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Ultrasonography

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https://www.readbyqxmd.com/read/27956733/metastatic-renal-cell-carcinoma-in-the-thyroid-gland-ultrasonographic-features-and-the-diagnostic-role-of-core-needle-biopsy
#1
Ok Kyu Song, Ja Seung Koo, Jin Young Kwak, Hee Jung Moon, Jung Hyun Yoon, Eun-Kyung Kim
Purpose: The aims of this study were to present the ultrasonographic (US) features of metastatic renal cell carcinoma (RCC) in the thyroid gland and to evaluate the diagnostic utility of fineneedle aspiration (FNA) and core needle biopsy (CNB). Methods: Eight patients with nine metastatic RCC nodules in the thyroid glands who were treated from January 2002 to March 2015 in a single tertiary hospital were consecutively selected and retrospectively reviewed. US features and clinical history were obtained from the institution's medical database...
November 9, 2016: Ultrasonography
https://www.readbyqxmd.com/read/27956732/current-role-of-transient-elastography-in-the-management-of-chronic-hepatitis-b-patients
#2
Jung Hwan Yu, Jung Il Lee
Liver fibrosis is an important prognostic factor for chronic hepatitis B (CHB), and accurate evaluation of the stage of liver fibrosis is crucial in establishing management strategies. While liver biopsy is still considered the gold standard for staging liver fibrosis or cirrhosis, transient elastography (TE), a noninvasive means of assessing liver fibrosis, has come to play an increasing role in this process. After extensive validation, TE is now regarded as a reliable surrogate maker for grading the severity of liver fibrosis in CHB patients...
October 26, 2016: Ultrasonography
https://www.readbyqxmd.com/read/27998053/ultrasonographic-findings-of-kikuchi-cervical-lymphadenopathy-in-children
#3
Ji Young Kim, Hyunju Lee, Bo La Yun
PURPOSE: The purpose of this study was to analyze the ultrasonographic (USG) findings of Kikuchi cervical lymphadenopathy in pediatric patients. METHODS: Between April 2007 and September 2016, 84 children (42 male and 42 female; mean±standard deviation age, 12.9±3.2 years; range, 5 to 18 years) confirmed with Kikuchi disease were enrolled. Clinical findings and USG findings of Kikuchi cervical lymphadenopathy were retrospectively reviewed. Localized symptoms, systemic symptoms, and laboratory findings including the white blood cell count, erythrocyte sedimentation rate (ESR), and C-reactive protein (CRP) were analyzed...
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27998052/ultrasonography-how-to-raise-the-impact-factor
#4
Jeong-Sik Yu
No abstract text is available yet for this article.
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27956731/practical-and-illustrated-summary-of-updated-bi-rads-for-ultrasonography
#5
Jiyon Lee
The American College of Radiology released the fifth edition of the Breast Imaging-Reporting and Data System (BI-RADS) in 2014 (copyright 2013), which includes the expanded second edition of the ultrasound BI-RADS lexicon. This review provides a practical summary of the updated lexicon, including selective illustrations with original clinical images, a discussion of overarching concepts, and examples of current clinical applications.
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27784154/evaluation-of-factors-influencing-arterial-doppler-waveforms-in-an-in-vitro-flow-phantom
#6
Chang Kyu Sung, Kyoung Ho Lee, Seung Hyup Kim
PURPOSE: The aim of this study was to investigate factors that influence arterial Doppler waveforms in an in vitro phantom to provide a more accurate and comprehensive explanation of the Doppler signal. METHODS: A flow model was created using a pulsatile artificial heart, rubber or polyethylene tubes, a water tank, and a glass tube. Spectral Doppler tracings were obtained in multiple combinations of compliance, resistance, and pulse rate. Peak systolic velocity, minimum diastolic velocity, resistive index (RI), pulsatility index, early systolic acceleration time, and acceleration index were measured...
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27776402/the-value-of-intraoperative-ultrasonography-during-the-resection-of-relapsed-irradiated-malignant-gliomas-in-the-brain
#7
Kay Mursch, Martin Scholz, Wolfgang Brück, Julianne Behnke-Mursch
PURPOSE: The aim of this study was to investigate whether intraoperative ultrasonography (IOUS) helped the surgeon navigate towards the tumor as seen in preoperative magnetic resonance imaging and whether IOUS was able to distinguish between tumor margins and the surrounding tissue. METHODS: Twenty-five patients suffering from high-grade gliomas who were previously treated by surgery and radiotherapy were included. Intraoperatively, two histopathologic samples were obtained a sample of unequivocal tumor tissue (according to anatomical landmarks and the surgeon's visual and tactile impressions) and a small tissue sample obtained using a navigated needle when the surgeon decided to stop the resection...
