Segmentation of breast ultrasound images based on active contours using neutrosophic theory
ConclusionThe purposed method indicates clear advantages over other conventional methods of active contour segmentation, i.e., region-scalable fitting energy and weighted region-scalable fitting energy. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 18, 2017 Category: Radiology Source Type: research

Significance of intravascular ultrasound and exercise stress echocardiography in diagnosis of exercise-induced vasospastic angina at the site of moderate stenosis
We report a case of exercise-induced vasospastic angina at the site of moderate stenosis, where multi-modality imaging, including exercise stress echocardiography and intravascular ultrasound, was utilized to make a definitive diagnosis and investigate underlying causes. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 17, 2017 Category: Radiology Source Type: research

Two patterns of contrast-enhanced ultrasonography with Sonazoid ® in spontaneous rupture of hepatocellular carcinoma: a report of four cases
This report describes two distinctive patterns of bleeding from ruptured HCC observed in CEUS with Sonazoid®. Four patients with suspected HCC rupture were examined by gray-scale ultrasonography (US) and then CEUS with Sonazoid®. Two patterns of bleeding were observed with CEUS: jet-like extravasation (n = 2) and bubble leakage (n = 2). While contrast-enhanced computed tomography and angiography revealed active bleeding in only one patient, CEUS detected active bleeding and enabled the bleeding site to be estimated in all patients. Transcatheter arterial embolization was performed based on the f...
Source: Journal of Medical Ultrasonics - August 16, 2017 Category: Radiology Source Type: research

Three-dimensional HDlive imaging of an umbilical cord cyst
In this report, we demonstrate the novel visual depiction of UCC in utero with three-dimensional HDlive imaging, which helps substantially with prenatal diagnosis. A case with an abnormal placental mass at 16  weeks and 5 days of gestation was observed in detail using HDlive. HDlive revealed very realistic images of the intrauterine abnormality: the oval lesion was smooth with regular contours and a homogenous wall at the site of cord insertion on the placenta. In addition, we confirmed the absent of u mbilical cord, placental, and fetal structural anomalies. Here, we report a case wherein HDlive may have provide...
Source: Journal of Medical Ultrasonics - August 10, 2017 Category: Radiology Source Type: research

Erratum to: Vertebral abnormality without spine-curvature deformity on prenatal ultrasonography: sonographic findings and postnatal radiographic correlations
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - August 7, 2017 Category: Radiology Source Type: research

A case of Kawasaki disease presenting as sigmoid colitis
AbstractInitial gastrointestinal symptoms might confuse the clinical pictures of some patients with Kawasaki disease (KD) and delay diagnosis and treatment, especially when the patient does not fulfill sufficient diagnostic criteria for KD. Here, we present the case of a 4-year-old boy with KD who complained of severe left abdominal pain and fever alone for the first 6  days. Abdominal ultrasonography showed severe wall thickening localized to the sigmoid colon, and these findings were confirmed by computed tomography and colonoscopy. Microscopic examination of a biopsy specimen revealed non-specific colitis with infl...
Source: Journal of Medical Ultrasonics - July 27, 2017 Category: Radiology Source Type: research

Prenatal diagnosis of pulmonary atresia with ventricular septal defect
AbstractPulmonary atresia with ventricular septal defect (PA-VSD) is a rare complex congenital heart defect. Major artery-pulmonary collateral arteries (MAPCAs) are characteristic of PA-VSD. Prenatal diagnosis can be achieved in most cases of PA-VSD with recent advances in echocardiography. However, it is extremely rare that all MAPCAs can be observed on the echocardiograph. Here, we report a case of prenatally diagnosed type C PA-VSD in which all the MAPCAs could be seen on the echocardiograph, with the diagnosis supported by autopsy evidence. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - July 27, 2017 Category: Radiology Source Type: research

Prenatal diagnosis of premature constriction of the ductus arteriosus with tricuspid papillary muscle rupture: a case report
We describe the case of a neonate who was prenatally diagnosed at a gestational age of 36  weeks with premature constriction of the ductus arteriosus. Blood from the thin ductus arteriosus flowed toward the pulmonary artery. Severe tricuspid regurgitation was also observed. We subsequently confirmed rupture of the tricuspid papillary muscle after birth. Cardiotonic drugs and nitric oxid e were administered immediately at birth for pulmonary hypertension, and this therapy was continued until the seventh postnatal day. Emergency tricuspid valve repair was unnecessary, because there were no signs of severe circulatory in...
Source: Journal of Medical Ultrasonics - July 19, 2017 Category: Radiology Source Type: research

