Preliminary study on the separation of specular reflection and backscattering components using synthetic aperture beamforming
ConclusionA new technique for separation of the reflection and backscattering components using synthetic aperture beamforming with a transmit beam featuring a large focal distance was proposed. The technique demonstrated a partial separation of the reflection and backscattering components, which potentially may be used to estimate surface roughness. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 3, 2020 Category: Radiology Source Type: research

Advances in ultrasound elastography for nonalcoholic fatty liver disease
AbstractThe prevalence of nonalcoholic fatty liver disease (NAFLD) and nonalcoholic steatohepatitis (NASH) has increased rapidly worldwide, making NAFLD/NASH an important global health problem from both a medical and socioeconomic standpoint. NAFLD is also regarded as a liver component of metabolic syndrome and is reported to be associated with the risk factors for metabolic syndrome. It has been suggested that NAFLD/NASH be recognized both as a liver-specific disease and as an early mediator of systemic diseases. Liver biopsy is recommended as the gold standard method for the diagnosis of NASH and for the staging of liver...
Source: Journal of Medical Ultrasonics - August 2, 2020 Category: Radiology Source Type: research

Ultrasonographic assessment of fetal thyroid in Japan: thyroid circumference and distal femoral and proximal tibial ossification
ConclusionWe generated a GA-dependent FTC nomogram for Japanese fetuses. We also confirmed the appearance timing of fetal distal femoral and proximal tibial ossification to assess bone maturation. These assessments may be very useful for evaluating fetal thyroid function in Japan. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - July 30, 2020 Category: Radiology Source Type: research

Flickering sign on superb microvascular imaging in patients with infantile hypertrophic pyloric stenosis
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - July 29, 2020 Category: Radiology Source Type: research

A new index of ultrasonography for estimating cerebral circulation in newborn infants
AbstractPurposeTo quantitatively estimate the influence of ductal shunt on cerebral blood flow and establish a new index of ultrasonography for estimating cerebral circulation without the influence of ductal shunt in newborn infants.MethodsWe retrospectively examined the records of anterior cerebral artery (ACA) and left pulmonary artery (LPA) blood flow velocity curves recorded by pulsed Doppler ultrasonography within 6  h after birth in 123 newborn infants without asphyxia (normal group) and in 31 newborn infants with asphyxia (asphyxia group).ResultsIn the normal group, the resistance index (RI) of the ACA showed a...
Source: Journal of Medical Ultrasonics - July 27, 2020 Category: Radiology Source Type: research

The utility of shear wave elastography in the evaluation of muscle stiffness in patients with cerebral palsy after botulinum toxin A injection
AbstractPurposeThe first aim of this study was to evaluate changes in the stiffness of the medial gastrocnemius muscle (GM) after a botulinum toxin A (BoNT-A) injection in children with cerebral palsy (CP) using shear wave elastography (SWE). We also wanted to investigate the usability of SWE for evaluating spasticity in a clinical setting. The second aim of this study was to show how treatment of the gastrocnemius muscle spasticity caused a change in the elasticity of the anterior tibial (TA) muscle.MethodsTwenty-four pediatric patients diagnosed with a spastic type of CP, who were scheduled to receive a BoNT-A injection ...
Source: Journal of Medical Ultrasonics - July 23, 2020 Category: Radiology Source Type: research

Normative values of pancreas stiffness by shear wave elastography in healthy children and adolescents
ConclusionNormal elasticity and velocity values were defined for the pancreas with SWE in children. Pancreatic stiffness does not significantly change among pancreas parts, but it increases with the transition from childhood to adolescence. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - July 15, 2020 Category: Radiology Source Type: research

Role of endoscopic ultrasound for gallbladder disease
AbstractEndoscopic ultrasonography (EUS) has excellent spatial resolution and allows more detailed examination than abdominal ultrasonography (US) in terms of qualitative diagnosis of tumors and evaluation of tumor invasion depth. To understand the role of EUS in gallbladder disease, we need to understand the normal gallbladder wall structure and how to visualize it on EUS. In addition, gallbladder lesions can be classified into two broad categories: protuberant and wall-thickening lesions. Here, the features on EUS were outlined. We also outlined the current status of EUS-FNA for gallbladder lesions as there have been sca...
Source: Journal of Medical Ultrasonics - July 12, 2020 Category: Radiology Source Type: research

Contrast-enhanced ultrasound as noninvasive diagnostic images that anyone can easily understand
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 30, 2020 Category: Radiology Source Type: research

Ultrasonographic diagnosis of pancreatic diseases: this is all you need
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 30, 2020 Category: Radiology Source Type: research

