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Prostate cancer and ultrasound

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https://www.readbyqxmd.com/read/27913213/enhanced-efficacy-of-combination-heat-shock-targeted-polymer-therapeutics-with-high-intensity-focused-ultrasound
#1
Nick Frazier, Allison Payne, Christopher Dillon, Nithya Subrahmanyam, Hamidreza Ghandehari
Combination of polymer therapeutics and hyperthermia has been shown to enhance accumulation in selectively heated tumor tissue. The additional use of heat shock (HS)-targeting towards tumor tissues can further enhance accumulation and retention, and improve therapeutic outcomes. In this work, high intensity focused ultrasound (HIFU) was used to generate hyperthermia in prostate tumor tissue. Upregulation of the cell surface HS receptor glucose regulated protein 78kDa (GRP78) was observed after treatment with HIFU hyperthermia which was then targeted by specific HS-targeting peptides...
November 29, 2016: Nanomedicine: Nanotechnology, Biology, and Medicine
https://www.readbyqxmd.com/read/27908182/prostate-deformation-from-inflatable-rectal-probe-cover-and-dosimetric-effects-in-prostate-seed-implant-brachytherapy
#2
Jun Lian, Yeqin Shao, Larry D Potter, Ronald C Chen, Jordan A Holmes, Eleanor A Pryser, Jie Shen, Dinggang Shen, Andrew Z Wang
PURPOSE: Prostate brachytherapy is an important treatment technique for patients with localized prostate cancer. An inflatable rectal ultrasound probe cover is frequently utilized during the procedure to adjust for unfavorable prostate position relative to the implant grid. However, the inflated cover causes prostate deformation, which is not accounted for during dosimetric planning. Most of the therapeutic dose is delivered after the procedure when the prostate and surrounding organs-at-risk are less deformed...
December 2016: Medical Physics
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/27904624/application-of-transrectal-ultrasound-guided-repeat-needle-biopsy-in-the-diagnosis-of-prostate-cancer-in-chinese-population-a-retrospective-study
#4
Yi Wang, Xizhi Wang, Jiang Yu, Jun Ouyang, Weidong Shen, Yibin Zhou, Jianquan Hou, Duangai Wen, Jinxian Pu, Yuxi Shan, Boxin Xue
BACKGROUND: Transrectal ultrasound-guided repeat needle biopsy (TUGRNB) is widely used for diagnosis of prostate cancer (PCa). However, significance of TUGRNB in Chinese population was rarely reported. A retrospective study was conducted to evaluate the significance of TUGRNB applied in prediction of PCa in Chinese population. MATERIALS AND METHODS: A total of 960 from January 2009 to December 2012 were included. Repeat needle biopsy rate and PCa positive detection rate were evaluated...
2016: Journal of Research in Medical Sciences: the Official Journal of Isfahan University of Medical Sciences
https://www.readbyqxmd.com/read/27903809/the-bimanual-ovarian-palpation-examination-in-the-prostate-lung-colorectal-and-ovarian-cancer-screening-trial-performance-and-complications
#5
Maryam Doroudi, Barnett S Kramer, Paul F Pinsky
OBJECTIVE: To provide evidence about the performance characteristics and consequences of bimanual ovarian palpation. SETTING AND METHODS: The Prostate, Lung, Colorectal and Ovarian cancer screening trial randomized 154,900 individuals to either an intervention or control arm. Enrolled eligible participants were aged 55-74, had no history of trial cancers, and no current treatment for cancer. Intervention arm women received CA-125 tests and transvaginal ultrasound...
November 30, 2016: Journal of Medical Screening
https://www.readbyqxmd.com/read/27900453/incidence-grade-and-distribution-of-prostate-cancer-following-transperineal-template-guided-mapping-biopsy-in-patients-with-atypical-small-acinar-proliferation
#6
Gregory S Merrick, Robert W Galbreath, Abbey Bennett, Wayne M Butler, Edward Amamovich
PURPOSE: To evaluate the role of transperineal template-guided mapping biopsy (TTMB) in patients with atypical small acinar proliferation (ASAP) diagnosed via transrectal ultrasound-guided needle biopsy (TRUS). METHODS: In total, 132 consecutive patients with TRUS-diagnosed ASAP underwent TTMB by means of an anatomic-based technique with sampling of 24 biopsy regions. For each of the 24 regions, 1-3 biopsy cores were obtained (depending on prostate size). No patient underwent pre-biopsy MRI imaging...