Certolizumab pegol was effective for treating residual synovitis after total knee arthroplasty in a patient with rheumatoid arthritis: therapeutic monitoring by ultrasound
We present the case of a 59-year-old female who developed rheumatoid arthritis in 2007. Right total knee arthroplasty (TKA) was performed in 2008. Although she was treated with methotrexate (MTX) after the operation, this treatment was insufficient. Infliximab (IFX) was introduced in 2001, and she achieved clinical remission. Left TKA was performed in October 2014. Because active synovitis was not detected by ultrasound after the operation, IFX was discontinued. She had been treated with MTX 8  mg weekly. However, arthralgia of the bilateral knees developed in March 2015. Ultrasound showed synovial hypertrophy with va...
Source: Journal of Medical Ultrasonics - July 19, 2017 Category: Radiology Source Type: research

Apoptotic and genotoxic effects of low-intensity ultrasound on healthy and leukemic human peripheral mononuclear blood cells
ConclusionsThe study demonstrated that low-intensity ultrasound selectively induced apoptosis in cancer PMBCs. Ultrasound-induced DNA damage was observed primarily in leukemic PMBCs. Nevertheless, both cell lines were able to repair ultrasound-mediated DNA strand breaks. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - July 8, 2017 Category: Radiology Source Type: research

Shear wave velocity measurement of upper trapezius muscle by color Doppler shear wave imaging
ConclusionsThis result suggests that our technique is satisfactorily reliable and has potential for future application in various fields, such as evaluation of muscle condition or the effects of rehabilitation. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 28, 2017 Category: Radiology Source Type: research

The latest technology of musculoskeletal ultrasonography: iterative revolution
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 27, 2017 Category: Radiology Source Type: research

Real-time ultrasound elastography of the Achilles tendon in patients with cerebral palsy: is there a correlation between strain ratio and biomechanical indicators?
AbstractPurposeOur aim was to comparatively investigate the strain ratio and thickness of the Achilles tendon in children with cerebral palsy (CP), and to elucidate whether there is a correlation between biomechanical features of the Achilles tendon and strain ratio.MethodsA total of 155 participants (72 CP patients and 83 healthy controls) who underwent real-time elastography of both Achilles tendons were studied. A linear transducer (4.8 –11.0 MHz) was used to obtain the images. Correlation analysis between age, length, and thickness of the Achilles tendon, and strain ratio (SR) was performed by means of Pears...
Source: Journal of Medical Ultrasonics - June 27, 2017 Category: Radiology Source Type: research

Significance of perithyroidal lymph nodes in benign thyroid diseases
AbstractPurposeThe incidences of perithyroidal lymph nodes (PTLNs) in benign thyroid diseases were investigated.MethodsA total of 108 patients were divided into 36 with benign thyroid nodules, 33 with Hashimoto ’s thyroiditis, 14 with Graves’ disease, 10 with hypothyroidism of undetermined etiology, nine with silent thyroiditis, and six with subacute thyroiditis. We assessed the relationships among PTLNs and these groups, thyroid volume, thyroid parenchyma echogenicity, and anti-thyroid-stimulating hor mone receptor, anti-thyroglobulin, and anti-thyroid peroxidase antibodies (TRAb, TgAb, and TPOAb).ResultsThe P...
Source: Journal of Medical Ultrasonics - June 27, 2017 Category: Radiology Source Type: research

Presence of enthesopathy in patients with primary Sjogren ’s syndrome: ultrasonographic study of a local cohort
ConclusionIn this study, it was shown that the MASEI scores assessed by US were significantly higher in patients with PSS than in healthy controls. Plantar fascia, Achilles tendon, and distal patellar tendon were significantly thicker in the PSS group than in the healthy controls. This result suggests that PSS may be one of the causes of musculoskeletal pain that can be seen in patients with PSS. Our study was the first study to use an enthesis index ultrasonographically in patients with PSS. In addition, it is the first study to investigate the relationship between the presence of enthesopathy and disease activity by mean...
Source: Journal of Medical Ultrasonics - June 23, 2017 Category: Radiology Source Type: research

