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Ultrasonography

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https://www.readbyqxmd.com/read/29113031/role-of-core-needle-biopsy-as-a-first-line-diagnostic-tool-for-thyroid-nodules-a-retrospective-cohort-study
#1
Min Ji Hong, Dong Gyu Na, Soo Jin Kim, Dae Sik Kim
Purpose: The purpose of this study was to evaluate the diagnostic efficacy of fine-needle aspiration (FNA), core needle biopsy (CNB), and combined FNA/CNB for the first-line diagnosis of thyroid nodules. Methods: A total of 782 consecutive nodules that underwent simultaneous FNA and CNB were analyzed in this study. We compared the rate of inconclusive results and the diagnostic values for malignancy among FNA, CNB, and combined FNA/CNB. Results: CNB showed a lower rate (10...
September 15, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29103250/dynamic-ultrasonography-of-the-shoulder
#2
Jina Park, Jee Won Chai, Dong Hyun Kim, Seung Woo Cha
Ultrasonography (US) is a useful diagnostic method that can be easily applied to identify the cause of shoulder pain. Its low cost, excellent diagnostic accuracy, and capability for dynamic evaluation are also advantages. To assess all possible causes of shoulder pain, it is better to follow a standardized protocol and to perform a comprehensive evaluation of the shoulder than to conduct a focused examination. Moreover, a proper dynamic study can enhance the diagnostic quality of US, especially when the pathology is not revealed by a static evaluation...
August 26, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29141286/ultrasound-features-of-secondary-appendicitis-in-pediatric-patients
#3
Lyo Min Kwon, Kwanseop Lee, Soo Kee Min, Soo Min Ahn, Hong Il Ha, Min-Jeong Kim
Purpose: The purpose of this study was to evaluate the ultrasonographic findings of secondary appendicitis (SA) and to discuss the differential findings compared with primary appendicitis. Methods: In this study, we analyzed the ultrasonographic findings of 94 patients under 15 years old of age treated at our institution from May 2005 to May 2014 who had bowel inflammation and an inflamed appendix with a maximal outer diameter >6 mm that improved with nonsurgical treatment (the SA group)...
August 25, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28736429/ultrasound-guided-genitourinary-interventions-principles-and-techniques
#4
REVIEW
Byung Kwan Park
Ultrasound (US) is often used to guide various interventional procedures in the genitourinary (GU) tract because it can provide real-time imaging without any radiation hazard. Moreover, US can clearly visualize the pathway of an aspiration or biopsy needle to ensure the safety of the intervention. US guidance also helps clinicians to access lesions via the transabdominal, transhepatic, transvaginal, transrectal, and transperineal routes. Hence, US-guided procedures are useful for radiologists who wish to perform GU interventions...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28658733/thyroid-disease-in-children-and-adolescents
#5
Hyun Sook Hong, Ji Ye Lee, Sun Hye Jeong
No abstract text is available yet for this article.
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28633198/factors-related-to-the-efficacy-of-radiofrequency-ablation-for-benign-thyroid-nodules
#6
Jung Hwan Baek
No abstract text is available yet for this article.
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28607324/updated-guidelines-on-the-preoperative-staging-of-thyroid-cancer
#7
REVIEW
Hye Jung Kim
Recent studies have provided prognostic information and recommendations for staging thyroid cancers that have changed the staging and management guidelines for the disease. Consequently, minimal extrathyroidal extension (ETE) was removed from the T3 stage classification in the eighth edition of the TNM staging system by the American Joint Committee on Cancer. New T categories have been subsequently added, including T3a, defined as a tumor >4 cm in its greatest dimension, limited to the thyroid gland, and T3b, defined as a tumor of any size with gross ETE invading only the strap muscles...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28535605/ultrasonography-of-the-ankle-joint
#8
REVIEW
Jung Won Park, Sun Joo Lee, Hye Jung Choo, Sung Kwan Kim, Heui-Chul Gwak, Sung-Moon Lee
Ankle disorders are a relatively common pathological condition, and ankle injuries account for approximately 14% of sports-related orthopedic emergency visits. Various imaging modalities can be used to make a diagnosis in cases of ankle pain; however, ultrasound (US) has several benefits for the evaluation of ankle pain, especially in the tendons, ligaments, and nerves of the ankle. The purpose of this article is to review the common causes of ankle pathology, with particular reference to US features. In addition, the importance of a dynamic evaluation and a stress test with US is emphasized...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28513128/clinical-features-of-recently-diagnosed-papillary-thyroid-carcinoma-in-elderly-patients-aged-65-and-older-based-on-10-years-of-sonographic-experience-at-a-single-institution-in-korea
#9
Eun Sil Kim, Younghen Lee, Hyungsuk Seo, Gil Soo Son, Soon Young Kwon, Young-Sik Kim, Ji-A Seo, Nan Hee Kim, Sang-Il Suh, Inseon Ryoo, Sung-Hye You