Correction to: Intervendor variability of carotid intima –media thickness measurement: validation study using newly developed ultrasound phantom
In the Original publication of the article Table 3 was published incorrectly. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 30, 2020 Category: Radiology Source Type: research

What is the role of measuring shear wave dispersion using shear wave elastography in pancreatic parenchyma?
The objective of this study was to investigate the reliability and clinical significance of SWD in pancreatic screening.MethodsSWE and SWD were measured in 76 patients examined by US in pancreatic screenings performed between November 2017 and November 2018. The median pancreatic elastic modulus (PEM) and dispersion slope were obtained from at least five measurements. The reproducibility of these values and their correlations with patient characteristics, pancreatic echogenicity, and the pancreas-to-spleen attenuation ratio (P/S) on plain CT, which is associated with fatty change in pancreatic parenchyma, were investigated...
Source: Journal of Medical Ultrasonics - June 28, 2020 Category: Radiology Source Type: research

A case of coronary artery fistula with multiple coronary artery aneurysms diagnosed by transthoracic echocardiography
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 22, 2020 Category: Radiology Source Type: research

Comparison of sonographic findings between pediatric patients with mediastinitis and without mediastinitis after cardiovascular surgery
ConclusionAlthough our cohort was small, none of the patients without increased parasternal fat echogenicity or mediastinal fluid collection was diagnosed with mediastinitis. These sonographic findings may help identify the possible presence of mediastinitis. Ultrasound may be the modality of first choice to evaluate pediatric patients for mediastinitis after cardiovascular surgery. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 12, 2020 Category: Radiology Source Type: research

Correction to: Application of shear wave elastography and B-mode ultrasound in patellar tendinopathy after extracorporeal shockwave therapy
In the original publication of the article the Fig.  1 has been removed, as the authors did not obtain the appropriate permission from the rights holder to use the image in this article. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 10, 2020 Category: Radiology Source Type: research

The role of ultrasound imaging in operative treatment for a rare case of inferior vena cava tumor
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - May 26, 2020 Category: Radiology Source Type: research

Present status of ultrasound elastography for the diagnosis of pancreatic tumors: review of the literature
In conclusion, there are many types of elastographies and evaluation methods, and the diagnostic ability for pancreatic tumors is high for each evaluation method. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - May 21, 2020 Category: Radiology Source Type: research

Persistent left superior vena cava with absent right superior vena cava
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - May 15, 2020 Category: Radiology Source Type: research

The influence of esophagogastroduodenoscopy using carbon dioxide insufflation on abdominal ultrasonographic imaging efficiency
ConclusionThere was no difficulty in performing abdominal ultrasonography at 30  min or later following EGD with CO2 insufflation. Additionally, visualization of the head, body, and tail of the pancreas as well as the extrahepatic bile duct was improved in some patients. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - May 11, 2020 Category: Radiology Source Type: research

Hereditary hemorrhagic telangiectasia: how to efficiently detect hepatic abnormalities using ultrasonography
ConclusionHepatic US serves to diagnose the detailed complex hepatic changes typical of HHT, and contributes to increased diagnostic confidence of hepatic changes in HHT patients, with the most simple way not to overlook HHT-related abnormalities being to find hepatic artery dilatation. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - May 9, 2020 Category: Radiology Source Type: research

Spontaneous mitral valve perforation associated with mitral annular calcification-related calcified amorphous tumor assessed by three-dimensional transesophageal echocardiography
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 30, 2020 Category: Radiology Source Type: research

B-mode ultrasonographic diagnosis in gallbladder wall thickening
AbstractDiseases associated with gallbladder wall thickening include benign entities such as adenomyomatosis of the gallbladder, acute and chronic cholecystitis, and hyperplasia associated with pancreaticobiliary maljunction, and also cancer. Unique conditions such as sclerosing cholecystitis and cholecystitis associated with immune checkpoint inhibitor treatment can also manifest as wall thickening, as in some systemic inflammatory conditions. Gallbladder cancer, the most serious disease that can show wall thickening, can be difficult to diagnose early and to distinguish from benign causes of wall thickening, contributing...
Source: Journal of Medical Ultrasonics - April 23, 2020 Category: Radiology Source Type: research

Telediagnosis system for congenital heart disease in a Japanese prefecture
ConclusionOur telediagnosis system contributed to the prenatal diagnosis of CHD and management of pregnancies in patients who were geographically remote from a tertiary hospital. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 22, 2020 Category: Radiology Source Type: research

Key factors of diastolic dysfunction and abnormal left ventricular relaxation in diabetic rats
ConclusionsBecause of the noninvasive nature of CDMM, IVPD and other conventional echocardiographic parameters can be used as reliable indicators generally for evaluating cardiac function and particularly the change in intraventricular pressure. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 17, 2020 Category: Radiology Source Type: research