November 29, 2016: World Journal of Urology
https://www.readbyqxmd.com/read/27895677/predictors-of-prostate-volume-reduction-following-neoadjuvant-cytoreductive-androgen-suppression
#7
Krishan R Jethwa, Keith M Furutani, Lance A Mynderse, Torrence M Wilson, Richard Choo, Bernard F King, Eric Bergstralh, Brian J Davis
PURPOSE: Limited duration cytoreductive neoadjuvant hormonal therapy (NHT) is used prior to definitive radiotherapeutic management of prostate cancer to decrease prostate volume. The purpose of this study is to examine the effect of NHT on prostate volume before permanent prostate brachytherapy (PPB), and determine associated predictive factors. MATERIAL AND METHODS: Between June 1998 and April 2012, a total of 1,110 patients underwent PPB and 207 patients underwent NHT...
October 2016: Journal of Contemporary Brachytherapy
https://www.readbyqxmd.com/read/27875218/entropy-of-ultrasound-contrast-agent-velocity-fields-for-angiogenesis-imaging-in-prostate-cancer
#8
Ruud van Sloun, Libertario Demi, Arnoud Postema, Jean de la Rosette, Hessel Wijkstra, Massimo Mischi
Prostate cancer care can benefit from accurate and cost-efficient imaging modalities that are able to reveal prognostic indicators for cancer. Angiogenesis is known to play a central role in the growth of tumors towards a metastatic or a lethal phenotype.With the aim of localizing angiogenic activity in a noninvasive manner, Dynamic Contrast Enhanced Ultrasound (DCEUS) has been widely used. Usually, the passage of ultrasound contrast agents thought the organ of interest is analyzed for the assessment of tissue perfusion...
November 16, 2016: IEEE Transactions on Medical Imaging
https://www.readbyqxmd.com/read/27867812/comparisons-of-oncological-and-functional-outcomes-among-radical-retropubic-prostatectomy-high-dose-rate-brachytherapy-cryoablation-and-high-intensity-focused-ultrasound-for-localized-prostate-cancer
#9
Po Hui Chiang, Yi Yang Liu
PURPOSE: To conduct a retrospective, single institutional and comparative study for radical retropubic prostatectomy (RRP), high dose rate brachytherapy (HDRBT), cryoablation and high-intensity focused ultrasound (HIFU) in localized prostate cancer with respect to oncological and functional outcomes. METHODS: We reviewed 97, 161, 114 and 120 patients of RRP, HDRBT, cryoablation and HIFU respectively for localized prostate cancer from May 2008 to December 2013. PSA biochemical recurrence, salvage treatment-free rate, metastasis-free rate, and biochemical recurrence-free survival were analyzed for oncological outcomes...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27864107/should-hypoechoic-lesions-on-trus-be-sampled-during-mri-targeted-prostate-biopsy
#10
Nabeel A Shakir, M Minhaj Siddiqui, Arvin K George, Michael Kongnyuy, Richard Ho, Michele Fascelli, Maria J Merino, Baris Turkbey, Peter L Choyke, Bradford J Wood, Peter A Pinto
OBJECTIVES: To determine whether supplemental biopsy of hypoechoic ultrasound lesions (HUL) incidentally found during MRI-transrectal ultrasound (TRUS) fusion-targeted prostate biopsy results in improved prostate cancer (PCa) detection. METHODS: Patients underwent MRI-TRUS targeted biopsy as part of an ongoing prospective trial from August 2007 to February 2015. For men with HUL, the biopsy pathology of HUL and MRI lesions was classified according to the updated 2014 International Society of Urological Pathology (ISUP) grading system...
