
#20
Jung Jae Park, Byung Kwan Park
PURPOSE: To evaluate the role of Prostate Imaging Reporting and Data System v. 2 (PI-RADSv2) in triaging patients with prostate cancer according to Prostate Cancer Research International: Active Surveillance (PRIAS). MATERIALS AND METHODS: Between January 2012 and December 2014, 456 patients with biopsy-proven cancer underwent multiparametric 3T magnetic resonance imaging (MRI) using T2 -weighted, diffusion-weighted, and dynamic contrast-enhanced MRI sequences, and then radical prostatectomy...
October 26, 2016: Journal of Magnetic Resonance Imaging: JMRI
keyword
keyword
101588
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"