Incremental diagnostic value of shear wave elastography combined with contrast-enhanced ultrasound in TI-RADS category 4a and 4b nodules
AbstractPurposeTo evaluate the diagnostic value of shear wave elastography (SWE) combined with contrast-enhanced ultrasonography (CEUS) in diagnosing thyroid imaging reporting and data system (TI-RADS) category 4a and 4b nodules.MethodsTI-RADS, SWE, and CEUS features of 71 thyroid nodules (23 benign, 48 malignant) confirmed by postoperative pathological results were retrospectively analyzed. The diagnostic efficiency of each single method and that of a combination of three methods were compared.ResultsThe sensitivity and specificity in diagnosing thyroid nodules were 70.83% and 65.22% for TI-RADS, 68.75% and 91.30% for SWE...
Source: Journal of Medical Ultrasonics - April 17, 2020 Category: Radiology Source Type: research

Endoscopic ultrasound-guided radiofrequency ablation of porcine liver
ConclusionWe performed EUS-RFA in pigs and concluded that it may be feasible to perform RFA of lesions near the stomach. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 15, 2020 Category: Radiology Source Type: research

Congenital uni-leaflet mitral valve with atrial septal defect and partial anomalous pulmonary venous drainage
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 9, 2020 Category: Radiology Source Type: research

Compromises between sonographer and doctor in ultrasound examination assessment and report generation for the sake of better team medicine
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 31, 2020 Category: Radiology Source Type: research

On the occasion of publication of the feature on differential diagnosis and treatment of hepatocellular carcinoma: the role of ultrasound
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 31, 2020 Category: Radiology Source Type: research

Covid-19
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 31, 2020 Category: Radiology Source Type: research

Current role of ultrasound in the diagnosis of hepatocellular carcinoma
This article reviews the evidence on the use of ultrasound and contrast-enhanced ultrasound with Sonazoid for the practical management of HCC. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 12, 2020 Category: Radiology Source Type: research

Vascular evaluation using transabdominal ultrasound for gallbladder polyps
AbstractUltrasound (US) is a cost-effective and noninvasive procedure without radiation exposure, with real-time evaluation and high spatial resolution. Although it is useful for the detection of gallbladder (GB) polyps, including gallbladder cancer, adenoma, and benign polyps, conventional US is insufficient for differential diagnosis because it is not capable of evaluating hemodynamic information, unlike computed tomography or magnetic resonance imaging. With recent technological advances in US equipment and contrast agents, Doppler imaging and contrast-enhanced ultrasonography (CEUS) are being used to characterize GB po...
Source: Journal of Medical Ultrasonics - March 2, 2020 Category: Radiology Source Type: research

Superb microvascular imaging compared with contrast-enhanced ultrasound to assess microvessels in thyroid nodules
ConclusionSMI-BF grade was more affected by vessels of larger inner diameter, while CEUS-EI was more affected by vessels of smaller inner diameter. SMI alone is sufficient for evaluation of blood flow in thyroid nodules, and the diagnostic value of SMI-BF of the periphery is comparable to CEUS hypoenhancement to differentiate thyroid cancer. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 2, 2020 Category: Radiology Source Type: research

Application of the Z1071 criteria: classification of axillary lymph nodes on ultrasound after neoadjuvant chemotherapy in initially node-positive breast cancer
ConclusionThe classification of six node types was associated with nodal status. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 28, 2020 Category: Radiology Source Type: research

Improvement of performance of minimum variance beamformer by introducing cross covariance estimate
ConclusionImage contrast in MV beamforming could be improved significantly by estimating “cross” covariance matrices. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 19, 2020 Category: Radiology Source Type: research

Intervendor variability of carotid intima –media thickness measurement: validation study using newly developed ultrasound phantom
ConclusionThe intervendor variability assessed using our IMT phantom was less than 0.10  mm, and the on-board vendor-specific software was shown to reduce the difference between the devices significantly compared with the vendor-independent offline software. To further improve the vender difference, adjustment by means of vendor-specific software based on a standardized IMT phantom is warranted. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 16, 2020 Category: Radiology Source Type: research

Ultrasound fusion imaging technologies for guidance in ablation therapy for liver cancer
AbstractWith advances in imaging technology, images from ultrasound (US) and computed tomography (CT) or magnetic resonance imaging (MRI) can be displayed simultaneously and in real time, according to the angle of the transducer. CT/MR –US fusion imaging improves the visualization of inconspicuous hepatocellular carcinoma (HCC) and helps us to understand the three-dimensional relationship between the liver vasculature and HCC. US fusion imaging guidance facilitates improvement in the treatment response for HCC with poor conspicu ity, and the rates of technical success of ablation and local tumor progression for incon...
Source: Journal of Medical Ultrasonics - February 7, 2020 Category: Radiology Source Type: research