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27764909/value-of-sagittal-color-doppler-ultrasonography-as-a-supplementary-tool-in-the-differential-diagnosis-of-fetal-cleft-lip-and-palate
#8
Myoung Seok Lee, Jeong Yeon Cho, Sang Youn Kim, Seung Hyup Kim, Joong Shin Park, Jong Kwan Jun
PURPOSE: The purpose of this study was to evaluate the feasibility and usefulness of sagittal color Doppler ultrasonography (CDUS) for the diagnosis of fetal cleft lip (CL) and cleft palate (CP). METHODS: We performed targeted ultrasonography on 25 fetuses with CL and CP, taking coronal and axial images of the upper lip and maxillary alveolar arch in each case. The existence of defects in and malalignment of the alveolus on the axial image, hard palate defects on the midsagittal image, and flow-through defects on CDUS taken during fetal breathing or swallowing were assessed...
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27599891/ultrasonographic-features-of-traumatic-neuromas-in-breast-cancer-patients-after-mastectomy
#9
Hwa Sung Sung, Young-Seon Kim
PURPOSE: The purpose of this study was to evaluate the ultrasonographic (US) features of traumatic neuromas in breast cancer patients after mastectomy. METHODS: This study was performed with approval from our Institutional Review Board, and the requirement for informed consent was waived. Six traumatic neuromas in five patients were included in this study. The US findings of traumatic neuromas were evaluated retrospectively by two radiologists according to the Breast Imaging-Reporting and Data System (BI-RADS) lexicon...
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27459989/shear-wave-elastography-using-ultrasound-effects-of-anisotropy-and-stretch-stress-on-a-tissue-phantom-and-in-vivo-reactive-lymph-nodes-in-the-neck
#10
Ha Young Lee, Jeong Hyun Lee, Ji Hoon Shin, So Yeon Kim, Hee Jung Shin, Jeong Seon Park, Young Jun Choi, Jung Hwan Baek
PURPOSE: The purpose of this study was to evaluate how the anisotropy and the static stretch stress of the cervical musculature influence the measured shear modulus in a tissue-mimicking phantom and in cervical lymph nodes in vivo by using shear wave elastography (SWE). METHODS: SWE was performed on a phantom using a pig muscle and on the middle jugular cervical lymph nodes in six volunteers. Tissue elasticity was quantified using the shear modulus and a supersonic shear wave imaging technique...
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27457337/assessing-the-accuracy-and-reliability-of-ultrasonographic-three-dimensional-parathyroid-volume-measurement-in-a-patient-with-secondary-hyperparathyroidism-a-comparison-with-the-two-dimensional-conventional-method
#11
Sung-Hye You, Sang-Il Suh, In-Seon Ryoo, Gyu-Ri Son, Young-Hen Lee, Hyung Suk Seo, Nam Joon Lee, Hae Young Seol
PURPOSE: The purpose of this study was to investigate the accuracy and reliability of the semi-automated ultrasonographic volume measurement tool, virtual organ computer-aided analysis (VOCAL), for measuring the volume of parathyroid glands. METHODS: Volume measurements for 40 parathyroid glands were performed in patients with secondary hyperparathyroidism caused by chronic renal failure. The volume of the parathyroid glands was measured twice by experienced radiologists by two-dimensional (2D) and three-dimensional (3D) methods using conventional sonograms and the VOCAL with 30°angle increments before parathyroidectomy...
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27338188/focal-lesion-at-the-midline-of-the-prostate-on-transrectal-ultrasonography-take-it-or-leave-it
#12
Junwoo Kim, Sung Il Hwang, Hak Jong Lee, Sung Kyu Hong, Seok-Soo Byun, Sangchul Lee, Gheeyoung Choe
PURPOSE: The purpose of this study was to analyze the detection rate of prostate cancers from targeted biopsy specimens of midline focal lesions and to investigate the ultrasonographic findings to reduce unnecessary additional targeted biopsies. METHODS: Ninety-eight men with midline focal lesions detected on transrectal ultrasonography were enrolled. Additional targeted biopsies for midline focal lesions were performed after 12-core random systematic biopsies. Correlations between the ultrasonographic characteristics of midline focal lesions and the pathologic results were analyzed...
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27184656/clinical-application-of-s-detect-to-breast-masses-on-ultrasonography-a-study-evaluating-the-diagnostic-performance-and-agreement-with-a-dedicated-breast-radiologist
#13
Kiwook Kim, Mi Kyung Song, Eun-Kyung Kim, Jung Hyun Yoon
PURPOSE: The purpose of this study was to evaluate the diagnostic performance of S-Detect when applied to breast ultrasonography (US), and the agreement with an experienced radiologist specializing in breast imaging. METHODS: From June to August 2015, 192 breast masses in 175 women were included. US features of the breast masses were retrospectively analyzed by a radiologist who specializes in breast imaging and S-Detect, according to the fourth edition of the American College of Radiology Breast Imaging Reporting and Data System lexicon and final assessment categories...
January 2017: Ultrasonography
https://www.readbyqxmd.com/read/27669962/diagnostic-vascular-ultrasonography-with-the-help-of-color-doppler-and-contrast-enhanced-ultrasonography
#14
REVIEW
Johannes Rübenthaler, Maximilian Reiser, Dirk-André Clevert
The use of ultrasonography and especially of contrast-enhanced ultrasonography (CEUS) in the diagnosis of vascular pathologies before and after interventions has significantly increased over the past years due to the broader availability of modern ultrasound systems with CEUS capabilities and more trained user experience in this imaging modality. For the preinterventional and postinterventional work-up of carotid diseases, duplex ultrasound as well as CEUS have been established as the standard-of-care examination procedures for diagnosis, evaluation, and follow-up...
