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eus elastography

Camilo Julio Llamoza-Torres, Maria Fuentes-Pardo, Francisco Javier Álvarez-Higueras, Fernando Alberca-de-Las-Parras, Fernando Carballo-Álvarez
OBJECTIVE: To determine the accuracy of the acoustic radiation force impulse (ARFI) technique for the diagnosis of chronic pancreatitis. MATERIALS AND METHODS: We present an observational, single-center study that included patients with suspected chronic pancreatitis in the period between October 2012 and September 2015 who underwent endoscopic ultrasound (EUS) and were classified according to the standard and Rosemont criteria. The same group of patients was assessed by the ARFI technology using ACUSON S2000™ equipment with Virtual Touch™ Quantification software for the assessment of pancreatic stiffness by obtaining the shear wave velocity (SWV) in the head, body and tail of the pancreas...
August 2016: Revista Española de Enfermedades Digestivas
Tetsutaro Sazuka, Takashi Akai, Masaya Uesato, Daisuke Horibe, Mari Kuboshima, Hiroyuki Kitabayashi, Akinao Matsunaga, Akiko Kagaya, Yorihiko Muto, Nobuyoshi Takeshita, Tetsuro Maruyama, Yukimasa Miyazawa, Kiyohiko Shuto, Toru Shiratori, Tsuguaki Kono, Yasunori Akutsu, Isamu Hoshino, Hisahiro Matsubara
BACKGROUND: We performed endoscopic ultrasound real-time tissue elastography to more accurately diagnose lymph node metastasis of esophageal cancer. The aim of this study was to evaluate the ability of EUS elastography to distinguish benign from malignant lymph nodes in esophageal cancer patients. METHODS: The present study had two steps. As the first step (study 1), we developed diagnostic criteria for metastatic lymph nodes using elastography and verified the validity of the criteria...
2016: Esophagus: Official Journal of the Japan Esophageal Society
Pragnesh Patel, Julie Guider, Erik Rahimi, Sushovan Guha, Songlin Zhang, Nirav Thosani
There is a paucity of literature on the use of endoscopic ultrasound (EUS) for evaluating superior mediastinal structures, especially the thymus gland. We report a case of thymic carcinoma diagnosed by using EUS elastography with strain ratio and fine-needle aspiration (FNA). A 64-year-old woman presented with altered mental status and was diagnosed with autoimmune encephalitis. Further work-up suggested a superior mediastinal mass, for which she underwent EUS. A hypoechoic mass was found in the superior mediastinum at the level of the aortic arch...
May 2016: Endoscopic Ultrasound
Surinder S Rana, Arvind Dambalkar, Puneet Chhabra, Ravi Sharma, Ritambhra Nada, Vishal Sharma, Satyavati Rana, Deepak K Bhasin
BACKGROUND: Although exocrine pancreatic insufficiency (EPI) has been reported in a number of patients with celiac disease (CD), it is not clear if this is primarily a functional or a structural defect. We studied pancreatic structural abnormalities by endoscopic ultrasound (EUS) in adult CD patients with EPI. METHODS: Pancreatic exocrine function was prospectively assessed in 36 recently diagnosed CD patients (mean age: 29.8 years) by measuring fecal elastase. Pancreatic structural changes were assessed in CD patients with EPI by EUS and elastography...
July 2016: Annals of Gastroenterology: Quarterly Publication of the Hellenic Society of Gastroenterology
Łukasz Paluch, Ewa Nawrocka-Laskus, Janusz Wieczorek, Bartosz Mruk, Małgorzata Frel, Jerzy Walecki
This article presents possible applications of ultrasound elastography in musculoskeletal imaging based on the available literature, as well as the possibility of extending indications for the use of elastography in the future. Ultrasound elastography (EUS) is a new method that shows structural changes in tissues following application of physical stress. Elastography techniques have been widely used to assess muscles and tendons in vitro since the early parts of the twentieth century. Only recently with the advent of new technology and creation of highly specialized ultrasound devices, has elastography gained widespread use in numerous applications...
