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Journal of Medical Ultrasonics

Takashi Kunihara
Aortic valvuloplasty (AVP) has been performed less frequently than mitral valvuloplasty. The survival benefit of AVP over replacement has been demonstrated. Therefore, standardization of AVP is crucial for its widespread adoption. The hemodynamic advantage of AVP of preserving the native aortic valve may be one reason for the survival benefit. Recent guidelines still recommend AVP in selected cases compared with the less restricted recommendation for mitral valvuloplasty, although recent studies have proposed earlier indication for surgical intervention...
September 19, 2018: Journal of Medical Ultrasonics
Cengiz Yılmaz, Feride Fatma Gorgulu, Fatma Yasemin Oksuzler, Muhammet Arslan, Mahmut Oksuzler, Sakir Ozgur Keskek, Ayse Selcan Koc
The purpose of this study was to evaluate the role of color Doppler sonography (CDS) in the diagnosis of extracranial vertebral artery dissections (EVADs). One hundred and fifty consecutive patients (age range 21-51 years, mean 44 years) with a clinical suspicion of vertebral artery dissection (VAD) were included in this study. All patients underwent CDS of vertebral arteries as the first-line imaging modality. Cervical T1-weighted fat-saturated axial MR images served as the gold standard. Of the 150 patients with a clinical suspicion of VAD, 27 patients were ultimately diagnosed with EVADs based on fat-saturated T1-weighted MR imaging...
September 5, 2018: Journal of Medical Ultrasonics
Hiroki Sakaki, Mototaka Arakawa, Satoshi Yashiro, Yusuke Todate, Yasushi Ishigaki, Hiroshi Kanai
PURPOSE: To develop methods for noninvasively and quantitatively measuring blood glucose levels. METHODS: In the present study, we evaluated the degree of red blood cell (RBC) aggregation at a low shear rate robustly by introducing two new parameters determined from changes in the scattering power spectrum of the echoes from the intravascular lumen before and after cessation of blood flow. We also considered the clinical significance of these parameters and the change in sizes estimated by the conventional method by comparing them with the blood glucose level obtained just before the ultrasonic measurements...
August 30, 2018: Journal of Medical Ultrasonics
Satoshi Tabako, Masahiko Harada, Kunio Sugiyama, Hiroshi Ohara, Takanori Ikeda
BACKGROUND: The pathogenesis of left ventricular (LV) dysfunction in diabetes has been attracting attention. It has been reported that LV longitudinal systolic myocardial function determined by speckle tracking echocardiography (STE) is associated with diabetic polyneuropathy (DPN). However, the relationship between the severity of peripheral neuropathy and LV myocardial dysfunction is unknown. This study examined the relationship between the severity of DPN and echocardiographic parameters as well as clinical features...
August 28, 2018: Journal of Medical Ultrasonics
Toshimitsu Tsugu, Yuji Nagatomo, Yuki Nakajima, Toshimi Kageyama, Yushi Akise, Jin Endo, Yuji Itabashi, Mitsushige Murata, Hideo Mitamura
Abiraterone is an agent effective for castration-resistant prostate cancer, but there have been no reports of cardiotoxic effects inducing cardiomyopathy, to our knowledge. We present a case of an 86-year-old man with castration-resistant prostate cancer treated with abiraterone. He had received an androgen receptor antagonist (bicalutamide) and a gonadotropin-releasing hormone antagonist (degarelix) for 3 years. These agents were changed to enzalutamide due to elevation of plasma prostate-specific antigen level of 129 ng/mL...
August 27, 2018: Journal of Medical Ultrasonics
Toshimitsu Tsugu, Yuji Nagatomo, Tomohiko Tanigawa, Jin Endo, Yuji Itabashi, Mitsushige Murata, Hideo Mitamura
To our knowledge, only 15 cases of delayed traumatic hemopericardium resulting from non-penetrating chest trauma have been reported. We present the case of a 63-year-old man with delayed hemopericardium, 2 months after striking the anterior chest on a mailbox when he fell down three steps during a postal delivery. Our case and review of the previously reported cases suggest that some cases might show quite slow progression of blood accumulation. Therefore, careful observation of patients who have experienced blunt trauma of the anterior chest is necessary...
August 9, 2018: Journal of Medical Ultrasonics
Kazuya Mimura, Masayuki Endo, Keiko Matsuoka, Takuji Tomimatsu, Yuko Tazuke, Hiroomi Okuyama, Makoto Takeuchi, Tadashi Kimura
Congenital rachischisis and brachioesophagus with secondary intrathoracic stomach, which is described as "serpentine-like syndrome", is a very rare condition. We report the prenatal findings of serpentine-like syndrome in a fetus at 18 weeks of gestation. The stomach was entirely elevated into the thoracic area, but the liver retained its normal position. Our initial diagnosis was isolated left congenital diaphragmatic hernia (CDH). At 20 weeks of gestation, the pregnancy was terminated, and a male newborn weighing 338 g was vaginally delivered...
