keyword
MENU ▼
Read by QxMD icon Read
search

Prostate MRI

keyword
https://www.readbyqxmd.com/read/28635568/additional-value-of-magnetic-resonance-targeted-biopsies-to-standard-transrectal-ultrasound-guided-biopsies-for-detection-of-clinically-significant-prostate-cancer
#1
Catrin von Below, Cecilia Wassberg, Mona Norberg, Anna Tolf, Joel Kullberg, Sam Ladjevardi, Michael Häggman, Anna Bill Axelson, Håkan Ahlström
OBJECTIVE: The aim of this study was to evaluate the additional value of magnetic resonance imaging-targeted biopsy (MRI-TB) to standard transrectal ultrasound-guided biopsy (SB) for detection of clinically significant prostate cancer (PCa). An additional aim was to compare the biopsy results to MRI evaluation using a Likert scale. MATERIALS AND METHODS: Patients with newly diagnosed localized PCa (n = 53) by clinical routine SB were prospectively included. The majority of the patients were scheduled for curative therapy before enrollment...
February 24, 2017: Scandinavian Journal of Urology
https://www.readbyqxmd.com/read/28632693/extraosseous-extension-of-aggressive-vertebral-hemangioma-as-a-potential-pitfall-on-68ga-psma-pet-ct
#2
Stephan Probst, Franck Bladou, Gad Abikhzer
A 74-year-old man with newly diagnosed prostate cancer underwent Ga-PSMA PET/CT, which demonstrated intense uptake in and adjacent the L2 vertebral body. Subsequent MRI of the lumbar spine showed an aggressive L2 hemangioma with adjacent soft tissue extension. There was congruence of the intraosseous and extraosseous components of the hemangioma and the PSMA PET uptake. This is a rare but important potential pitfall in Ga-PSMA PET/CT-a soft tissue lesion with intense tracer uptake related not to a nodal metastasis of prostate cancer but to extraosseous extension of an aggressive vertebral body hemangioma...
June 19, 2017: Clinical Nuclear Medicine
https://www.readbyqxmd.com/read/28632688/high-quality-3-dimensional-1h-magnetic-resonance-spectroscopic-imaging-of-the-prostate-without-endorectal-receive-coil-using-a-semi-laser-sequence
#3
Nassim Tayari, Isabell K Steinseifer, Kirsten M Selnæs, Tone F Bathen, Marnix C Maas, Arend Heerschap
OBJECTIVES: Inclusion of 3-dimensional H magnetic resonance spectroscopic imaging (3D-H-MRSI) in routine multiparametric MRI of the prostate requires good quality spectra and easy interpretable metabolite maps of the whole organ obtained without endorectal coil in clinically feasible acquisition times. We evaluated if a semi-LASER pulse sequence with gradient offset independent adiabaticity refocusing pulses (GOIA-sLASER) for volume selection can meet these requirements. MATERIALS AND METHODS: Thirteen patients with suspicion of prostate cancer and 1 patient known to have prostate cancer were examined at 3 T with a multichannel body-receive coil...
June 19, 2017: Investigative Radiology
https://www.readbyqxmd.com/read/28630883/detection-of-prostate-cancer-in-multiparametric-mri-using-random-forest-with-instance-weighting
#4
Nathan Lay, Yohannes Tsehay, Matthew D Greer, Baris Turkbey, Jin Tae Kwak, Peter L Choyke, Peter Pinto, Bradford J Wood, Ronald M Summers
A prostate computer-aided diagnosis (CAD) based on random forest to detect prostate cancer using a combination of spatial, intensity, and texture features extracted from three sequences, T2W, ADC, and B2000 images, is proposed. The random forest training considers instance-level weighting for equal treatment of small and large cancerous lesions as well as small and large prostate backgrounds. Two other approaches, based on an AutoContext pipeline intended to make better use of sequence-specific patterns, were considered...
April 2017: Journal of Medical Imaging
https://www.readbyqxmd.com/read/28630592/the-role-of-different-pi-rads-versions-in-prostate-multiparametric-magnetic-resonance-tomography-assessment
#5
Paulius Aliukonis, Tadas Letauta, Rūta Briedienė, Ieva Naruševičiūtė, Simona Letautienė
Background. Standardised Prostate Imaging Reporting and Data System (PI-RADS) guidelines for the assessment of prostate alterations were designed for the assessment of prostate pathology. Published by the ESUR in 2012, PI-RADS v1 was based on the total score of different MRI sequences with subsequent calculation. PI-RADS v2 was published by the American College of Radiology in 2015 and featured different assessment criteria for prostate peripheral and transitory zones. Aim. To assess the correlations of PI-RADS v1 and PI-RADS v2 with Gleason score values and to define their predictive values of the diagnosis of prostate cancer...
