Ultrasonographic evaluation of pelvic floor structure at antepartum and postpartum periods using three-dimensional transperineal ultrasound
AbstractPurposeTo examine the changes in the pelvic floor structure caused by pregnancy and delivery.MethodsA total of 141 nulliparous women were examined with three-dimensional transperineal ultrasound (3D-TPU) at the 24th and 34th weeks of gestation, 5th day postpartum, and 1  month postpartum. Puborectalis muscle trauma was diagnosed and the area of levator hiatus (ALH) was measured.ResultsOne hundred and five normal vaginal deliveries, 19 vacuum/forceps deliveries, and 17 cesarean deliveries were included. In the normal delivery group, the rate of puborectalis muscle trauma was low and showed no significant change...
Source: Journal of Medical Ultrasonics - May 8, 2021 Category: Radiology Source Type: research

Total atrial conduction time as a possible predictor of atrial fibrillation recurrence after catheter ablation for paroxysmal atrial fibrillation: relationship between electrical atrial remodeling and structural atrial remodeling time courses
AbstractPurposeRecently, the estimated total atrial conduction time measured using tissue Doppler imaging (PA-TDI duration) has been reported as a more accurate predictor of atrial fibrillation (AF) recurrence after catheter ablation than left atrial volume index (LAVI). The PA-TDI duration is considered to reflect electrical and structural remodeling in the right atrium (RA) and left atrium (LA). We sought to investigate the association between AF recurrence and PA-TDI duration after AF ablation.MethodsWe studied 209 patients who underwent radiofrequency ablation for paroxysmal AF and 75 patients who underwent second abla...
Source: Journal of Medical Ultrasonics - April 28, 2021 Category: Radiology Source Type: research

A new approach for quantitative assessment of fetal general movements in the early second trimester of pregnancy using four-dimensional ultrasound
AbstractPurposeComplex fetal behavior involving multiple parts of the body, called general movement (GM), has been considered an essential predictor of neurological functional development because it directly reflects the integrity of the brain and central and peripheral nervous systems. We have developed a novel method for quantitative analysis of fetal behavior using four-dimensional ultrasound (4DUS) and conducted a pilot study for quantitative assessment of fetal GM in the early second trimester.MethodsAll subjects underwent 4DUS to depict the whole fetal body, and maximum velocity (MAXV), median velocity (MV), average ...
Source: Journal of Medical Ultrasonics - April 27, 2021 Category: Radiology Source Type: research

Low-complexity generalized coherence factor estimated from binarized signals in ultrasound beamforming
ConclusionGeneralized coherence factor estimated from binarized signals exhibits excellent CNR improvement compared to DAS. CNR improvements yielded by GCFB and GCFreal may depend on the observation target; however, under the conditions of the present study, comparable performances were obtained. Because GCFB can significantly reduce the computational complexity, it is potentially applicable in clinical diagnostic equipment. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 22, 2021 Category: Radiology Source Type: research

Association of carotid ultrasonography with perioperative stroke after thoracic aortic aneurysm treatment: a retrospective study
AbstractPurposeThe purpose of this study was to verify whether carotid ultrasonography (CUS) findings could be associated with the occurrence of perioperative stroke after thoracic aortic aneurysm (TAA) treatment.MethodsPatients with TAAs who were treated by either total arch replacement or thoracic endovascular aortic repair (TEVAR) were retrospectively enrolled. Left subclavian artery (LSA) embolization and bypass surgery of the left common carotid artery (CCA) to the LSA before TEVAR were additionally performed for some patients. CUS was performed before TAA treatment to evaluate carotid atherosclerosis and flow velocit...
Source: Journal of Medical Ultrasonics - April 21, 2021 Category: Radiology Source Type: research

Methicillin-resistant Staphylococcus aureus -induced right-sided infective endocarditis detected by transthoracic echocardiography: the importance of parasternal short-axis view screening
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 21, 2021 Category: Radiology Source Type: research

Reply to the comments on our article comparison of  radial extracorporeal shockwave therapy with ultrasound therapy in patients with lateral epicondylitis
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 19, 2021 Category: Radiology Source Type: research

