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Journal of Medical Ultrasonics

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https://www.readbyqxmd.com/read/28097609/a-case-of-a-quadricuspid-aortic-valve-identified-preoperatively-using-transthoracic-echocardiography
#1
Takanori Kono, Takeshi Oda, Keiichi Akaiwa, Katsuhiko Nakamura, Hiroyuki Tanaka
Quadricuspid aortic valve is an extremely rare congenital heart anomaly that often causes valve incompetence, requiring surgical intervention. Care must be taken to avoid surgical complications in patients with quadricuspid aortic valve; thus, preoperative diagnosis is important. A 76-year-old man presented with exertional dyspnea due to aortic regurgitation. Transthoracic and transesophageal echocardiography revealed severe aortic regurgitation caused by quadricuspid aortic valve. To avoid interference with the cardiac conduction system, we performed aortic valve replacement using an ingenious technique, in which pledgeted sutures on the accessory leaflet were placed from outside the sinus of Valsalva to above the aortic annulus...
January 18, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28084559/apodized-adaptive-beamformer
#2
Hideyuki Hasegawa
PURPOSE: A number of studies aimed at improvement of ultrasound image quality, such as spatial resolution and contrast, have been conducted. Apodization is known as an important factor that determines image quality. However, in the case of amplitude and phase estimation (APES) beamforming, a kind of adaptive beamformer that has been employed in medical ultrasound recently, only rectangular apodization has been used in the previous studies. In this study, apodization was employed in adaptive beamforming, and its effects on image quality were examined in phantom experiments...
January 13, 2017: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28039538/maternal-liver-elasticity-determined-by-acoustic-radiation-force-impulse-elastosonography-in-intrahepatic-cholestasis-of-pregnancy
#3
Orkun Cetin, Erbil Karaman, Harun Arslan, Ibrahim Akbudak, Recep Yildizhan, Ali Kolusari
PURPOSE: Intrahepatic cholestasis of pregnancy (ICP) is a pregnancy-specific liver disorder characterized by maternal pruritus and impaired liver function. The objective of the study was to evaluate maternal liver elasticity by acoustic radiation force impulse (ARFI) elastosonography in ICP and to compare it with that in healthy pregnant women. METHODS: This descriptive, case-control study consisted of 33 women with healthy pregnancies and 22 women with ICP in the third trimester of gestation...
December 30, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28012088/ultrasound-speckle-reduction-based-on-fractional-order-differentiation
#4
Dangguo Shao, Ting Zhou, Fan Liu, Sanli Yi, Yan Xiang, Lei Ma, Xin Xiong, Jianfeng He
PURPOSE: Ultrasound images show a granular pattern of noise known as speckle that diminishes their quality and results in difficulties in diagnosis. To preserve edges and features, this paper proposes a fractional differentiation-based image operator to reduce speckle in ultrasound. METHODS: An image de-noising model based on fractional partial differential equations with balance relation between k (gradient modulus threshold that controls the conduction) and v (the order of fractional differentiation) was constructed by the effective combination of fractional calculus theory and a partial differential equation, and the numerical algorithm of it was achieved using a fractional differential mask operator...
December 23, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27990593/is-the-unaffected-eye-really-unaffected-color-doppler-ultrasound-findings-in-unilaterally-active-central-serous-chorioretinopathy
#5
Iclal Erdem Toslak, Muhammet Kazim Erol, Devrim Toslak, Bulent Cekic, Mehtap Barc Ergun, Jennifer E Lim-Dunham
PURPOSE: To evaluate ocular hemodynamic changes using color Doppler ultrasonography imaging (CDI) with an emphasis on unaffected eyes of patients with central serous chorioretinopathy (CSC). METHODS: Twenty-seven patients with active CSC and 25 controls were analyzed using spectral domain-optical coherence tomography (SD-OCT) and CDI for choroidal imaging and evaluation of retrobulbar vessels, respectively. RESULTS: Resistive index (RI), pulsatility index (PI), and peak systolic velocity (PSV) of the ophthalmic artery (OA) and PSV, end-diastolic velocity (EDV), and mean velocity (Vmean) of the central retinal artery (CRA) in the patient group were less than those in the control group...
