A novel adaptive apodization to improve the resolution of phased subarray imaging in medical ultrasound
ConclusionApplying the proposed ADAP, besides conventional compounding in PSA imaging, leads to improvement of both the resolution and contrast compared to PHA imaging. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - September 20, 2019 Category: Radiology Source Type: research

Role of transabdominal ultrasonography in the diagnosis of pancreatic cystic lesions
We present a review of the possibilities and limits of US in the diagnosis of PCLs, the technical development of US, and the ultrasonographic characteristics of PCLs. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - September 14, 2019 Category: Radiology Source Type: research

Left ventricular global longitudinal strain calculated from manually traced endocardial border lengths utilizing the images for routine ejection fraction measurement by biplane method of disks
AbstractPurposeThe purpose of this study was to test whether the fractional change in the endocardial border length between end-diastole and end-systole as manually traced in left ventricular ejection fraction (LVEF) measurement using the biplane method of disks (MOD) was consistent with the global longitudinal strain derived from speckle-tracking echocardiography.MethodsFor 105 patients who underwent echocardiography, two- and four-chamber images with manually traced endocardial lines for LVEF measurement by MOD were stored. LV endocardial lengths at end-diastole and at end-systole were measured on both images to calculat...
Source: Journal of Medical Ultrasonics - September 13, 2019 Category: Radiology Source Type: research

Frequency dependence of attenuation and backscatter coefficient of ex vivo human lymphedema dermis
ConclusionFrequency independence of AC and BSC in LE ( −) and LE (+) was confirmed. Several 9- to 19-MHz ultrasound beams are sufficient for BSC analysis to discriminate LE (−) and LE (+) in terms of the penetration depth of the ultrasound. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - September 12, 2019 Category: Radiology Source Type: research

Correlation of the type and degree of cystocele with stress urinary incontinence by transperineal ultrasound
AbstractPurposeTo assess the correlation between the type and degree of cystocele and stress urinary incontinence (SUI) by transperineal ultrasound.MethodsA retrospective study evaluated 207 women who were diagnosed with cystocele by transperineal ultrasound. One hundred and six women who were diagnosed with SUI by a full urodynamic study were enrolled in the SUI group, 101 women without SUI were enrolled in the prolapse group, and 100 normal women with neither SUI nor POP were enrolled as the control group. In the transperineal ultrasound study, the bladder neck, the lowest point of the bladder wall, bladder neck funnelin...
Source: Journal of Medical Ultrasonics - September 6, 2019 Category: Radiology Source Type: research

Echocardiographic assessment of mitral regurgitation
AbstractMitral regurgitation (MR) is one of the most frequent indications for valve surgery in developed countries, and echocardiographic assessment is an essential tool to evaluate its etiologies, severity, and therapeutic indications. The mitral valve apparatus is a complex structure composed of several parts: apart from the mitral valve leaflets and annulus, it also includes the chordae tendineae, papillary muscles, and left ventricular (LV) wall. MR can be caused not only by organic changes of the mitral valve leaflets or chordae (primary MR) but also by extreme mitral annular enlargement or mitral leaflet tethering du...
Source: Journal of Medical Ultrasonics - August 24, 2019 Category: Radiology Source Type: research

Discrimination of thoracic spine from muscle based on their difference in ultrasound reflection and scattering characteristics
ConclusionUsing the difference in the characteristics of reflection from bone and scattering from muscle tissue, we could distinguish bone from muscle tissue with the proposed method. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 21, 2019 Category: Radiology Source Type: research

Visualization of intrahepatic portosystemic shunt and intra-abdominal umbilical vein varix using fetal ultrasonography with HDlive flow imaging
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 20, 2019 Category: Radiology Source Type: research

Ultrasound diagnosis of pancreatic solid tumors
ConclusionCEUS is a minimally invasive and useful diagnostic method that can be used to make a simple and quick qualitative diagnosis of pancreatic diseases. CEUS provides a lot of information important for diagnosis, and has led to changes in the conventional diagnostic systems in pancreatic diseases. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 16, 2019 Category: Radiology Source Type: research