Comments on the article comparing radial extracorporeal shockwave therapy with ultrasound therapy in patients with lateral epicondylitis
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 19, 2021 Category: Radiology Source Type: research

Acoustic radiation force impulse under clinical conditions with single infusion of ultrasound contrast agent evoking arrhythmias in rabbit heart
AbstractPurposeWe previously reported that acoustic radiation force impulse (ARFI) with concomitant administration of perfluorobutane as an ultrasound contrast agent (UCA)-induced arrhythmias at a mechanical index (MI) of 1.8 or 4.0 in a rabbit model. The present study identified the location of arrhythmias with a MI  
Source: Journal of Medical Ultrasonics - April 10, 2021 Category: Radiology Source Type: research

Large-volume cell-free and concentrated ascites reinfusion therapy improves venous flow in patients with liver cirrhosis
AbstractPurposeHemodynamic change after total paracentesis was investigated because it might lead to various complications. Although cell-free and concentrated ascites reinfusion therapy (CART) is safer and more effective than total paracentesis in theory, hemodynamic change after CART has been never reported. And previous studies did not mention hemodynamics of the venous system.MethodsWe investigated the hemodynamic change, including that of the venous system, before and after CART using color Doppler ultrasonography and fast Fourier transform analysis. Twenty-eight patients with tensive cirrhotic ascites underwent ultra...
Source: Journal of Medical Ultrasonics - April 9, 2021 Category: Radiology Source Type: research

Everything you need to know about ultrasound for diagnosis of gallbladder diseases
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 1, 2021 Category: Radiology Source Type: research

Breast ultrasound in the age of advanced technology and artificial intelligence
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 1, 2021 Category: Radiology Source Type: research

Humans can create themselves, become individual, and have confidence by creating things
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 1, 2021 Category: Radiology Source Type: research

The feasibility of a noise elimination method using continuous wave response of therapeutic ultrasound signals for ultrasonic monitoring of high-intensity focused ultrasound treatment
ConclusionsThe proposed method can be applicable even if homogeneous tissues or organs move axially or laterally to the direction of HIFU exposure because of breathing. A condition under which the proposed algorithm failed was when instantaneous tissue changes such as cavitation bubble generation occurred in the tissue, at which time the reflected continuous wave response became less steady. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 1, 2021 Category: Radiology Source Type: research

Renal vein measurement using ultrasonography in patients with cirrhotic ascites and congestive heart failure
AbstractPurposeAscites can cause compression of the inferior vena cava (IVC), leading to increased renal venous pressure and renal congestion. Previously, the left renal vein diameter in liver cirrhosis patients with ascites was measured using computed tomography, showing that enlargement of the left renal vein diameter affects the prognosis. Herein, the diameter and flow velocity of the renal veins were measured using ultrasonography.MethodsAbdominal ultrasonography was performed on 186 patients. The patients were divided into four groups: normal liver (n = 102), liver cirrhosis (LC) without ascites (n&thins...
Source: Journal of Medical Ultrasonics - March 25, 2021 Category: Radiology Source Type: research

A study on the inconsistency of arterial phase hypervascularity detection between contrast-enhanced ultrasound using sonazoid and gadolinium-ethoxybenzyl-diethylenetriamine penta-acetic acid magnetic resonance imaging of hepatocellular carcinoma lesions
ConclusionsSCEUS and EOB-MRI may show discrepancies in evaluating AP vascularity in the case of deep, ill-defined, heterogeneous, slightly enhanced lesions, and histologically early HCCs. We recommend adjusting AP with precontrast images in EOB-MRI, and combining both modalities to detect hypervascularity. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 15, 2021 Category: Radiology Source Type: research

Correction to: Wave intensity, an index of ventriculo-arterial interaction, increases in hypertensive subjects but decreases in normotensive subjects during the cold pressor test
In the original publication of the article. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 5, 2021 Category: Radiology Source Type: research

Hypoechoic neoplasm with hyperechoic capsule on transthoracic echocardiography in a case of cardiac hemangioma
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 4, 2021 Category: Radiology Source Type: research