December 18, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27987045/continuous-fetal-head-flexion-as-a-marker-for-prenatal-diagnosis-of-lethal-multiple-pterygium-syndrome-a-case-report
#6
Akihiro Hasegawa, Mieko Hanaoka, Takeshi Murakoshi
Lethal multiple pterygium syndrome (LMPS) is a fatal hereditary disease associated with abnormalities such as pterygium-induced congenital contractures. Fetal hydrops is present in more than half of all patients with LMPS, and all patients with LMPS are either stillborn or die in the early neonatal period. Ultrasonography findings for the prenatal diagnosis of LMPS include the detection of cutaneous webbing at multiple joints, multiple joint contractures, absent limb movement, and increased nuchal translucency...
December 16, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27933441/multimodality-imaging-to-assess-immediate-response-following-irreversible-electroporation-in-patients-with-malignant-hepatic-tumors
#7
Katsutoshi Sugimoto, Fuminori Moriyasu, Kazuhiro Saito, Yoshiyuki Kobayashi, Takao Itoi
PURPOSE: To assess the diagnostic accuracy of contrast-enhanced ultrasound (CEUS), contrast-enhanced multiphase CT (CECT), and gadoxetic acid-enhanced MRI (EOB-MRI) in identifying residual tumor in the subacute follow-up of patients with malignant hepatic tumors treated by irreversible electroporation (IRE). METHODS: We enrolled 16 patients with 21 hepatic lesions treated by IRE and examined by CEUS and CECT at 1 day after IRE and by EOB-MRI at 7 days after IRE...
December 8, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27933440/modern-role-of-clinical-ultrasound-in-liver-abscess-and-echinococcosis
#8
REVIEW
Rita Barosa, João Pinto, Ana Caldeira, Eduardo Pereira
In the Western world, liver abscesses are predominantly of pyogenic origin and can present a wide range of ultrasonographic features, from a solid mass to a cystic cavity. Amoebic abscesses are endemic in tropical areas and typically round single lesions. Echinococcal cyst is diagnosed by ultrasound (US). Serology is particularly useful when pathognomonic US features are absent. Treatment is determined based on the WHO ultrasonographic classification, and puncture, aspiration, injection, re-aspiration (PAIR) is a US-guided therapeutic option...
December 8, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27933439/measurement-of-carotid-pulse-wave-velocity-using-ultrafast-ultrasound-imaging-in-hypertensive-patients
#9
Xiaopeng Li, Jue Jiang, Hong Zhang, Hua Wang, Donggang Han, Qi Zhou, Ya Gao, Shanshan Yu, Yanhua Qi
PURPOSE: The study aimed to assess the utility of ultrafast ultrasound imaging for evaluation of carotid pulse wave velocity (PWV) in newly diagnosed hypertension patients. METHODS: This prospective non-randomized study enrolled 90 hypertensive patients in our hospital from September to December 2013 as a hypertension group. An age- and sex-matched cohort of 50 healthy adults in our hospital from September to December 2013 was also included in the study as a control group...
December 8, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27933438/acoustic-radiation-force-impulse-arfi-elastography-in-the-evaluation-of-renal-parenchymal-stiffness-in-patients-with-ureteropelvic-junction-obstruction
#10
Hatice Arioz Habibi, Rumeysa Yasemin Cicek, Sedat Giray Kandemirli, Emel Ure, Ayse Kalyoncu Ucar, Mine Aslan, Salim Caliskan, Ibrahim Adaletli
PURPOSE: To investigate the role of acoustic radiation force impulse (ARFI) elastography in the detection of renal parenchymal damage in kidneys with and without ureteropelvic junction obstruction (UPJO). METHODS: Twenty-five pediatric patients with a diagnosis of UPJO who underwent surgery and 15 pediatric patients with conservatively managed UPJO were prospectively evaluated with ARFI elastography. Sixteen healthy volunteers constituted the control group. Shear wave velocity (SWV) measurements in the upper, mid, and lower poles of the affected kidney were performed...