2017: Acta medica Lituanica
https://www.readbyqxmd.com/read/28629785/-interest-using-3d-ultrasound-and-mri-fusion-biopsy-for-prostate-cancer-detection
#6
A Marien, A De Castro Abreu, I Gill, A Villers, O Ukimura
INTRODUCTION: The strategic therapy for prostate cancer depends on histo-pronostics data, which could be upgraded by obtaining targeted biopsies (TB) with MRI (magnetic resonance imagery) fusion 3D ultrasound. OBJECTIVES: To compare diagnostic yield of image fusion guided prostate biopsy using image fusion of multi-parametric MRI (mpMRI) with 3D-TRUS. MATERIALS AND METHODS: Between January 2010 and April 2013, 179 consecutive patients underwent outpatient TRUS biopsy using the real-time 3D TRUS tracking system (Urostation™)...
June 16, 2017: Progrès en Urologie
https://www.readbyqxmd.com/read/28627396/prostate-mass-as-a-first-manifestation-of-myeloid-sarcoma-in-a-patient-with-an-occult-acute-myeloid-leukemia-a-case-report
#7
Natally Horvat, Pedro Sergio Brito Panizza, Frederico Perego Costa, Publio Cesar Cavalcanti Viana
Myeloid sarcoma (MS) with either primary or secondary prostate involvement is extremely rare. Its diagnostic is particularly challenging when prostate lesion precedes the systemic manifestation of a myeloproliferative disorder. We report such a case in a 44-year-old man with a prostate mass as a first manifestation of myeloid sarcoma associated with acute myeloid leukemia (AML). The diagnosis of lymphoproliferative disorder was suspected in the prostate magnetic resonance imaging (MRI) and MS was confirmed after transrectal ultrasound-guided prostate core biopsy...
June 13, 2017: Urology
https://www.readbyqxmd.com/read/28624849/the-accuracy-of-68-ga-psma-pet-ct-in-primary-lymph-node-staging-in-high-risk-prostate-cancer
#8
Can Öbek, Tünkut Doğanca, Emre Demirci, Meltem Ocak, Ali Rıza Kural, Asıf Yıldırım, Uğur Yücetaş, Çetin Demirdağ, Sarper M Erdoğan, Levent Kabasakal
PURPOSE: To assess the diagnostic accuracy of (68)Ga-PSMA PET in predicting lymph node (LN) metastases in primary N staging in high-risk and very high-risk nonmetastatic prostate cancer in comparison with morphological imaging. METHODS: This was a multicentre trial of the Society of Urologic Oncology in Turkey in conjunction with the Nuclear Medicine Department of Cerrahpasa School of Medicine, Istanbul University. Patients were accrued from eight centres. Patients with high-risk and very high-risk disease scheduled to undergo surgical treatment with extended LN dissection between July 2014 and October 2015 were included...
June 18, 2017: European Journal of Nuclear Medicine and Molecular Imaging
https://www.readbyqxmd.com/read/28619734/-68-ga-psma11-pet-ct-in-newly-diagnosed-carcinoma-of-the-prostate-correlation-of-intraprostatic-psma-uptake-with-several-clinical-parameters
#9
Stefan A Koerber, Maximilian T Utzinger, Clemens Kratochwil, Claudia Kesch, Matthias Haefner, Sonja Katayama, Walter Mier, Andrei H Iagaru, Klaus Herfarth, Uwe Haberkorn, Juergen Debus, Frederik L Giesel
(68)Ga-prostate-specific membrane antigen (PSMA)-positron emission tomography (PET)/ computer tomography (CT) is a promising diagnostic tool for patients with prostate cancer. Our study evaluates standardized uptake values (SUV) in benign prostate tissue and malignant, intraprostatic tumor lesions and correlates results with several clinical parameters. Methods: One hundred and four men with newly diagnosed prostate carcinoma and no previous therapy were included in this study. Maximum SUV (SUVmax) was measured and correlated with biopsy findings and magnetic resonance imaging (MRI)...
June 15, 2017: Journal of Nuclear Medicine: Official Publication, Society of Nuclear Medicine
https://www.readbyqxmd.com/read/28618668/re-diagnostic-accuracy-of-multi-parametric-mri-and-trus-biopsy-in-prostate-cancer-promis-a-paired-validating-confirmatory-study
#10
Samir S Taneja
No abstract text is available yet for this article.