Inflammatory myofibroblastic tumor of the gallbladder: a case report and literature review
AbstractA 50-year-old man had undergone chemotherapy and radiotherapy for malignant lymphoma 1  year earlier. Follow-up computed tomography revealed a gallbladder polyp. Transabdominal ultrasound demonstrated a 20-mm hypoechoic sessile polyp with basal waist in the gallbladder fundus; the surface was covered with a hyperechoic layer of non-uniform thickness. On contrast-enhanced computed tom ography, the polyp showed an early uniform and sustained staining pattern. Magnetic resonance imaging revealed that the polyp had low and slightly high signal intensities on T1- and T2-weighted imaging, respectively. Gallbladder b...
Source: Journal of Medical Ultrasonics - June 21, 2017 Category: Radiology Source Type: research

Differential diagnosis between benign and malignant soft tissue tumors utilizing ultrasound parameters
ConclusionUltrasound is a useful modality for establishing the differential diagnosis between benign and malignant soft tissue tumors. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - June 20, 2017 Category: Radiology Source Type: research

Plicae palmatae in neonates: tumor mimic on sonography
AbstractPlicae palmatae are uterine cervical folds that can be misdiagnosed as a uterine septum on magnetic resonance imaging (MRI). Previous studies in the literature generally tend to include only adults and are limited to MRI findings. Here, we present the case of a 6-day-old girl with a tumorous lesion in her uterine isthmus on sonography. Although we considered uterine tumor as a differential diagnosis, the smooth surface and continuity with a cervical fold on the caudal side suggested that the lesion was, in fact, the tip of plicae palmatae. MRI was subsequently performed, and no restricted diffusion was found, which...
Source: Journal of Medical Ultrasonics - June 10, 2017 Category: Radiology Source Type: research

The utility of superb microvascular imaging for monitoring low-velocity venous flow following pancreas transplantation: report of a case
AbstractVascular thrombosis is a major complication after pancreas transplantation. Because delays in detecting thrombosis often result in graft failure, monitoring blood flow is crucial. Periodic evaluation using color Doppler ultrasonography is mostly performed for monitoring blood flow in the grafted pancreas. However, conventional color Doppler imaging has limited capability to visualize low-velocity blood flow. Superb microvascular imaging (SMI) is a novel ultrasound Doppler technique that is especially sensitive in detecting low-velocity flow. Herein, the authors describe the utility of SMI for monitoring splenic ven...
Source: Journal of Medical Ultrasonics - June 8, 2017 Category: Radiology Source Type: research

Is color Doppler a reliable method for the diagnosis of malrotation?
ConclusionCurrent data in the literature and our results underline that UGCS may yield false-positive and false-negative results. Although CDUS was found to be a reliable method for the diagnosis of malrotation in our study, the limitations of UGCS are also recognized for CDUS. Prospective studies are needed to determine the more valuable method. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - May 25, 2017 Category: Radiology Source Type: research

Ultrasonic identification of pump twin by dual-gate Doppler in a monochorionic-triamniotic triplet twin reversed arterial perfusion sequence before preventative radiofrequency ablation: a case report
AbstractWe performed a dual-gate Doppler examination for a twin reversed arterial perfusion (TRAP) sequence in a monochorionic-triamniotic triplet pregnancy at 16  weeks of gestation and were able to identify the pump twin by arterial pulse rate synchronicity. We performed radiofrequency ablation to coagulate blood flow in the acardius at 16 weeks of gestation without any postoperative complication. At 29 weeks of gestation, we performed a cesarean section due to preterm rupture of the membranes and the patient delivered 1167/1237-g female neonates and a macerated acardius. Examination of the placenta reveal...
Source: Journal of Medical Ultrasonics - May 9, 2017 Category: Radiology Source Type: research

Diagnosis of umbilical cord entanglement in a monochorionic diamniotic twin pregnancy with spontaneous septostomy of the dividing membranes using dual-gate Doppler imaging
AbstractUmbilical cord entanglement is the leading cause of fetal mortality in monoamniotic twin pregnancies and a pseudo monoamniotic environment. Published methods for detecting this complication include color Doppler and pulsed Doppler sonography; however, no method provides an absolute diagnosis. In this case, we report the diagnosis of umbilical cord entanglement using dual-gate Doppler imaging. A 35-year-old woman was referred to our hospital at 28  weeks of gestation for prenatal management because of diagnosis of a monochorionic diamniotic twin pregnancy with spontaneous septostomy of the dividing membranes. E...
Source: Journal of Medical Ultrasonics - May 8, 2017 Category: Radiology Source Type: research