2016: Polish Journal of Radiology
Ken Kamata, Masayuki Kitano, Shunsuke Omoto, Kumpei Kadosaka, Takeshi Miyata, Kosuke Minaga, Kentaro Yamao, Hajime Imai, Masatoshi Kudo
Endoscopic ultrasonography (EUS) is widely used to evaluate pancreaticobiliary diseases, especially pancreatic masses. EUS has a good ability to detect pancreatic masses, but it is not sufficient for the differential diagnosis of various types of lesions. In order to address the limitations of EUS, new techniques have been developed to improve the characterization of the lesions detected by EUS. EUS-guided fine needle aspiration (EUS-FNA) has been used for diagnosing pancreatic tumors. In order to improve the histological diagnostic yield, a EUS-FNA needle with a core trap has recently been developed...
July 2016: Ultrasonography
Ayhan Aşkın, Özlem Tuğçe Kalaycı, Korhan Barış Bayram, Aliye Tosun, Ümit Seçil Demirdal, Emel Atar, Mehmet Fatih İnci
BACKGROUND: The most commonly used clinical tools for measuring spasticity are modified Ashworth scale (MAS) and Tardieu scale but both yield subjective rather than objective results. Ultrasound elastography (EUS) provides information on tissue stiffness and allows the qualitative or quantitative measurements of the mechanical properties of tissues. OBJECTIVE: To assess the stiffness of biceps brachialis muscles in stroke patients by strain EUS and to investigate the sonoelastographic changes and its correlations with clinical evaluation parameters after botulinum toxin-A (BTA) injections...
May 23, 2016: Topics in Stroke Rehabilitation
Marta Serrani, Andrea Lisotti, Giancarlo Caletti, Pietro Fusaroli
It is well established that endoscopic ultrasound (EUS) is fundamental in the characterization of many diseases concerning different organs, i.e. pancreaticobiliary diseases, gastrointestinal pathologic conditions, and lymph nodes of unknown origin. It is also well known that many factors can hamper the accuracy of EUS, i.e. biliary stents, chronic pancreatitis, poor operator's expertise. These factors can also lead to suboptimal accuracy when cytological confirmation through EUS-fine needle aspiration (EUS-FNA) is indicated...
August 2016: Minerva Medica
Tomohisa Iwai, Mitsuhiro Kida, Toru Kaneko, Hiroshi Yamauchi, Kosuke Okuwaki, Shiro Miyazawa, Hiroshi Imaizumi, Wasaburo Koizumi
A 45-year-old woman presented with left lower abdominal pain. A plain CT scan showed a slightly high-density, cord-like structure extending from the level of the diaphragm of the descending aorta to the superior mesenteric artery. Transgastric endoscopic ultrasonography (EUS) revealed a floating mass, smoothly attaching to the aortic intima and depicted as a hyperechoic region containing a mixture of hyperechoic and hypoechoic areas. EUS elastography revealed that the body of the mass consisted of medium soft tissue, with hard tissue at its base...
July 2016: Journal of Medical Ultrasonics
Natsuko Kawada, Sachiko Tanaka
Elastography for the pancreas can be performed by either ultrasound or endoscopic ultrasound (EUS). There are two types of pancreatic elastographies based on different principles, which are strain elastography and shear wave elastography. The stiffness of tissue is estimated by measuring the grade of strain generated by external pressure in the former, whereas it is estimated by measuring propagation speed of shear wave, the transverse wave, generated by acoustic radiation impulse (ARFI) in the latter. Strain elastography is difficult to perform when the probe, the pancreas and the aorta are not located in line...