November 15, 2016: Urology
https://www.readbyqxmd.com/read/27862869/multicentre-evaluation-of-target-and-systematic-biopsies-using-magnetic-resonance-and-ultrasound-image-fusion-guided-transperineal-prostate-biopsy-in-patients-with-a-previous-negative-biopsy
#11
N L Hansen, C Kesch, T Barrett, B Koo, J P Radtke, D Bonekamp, H P Schlemmer, A Y Warren, K Wieczorek, M Hohenfellner, C Kastner, B Hadaschik
OBJECTIVES: To evaluate the detection rates of targeted and systematic biopsies in magnetic resonance (MRI) and transrectal ultrasound (US) image-fusion transperineal prostate biopsy for patients with previous benign transrectal US guided biopsies in two high-volume centres. PATIENTS AND METHODS: Two centre, prospective outcome study of 487 patients with previous benign biopsies that underwent transperineal MRI/US fusion-guided target and systematic saturation biopsy from 2012 to 2015...
November 10, 2016: BJU International
https://www.readbyqxmd.com/read/27860475/-new-diagnostic-imaging-technique-shear-wave-elastography
#12
M Zemanová
Shear wave elastography (SWE) is a new non-invasive diagnostic imaging technique, that maps the elastic properties of tissues. Nowadays this modality develops increasingly in medicine across its disciplines and opens a new era of high-quality ultrasound examination because it increases the specificity and thus improves diagnostic assurance. This method is similar to manual palpation, shows elastic properties of biological tissues and provides a kind of reconstruction of the internal structure of soft tissues based on measurement of the response of tissue compression...
2016: Ceská a Slovenská Oftalmologie
https://www.readbyqxmd.com/read/27858908/predictive-value-of-neutrophil-to-lymphocyte-ratio-in-diagnosis-of-prostate-cancer-among-men-who-underwent-template-guided-prostate-biopsy-a-strobe-compliant-study
#13
Tian-Bao Huang, Shi-Yu Mao, Sheng-Ming Lu, Jun-Jie Yu, Yang Luan, Xiao Gu, Hao Liu, Guang-Chen Zhou, Xue-Fei Ding
To evaluate the predictive value of neutrophil-to-lymphocyte ratio (NLR) in diagnosis of prostate cancer (PCa). Data of 662 patients who underwent prostate biopsy from January 2012 to June 2016 were retrospectively reviewed. The receiver operating characteristic-derived area under the curve analyses were performed to assess the predictive accuracy. Simultaneously, Youden's index was calculated to determine the optimal NLR cutoff. Furthermore, univariate and multivariate logistic regression analyses were performed to determine the association between NLR value and PCa detection...
November 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27852387/-prostate-biopsy-results-and-clinicopathological-characteristics-of-the-55-years-or-younger-patients
#14
G Song, D Fang, G J Ji, W Yu, C L Zhao, X S Li, G Z Shan, S Q Li, Q He, Z C Xin, X Y Wang, L Q Zhou
Objective: To explore the clinical features, biopsy results and risk factors of patients underwent prostate biopsy with age≤55, and to help make the proper treatment strategies of this cohort of patients. Methods: The data of patients with age≤55 underwent prostate biopsy between Jan 2011 and Nov 2013 was retrospectively reviewed. Clinical factors including prostate-specific antigen, digital rectal examination, ultrasonography and magnetic resonance imaging were recorded. Biopsy positive results were defined as the presence of prostate cancer and high-grade prostate cancer (Gleason score≥7)...
November 1, 2016: Zhonghua Yi Xue za Zhi [Chinese medical journal]
https://www.readbyqxmd.com/read/27847972/first-report-of-robot-assisted-transperineal-fusion-versus-off-target-biopsy-in-patients-undergoing-repeat-prostate-biopsy
#15
S Kaufmann, J Mischinger, B Amend, S Rausch, M Adam, M Scharpf, F Fend, U Kramer, M Notohamiprodjo, K Nikolaou, A Stenzl, J Bedke, S Kruck
PURPOSE: To clarify the value of targeted versus off-target biopsies in men with a suspicion of prostate cancer (PC) and a visible lesion in multi-parametric magnetic resonance imaging (mpMRI) using transperineal robot-assisted biopsy. METHODS: Fifty-five consecutive men with one non-palpable suspicious lesion in mpMRI after negative 12-core transrectal ultrasound-guided biopsy were enrolled in 2014-2015. Lesions were scored using the Prostate Imaging Reporting and Data System...