Variations of placental migration in patients with early third trimester malposition
ConclusionsRepeated evaluations of placental position by ultrasonography after late preterm could be of significant value in selecting the most appropriate mode of delivery. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 27, 2017 Category: Radiology Source Type: research

Vertebral abnormality without spine-curvature deformity on prenatal ultrasonography: sonographic findings and postnatal radiographic correlations
ConclusionsMost fetuses with prenatally detected VA without SCD had hypoplastic vertebrae on postnatal radiographs. Prenatal recognition of VA without SCD can lead to an early postnatal diagnosis of a vertebral abnormality and guidance for follow-up. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 25, 2017 Category: Radiology Source Type: research

Duodenal adenocarcinoma successfully diagnosed with transabdominal ultrasonography
AbstractAdenocarcinoma arising from the duodenum is relatively rare. Diagnosis of this disease at an early stage is difficult because its symptoms are usually nonspecific. We herein present a case in which duodenal adenocarcinoma was successfully found by transabdominal ultrasonography. Under ultrasonography, the tumor was located in the proximal duodenum apart from the papilla of Vater, and the serosa was intact. Other diagnostic modalities showed no evidence of adjacent organ invasion or distant metastasis. Therefore, pancreatoduodenectomy was performed and the postoperative course was uneventful. The ultrasonographic fi...
Source: Journal of Medical Ultrasonics - April 24, 2017 Category: Radiology Source Type: research

Twofold minimum variance beamforming for enhanced ultrasound imaging
ConclusionThe method yields significant improvement in the resolving capability and the contrast compared with the conventional MV. At the presence of the steering vector errors, these superiorities were achieved at a cost of slightly more errors in estimating the reflectivity coefficients. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 21, 2017 Category: Radiology Source Type: research

Assistive technology for ultrasound-guided central venous catheter placement
This study evaluated the existing technology used to improve the safety and ease of ultrasound-guided central venous catheterization. Electronic database searches were conducted in Scopus, IEEE, Google Patents, and relevant conference databases (SPIE, MICCAI, and IEEE conferences) for related articles on assistive technology for ultrasound-guided central venous catheterization. A total of 89 articles were examined and pointed to several fields that are currently the focus of improvements to ultrasound-guided procedures. These include improving needle visualization, needle guides and localization technology, image processin...
Source: Journal of Medical Ultrasonics - April 19, 2017 Category: Radiology Source Type: research

Shear wave velocity of the healthy thyroid gland in children with acoustic radiation force impulse elastography
AbstractPurposeAcoustic radiation force impulse imaging is a kind of shear wave elastography that can be used in children for differentiating thyroid pathologies. Possible changes in the healthy thyroid gland in children may create difficulties in the use of shear wave velocities (SWV) in thyroid pathologies. The aim of this study was to define the normal values of SWV for the healthy thyroid gland in children, elucidate the correlation of the SWV values with potential influencing factors, and evaluate intra-operator reproducibility of the SWV.MethodsBetween January 2015 and December 2015, a total of 145 healthy children (...
Source: Journal of Medical Ultrasonics - April 19, 2017 Category: Radiology Source Type: research

Breast adenoid cystic carcinoma: report of a case with emphasis on routine sonographic findings and shear wave elastography
AbstractAdenoid cystic carcinoma (ACC) of the breast is a rare malignant tumor. Its sonographic characteristics have been described in some reports, but there are few such reports available that describe the sonoelastographic findings of this tumor and provide additional information about the nature of the lesion. In this case report, we describe the routine sonographic findings and shear wave elastography findings of a breast adenoid cystic carcinoma in a 53-year-old woman. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - April 5, 2017 Category: Radiology Source Type: research

A new world for locomotor organs brought about by portable echography
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 28, 2017 Category: Radiology Source Type: research