Normal values of combinational elastography in adult liver: the influence of age
AbstractPurposeWe aimed to clarify the normal values obtained by simultaneous use of shear wave imaging and strain imaging (combinational elastography) in liver and reveal how aging influences them.MethodsIn our checkup center, 257 examinees were diagnosed with normal liver based on questionnaires about liver disease and their drinking history, liver function test results, and ultrasound B-mode study findings. We estimated the values of combinational elastography and considered the correlation between the values and age. A multivariate analysis was performed concerning several features and the liver fibrosis (LF) index. We...
Source: Journal of Medical Ultrasonics - March 2, 2021 Category: Radiology Source Type: research

Comparison of lung ultrasonography findings with chest computed tomography results in coronavirus (COVID-19) pneumonia
AbstractPurposeThe purpose of our study was to determine the usability of lung ultrasonography (LUS) in the diagnosis of COVID-19, and to match the morphological features of lesions detected on computed tomography (CT) with the findings observed on LUS.MethodsSixty patients with COVID-19 were included in this prospective study. Patients were examined by radiology and anesthesia clinic specialists for a visual CT score. A LUS 12-zone ultrasonography protocol was applied by the investigator blinded to the CT and PCR test results. The characteristics of abnormal findings and the relationship of lesions to the pleura and the d...
Source: Journal of Medical Ultrasonics - February 26, 2021 Category: Radiology Source Type: research

Relationship between shear elastic modulus and passive force of the human rectus femoris at multiple sites: a Thiel soft-embalmed cadaver study
ConclusionShear wave elastography may be used as an indirect method to measure the changing passive force at any site within human muscles. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 12, 2021 Category: Radiology Source Type: research

Soleal vein dilatation in the early phase of hospitalization is associated with subsequent development of deep vein thrombosis in patients with acute stroke
ConclusionIn our acute stroke patients, SOV dilation, history of stroke, and elevated hematocrit level were found to be associated with risk of developing a new DVT. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 29, 2021 Category: Radiology Source Type: research

Ultrasonography and fine needle aspiration cytology of thyroid Langerhans cell histiocytosis lesions
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 18, 2021 Category: Radiology Source Type: research

Wave intensity, an index of ventriculo-arterial interaction, increases in hypertensive subjects but decreases in normotensive subjects during the cold pressor test
AbstractPurposeCardiovascular reactivity to the cold pressor test (CPT) is considered to be a marker for apparent and potential hypertension. We aimed to elucidate the association between the changes in wave intensity (WI) during CPT and hypertension.MethodsWe recruited 85 volunteers, 33 of whom were hypertensive and 52 normotensive. Using ultrasonic equipment during CPT, we measured carotid arterial WI, which is defined in terms of blood pressure and velocity in the carotid artery.ResultsThe peak WI (W1) increased during CPT in 70.6% of hypertensive individuals, but decreased in 72.6% of normotensive individuals. The chi-...
Source: Journal of Medical Ultrasonics - January 16, 2021 Category: Radiology Source Type: research

Point-of-care lung ultrasound for the assessment of pneumonia: a narrative review in the COVID-19 era
AbstractIn the coronavirus disease-2019 (COVID-19) era, point-of-care lung ultrasound (LUS) has attracted increased attention. Prospective studies on LUS for the assessment of pneumonia in adult patients were extensively carried out for more than 10  years before this era. None of these prospective studies attempted to differentiate bacterial and viral pneumonia in adult patients using LUS. The majority of studies considered the LUS examination to be positive if sonographic consolidations or multiple B-lines were observed. Significant differen ces existed in the accuracy of these studies. Some studies revealed that LU...
Source: Journal of Medical Ultrasonics - January 13, 2021 Category: Radiology Source Type: research

Evaluation method of the degree of red blood cell aggregation considering ultrasonic propagation attenuation by analyzing ultrasonic backscattering properties
ConclusionThese results suggest that the proposed method can provide precise size estimation by considering the propagation attenuation component regardless of differences in blood conditions such as RBC concentration and degree of aggregation. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 12, 2021 Category: Radiology Source Type: research