PURPOSE: The aim of this study was to assess the characteristics of papillary thyroid carcinoma (PTC) in patients aged 65 and older in order to predict postoperative recurrence based on the results of ultrasonographic surveillance. METHODS: Among 1,494 patients (200 male and 1,294 female; mean age, 46.6±11.3 years) who underwent surgery for thyroid cancer at our institution between 2006 and 2015, we retrospectively enrolled 150 PTC patients (29 male and 121 female; mean age, 69...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28513127/shear-wave-elastography-in-breast-ultrasonography-the-state-of-the-art
#10
REVIEW
Ji Hyun Youk, Hye Mi Gweon, Eun Ju Son
Shear-wave elastography (SWE) is a recently developed ultrasound technique that can visualize and measure tissue elasticity. In breast ultrasonography, SWE has been shown to be useful for differentiating benign breast lesions from malignant breast lesions, and it has been suggested that SWE enhances the diagnostic performance of ultrasonography, potentially improving the specificity of conventional ultrasonography using the Breast Imaging Reporting and Data System criteria. More recently, not only has SWE been proven useful for the diagnosis of breast cancer, but has also been shown to provide valuable information that can be used as a preoperative predictor of the prognosis or response to chemotherapy...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28494526/ultrasonographic-evaluation-of-women-with-pathologic-nipple-discharge
#11
REVIEW
Jung Hyun Yoon, Haesung Yoon, Eun-Kyung Kim, Hee Jung Moon, Youngjean Vivian Park, Min Jung Kim
Nipple discharge is a common symptom that is alarming for the patient since it can be a presenting symptom of breast cancer. Breast imaging is used to examine women with pathologic nipple discharge in order to detect any lesions that may be present and to assist in the differential diagnosis. The modalities of breast imaging include mammography, breast ultrasonography (US), and magnetic resonance imaging. Breast US is currently considered to be useful for the visualization of ductal structures and intraductal lesions that cause nipple discharge...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28494524/ultrasonographic-findings-of-posterior-interosseous-nerve-syndrome
#12
Youdong Kim, Doo Hoe Ha, Sang Min Lee
PURPOSE: The purpose of this study was to evaluate the ultrasonographic findings associated with posterior interosseous nerve (PIN) syndrome. METHODS: Approval from the Institutional Review Board was obtained. A retrospective review of 908 patients' sonographic images of the upper extremity from January 2001 to October 2010 revealed 10 patients suspicious for a PIN abnormality (7 male and 3 female patients; mean age of 51.8±13.1 years; age range, 32 to 79 years)...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28494523/korean-thyroid-imaging-reporting-and-data-system-features-of-follicular-thyroid-adenoma-and-carcinoma-a-single-center-study
#13
Jung Won Park, Dong Wook Kim, Donghyun Kim, Jin Wook Baek, Yoo Jin Lee, Hye Jin Baek
PURPOSE: This study aimed to assess the diagnostic efficacy of Korean Thyroid Imaging Reporting and Data System (K-TIRADS) features for distinguishing follicular thyroid adenoma (FTA) from follicular thyroid carcinoma (FTC). METHODS: From January 2013 to July 2016, 46 follicular neoplasms in 45 patients who underwent preoperative thyroid ultrasonography (US) and thyroid surgery were included. The US features of each thyroid nodule were retrospectively evaluated by a single radiologist using a picture archiving and communication system...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28290184/ultrasound-contrast-enhanced-study-as-an-imaging-biomarker-for-anti-cancer-drug-treatment-preliminary-study-with-paclitaxel-in-a-xenograft-mouse-tumor-model-secondary-publication
#14
Hak Jong Lee, Sung Il Hwang, Jonghoe Byun, Hoon Young Kong, Hyun Sook Jung, Mira Kang
PURPOSE: The purpose of this study was to assess tumor angiogenesis using contrast-enhanced ultrasonography (CEUS) of human prostate cancer cells (PC3) that were implanted in mice before and after paclitaxel injection. METHODS: Twelve mice were injected with human PC3. The mice were grouped into two groups; one was the paclitaxel-treated group (n=6) and the other was the control group (n=6). Before administering paclitaxel into the peritoneal cavity, baseline CEUS was performed after the administration of 500 μL (1×108 microbubbles) of contrast agent...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/28290183/synthesis-of-ultrasound-contrast-agents-characteristics-and-size-distribution-analysis-secondary-publication
#15
Hak Jong Lee, Tae-Jong Yoon, Young Il Yoon
PURPOSE: The purpose of this study was to establish a method for ultrasound (US) contrast agent synthesis and to evaluate the characteristics of the synthesized US contrast agent. METHODS: A US contrast agent, composed of liposome and sulfur hexafluoride (SF6), was synthesized by dissolving 21 μmol 1,2-dihexadecanoyl-sn-glycero-3-phosphocholine (DPPC, C40H80NO8P), 9 μmol cholesterol, and 1.9 μmol of dihexadecylphosphate (DCP, [CH3(CH2)15O]2P(O)OH) in chloroform...