November 15, 2016: World Journal of Urology
https://www.readbyqxmd.com/read/27845694/neutrophil-to-lymphocyte-and-neutrophil-to-monocyte-rates-in-the-decision-for-a-prostate-re-biopsy-in-patients-with-a-previous-benign-pathology-and-consistently-2-5-10-ng-ml-psa-value
#16
Yasin Ceylan, Bülent Günlüsoy, Tansu Degirmenci, Deniz Bolat, Zafer Kozacioglu, Enver Vardar, Yusuf Kadir Topçu, Salih Polat
OBJECTIVES: In this study we compared neutrophil-to-lymphocyte ratio (NLR) and neutrophilto- monocyte ratio(NMR) between patients with prostate cancer after first transrectal ultrasound (TRUS)- guided biopsy and patients with benign prostate hyperplasia(BPH) after second TRUS-guided biyopsy. METHODS: A total of 224 patients who underwent multi (≥12)-core TRUS -guided biopsy at our clinic for elevated PSA or abnormal digital rectal examination in between January 2008 and March 2015 were retrospectively analyzed...
November 2016: Archivos Españoles de Urología
https://www.readbyqxmd.com/read/27845218/determination-of-the-role-of-negative-magnetic-resonance-imaging-of-the-prostate-in-clinical-practice-is-biopsy-is-still-necessary
#17
Robert S Wang, Eric H Kim, Joel M Vetter, Kathryn J Fowler, Anup S Shetty, Aaron J Mintz, Niraj G Badhiwala, Robert L Grubb, Gerald L Andriole
OBJECTIVES: To assess the negative predictive value (NPV) of multi-parametric MRI (mpMRI) for detection of prostate cancer (PCa) in routine clinical practice, and to identify characteristics of patients for whom mpMRI fails to detect high-grade (Gleason ≥7) disease. METHODS: We reviewed our prospectively maintained database of consecutive men who received prostate mpMRI at our institution, interpreted by a clinical practice of academic radiologists. Between January 2012 and December 2015, 84 men without any MR suspicious regions (MSRs) according to prior institutional classification, or with PI-RADS 1-2 lesions according to the PI-RADS system, underwent standard template transrectal ultrasound-guided (TRUS) prostate biopsy...
November 11, 2016: Urology
https://www.readbyqxmd.com/read/27830373/precision-of-mri-ultrasound-fusion-biopsy-in-prostate-cancer-diagnosis-an-ex-vivo-comparison-of-alternative-biopsy-techniques-on-prostate-phantoms
#18
N Westhoff, F P Siegel, D Hausmann, M Polednik, J von Hardenberg, M S Michel, M Ritter
PURPOSE: Comparing the accuracy of MRI/ultrasound-guided target-biopsy by transrectal biopsy (TRB) with elastic versus rigid image fusion versus transperineal biopsy (TPB) with rigid image fusion in a standardized setting. METHODS: Target-biopsy of six differently sized and located lesions was performed on customized CIRS 070L prostate phantoms. Lesions were only MRI-visible. After prior MRI for lesion location, one targeted biopsy per lesion was obtained by TRB with elastic image fusion with Artemis™ (Eigen, USA), TRB with rigid image fusion with real-time virtual sonography (Hitachi, Japan) and TPB with rigid image fusion with a brachytherapy approach (Elekta, Sweden), each on a phantom of 50, 100 and 150 ml prostate volume...
November 9, 2016: World Journal of Urology
https://www.readbyqxmd.com/read/27825433/advancement-of-mr-and-pet-mr-in-prostate-cancer
#19
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/27825386/initial-results-for-patient-setup-verification-using-transperineal-ultrasound-and-cone-beam-ct-in-external-beam-radiation-therapy-of-prostate-cancer
#20
Anne Richter, Bülent Polat, Ingulf Lawrenz, Stefan Weick, Otto Sauer, Michael Flentje, Frederick Mantel
BACKGROUND: Evaluation of set up error detection by a transperineal ultrasound in comparison with a cone beam CT (CBCT) based system in external beam radiation therapy (EBRT) of prostate cancer. METHODS: Setup verification was performed with transperineal ultrasound (TPUS) and CBCT for 10 patients treated with EBRT for prostate cancer. In total, 150 ultrasound and CBCT scans were acquired in rapid succession and analyzed for setup errors. The deviation between setup errors of the two modalities was evaluated separately for each dimension...
November 8, 2016: Radiation Oncology
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