Value of ultrasound scoring system for assessing risk of pernicious placenta previa with accreta spectrum disorders and poor pregnancy outcomes
AbstractPurposeTo evaluate a system for assessing the risk of pernicious placenta previa (PPP) with placenta accreta spectrum (PAS) disorders and poor pregnancy outcomes.MethodsThis prospective study focused on PPP women at  ≥ 28 weeks’ pregnancy. Transabdominal or transvaginal ultrasonography was used to assess PAS and poor pregnancy outcomes with a system involving uteroplacental demarcation, number and size of lacunae, bladder line, and placental basal and lacunae flow. Every item was assigned 0–2 points, and the sum yielded the final score. Diagnosis of PAS was based on surgery or path...
Source: Journal of Medical Ultrasonics - August 7, 2019 Category: Radiology Source Type: research

Endoscopic ultrasonography for pancreatic solid lesions
AbstractThe incidence and mortality rates of pancreatic cancer, which has a poor prognosis, are rising rapidly. Endoscopic ultrasonography (EUS) provides superior spatial resolution compared with other imaging modalities such as transabdominal ultrasound, computed tomography (CT), and magnetic resonance imaging (MRI), and it is considered among the most reliable and efficient diagnostic modalities for pancreatic diseases. In this review, we show that EUS is useful for detection of pancreatic solid lesions and staging of pancreatic cancer. EUS also plays an important role in screening patients with high-risk factors for pan...
Source: Journal of Medical Ultrasonics - August 6, 2019 Category: Radiology Source Type: research

Contrast-enhanced harmonic endoscopic ultrasound using time –intensity curve analysis predicts pathological grade of pancreatic neuroendocrine neoplasm
ConclusionCH-EUS and TIC analysis showed high diagnostic accuracy for grade diagnosis of PNEN. Quantitative perfusion analysis is useful to predict PNEN grade diagnosis preoperatively. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 3, 2019 Category: Radiology Source Type: research

Inhibition of myostatin signal pathway may be involved in low-intensity pulsed ultrasound promoting bone healing
ConclusionsThe results indicate that LIPUS may promote bone healing through inhibition of the myostatin signal pathway. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 3, 2019 Category: Radiology Source Type: research

Correction to: Validation trial for efficacy of ultrasonographic measurement method to predict ascitic volume using virtual ultrasonography
In the original publication of the article the formula under the heading “Three-point method” was incorrect, the correct formula is given in this correction. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 1, 2019 Category: Radiology Source Type: research

Clinical application of stress echocardiography for valvular heart disease
This article reviews the clinical application of stress echocardiography, including dobutamine, semisupine bicycle, treadmill, and leg-positive pressure for VHD patient management, and focuses on the current consensus regarding the use of stress echocardiography in VHD. Stress echocardiography is safe and should be encouraged, especially in heart valve clinics, to understand the complex mechanism in asymptomatic patients. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - July 10, 2019 Category: Radiology Source Type: research

Cross-sectional understanding/research across clinical disciplines and integration of basic and clinical research
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - July 1, 2019 Category: Radiology Source Type: research

Expectations for contrast-enhanced ultrasonography
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - July 1, 2019 Category: Radiology Source Type: research

Ultrasound-guided injection and the pie crust technique for the treatment of symptomatic bipartite patella
This study aimed to investigate the results of a new treatment procedure (ultrasound-guided injection and the “pie crust” technique for lengthening of capsular tendon structures) for symptomatic bipartite patella.MethodsWe retrospectively investigated patient outcomes following the treatment of symptomatic type III bipartite patella with our new technique. Fifteen knees in 14 boys (mean age, 13.0  ± 1.7 years) were included. The procedure involved the injection of 1% lidocaine (2 mL) and triamcinolone acetonide (5 mg) between the patella and fragment. We then punctured 10 sit...
Source: Journal of Medical Ultrasonics - July 1, 2019 Category: Radiology Source Type: research

Common pitfalls and mistakes in pediatric ultrasound
AbstractThere are many errors and pitfalls that are commonly encountered during ultrasound examinations. In normal ultrasound, pitfalls may arise from anatomic or physiologic variants of pediatric anatomy, settings, artifacts, patient conditions, operator misunderstanding, or inexperienced performance. In limited field and point-of-care ultrasound, common errors are usually due to limited access, misdiagnosis as a result of wrong timing, unsuitable patient conditions, limited transducer options, satisfaction of search, and unfamiliarity with pediatric sonography. Knowledge of these pitfalls helps improve a physician &rsquo...
Source: Journal of Medical Ultrasonics - June 26, 2019 Category: Radiology Source Type: research