April 14, 2016: World Journal of Gastroenterology: WJG
Sevastiţa Iordache, Mădălin Ionuţ Costache, Carmen Florina Popescu, Costin-Teodor Streba, Sergiu Cazacu, Adrian Săftoiu
AIMS: It is well known that endoscopic ultrasound guided fine needle aspiration (EUS-FNA) has a high sensitivity (over 85%) and specificity (100%) for diagnosis of pancreatic cancer. The aim of the study was to establish a EUS based clinical diagnostic algorithm in patients with pancreatic masses and negative cytopathology after EUS-FNA, based on previously published results and cut-offs of real-time elastographic (RTE) EUS and contrast-enhanced harmonic (CEH) EUS. MATERIAL AND METHODS: We included in the study a subgroup of 50 consecutive patients with focal pancreatic masses which underwent EUS examinations with negative EUS-FNA...
March 2016: Medical Ultrasonography
Elena Tatiana Cârțână, Dan Ionuț Gheonea, Adrian Săftoiu
The development of endoscopic ultrasound (EUS) has had a significant impact for patients with digestive diseases, enabling enhanced diagnostic and therapeutic procedures, with most of the available evidence focusing on upper gastrointestinal (GI) and pancreatico-biliary diseases. For the lower GI tract the main application of EUS has been in staging rectal cancer, as a complementary technique to other cross-sectional imaging methods. EUS can provide highly accurate in-depth assessments of tumour infiltration, performing best in the diagnosis of early rectal tumours...
February 7, 2016: World Journal of Gastroenterology: WJG
Xin-Wu Cui, Jian-Min Chang, Quan-Cheng Kan, Liliana Chiorean, Andre Ignee, Christoph F Dietrich
Elastography is a new ultrasound modality that provides images and measurements related to tissue stiffness. Endoscopic ultrasound (EUS) has played an important role in the diagnosis and management of numerous abdominal and mediastinal diseases. Elastography by means of EUS examination can assess the elasticity of tumors in the proximity of the digestive tract that are hard to reach with conventional transcutaneous ultrasound probes, such as pancreatic masses and mediastinal or abdominal lymph nodes, thus improving the diagnostic yield of the procedure...
December 21, 2015: World Journal of Gastroenterology: WJG
Yuichiro Tsuji, Chika Kusano, Takuji Gotoda, Fumihide Itokawa, Masakatsu Fukuzawa, Atsushi Sofuni, Jun Matsubayashi, Toshitaka Nagao, Takao Itoi, Fuminori Moriyasu
BACKGROUND AND AIM: Qualitative diagnosis for gastric submucosal tumors (SMT) is not easy. Endoscopic ultrasound-guided fine-needle aspiration (EUS-FNA) in combination with EUS-elastography (EUS-EG) is reported useful for qualitatively diagnosing pancreatic tissues. We prospectively studied whether EUS-EG could be useful in qualitative diagnosis of gastric SMT. METHODS: We prospectively registered 25 consecutive patients with gastric SMT diagnosed by esophagogastroduodenoscopy and carried out qualitative evaluations using EUS-EG (May 2013 to March 2015) followed by histopathological diagnosis using EUS-FNA or endoscopic mucosal cutting biopsy...
March 2016: Digestive Endoscopy: Official Journal of the Japan Gastroenterological Endoscopy Society
João-Bruno Soares, Julio Iglesias-Garcia, Bruno Goncalves, Björn Lindkvist, Jose Lariño-Noia, Pedro Bastos, Ana Cá Lia Caetano, AnIbal Ferreira, Pedro Pimentel-Nunes, LuIs Lopes, Pedro Moutinho-Ribeiro, J Enrique Dominguez-Muñoz
BACKGROUND AND OBJECTIVES: Previous reports assessing the reproducibility of endoscopic ultrasound elastography (EUS-E) in evaluation of solid pancreatic lesions (SPL) involved only experienced endosonographers. We aimed to assess the interobserver agreement (IOA) of EUS-E in the evaluation of SPL by endoscopists with different levels of experience in EUS and EUS-E. MATERIALS AND METHODS: A cross-sectional observational multicenter study was designed and included 11 endoscopists who were divided into four groups: Group A (long experience in EUS and EUS-E); Group B (short experience in EUS and EUS-E); Group C (long experience in EUS and no experience in EUS-E); and Group D (no experience in EUS or EUS-E)...