Measurement of fetal automated fractional shortening using two-dimensional tracking in multiple centers
ConclusionIn this study, we succeeded in defining a reference Auto FS value not only at one institution but also multiple centers. This study suggests that Auto FS can be used clinically and effectively. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 11, 2021 Category: Radiology Source Type: research

Investigation of feasibility of singular value decomposition clutter filter in plane wave imaging with packet transmission sequence
ConclusionAn SVD clutter filter was feasible in plane wave imaging with the packet transmission sequence, and the performance was improved by limiting the number of transmissions per packet to two. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 9, 2021 Category: Radiology Source Type: research

Noninvasive ultrasound technique for assessment of liver fibrosis and cardiac function in Fontan-associated liver disease: diagnosis based on elastography and hepatic vein waveform type
This study aimed to evaluate whether hepatic vein (HV) waveform analysis and elastography could be alternative markers to cardiac index (CI) in patients with FALD and assess factors influencing elastography measurements in FALD cases.MethodsAll patients underwent cardiac catheterization, B-mode ultrasound and ultrasound elastography measurement. Moreover, we measured serum markers related to fibrosis and examined HV blood flow using duplex Doppler ultrasonography.ResultsForty-three patients (median age, 17  years; interquartile range, 12–25 years; 29 men, 6 with liver biopsy) were enrolled. The real-time ti...
Source: Journal of Medical Ultrasonics - January 8, 2021 Category: Radiology Source Type: research

Can measuring perilesional tissue stiffness and stiff rim sign improve the diagnostic performance between benign and malignant breast lesions?
AbstractPurposeTo evaluate tissue stiffness values around breast lesions and stiff rim sign for the differentiation of benign and malignant lesions.MethodsA total of 192 patients (mean age, 44.6  ± 13.6 years) with 199 breast lesions were included in this retrospective study. All lesions were pathologically proven by US-guided core needle biopsy (CNB), Mammotome biopsy, or surgery. We first observed the presence or absence of a stiff rim sign, which was defined as a red or orange halo around the breast lesion. The shell around the breast lesion on SWE was then automatically drawn by machine, with ...
Source: Journal of Medical Ultrasonics - January 4, 2021 Category: Radiology Source Type: research

Reliability of an ultrasonographical scoring system for diagnosis of sinusoidal obstruction syndrome/veno-occlusive disease in patients with hematopoietic stem cell transplantation
ConclusionThe inter- and intra-reliabilities of HokUS-10 were excellent. Thus, US might be a reliable tool for SOS/VOD diagnosis. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 4, 2021 Category: Radiology Source Type: research

Evaluating the usefulness of breast strain elastography for intraductal lesions
In this study, 170 ultrasonographically detected mass lesions in 162 cases (106 malignant lesions and 64 benign lesions) —in which tissue biopsy by core needle biopsy and vacuum-assisted biopsy, or surgically performed histopathological diagnosis, was performed—were selected as subjects from among 1978 consecutive cases (from January 2014 to December 2016) in which strain elastography images were acquired, in addi tion to standard B-mode breast ultrasonography, by measuring the E-index and E-ratio.ResultsThe cut-off values for E-index and E-ratio in the malignant/benign discrimination of breast lesions were det...
Source: Journal of Medical Ultrasonics - January 3, 2021 Category: Radiology Source Type: research

B-mode ultrasound diagnostic flowchart for solid breast masses: JABTS BC-01 study
ConclusionWe developed a simple diagnostic flowchart for breast ultrasound. This flowchart is anticipated to be applicable to educating beginners learning breast ultrasound. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 3, 2021 Category: Radiology Source Type: research

Role of ultrasound in follow-up after choledochal cyst surgery
AbstractCholedochal cyst, which is a congenital dilatation of the bile duct, is a common congenital disease requiring surgical repair. This disease usually occurs in children aged
Source: Journal of Medical Ultrasonics - January 2, 2021 Category: Radiology Source Type: research

Back to basics: what is needed for optimal use of ultrasound in the evaluation of pancreatobiliary diseases?
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 1, 2021 Category: Radiology Source Type: research