Increased hardness of the underlying pancreas correlates with the presence of intraductal papillary-mucinous neoplasm in a limited number of cases
AbstractPurposePancreatic fibrosis or fibrosing reactions have been reported in intraductal papillary-mucinous neoplasm (IPMN) patients. We assessed whether a higher elastic modulus (EM) measured using shear wave elastography (SW-EG) correlated with the existence of branch-duct (BD) IPMN.MethodsIn total, 183 normal pancreas (NP) and 123 BD-IPMN cases were enrolled. First, we assessed the difference in pancreatic EM (PEM) at different sites (head or tail side of the cyst). Second, a comparison was done between the median PEM of the NP and the BD-IPMN cases. Receiver-operating characteristic analysis was performed to determi...
Source: Journal of Medical Ultrasonics - June 19, 2019 Category: Radiology Source Type: research

Correction to: Feasibility of automated fetal fractional shortening measurement with two-dimensional tracking and construction of a reference range for normal fetuses
In the original publication of the article, the Conflict of interest statement. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 19, 2019 Category: Radiology Source Type: research

Response to the Letter: Shear wave velocity might correlate with portal venous perfusion if correct portal venous perfusion techniques are used
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 17, 2019 Category: Radiology Source Type: research

Ultrasonographic assessment of organs other than the heart in patients with heart failure
AbstractThe number of patients with heart failure has been dramatically increasing in Japan in association with aging of the society. This phenomenon is referred to as a heart failure pandemic. The fundamental origin of heart failure is cardiac dysfunction. Echocardiography is widely used to assess cardiac function, as well as to diagnose heart diseases that cause cardiac dysfunction. However, the severity of heart failure is not necessarily correlated with that of cardiac dysfunction. This is partly explained by the fact that heart failure induces dysfunction of organs other than the heart through hemodynamic deterioratio...
Source: Journal of Medical Ultrasonics - June 11, 2019 Category: Radiology Source Type: research

Shear wave velocity might correlate with portal venous perfusion if correct portal venous perfusion techniques are used
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 4, 2019 Category: Radiology Source Type: research

The use of ultrasonography during minimally invasive Achilles tendon repair to avoid sural nerve injury
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 4, 2019 Category: Radiology Source Type: research

The value of virtual touch tissue imaging quantification in the differential diagnosis between benign and malignant breast lesions
AbstractPurposeTo evaluate the value and diagnostic performance of virtual touch tissue imaging quantification (VTIQ) and to determine the optimum cut-off value for differential diagnosis between benign and malignant breast lesions.MethodsConventional ultrasonography (US) and VTIQ were performed in 454 patients with 466 breast lesions with a Siemens Acuson S3000 ultrasound machine. All lesions were assessed by an ultrasound Breast Imaging Reporting and Data System (BI-RADS) and confirmed by histopathology. The maximum, mean, and minimum shear wave velocity (SWV) values were quantitatively measured in m/s within the regi...
Source: Journal of Medical Ultrasonics - May 17, 2019 Category: Radiology Source Type: research

Role of intra-ventricular vortex in left ventricular ejection elucidated by echo-dynamography
ConclusionEjection of blood from the LV was accomplished by the extruding action of the ventricular wall and the centrifugal force of the accelerated vortex during this period. During ejection, acceralated outflow was considered to create a spiral flow in the aorta with help from the spherical structure of the Valsalva sinus. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - May 10, 2019 Category: Radiology Source Type: research

Association between hyperechogenic pancreas and pancreatic ductal adenocarcinoma concomitant with intraductal papillary mucinous neoplasms
ConclusionOur analysis demonstrated that hyperechogenic pancreas was associated with concomitant PDAC in patients with IPMN. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - May 8, 2019 Category: Radiology Source Type: research

Echocardiography and cancer therapeutics-related cardiac dysfunction
This article reviews the utility of GLS for early detection of cardiotoxicity in patients during and after cancer chemotherapy, and future perspectives for the management of such patients. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 27, 2019 Category: Radiology Source Type: research