December 8, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27909829/contrast-enhanced-ultrasound-in-diagnosis-of-primary-hepatic-angiosarcoma
#11
Wenwu Ling, Tingting Qiu, Lin Ma, Chuanfen Lei, Yan Luo
Primary hepatic angiosarcoma (PHA) is a rare malignant tumor that occurs mainly in the elderly, with almost no specific symptoms or tumor markers. Information on the imaging characteristics of this tumor is limited due to its rarity. Therefore, it is difficult to diagnose PHA. So far, its definite diagnosis depends on histopathologic examination combined with immunohistochemical results. Patients with PHA have a poor prognosis in spite of surgical resection of this tumor. In this case report, we present a 72-year-old woman with PHA, focusing on the imaging features of this tumor, especially its enhancement pattern on contrast-enhanced ultrasound images...
December 1, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27858229/usefulness-of-three-dimensional-transesophageal-echocardiography-for-diagnosis-of-hemolytic-anemia-due-to-inverted-internal-felt-strip-after-surgery-for-aortic-dissection
#12
Takeshi Oda, Hiroshi Yasunaga, Yasuyuki Zaima, Akiko Arimura, Shinichi Imai, Ryo Kanamoto, Hayato Fukuda, Eiji Nakamura, Hideki Tashiro, Shigeaki Aoyagi
Felt strips are widely used for reinforcement of the aortic stump in surgery for aortic dissection (AD). Postoperative hemolytic anemia (HA) due to an inverted internal felt strip at the aortic stump fixation for AD is extremely rare. A 70-year-old woman underwent ascending aorta replacement for acute type A AD, where both proximal and distal anastomotic sites were reinforced with Teflon felt strips. A week later, macroscopic hematuria and HA emerged. Three-dimensional transesophageal echocardiography (3D-TEE) demonstrated that the proximal inner felt strip turned up and protruded into the aortic inner lumen...
November 17, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27858228/prenatal-diagnosis-of-abnormal-umbilical-cord-insertion-a-rare-case-of-furcate-insertion
#13
Yasuyuki Fujita, Yasuo Yumoto, Kiyoko Kato
Furcate insertion (FI) is an extremely rare abnormality of umbilical cord insertion. One of the complications associated with FI is hemorrhage from the umbilical vein at the site of FI of the umbilical cord, which can cause sudden intrauterine fetal death. Because of its rarity, no prenatal diagnosis of FI has been reported. A 31-year-old woman at 34 weeks' gestation was referred to us for suspected abnormal cord insertion. Ultrasonography showed normal fetal growth and amniotic fluid volume, with no fetal anomalies...
November 17, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27837395/evaluation-of-sorafenib-for-advanced-hepatocellular-carcinoma-with-low-%C3%AE-fetoprotein-in-arrival-time-parametric-imaging-using-contrast-enhanced-ultrasonography
#14
Kazue Shiozawa, Manabu Watanabe, Takashi Ikehara, Ryo Shimizu, Mie Shinohara, Yoshinori Igarashi, Yasukiyo Sumino
PURPOSE: To determine the usefulness of arrival time parametric imaging (AtPI) using contrast-enhanced ultrasonography (CEUS) with Sonazoid in evaluating early response to sorafenib for hepatocellular carcinoma (HCC). METHODS: Twenty-one advanced HCC patients with low α-fetoprotein (AFP) levels (≤35 ng/ml) who received sorafenib for at least 4 weeks were enrolled in this study. CEUS was performed before and 2 weeks after treatment, and the images of the target lesion in the arterial phase were analyzed by AtPI...