October 2017: Ultrasonography
https://www.readbyqxmd.com/read/29137452/pathologic-basis-of-the-sonographic-differences-between-thyroid-cancer-and-noninvasive-follicular-thyroid-neoplasm-with-papillary-like-nuclear-features
#16
Grace C H Yang, Karen O Fried
Ultrasonography is pivotal in triage thyroid biopsy in the era after the identification of noninvasive follicular thyroid neoplasm with papillary-like nuclear features (NIFTP). This pictorial essay illustrates the pathologic basis of the sonographic features that distinguish NIFTP from thyroid cancers. In this study, we present the correlations of ultrasonography to ×1 histopathology to assess shape and margin characteristics. Markedly hypoechoic nodules correlate to microfollicular/solid nodules, while isoechoic/hyperechoic thyroid nodules correlate to normofollicular/macrofollicular nodules...
August 19, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29096427/accurate-measurements-of-liver-stiffness-using-shear-wave-elastography-in-children-and-young-adults-and-the-role-of-the-stability-index
#17
Eun Kyoung Hong, Young Hun Choi, Jung-Eun Cheon, Woo Sun Kim, In-One Kim, Sun Young Kang
Purpose: The purpose of this study was to evaluate the usefulness of the stability index (SI) in liver stiffness measurements using shear wave elastography (SWE) in children. Methods: A total of 29 children and young adults (mean age, 16.1 years; range, 8 to 28 years; 11 boys and 18 girls) who underwent liver stiffness measurements using SWE under free-breathing and breath-holding conditions were included in our study. Ten SWE measurements were acquired in each of four groups: free-breathing and breath-holding, and with and without using the SI...
August 19, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29061036/diagnosing-ectopic-pregnancy-in-the-emergency-setting
#18
Robert Lee, Carolyn Dupuis, Byron Chen, Andrew Smith, Young H Kim
Ectopic pregnancy is the implantation of a fertilized egg outside the uterine endometrial cavity. For women presenting to the emergency department with abdominal pain and/or vaginal bleeding, ectopic pregnancy is an important diagnostic consideration. The diagnosis is made based on laboratory values and ultrasound imaging findings. The ultrasound appearance of both normal early pregnancy and ectopic pregnancy are variable and often subtle, presenting diagnostic challenges for radiologists. This pictorial essay describes and illustrates the sonographic findings of ectopic pregnancy and reviews the differential diagnoses that can mimic ectopic pregnancy on ultrasound...
August 19, 2017: Ultrasonography
https://www.readbyqxmd.com/read/29025210/up-to-date-doppler-techniques-for-breast-tumor-vascularity-superb-microvascular-imaging-and-contrast-enhanced-ultrasound
#19
Ah Young Park, Bo Kyoung Seo
Ultrasonographic Doppler techniques have improved greatly over the years, allowing more sophisticated evaluation of breast tumor vascularity. Superb microvascular imaging (SMI) and contrast-enhanced ultrasound (CEUS) with second-generation contrast agents are two representative up-to-date techniques. SMI is a sensitive Doppler technique that adopts an intelligent filter system to separate low-flow signals from artifacts. With the development of second-generation contrast agents, CEUS has also emerged as a useful Doppler technique for evaluating tumor microcirculation...
August 19, 2017: Ultrasonography
https://www.readbyqxmd.com/read/28992680/application-of-computer-aided-diagnosis-in-breast-ultrasound-interpretation-improvements-in-diagnostic-performance-according-to-reader-experience
#20
Ji-Hye Choi, Bong Joo Kang, Ji Eun Baek, Hyun Sil Lee, Sung Hun Kim
Purpose: The purpose of this study was to evaluate the usefulness of applying computer-aided diagnosis (CAD) to breast ultrasound (US), depending on the operator's experience with breast imaging. Methods: Between October 2015 and January 2016, two experienced readers obtained and analyzed the grayscale US images of 200 cases according to the Breast Imaging Reporting and Data System (BI-RADS) lexicon and categories. They additionally applied CAD (S-Detect) to analyze the lesions and made a diagnostic decision subjectively, based on grayscale US with CAD...
August 14, 2017: Ultrasonography
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