July 2015: Endoscopic Ultrasound
Christoph F Dietrich, Christian Jenssen, Paolo G Arcidiacono, Xin-Wu Cui, Marc Giovannini, Michael Hocke, Julio Iglesias-Garcia, Adrian Saftoiu, Siyu Sun, Liliana Chiorean
Different imaging techniques can bring different information which will contribute to the final diagnosis and further management of the patients. Even from the time of Hippocrates, palpation has been used in order to detect and characterize a body mass. The so-called virtual palpation has now become a reality due to elastography, which is a recently developed technique. Elastography has already been proving its added value as a complementary imaging method, helpful to better characterize and differentiate between benign and malignant masses...
July 2015: Endoscopic Ultrasound
Pradermchai Kongkam, Narisorn Lakananurak, Patpong Navicharern, Tanyaporn Chantarojanasiri, Khin Aye, Wiriyaporn Ridtitid, Krit Kritisin, Phonthep Angsuwatcharakon, Satimai Aniwan, Rapat Pittayanon, Pichet Sampatanukul, Sombat Treeprasertsuk, Pinit Kullavanijaya, Rungsun Rerknimitr
BACKGROUND: Negative results of EUS-FNA for solid pancreatic lesions (SPL) can be false ones. Combination with strain ratio (SR) may ensure a correct benign diagnosis of SPL. AIMS: We prospectively evaluated the sensitivity rate of EUS-FNA and EUS elastography using the strain ratio method for diagnosing SPL. METHODS: Thirty-eight patients with SPL identified by CT or MRI between January 2013 and November 2013 were included in our prospective study...
November 2015: Journal of Gastroenterology and Hepatology
Fan-Sheng Meng, Zhao-Hong Zhang, Feng Ji
Endoscopic ultrasound (EUS) is one of the most important modalities for the diagnosis of digestive tract diseases. EUS has been evolving ever since it was introduced. New techniques such as elastography and contrast enhancement have emerged, increasing the accuracy, sensitivity and specificity of EUS for the diagnosis of digestive tract diseases including pancreatic masses and lymphadenopathy. EUS-elastography evaluates tissue elasticity and therefore, can be used to differentiate various lesions. Contrast-enhanced EUS can distinguish benign from malignant pancreatic lesions and lymphadenopathy using the intravenous injection of contrast agents...
April 28, 2015: World Journal of Gastroenterology: WJG
Dalibor Opačić, Nadan Rustemović, Mirjana Kalauz, Pave Markoš, Zvonimir Ostojić, Matea Majerović, Iva Ledinsky, Ana Višnjić, Juraj Krznarić, Milorad Opačić
AIM: To investigate the accuracy of the strain histogram endoscopic ultrasound (EUS)-based method for the diagnostic differentiation of patients with pancreatic masses. METHODS: In a prospective single center study, 149 patients were analyzed, 105 with pancreatic masses and 44 controls. Elastography images were recorded using commercially available ultrasound equipment in combination with EUS linear probes. Strain histograms (SHs) were calculated by machine integrated software in regions of interest and mean values of the strain histograms were expressed as Mode 1 (over the mass) and Mode 2 (over an adjacent part of pancreatic tissue, representing the reference area)...
April 7, 2015: World Journal of Gastroenterology: WJG
Julio Iglesias-García, José Lariño-Noia, Björn Lindkvist, J Enrique Domínguez-Muñoz
Diagnosis of chronic pancreatitis (CP) remains a challenge. Endoscopic ultrasound (EUS) can be considered nowadays as the technique of choice for the morphological diagnosis of this disease. More than three or four EUS defined criteria of CP need to be present for the diagnosis of the disease. The development of the more restrictive Rosemont classification aims to standardize the criteria, assigning different values to different features but its impact on the EUS-based diagnosis of CP is debatable. A combined use of endoscopic function test and EUS has even increased the diagnostic yield...
April 2015: Revista Española de Enfermedades Digestivas
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