November 11, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27832403/intrapartum-transperineal-ultrasound-for-evaluating-uterine-contraction-intensity-in-the-second-stage-of-labor
#15
Miyuki Muramoto, Kiyotake Ichizuka, Junichi Hasegawa, Masamitsu Nakamura, Satoshi Dohi, Hiroshi Saito, Masaaki Nagatsuka
PURPOSE: To clarify whether intrapartum transperineal ultrasound (ITU) can be used to evaluate uterine contraction intensity, and whether the intensity is associated with the duration of the second stage. METHODS: A prospective observational study was performed involving 86 women with a normal singleton term fetus and more than three contractions every 10 min. ITU was performed for contractile and non-contractile periods of labor at the beginning of the second stage, and one representative "angle of progression (AoP)" image was selected for each period...
November 10, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27830422/isolated-breast-vasculitis-manifested-as-breast-edema-with-suggestive-sonographic-findings-a-case-report-with-imaging-findings
#16
Ji Young Lee, Mee Joo
Early diagnosis of breast vasculitis (BV) is difficult because this condition is rare and occasionally mimics breast cancer clinically or radiologically. It may present as systemic disease or as an isolated lesion in the breast, without systemic evidence. When vasculitis appears in the breast, it also might manifest as a tumor-like lesion, and in previous cases, tissue acquisition was needed for confirmation of the diagnosis because of BV's resemblance to inflammatory breast cancer. We report a case of isolated BV that was suspected of being inflammatory breast cancer clinically, but manifested as bilateral breast edema on mammography...
November 9, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27807689/real-time-three-dimensional-echocardiography-of-left-atrial-volume-and-function-in-patients-with-severe-multi-vessel-coronary-artery-disease
#17
Lingjie Yang, Li Ma, Yanhong Li, Yuming Mu, Liyun Liu
PURPOSE: To evaluate the changes in left atrial (LA) volume and function in patients with severe multi-vessel coronary artery disease (CAD) by real-time three-dimensional echocardiography (RT-3DE). METHODS: One hundred and eight subjects were stratified based on coronary angiography (CAG) imaging, comprising 48 patients with severe multi-vessel CAD, 31 patients with severe single-vessel CAD, and 29 controls. RT-3DE was performed in all groups. LA volume parameters were measured...
November 2, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27796515/improving-beamforming-performance-by-phased-synthetic-aperture-imaging-in-medical-ultrasound
#18
Masume Sadeghi, Ali Mahloojifar
PURPOSE: Ultrasound image quality is related to the receive beamformer's ability. Delay and sum (DAS), a conventional beamformer, is combined with the coherence factor (CF) technique to suppress side lobe levels. The purpose of this study is to improve these beamformer's abilities. METHODS: It has been shown that extension of the receive aperture can improve the receive beamformer's ability in radar studies. This paper shows that the focusing quality of CF and CF+DAS in medical ultrasound can be increased by extension of the receive aperture's length in phased synthetic aperture (PSA) imaging...
October 28, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/27787642/differential-diagnosis-of-idiopathic-granulomatous-mastitis-and-breast-cancer-using-acoustic-radiation-force-impulse-imaging
#19
Memik Teke, Fatma Teke, Bircan Alan, Ahmet Türkoğlu, Cihad Hamidi, Cemil Göya, Salih Hattapoğlu, Metehan Gumus
PURPOSE: Differentiation of idiopathic granulomatous mastitis (IGM) from carcinoma with routine imaging methods, such as ultrasonography (US) and mammography, is difficult. Therefore, we evaluated the value of a newly developed noninvasive technique called acoustic radiation force impulse imaging in differentiating IGM versus malignant lesions in the breast. METHODS: Four hundred and eighty-six patients, who were referred to us with a presumptive diagnosis of a mass, underwent Virtual Touch tissue imaging (VTI; Siemens) and Virtual Touch tissue quantification (VTQ; Siemens) after conventional gray-scale US...
October 27, 2016: Journal of Medical Ultrasonics
https://www.readbyqxmd.com/read/28070845/changes-in-the-roles-of-transrectal-ultrasonography-for-the-diagnosis-of-prostate-cancer
#20
EDITORIAL
Atsushi Ochiai
No abstract text is available yet for this article.
January 2017: Journal of Medical Ultrasonics
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