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Ultrasonography

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https://www.readbyqxmd.com/read/28228009/emergency-ultrasonography-of-the-gastrointestinal-tract-of-children
#1
Jae-Yeon Hwang
Ultrasonography (US) is widely used to evaluate most body parts in pediatric patients because it is simple, noninvasive, easy to use, and applicable in a wide variety of clinical situations. US is the modality of choice for the initial evaluation of acute abdominal pain in pediatric patients because of their small body habitus and the presence of less fat tissue in the abdominal wall and peritoneal cavity. The most important factor in performing pediatric emergency US is the graded compression technique and selection of the proper transducer...
January 25, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28219004/doppler-ultrasonography-of-the-lower-extremity-arteries-anatomy-and-scanning-guidelines
#2
Ji Young Hwang
Doppler ultrasonography of the lower extremity arteries is a valuable technique, although it is less frequently indicated for peripheral arterial disease than for deep vein thrombosis or varicose veins. Ultrasonography can diagnose stenosis through the direct visualization of plaques and through the analysis of the Doppler waveforms in stenotic and poststenotic arteries. To perform Doppler ultrasonography of the lower extremity arteries, the operator should be familiar with the arterial anatomy of the lower extremities, basic scanning techniques, and the parameters used in color and pulsed-wave Doppler ultrasonography...
January 18, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28222584/ultrasonographic-imaging-of-papillary-thyroid-carcinoma-variants
#3
Jung Hee Shin
Ultrasonography (US) is routinely used to evaluate thyroid nodules. The US features of papillary Epub ahead of print thyroid carcinoma (PTC), the most common thyroid malignancy, include hypoechogenicity, spiculated/microlobulated margins, microcalcifications, and a nonparallel orientation. However, many PTC variants have been identified, some of which differ from the classic type of PTC in terms of biological behavior and clinical outcomes. This review describes the US features and clinical implications of the variants of PTC...
January 12, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28145109/current-status-of-high-intensity-focused-ultrasound-for-the-management-of-uterine-adenomyosis
#4
Vincent Y T Cheung
While high-intensity focused ultrasound has been used for some time in the management of uterine fibroids, its effectiveness and safety in managing adenomyosis is less well established. A literature review was performed of all eligible reports using this modality as a treatment for adenomyosis. Relevant publications were obtained from the PubMed electronic database from inception through March 2016. Eleven articles, including information from 1,150 treatments and follow-up data from 990 patients, were reviewed...
November 30, 2016: Ultrasonography
https://www.readbyqxmd.com/read/27998053/ultrasonographic-findings-of-kikuchi-cervical-lymphadenopathy-in-children
#5
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
#6
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
#7
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
#8
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
#9
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
#10
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
#11
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
#12
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
#13
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
#14
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
#15
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/28145108/detection-of-liver-metastases-in-cancer-patients-with-geographic-fatty-infiltration-of-the-liver-the-added-value-of-contrast-enhanced-sonography
#16
Tommaso Vincenzo Bartolotta, Adele Taibbi, Dario Picone, Andrea Anastasi, Massimo Midiri, Roberto Lagalla
Purpose: The aim of this study is to assess the role of contrast-enhanced ultrasonography (CEUS) in the detection of liver metastases in cancer patients with geographic liver fatty deposition on greyscale ultrasonography (US). Methods: Thirty-seven consecutive cancer patients (24 women and 13 men; age, 33 to 80 years; mean, 58.1 years) with geographic liver fatty deposition, but without any detectable focal liver lesion on greyscale US, underwent sulphur hexafluoride-enhanced US...
November 16, 2016: Ultrasonography
https://www.readbyqxmd.com/read/27956733/metastatic-renal-cell-carcinoma-in-the-thyroid-gland-ultrasonographic-features-and-the-diagnostic-role-of-core-needle-biopsy
#17
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
#18
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/27669962/diagnostic-vascular-ultrasonography-with-the-help-of-color-doppler-and-contrast-enhanced-ultrasonography
#19
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
#20
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
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