A case of successful transluminal drainage of walled-off necrosis under contrast-enhanced harmonic endoscopic ultrasonography guidance
We report a case of successful transluminal drainage of walled-off necrosis (WON) under contrast-enhanced harmonic endoscopic ultrasonography (CH-EUS) guidance. Recently, EUS-guided transluminal drainage (EUS-TD) of WON has been increasingly used as a minimally invasive treatment option with reportedly high technical and clinical success rates; however, B-mode EUS occasionally fails to depict the target lesion and its margins, particularly in cases where the target shows a heterogeneous echogenicity. In our case, EUS-TD was attempted for infected WON, but visualization using B-mode EUS imaging was poor. Thus, CH-EUS was pe...
Source: Journal of Medical Ultrasonics - March 28, 2017 Category: Radiology Source Type: research

Sonographic classification of testicular tumors by tissue harmonic imaging: experience of 58 cases
ConclusionWe established a sonographic classification of testicular tumors with various histological types. This sonographic classification is potentially useful for estimating the histological type of testicular tumors. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 19, 2017 Category: Radiology Source Type: research

Report of The 89th Annual Scientific Meeting of the Japan Society of Ultrasonics in Medicine, The 12th Congress of the Asian Federation of Societies for Ultrasound in Medicine and Biology, and The 8th Asian Conference on Ultrasound Contrast Imaging (Ultrasonic Week 2016)
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 16, 2017 Category: Radiology Source Type: research

Comparison of carotid artery ultrasonography findings between acute coronary syndrome and atherothrombotic cerebral infarction
AbstractBackground and purposeAlthough risk factors for acute coronary syndrome (ACS) and atherothrombotic cerebral infarction (ACI) are common, it is unknown if the risk factors for these two conditions are similar. The purpose of our study was to elucidate differences in carotid artery atherosclerotic features between ACS and ACI.MethodsWe measured carotid artery ultrasound-based atherosclerotic parameters in 61 ACS and 33 ACI patients. In the ACS patients, 31 had single-vessel coronary artery disease (SVD) and 30 had multivessel coronary artery disease (MVD).ResultsThe maximum intima –media thickness (IMT) of the ...
Source: Journal of Medical Ultrasonics - March 14, 2017 Category: Radiology Source Type: research

Usefulness of end-diastolic ratio in carotid ultrasonography for the screening of dural arteriovenous fistula: a case series
In conclusion, high ED ratio of the CCA and low RI of the ECA might be a useful indicator for both screening and follow-up of dAVF. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - March 13, 2017 Category: Radiology Source Type: research

Quantitative assessment of muscle stiffness with acoustic radiation force impulse elastography after botulinum toxin A injection in children with cerebral palsy
AbstractPurposeOur objective in this study was to assess the changes in medial gastrocnemius muscle (GCM) stiffness after botulinum toxin A (BTA) injection in children with cerebral palsy (CP) by using acoustic radiation force impulse (ARFI) elastography and to research the usability of this technique in clinical practice.Materials and methodsTwenty-four spastic lower extremities of 12 children with CP were assessed. BTA injection treatment was applied to the medial GCM. Muscle stiffness was measured with the ARFI technique before the procedure and a month after the procedure. The patients were assessed with the modified A...
Source: Journal of Medical Ultrasonics - March 6, 2017 Category: Radiology Source Type: research

Verification of recall criteria for masses detected on ultrasound breast cancer screening
ConclusionAlthough some parts of the criteria should be considered further for verification and revision, the current recall criteria are mostly valid. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 24, 2017 Category: Radiology Source Type: research

Visualization of draining vein in focal nodular hyperplasia by superb microvascular imaging: report of two cases
In conclusion, we have reported two cases of hepatic FNH in which SMI revealed clearly not only its feeding vessels and intratumoral vasculature but also its draining vessels communicating with the hepatic vein. SMI is consi dered to increase our diagnostic confidence by revealing fine vessels within and around the FNH lesion. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 20, 2017 Category: Radiology Source Type: research

High-frequency color Doppler ultrasound as the first diagnostic and monitoring choice for early superficial high-flow vascular malformations
We examined 21 early high-flow vascular malformations in this study and deemed that high-frequency color Doppler ultrasound could be regarded as the first diagnostic and monitoring choice for early high-flow vascular malformations at present. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 20, 2017 Category: Radiology Source Type: research