August 9, 2018: Journal of Medical Ultrasonics
Jieun Byun, Kyoung Won Kim, Sang Hyun Choi, Sunyoung Lee, Jeongjin Lee, Gi Won Song, Sung Gyu Lee
PURPOSE: To determine indirect Doppler ultrasound (DUS) abnormalities associated with significant portal vein (PV) stenosis (PVS) in recipients of liver transplantation (LT). METHODS: This retrospective study was approved by our institutional review board. Between February 2006 and May 2017, 41 LT recipients were diagnosed with significant PVS, defined as having more than 50% narrowing of PV diameter for any reason, including thrombosis or flow disturbance associated with prominent collateral vessels on portal venography...
August 9, 2018: Journal of Medical Ultrasonics
Ryuhei Nagai, Susumu Miyashita, Susumu Murata, Yuichiro Takahashi, Atsushi Tajima, Sumito Nagasaki, Mayumi Takano, Masahiko Nakata
PURPOSE: To assess the accuracy of automated fetal heart rate measurement using two-dimensional tracking (AutoFHR) by comparison with the conventional free-angle M-mode (M-mode) and pulsed-waved Doppler (PWD) methods. METHODS: A multicenter prospective comparative study was conducted. AutoFHR is a novel technique for the automatic calculation of fetal heart rate using a two-dimensional speckle-tracking method. The fetal heart rate (FHR) obtained by AutoFHR was compared with that obtained by the conventional M-mode and PWD...
July 30, 2018: Journal of Medical Ultrasonics
Aya Sawa, Tatsuhiko Ikeda, Emika Ichioka, Yukiko Tsushima, Akiko Iguchi-Manaka, Hiroko Bando, Yuzuru Kondo, Hisato Hara
Giant cell tumors of soft tissue (GCT-ST) arising in the breast are extremely rare. Herein, we report a case of a 45-year-old woman with a 5-cm mass in her left breast. Ultrasonography revealed a mainly well-circumscribed mass that contained a cystic lesion. Magnetic resonance imaging showed a fibrous capsule-covered mass that contained a high-intensity area, suggesting hemorrhaging. Ultrasound-guided core needle biopsy (CNB) revealed mononuclear histiocytic cells with a round shape or spindled appearance that was mixed with multinucleated giant cells...
July 30, 2018: Journal of Medical Ultrasonics
Hiroki Suhara, Yoshiki Hirooka, Hiroki Kawashima, Eizaburo Ohno, Takuya Ishikawa, Masanao Nakamura, Ryoji Miyahara, Masatoshi Ishigami, Senju Hashimoto, Hidemi Goto
PURPOSE: Abdominal ultrasound (US) can visualize the esophagogastric junction (EGJ) as a hyperechoic area in the dorsal portion of the lateral segment of the liver. We prospectively evaluated the EGJ using US elastography (US-EG) in patients with reflux esophagitis (RE) to examine prediction of distal esophageal function. METHODS: Of 108 patients undergoing US-EG and esophagogastroduodenoscopy, 102 in whom the EGJ was observed for ≥ 15 s were included. The subjects were divided into a RE group (n = 41, Grade M/A/B:24/13/4 according to modified Los Angeles Classification) and a non-RE group (n = 61)...
July 24, 2018: Journal of Medical Ultrasonics
Hitoshi Yoshimura, Tadashi Okano, Kentaro Inui, Hiroaki Nakamura
Intravesical bacillus Calmette-Guerin (BCG) therapy is an effective and safe immunotherapy for superficial bladder cancer. However, reactive arthritis (ReA) is reported as an adverse event in about 0.5-1% of patients receiving intravesical BCG therapy. ReA is known as a kind of spondyloarthritis, the main pathological finding of which is enthesitis. Here we report a patient with ReA induced by intravesical BCG therapy for bladder cancer, in whom the diagnosis of ReA was supported by ultrasonographic findings of enthesitis and synovitis...
July 10, 2018: Journal of Medical Ultrasonics
Hiroyuki Hachiya
No abstract text is available yet for this article.
July 2018: Journal of Medical Ultrasonics
Takahito Nishihira, Hidehiro Takekawa, Keisuke Suzuki, Ayano Suzuki, Yuka Tsukahara, Kentaro Iizuka, Haruki Igarashi, Akio Iwasaki, Madoka Okamura, Koichi Hirata
PURPOSE: The acceleration time (AcT) ratio of the internal carotid artery (ICA) is increased in ICA stenosis. However, there are few reports that have directly compared the AcT ratio to digital subtraction angiography (DSA) findings. METHODS: We evaluated 177 vessels with DSA and carotid artery ultrasonography. The AcT ratio was calculated as AcT of the ICA (ICA-AcT)/AcT of the ipsilateral common carotid artery (CCA). We evaluated the correlation of DSA-NASCET stenosis with the origin of the ICA or the peak systolic velocity (ICApsv) in the stenotic region, ICApsv/peak systolic velocity of the CCA (CCApsv), ICA-AcT, and AcT ratio...