Decline of popliteal artery flow-mediated dilation with aging and possible involvement of asymmetric dimethylarginine in healthy men
We examined the influences of age and gender on flow-mediated endothelial function and the involvement of the competitive inhibition ofl-arginine in endothelial function.MethodsWe measured brachial and popliteal flow-mediated vasodilation (FMD) responses, nitrate/nitrite (NOx) concentrations, and plasma levels of asymmetric dimethylarginine (ADMA) in four healthy, nonsmoking groups: young men (mean 26  ± 2 years,n = 17), middle-aged men (mean 50 ± 3 years,n = 19), young women (mean 27 ± 2 years,n = 16), a...
Source: Journal of Medical Ultrasonics - April 23, 2019 Category: Radiology Source Type: research

Feasibility and usefulness of endoscopic ultrasonography-guided shear-wave measurement for assessment of autoimmune pancreatitis activity: a prospective exploratory study
ConclusionEUS-SWM is feasible and generates credible results. EUS-SWM was a useful method for assessment of the effect of steroid therapy in AIP patients. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 16, 2019 Category: Radiology Source Type: research

Sonographic morphometry of abductor pollicis brevis: can direct contact yield images comparable with those obtained by the water bath technique?
ConclusionSimilar to the WBT, the DM provides measurements of the APB thickness and CSA without causing morphometric changes. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 15, 2019 Category: Radiology Source Type: research

Spectral analysis framework for compressed sensing ultrasound signals
ConclusionThe proposed method provides accurate spectral analysis without full reconstruction. Since it effectively utilizes the data storage and reduces the processing time, it could be applied to small and portable ultrasound systems using the CS technique. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 6, 2019 Category: Radiology Source Type: research

Feasibility of automated fetal fractional shortening measurement with two-dimensional tracking and construction of a reference range for normal fetuses
ConclusionWe succeeded in defining a reference Auto FS value for normal singleton pregnancies. Auto FS was negatively correlated with gestational age. This novel technique can assess fetal heart contractility. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 5, 2019 Category: Radiology Source Type: research

Incidence of residual bacterial contamination of transvaginal ultrasound probes
ConclusionThese findings suggest that there is a high rate of ultrasound probe residual bacterial contamination in Japan. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 2, 2019 Category: Radiology Source Type: research

Standardization of diagnostic and therapeutic ultrasound and the pitfalls of standardization
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 28, 2019 Category: Radiology Source Type: research

State of the “Fine” art in the age of artificial intelligence
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 28, 2019 Category: Radiology Source Type: research

Range-ambiguity artifact in abdominal ultrasound
AbstractRange-ambiguity artifacts (RAAs) are an erroneous mapping of returning echoes into a composite picture. The purpose of this review was to illustrate the mechanism of RAAs and to present the diagnostic problems caused by RAAs. RAA features differ slightly from organ to organ. At the level of the urinary bladder, RAAs take the form of a cloud-like, ill-demarcated, immobile, echogenic area, and the depth of the echogenic area differs depending on the pulse repetition frequency (PRF). This form is referred to as “static RAA” in this review. There are two key ultrasound characteristics of RAAs at the level o...
Source: Journal of Medical Ultrasonics - March 19, 2019 Category: Radiology Source Type: research

Initial phantom study on estimation of speed of sound in medium using coherence among received echo signals
ConclusionThe speed of sound of a homogeneous medium could be determined by the proposed method with errors of less than 1% using CFs obtained from ultrasonic echo signals selected based on the CF-weighted echo amplitudes, i.e., when echo signals with better signal-to-noise ratios (SNRs) were used. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 8, 2019 Category: Radiology Source Type: research

The role of ultrasound imaging in adult patients with testicular torsion: a systematic review and meta-analysis
ConclusionsThis meta-analysis demonstrated that ultrasound represents an effective imaging modality for diagnosing testicular torsion in adult patients with acute scrotal pain. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 7, 2019 Category: Radiology Source Type: research

Investigating the minimum distance between the finger flexor tendons and distal radius during wrist and finger positions in healthy people
ConclusionsIt is necessary to measure the distance between the FPL and distal radius in maximal wrist dorsiflexion with full flexion of the isolated thumb, as the shortest distance was observed with flexion of the isolated thumb. On the contrary, we recommend measuring the distance between the FDP2 and distal radius in 30 ° wrist dorsiflexion with flexion of all fingers. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 6, 2019 Category: Radiology Source Type: research