July 2017: Journal of Urology
https://www.readbyqxmd.com/read/28615794/deepinfer-open-source-deep-learning-deployment-toolkit-for-image-guided-therapy
#11
Alireza Mehrtash, Mehran Pesteie, Jorden Hetherington, Peter A Behringer, Tina Kapur, William M Wells, Robert Rohling, Andriy Fedorov, Purang Abolmaesumi
Deep learning models have outperformed some of the previous state-of-the-art approaches in medical image analysis. Instead of using hand-engineered features, deep models attempt to automatically extract hierarchical representations at multiple levels of abstraction from the data. Therefore, deep models are usually considered to be more flexible and robust solutions for image analysis problems compared to conventional computer vision models. They have demonstrated significant improvements in computer-aided diagnosis and automatic medical image analysis applied to such tasks as image segmentation, classification and registration...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28615793/classification-of-clinical-significance-of-mri-prostate-findings-using-3d-convolutional-neural-networks
#12
Alireza Mehrtash, Alireza Sedghi, Mohsen Ghafoorian, Mehdi Taghipour, Clare M Tempany, William M Wells, Tina Kapur, Parvin Mousavi, Purang Abolmaesumi, Andriy Fedorov
Prostate cancer (PCa) remains a leading cause of cancer mortality among American men. Multi-parametric magnetic resonance imaging (mpMRI) is widely used to assist with detection of PCa and characterization of its aggressiveness. Computer-aided diagnosis (CADx) of PCa in MRI can be used as clinical decision support system to aid radiologists in interpretation and reporting of mpMRI. We report on the development of a convolution neural network (CNN) model to support CADx in PCa based on the appearance of prostate tissue in mpMRI, conducted as part of the SPIE-AAPM-NCI PROSTATEx challenge...
February 11, 2017: Proceedings of SPIE
https://www.readbyqxmd.com/read/28609110/monitoring-tumor-volume-in-patients-with-prostate-cancer-undergoing-active-surveillance-is-mri-apparent-diffusion-coefficient-indicative-of-tumor-growth
#13
Veronica A Morgan, Christopher Parker, Alison MacDonald, Karen Thomas, Nandita M deSouza
OBJECTIVE: The purpose of this study was to measure longitudinal change in tumor volume of the dominant intraprostatic lesion and determine whether baseline apparent diffusion coefficient (ADC) and change in ADC are indicative of tumor growth in patients with prostate cancer undergoing active surveillance. SUBJECTS AND METHODS: The study group included 151 men (mean age, 68.1 ± 7.4 [SD] years; range, 50-83 years) undergoing active surveillance with 3D whole prostate, zonal, and tumor volumetric findings documented at endorectal MRI examinations performed at two time points (median interval, 1...
June 13, 2017: AJR. American Journal of Roentgenology
https://www.readbyqxmd.com/read/28608163/prostate-specific-membrane-antigen-pet-mri-validation-of-mr-textural-analysis-for-detection-of-transition-zone-prostate-cancer
#14
Anthony Bates, Kenneth Miles
OBJECTIVES: To validate MR textural analysis (MRTA) for detection of transition zone (TZ) prostate cancer through comparison with co-registered prostate-specific membrane antigen (PSMA) PET-MR. METHODS: Retrospective analysis was performed for 30 men who underwent simultaneous PSMA PET-MR imaging for staging of prostate cancer. Thirty texture features were derived from each manually contoured T2-weighted, transaxial, prostatic TZ using texture analysis software that applies a spatial band-pass filter and quantifies texture through histogram analysis...
June 12, 2017: European Radiology
https://www.readbyqxmd.com/read/28607878/targeted-prostate-biopsy-using-68-gallium-psma-pet-ct-for-image-guidance
#15
Demetrios N Simopoulos, Shyam Natarajan, Tonye A Jones, Wolfgang P Fendler, Anthony E Sisk, Leonard S Marks
Prostate specific membrane antigen (PSMA) scanning is a sensitive method of prostate cancer detection. In a 71 y.o. man with a PSA of 49 (6%F), 4 negative MRI studies and 6 negative biopsies over an 8 year interval, a (68)Ga-PSMA PET/CT scan showed a PSMA-avid spot in the prostate. Using image fusion technology, the lesion was target-biopsied and Gleason 3 + 4 = 7 (cancer core length of 12 mm) was identified. This case may herald a new application for PSMA scanning and prostate cancer imaging.