Low-intensity pulsed ultrasound promotes the expression of immediate-early genes in mouse ST2 bone marrow stromal cells
ConclusionThese results suggest that LIPUS exposure significantly induces expression of IEGs such asFos andEgr1 via the MAPK/ERK pathway in ST2 BMSCs. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 4, 2020 Category: Radiology Source Type: research

Generalized coherence factor estimated from real signals in ultrasound beamforming
ConclusionWith the proposed method, generation of analytic signals at receiving elements can be omitted, and as a result, the computational load of the GCF method can be greatly reduced, while preserving the effect of reducing unnecessary signals like with the conventional method. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 30, 2020 Category: Radiology Source Type: research

A review of conventional and newer generation microwave ablation systems for hepatocellular carcinoma
AbstractAlthough microwave ablation (MWA) exhibits a high thermal efficiency, the major limitation of conventional MWA systems is the lack of predictability of the ablation zone size and shape. Therefore, a specific newer generation MWA system, The Emprint ™ Ablation System with Thermosphere™ Technology, was designed to create predictable large spherical zones of ablation that are not impacted by varying tissue environments. The time required for ablation with MWA systems is short, and the shape of the necrosis is elliptical with the older systems and spherical with the new system. In addition, because MWA has ...
Source: Journal of Medical Ultrasonics - January 19, 2020 Category: Radiology Source Type: research

Application of new ultrasound techniques for focal liver lesions
AbstractUltrasonography (US) has the overwhelming advantages of not entailing radiation exposure and being a noninvasive, real-time, convenient, easy-to-perform, and relatively inexpensive imaging modality. It is used as the first-line imaging modality for screening, detection, and diagnosis of focal liver lesions (FLLs) [small hepatocellular carcinomas (HCCs), in particular]. However, with the increasing demand for accurate and early diagnosis of small HCCs, newer radiologic methods need to be explored to overcome certain limitations of US. For example, the imaging is easily negatively affected by the presence of gas, rib...
Source: Journal of Medical Ultrasonics - January 15, 2020 Category: Radiology Source Type: research

Transvaginal ultrasound features of the residual cervix in pregnancy after radical trachelectomy
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 15, 2020 Category: Radiology Source Type: research

Suitable methods of measuring acceleration time in the diagnosis of internal carotid artery stenosis
ConclusionWe demonstrated the usefulness of the conventional procedure for diagnosing stenosis of ICA origin using AcT and showed that the AcT ratio was a more beneficial parameter than AcT. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 6, 2020 Category: Radiology Source Type: research

Comparison of radial extracorporeal shockwave therapy with ultrasound therapy in patients with lateral epicondylitis
AbstractPurposePatients suffering from lateral epicondylitis exhibit diminished mobility due to pain. The aim of the study was to compare the efficacy of both shockwave and ultrasound therapies in patients with lateral epicondylitis.MethodsThe shockwave group consisted of 117 patients, 63 patients constituted the ultrasound group, and 18 patients made up the control group. The “University of Peloponnese Pain, Functionality and Quality of Life Questionnaire” was used for the evaluation of pain, functionality, and quality of life on a five-point Likert scale, pre-treatment, post-treatment, and at 4-week follow-up...
Source: Journal of Medical Ultrasonics - January 6, 2020 Category: Radiology Source Type: research

Reliability and characteristics of ultrasound measurement of fetal umbilical venous blood flow volume according to the site of measurement
ConclusionUVFV measurement showed high intra-rater and inter-rater reliability at FL and IA, but the variance of measurements at FL became large as the measured value increased. Properties of different measurement sites should be considered when evaluating UVFV. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 6, 2020 Category: Radiology Source Type: research

Modified high-resolution wavenumber analysis for detection of pulse wave velocity using coefficient of variation of arterial wall acceleration waveforms
ConclusionThe results of the simulations and in vivo experiments indicated that the modified high-resolution wavenumber analysis method was less affected by the reflected waves and more accurate in estimation of PWVs of both the forward and reflected waves. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 1, 2020 Category: Radiology Source Type: research

Specialist pride
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - December 31, 2019 Category: Radiology Source Type: research

On the occasion of publication of the feature on echocardiographic management of valvular heart disease
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - December 31, 2019 Category: Radiology Source Type: research

Characteristics and editorial policy of Journal of Medical Ultrasonics (JMU)
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - December 31, 2019 Category: Radiology Source Type: research