Fast adaptive beamforming through a cascade structure for ultrasound imaging
ConclusionThe new fast and superfast MV methods are capable of obtaining the same results as the MV and BS-MV, at a significantly lower computational cost. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 22, 2019 Category: Radiology Source Type: research

Diagnosis of anomalous origin of the right coronary artery from the pulmonary artery by echocardiography
ConclusionARCAPA can be diagnosed by echocardiography but is prone to misdiagnosis. This malformation should be distinguished from coronary artery fistula. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 21, 2019 Category: Radiology Source Type: research

Usability of Achilles tendon strain elastography for the diagnosis of coronary artery disease
AbstractPurposeThere are close relationships between major coronary artery disease (CAD) risk factors and Achilles tendon thickness (AT-T) and AT strain ratio (AT-SR). Our aim was to evaluate the diagnostic importance of AT-T and AT-SR as obtained by ultrasonography (USG) and strain elastography (SE) for predicting CAD.Materials and methodsOne hundred and eighty-four patients scheduled to undergo coronary angiography were included in the study. Achilles tendon USG (B-mode and SE) and laboratory tests were performed on all patients. The patients were divided into two groups, i.e., patients with and without CAD.ResultsThe pa...
Source: Journal of Medical Ultrasonics - February 19, 2019 Category: Radiology Source Type: research

Echogenic lymph nodes in the differential diagnosis of pediatric sarcoidosis
We present a delayed diagnosis of sarcoidosis in an 11-year-old girl by demonstrating ultrasonographic imaging findings of granulomatous cervical and abdominal lymph node involvement. Pulmonary interstitial fibrosis in addition to multi-compartmental enlarged echogenic lymph nodes could be considered sarcoidosis. Punctate echogenic foci in the cervical lymph nodes should be considered in the differential diagnosis of sarcoidosis. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 8, 2019 Category: Radiology Source Type: research

Relationship of blood flow in the common iliac vein to lower urinary tract disease
ConclusionsMen with chronic prostatitis and women with overactive bladder have low blood flow in the common iliac vein, suggesting that pelvic congestion may be related to these two conditions. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 8, 2019 Category: Radiology Source Type: research

The relationship of spleen stiffness value measured by shear wave elastography with age, gender, and spleen size in healthy volunteers
ConclusionSpleen stiffness can be quantitatively measured by 2-D SWE, and the spleen stiffness is not affected by age, gender, and spleen size. The values obtained in this study can be used as normal base values in examination of different spleen pathologies. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 28, 2019 Category: Radiology Source Type: research

Identification of vascular lumen by singular value decomposition filtering on blood flow velocity distribution
ConclusionWe proposed a novel method for identification of the vascular lumen. The proposed method could suppress the effects of wall motion, which was present in the conventional power Doppler image. The lumen region identified by the proposed method well conformed with the anatomical information in the B-mode image of the corresponding section. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 24, 2019 Category: Radiology Source Type: research

Effects of Clematis chinensis Osbeck mediated by low-intensity pulsed ultrasound on transforming growth factor- β/Smad signaling in rabbit articular chondrocytes
In this study, we aimed to explore whether and how low-intensity pulsed ultrasound (LIPUS) enhanced CCO delivery into chondrocytes and stimulated biological activity in vitro.MethodsChondrocytes were isolated from knee articular cartilage of 2-week-old rabbits and treated with LIPUS plus CCO or recombinant transforming growth factor beta 1 (TGF- β1; 0.5 ng/mL), with or without anti-TGF-β1 antibodies (10 μg/mL), for 3 days. Cell proliferation was assessed by Cell-Counting Kit-8 assays. Immunocytochemistry, western blotting, and quantitative polymerase chain reaction were applied to detect the exp...
Source: Journal of Medical Ultrasonics - January 18, 2019 Category: Radiology Source Type: research

Persistent truncus arteriosus with absent semilunar valve in first trimester
AbstractPersistent truncus arteriosus (PTA) is a relatively uncommon congenital heart disease, accounting for approximately 0.7 –1.4% of all congenital cardiac abnormalities worldwide. PTA is usually accompanied by a single semilunar valve, with leaflets ranging from one to six in number. However, absent semilunar valve (ASV) is rarely seen in PTA. Here, we report a case of prenatally diagnosed PTA accompanied by ASV (PTA- ASV) confirmed by postmortem autopsy. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 14, 2019 Category: Radiology Source Type: research