Learn as if you were to live forever
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 1, 2021 Category: Radiology Source Type: research

A case of umbilical cord angiomyxoma with massive arteriovenous shunts diagnosed with HDlive Flow
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - November 10, 2020 Category: Radiology Source Type: research

On the occasion of publication of the feature on diagnosis and assessment of nonalcoholic fatty liver disease/nonalcoholic steatohepatitis using ultrasound elastography
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - November 3, 2020 Category: Radiology Source Type: research

Histopathological findings of nonalcoholic fatty liver disease and nonalcoholic steatohepatitis
We describe the main histological features of NAFLD, i.e., steatosis, inflammation, ballooning hepatocytes, Mallory-Denk bodies, and fibrosis, as well as the evolutional process to liver cirrhosis. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - November 2, 2020 Category: Radiology Source Type: research

Magnetic resonance imaging for the assessment of pathological hepatic findings in nonalcoholic fatty liver disease
AbstractThe prevalence of nonalcoholic fatty liver disease (NAFLD) is expected to increase because of the current epidemics of obesity and diabetes, and NAFLD has become a major cause of chronic liver disease worldwide. Liver fibrosis is associated with poor long-term outcomes in patients with NAFLD. Additionally, increased mortality and liver-related complications are primarily seen in patients with nonalcoholic steatohepatitis (NASH); however, nonalcoholic fatty liver (NAFL) is believed to be benign and non-progressive. Therefore, distinguishing between NASH and NAFL is clinically important. Liver biopsy is the gold stan...
Source: Journal of Medical Ultrasonics - October 27, 2020 Category: Radiology Source Type: research

Nonalcoholic fatty liver disease and nonalcoholic steatohepatitis: new trends and role of ultrasonography
In conclusion, NAFLD is at a turning point in terms of its conceptualization, terminology, and diagnostics. It is now time to reconfirm the role of ultrasonography for the assessment of NAFLD. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - October 21, 2020 Category: Radiology Source Type: research

A growing left ventricular aneurysm after myocardial infarction: pathological confirmation of subepicardial aneurysm
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - October 20, 2020 Category: Radiology Source Type: research

Reliability of shoulder muscle stiffness measurement using strain ultrasound elastography and an acoustic coupler
The objective of this study was to evaluate intratester and intertester reliabilities in measuring the stiffness of the shoulder muscles using strain ultrasound elastography (USE) and an acoustic coupler.MethodTissue stiffness was measured in the trapezius muscle and in the supraspinatus muscle of healthy young volunteers.ResultsThe mean strain ratios measured by two experienced shoulder surgeons were significantly higher in the trapezius muscle than in the supraspinatus muscle (P 
Source: Journal of Medical Ultrasonics - October 14, 2020 Category: Radiology Source Type: research

Acknowlegment to reviewers
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - October 1, 2020 Category: Radiology Source Type: research

Feature articles in the Journal of Medical Ultrasonics
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - October 1, 2020 Category: Radiology Source Type: research

How do we keep our passion for research during the COVID-19 pandemic?
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - October 1, 2020 Category: Radiology Source Type: research

A case of rapid progression of a cardiac tumor originating from the coronary sinus observed by transthoracic echocardiography
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - September 28, 2020 Category: Radiology Source Type: research

Evaluation of background parenchymal enhancement in breast contrast-enhanced ultrasound with Sonazoid ®
ConclusionThe degree of BPE on CEUS appeared related to age, menstruating or menopausal, and atrophy of breast tissue. BPE on CEUS was the same between those with a malignant tumor and those with a benign tumor in each menstrual status. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - September 27, 2020 Category: Radiology Source Type: research

Mycotic coronary artery aneurysm causing chest pain detected by transthoracic echocardiography: a potential blind spot of routine screening in parasternal short axis view
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - September 27, 2020 Category: Radiology Source Type: research

Sonographic findings of cervical laceration caused by vaginal delivery in pregnancy after radical trachelectomy
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - September 25, 2020 Category: Radiology Source Type: research