نتایج جستجو برای: transrectal ultrasound
تعداد نتایج: 109720 فیلتر نتایج به سال:
PC detection requires a digital rectal exam and a Prostatic Specific Antigen screening. The diagnosis is confirmed by pathological analysis of systematic needle core biopsy. Transrectal ultrasound (TRUS) is currently used to guide this prostate sampling. In the 12pattern protocol, twelve different transrectal ultrasound-guided biopsies are routinely performed: 6 biopsies in each side of the pro...
OBJECTIVES To examine the feasibility of image-guided navigation using transrectal ultrasound (TRUS) to visualize the neurovascular bundle (NVB) during robot-assisted laparoscopic radical prostatectomy (RALP). The preservation of the NVB during radical prostatectomy improves the postoperative recovery of sexual potency. The accompanying blood vessels in the NVB can serve as a macroscopic landma...
OBJECTIVE To compare the efficacy and safety of intramuscular meperidine injection with periprostatic nerve block (PNB) during transrectal ultrasound-guided prostate biopsy. METHODS This study was carried out from July 2010 to June 2012 at the First Affiliated Hospital of Fujian Medical University, Fuzhou, Fujian, China. This controlled, double-blinded, randomized study included 186 patients....
This paper proposes a new semi-automatic segmentation method for the prostate on 3D transrectal ultrasound images (TRUS) by combining the region and classification information. We use a random walk algorithm to express the region information efficiently and flexibly because it can avoid segmentation leakage and shrinking bias. We further use the decision tree as the classifier to distinguish th...
MOTIVATION: Detection of prostate cancer during transrectal ultrasound-guided biopsy is challenging. The highly heterogeneous appearance cancer, presence ultrasound artefacts, and noise all contribute to these difficulties. Recent advancements in high-frequency imaging - micro-ultrasound have drastically increased the capability tissue at high resolution. Our aim investigate development a robus...
OBJECTIVE To evaluate the role of transperineal template prostate biopsies in men on active surveillance. PATIENTS AND METHODS In all, 101 men on active surveillance for prostate cancer underwent restaging transperineal template prostate biopsies at a single centre. Criteria for active surveillance were ≤75 years, Gleason ≤3+3, prostate-specific antigen (PSA) ≤15 ng/mL, clinical stage T1-2a a...
Introduction Prostate brachytherapy has been widely used for treating prostate cancer. Transrectal ultrasound (TRUS) is the primary imaging modality providing the guidance for brachytherapy. However, imaging and detection of the prostate with conventional B-mode TRUS still remains a challenging task due to the poor contrast between the prostate and surrounding tissues. Because prostate is a fir...
Introduction/Background* The aim of the study was to evaluate diagnostic accuracy ultrasound in preoperative assessment pelvic lymph nodes (LNs) cervical cancer patients. Methodology Patients were retrospectively included if they met following inclusion criteria: 1) histologically verified cancer; 2) examination performed by one three experienced sonographers (transvaginal or ...
INTRODUCTION Prostate cancer is usually diagnosed by transrectal ultrasound (TRUS) biopsy. Nevertheless, suspicious images are frequently not found. Imaging analysis studies aim to identify ultrasound patterns characteristic of apparently hidden conditions. MATERIAL AND METHODS We digitally recorded 288 TRUS ultrasound guided transrectal biopsies and extracted 3 static images from the punctur...
PURPOSE Transrectal ultrasound (TRUS) has been the gold standard of imaging for diagnosing prostate cancer for decades but is plagued by user error and undersampling. We aim to explore imaging modalities that are now being used in combination or alone for screening, diagnosis, and/or active surveillance of prostate cancer. METHODS A PubMed literature search was performed to include articles ...
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