July 2018: Journal of Medical Ultrasonics
Yumiko Yamanaka, Hideaki Ishida, Hiroko Naganuma, Tomoya Komatsuda, Hideaki Miyazawa, Takaharu Miyauchi, Satoshi Takahashi, Tomoki Tozawa, Katsuhiko Enomoto
Splenic artery pseudoaneurysm (SAPA) is a relatively infrequently encountered but clinically important vascular change, because it carries a high risk of rupture that warrants prompt treatment regardless of its size. Thus, sufficient knowledge is indispensable when seeing chronic pancreatitis patients or post-traumatic patients. Here, we report two such cases. The first case was a 52-year-old woman known to have chronic pancreatitis who presented with hematemesis and hemodynamic instability in which X-ray computed tomography (CT) and color Doppler sonography (CDS) had difficulty visualizing slow blood flow in SAPA, but superb microvascular imaging (SMI) clearly demonstrated the slow blood flow in SAPA, prompting our therapeutic decision to perform rapid embolization...
July 2018: Journal of Medical Ultrasonics
Bülent Çekiç, Ömer Tarık Selçuk, İclal Erdem Toslak, Üstün Osma, Hülya Eyigör, Muhammed Kazım Erol
PURPOSE: To evaluate extraocular orbital vessels with color Doppler ultrasound (CDU) and investigate the effects of severe obstructive sleep apnea (OSA) on retrobulbar blood flow. METHODS: Between February 2014 and September 2015, 30 patients with severe OSA (apnea-hypopnea index (AHI) > 30) and 28 controls were prospectively included in this study. Intraocular pressure (IOP) was measured with a Goldmann applanation tonometer, and CDU was used to evaluate the retrobulbar vessels...
July 2018: Journal of Medical Ultrasonics
Shuhei Nishigori, Kazushi Numata, Kuniyasu Irie, Hiroyuki Fukuda, Makoto Chuma, Shin Maeda
PURPOSE: We evaluated the efficacy of fusion imaging combining contrast-enhanced ultrasonography (CEUS) images and arterial phase contrast-enhanced CT (CECT) or hepatobiliary phase magnetic resonance imaging with gadolinium ethoxybenzyl diethylenetriamine pentaacetic acid (EOB-MRI) images for the early evaluation of the effectiveness of radiofrequency ablation (RFA) for small hypervascular hepatocellular carcinoma (HCC) with iso-echoic or unclear margins on conventional US. METHODS: Forty HCCs (22 iso-echoic and 18 unclear margin lesions) with mean diameters of 13...
July 2018: Journal of Medical Ultrasonics
Meng Xie, Xuyin Zhang, Xiaodan Zhang, Wenping Wang, Keqin Hua
OBJECTIVES: The aim of this study was to evaluate the stiffness variation of the levator ani in patients with stage I/II pelvic organ prolapse (POP) before and after Kegel exercises by transperineal elastography. METHODS: A total of 20 patients who were diagnosed with staged I/II POP underwent conventional transperineal ultrasound and elastography. For each patient, the levator ani was located and evaluated in the state of Valsalva. After Kegel exercises for 12 weeks, transperineal ultrasound and elastography were repeated...
July 2018: Journal of Medical Ultrasonics
Sedat Giray Kandemirli, Zuhal Bayramoglu, Emine Caliskan, Zeynep Nur Akyol Sari, Ibrahim Adaletli
OBJECTIVE: Hashimoto's thyroiditis is the most common autoimmune thyroid disorder in the pediatric age range. Measurement of thyroid gland size is an essential component in evaluation and follow-up of thyroid pathologies. Along with size, tissue elasticity is becoming a more commonly used parameter in evaluation of parenchyma in inflammatory diseases. The aim of the current study was to assess thyroid parenchyma elasticity by shear-wave elastography in pediatric patients with Hashimoto's thyroiditis; and compare the elasticity values to a normal control group...
July 2018: Journal of Medical Ultrasonics
Harun Arslan, Alpaslan Yavuz, Ferda İlgen, Abdurrahman Aycan, Mesut Ozgokce, Hüseyin Akdeniz, Abdussamet Batur
OBJECTIVES: The aim of the present study was to quantify the stiffness of the median nerve (MN) at the carpal tunnel inlet by acoustic radiation force impulse (ARFI) elastography and to evaluate whether ARFI can be used in diagnosis and staging of carpal tunnel syndrome (CTS). METHODS: Sonographic examinations of 96 wrists in 50 patients were included in the study. The cross-sectional area and stiffness of the MN were quantitatively measured by B-mode ultrasonography (USG) and ARFI...
July 2018: Journal of Medical Ultrasonics
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