September 2017: Urology Case Reports
https://www.readbyqxmd.com/read/28601562/patterns-of-benign-prostate-hyperplasia-based-on-magnetic-resonance-imaging-are-correlated-with-lower-urinary-tract-symptoms-and-continence-in-men-undergoing-a-robot-assisted-radical-prostatectomy-for-prostate-cancer
#16
Nikolaos Grivas, Rosanne van der Roest, Corinne Tillier, Daan Schouten, Erik van Muilekom, Ivo Schoots, Henk van der Poel, Stijn Heijmink
OBJECTIVE: To investigate the association between benign prostatic hyperplasia (BPH) patterns, classified by magnetic resonance imaging (MRI), with lower urinary tract symptoms (LUTS) or continence, preoperatively and after robot-assisted laparoscopic radical prostatectomy (RARP). MATERIALS AND METHODS: This retrospective study included 49 prostate cancer patients, with prostate size >47 cm(3), who underwent an endorectal MRI followed by RARP. Five BPH patterns were identified according to Wasserman and additional prostate measurements were recorded...
June 7, 2017: Urology
https://www.readbyqxmd.com/read/28589399/prostate-biopsy-in-active-surveillance-protocols-immediate-re-biopsy-and-timing-of-subsequent-biopsies
#17
REVIEW
Jonathan H Wang, Tracy M Downs, E Jason Abel, Kyle A Richards, David F Jarrard
PURPOSE OF REVIEW: This manuscript reviews contemporary literature regarding prostate cancer active surveillance (AS) protocols as well as other tools that may guide the management of biopsy frequency and assess the possibility of progression in low-risk prostate cancer. RECENT FINDINGS: There is no consensus regarding the timing of surveillance biopsies; however, an immediate repeat biopsy within 12 months of diagnosis for patients considering AS confirms patients who have favorable risk disease yet also identifies patients who were undersampled initially...
July 2017: Current Urology Reports
https://www.readbyqxmd.com/read/28588732/trus-guided-transperineal-prostate-12-x-core-biopsy-with-template-for-the-diagnosis-of-prostate-cancer
#18
Gang Guo, Yong Xu, Xu Zhang
The objective of the present study was to explore the clinical value and safety of trans-rectal ultrasound (TRUS)-guided transperineal prostate 12+X core biopsy in the diagnosis of prostate cancer. Patients who received a TRUS-guided transperineal prostate biopsy for suspected prostate cancer at the General Hospital of The People's Liberation Army between September 2009 and May 2014 were retrospectively analyzed, this consisted of 1,300 patients. These patients were randomly divided into the 12+X core group or the standard 12-core group...
June 2017: Oncology Letters
https://www.readbyqxmd.com/read/28584167/severe-cushing-s-syndrome-due-to-small-cell-prostate-carcinoma-a-case-and-review-of-literature
#19
Marianne Elston, Veronica Crawford, Michael Swarbrick, Michael Dray, Michelle Head, John V Conaglen
Cushings syndrome (CS) due to ectopic adrenocorticotrophic hormone (ACTH) is associated with a variety of tumours most of which arise in the thorax or abdomen. Prostate carcinoma is a rare but important cause of rapidly progressive CS. To report a case of severe CS due to ACTH production from prostate neuroendocrine carcinoma and summarise previous published cases. A 71 year old man presented with profound hypokalaemia, oedema and new onset hypertension. He reported two weeks of weight gain, muscle weakness, labile mood and insomnia...
June 5, 2017: Endocrine Connections
https://www.readbyqxmd.com/read/28583633/magnetic-resonance-imaging-of-the-prostate-at-1-5-versus-3-0t-a-prospective-comparison-study-of-image-quality
#20
T Ullrich, M Quentin, C Oelers, F Dietzel, L M Sawicki, C Arsov, R Rabenalt, P Albers, G Antoch, D Blondin, H J Wittsack, L Schimmöller
OBJECTIVES: This study prospectively evaluates objective image quality (IQ), subjective IQ, and PI-RADS scoring of prostate MRI at 3.0T (3T) and 1.5T (1.5T) within the same patients. METHODS: Sixty-three consecutive patients (64±9years) were prospectively included in this non-inferiority trial, powered at 80% to demonstrate a ≤10% difference in signal-to-noise (SNR) and contrast-to-noise ratio (CNR) of T2-weighted and diffusion-weighted imaging (T2WI, DWI) at 1...
May 2017: European Journal of Radiology
keyword
keyword
7558
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"