October 2016: Ultrasonography
https://www.readbyqxmd.com/read/27669961/clinical-photoacoustic-imaging-of-cancer
#15
REVIEW
Keerthi S Valluru, Juergen K Willmann
Photoacoustic imaging is a hybrid technique that shines laser light on tissue and measures optically induced ultrasound signal. There is growing interest in the clinical community over this new technique and its possible clinical applications. One of the most prominent features of photoacoustic imaging is its ability to characterize tissue, leveraging differences in the optical absorption of underlying tissue components such as hemoglobin, lipids, melanin, collagen and water among many others. In this review, the state-of-the-art photoacoustic imaging techniques and some of the key outcomes pertaining to different cancer applications in the clinic are presented...
October 2016: Ultrasonography
https://www.readbyqxmd.com/read/27599892/molecular-subtypes-and-imaging-phenotypes-of-breast-cancer
#16
REVIEW
Nariya Cho
During the last 15 years, traditional breast cancer classifications based on histopathology have been reorganized into the luminal A, luminal B, human epidermal growth factor receptor 2 (HER2), and basal-like subtypes based on gene expression profiling. Each molecular subtype has shown varying risk for progression, response to treatment, and survival outcomes. Research linking the imaging phenotype with the molecular subtype has revealed that non-calcified, relatively circumscribed masses with posterior acoustic enhancement are common in the basal-like subtype, spiculated masses with a poorly circumscribed margin and posterior acoustic shadowing in the luminal subtype, and pleomorphic calcifications in the HER2-enriched subtype...
October 2016: Ultrasonography
https://www.readbyqxmd.com/read/27599890/applications-of-acoustic-radiation-force-impulse-quantification-in-chronic-kidney-disease-a-review
#17
REVIEW
Liang Wang
Acoustic radiation force impulse (ARFI) imaging is an emerging technique with great promise in the field of elastography. Previous studies have validated ARFI quantification as a method of estimating fibrosis in chronic liver disease. Similarly, fibrosis is the principal process underlying the progression of chronic kidney disease, which is the major cause of renal failure. However, the quantification of tissue stiffness using ARFI imaging is more complex in the kidney than in the liver. Moreover, not all previous studies are comparable because they employed different procedures...
October 2016: Ultrasonography
https://www.readbyqxmd.com/read/27599889/preclinical-evaluation-of-acoustic-radiation-force-impulse-measurements-in-regions-of-heterogeneous-elasticity
#18
Katharina Hollerieth, Bernhard Gaßmann, Stefan Wagenpfeil, Philipp Moog, Minh-Truc Vo-Cong, Uwe Heemann, Konrad Friedrich Stock
PURPOSE: The purpose of this study was to compare the reliability of ultrasound-based shear wave elastography in regions of homogeneous versus heterogeneous elasticity by using two different probes. METHODS: Using acoustic radiation force impulse (ARFI) elastography, we measured the shear wave velocity (SWV) in different lesions of an elastography phantom with the convex 4C1 probe and the linear 9L4 probe. The region of interest (ROI) was positioned in such a way that it was partly filled by one of the lesions (0%, 25%, 50%, 75%, and 100%) and partly by the background of the phantom (100%, 75%, 50%, 25%, and 0%, respectively)...
October 2016: Ultrasonography
https://www.readbyqxmd.com/read/27197842/theragnostic-ultrasound-using-microbubbles-in-the-treatment-of-prostate-cancer
#19
REVIEW
Hak Jong Lee, Young Il Yoon, Yun Jung Bae
The use of gas-filled microbubbles in perfusion monitoring as intravascular ultrasound contrast agents has recently become more common. Additionally, microbubbles are employed as carriers of pharmaceutical substances or genes. Microbubbles have great potential to improve the delivery of therapeutic materials into cells and to modify vascular permeability, causing increased extravasation of drugs and drug carriers. Prostate cancer is the most common neoplasm in Europe and America, with an incidence twice to three times that of lung and colorectal cancer...
October 2016: Ultrasonography
https://www.readbyqxmd.com/read/27184655/validation-of-the-fifth-edition-bi-rads-ultrasound-lexicon-with-comparison-of-fourth-and-fifth-edition-diagnostic-performance-using-video-clips
#20
Jung Hyun Yoon, Min Jung Kim, Hye Sun Lee, Sung Hun Kim, Ji Hyun Youk, Sun Hye Jeong, You Me Kim
PURPOSE: The aim of this study was to evaluate the positive predictive value (PPV) and the diagnostic performance of the ultrasonographic descriptors in the fifth edition of BI-RADS, comparing with the fourth edition using video clips. METHODS: From September 2013 to July 2014, 80 breast masses in 74 women (mean age, 47.5±10.7 years) from five institutions of the Korean Society of Breast Imaging were included. Two radiologists individually reviewed the static and video images and analyzed the images according to the fourth and fifth edition of BI-RADS...
October 2016: Ultrasonography
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