Localization of the fetal conus medullaris by oblique view extended imaging
ConclusionsOVEI can display the 12th rib, T12, and conus medullaris simultaneously. OVEI is applicable to precisely locate the position of the conus medullaris and useful for prenatal evaluation of spinal bifida. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 20, 2017 Category: Radiology Source Type: research

Increased maximum common carotid intima-media thickness is associated with smoking and hypertension in Tochigi Prefecture residents
AbstractObjectiveWe investigated maximum intima-media thickness of the common carotid artery (IMT-Cmax) in residents of Tochigi Prefecture, who have been reported to have high stroke mortality.MethodOur study included 840 individuals. All participants underwent carotid ultrasonography and answered a questionnaire during participation in a health festival in Tochigi Prefecture. The questionnaire was designed to collect information on age, gender, and risk factors for stroke. IMT-Cmax was measured. Statistical analyses were performed to identify factors contributing to IMT-Cmax values ≥1.1 mm.ResultsIn total, 117 sub...
Source: Journal of Medical Ultrasonics - February 14, 2017 Category: Radiology Source Type: research

Efficiency of quantitative echogenicity for investigating supraspinatus tendinopathy by the gray-level histogram of two ultrasound devices
AbstractPurposeThe gray-level histogram of ultrasound is a promising tool for scanning the hypoechogenic appearance of supraspinatus tendinopathy, and the aim of this study was to test the hypothesis that the gray-level value of the supraspinatus tendon in the painful shoulder has a lower value on B-mode images even though in different ultrasound devices.MethodsSixty-seven patients who had unilateral shoulder pain with rotator cuff tendinopathy underwent bilateral shoulder ultrasonography, and we compared the mean gray-level values of painful shoulders and contralateral shoulders without any pain in each patient using two ...
Source: Journal of Medical Ultrasonics - February 13, 2017 Category: Radiology Source Type: research

Can strain elastography combined with ultrasound breast imaging reporting and data system be a more effective method in the differentiation of benign and malignant breast lesions?
ConclusionsThe combination of strain elastography and BI-RADS was found to have better diagnostic performances to diagnose breast lesions than BI-RADS alone. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - February 1, 2017 Category: Radiology Source Type: research

Altered oscillation of Doppler-derived renal and renal interlobar venous flow velocities in hypertensive and diabetic patients
ConclusionThe renal interlobar venous FVOR is strongly influenced by the arterial RI in HT patients, and is reduced in DM patients without an obvious relationship with diabetic nephropathy. These findings should be noted for the clinical application of renal interlobar venous flow analysis. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 31, 2017 Category: Radiology Source Type: research

A case of a quadricuspid aortic valve identified preoperatively using transthoracic echocardiography
AbstractQuadricuspid 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 ...
Source: Journal of Medical Ultrasonics - January 17, 2017 Category: Radiology Source Type: research

Apodized adaptive beamformer
ConclusionApodization was shown to be effective in adaptive beamforming, and an image obtained by the adaptive beamformer with lateral modulation seemed to have potential for improvement of the accuracy in measurement of tissue lateral motion. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - January 12, 2017 Category: Radiology Source Type: research

Changes in the roles of transrectal ultrasonography for the diagnosis of prostate cancer
(Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - December 31, 2016 Category: Radiology Source Type: research

Maternal liver elasticity determined by acoustic radiation force impulse elastosonography in intrahepatic cholestasis of pregnancy
ConclusionThe current study found that maternal liver stiffness measured by ARFI elastosonography was increased in pregnancies complicated with ICP. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - December 29, 2016 Category: Radiology Source Type: research

Ultrasound speckle reduction based on fractional order differentiation
ConclusionsUltrasound phantom testing and in vivo imaging show that the proposed method can improve the quality of an ultrasound image in terms of tissue SNR, CNR, and FOM values. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - December 22, 2016 Category: Radiology Source Type: research

Is the unaffected eye really unaffected? Color Doppler ultrasound findings in unilaterally active central serous chorioretinopathy
ConclusionsHemodynamic changes in OA reflect choroidal hyperperfusion. Hemodynamic and OCT changes in the unaffected eyes of the patient group suggest CSC as a bilateral disorder and the systemic nature of the disease. Further investigations may aid in the evaluation of treatment response and the follow-up of disease, providing a new insight into management strategies. (Source: Journal of Medical Ultrasonics)
Source: Journal of Medical Ultrasonics - December 17, 2016 Category: Radiology Source Type: research