Quantitative evaluation of passive muscle stiffness by shear wave elastography in healthy individuals of different ages.

Objectives: To investigate age-related changes on passive muscle stiffness in healthy individuals and measure the shear modulus in different age groups.

Methods: Shear wave elastography (SWE) movies of gastrocnemius medialis (GM) were collected during passive stretching induced by ankle rotation from plantarflexion (PF) to dorsiflexion (DF). A series of SWE images at ankle angles of PF 40°, PF 30°, PF 20°, PF 10°, 0°, DF 10°, DF 20°, and DF 30° were collected and shear moduli measured accordingly for analyses.

Corrigendum: Atropine Premedication Facilitates Ultrasound-Guided Reduction by Saline Enema in Children With Intussusception.

[This corrects the article DOI: 10.3389/fphar.2019.

Atropine Premedication Facilitates Ultrasound-Guided Reduction by Saline Enema in Children With Intussusception.

Intussusception is the most frequent pediatric abdominal emergency. Intestinal spasm, ischemia, necrosis and even death may occur without prompt diagnosis and treatment. The ultrasound-guided reduction by saline enema is a preferred non-surgical procedure for intussusception.

Risk factors analysis of mirror aneurysms: A multi-center retrospective study based on clinical and demographic profile of patients.

As a special subgroup of multiple intracranial aneurysms, mirror aneurysms are located bilaterally on the corresponding intracranial arteries. The current study sought to compare the clinical and demographic features of patients harboring mirror aneurysm, and to elucidate the corresponding risk factors. We performed a retrospective cohort study of 2641 intracranial aneurysms patients, who were admitted to our hospitals between January 2005 and June 2014.

[Imaging Analysis in Cases with Clonorchiasis-Associated Cholangiocarcinoma].

Objective: To investigate the magnetic resonance imaging （MRI） and computed tomography (CT) features of clonorchiasis-associated cholangiocarcinoma, and provide reference for its clinical diagnosis.

Methods: The CT and MRI （including magnetic resonance cholangiopancreatography, MRCP） data of 60 patients diagnosed to have cholangiocarcinoma（26 cases with clonorchiasis-associated cholangiocarcinoma, group A; 34 cases with simple cholangiocarcinomas, group B） by surgery or biopsy in two hospitals in Guangdong Province during July 2005 and June 2015 were collected. The tumor location, pathological types, imaging features, mode of enhancement, and the bile duct expansion were analyzed.

[A simple method for evaluation of the stability of magnetic resonance scanner during brain function imaging].

Objective: To develop a simple method for evaluating the stability of magnetic resonance (MR) scanner during brain function imaging.

Method: A symmetrical water phantom was scanned using the same sequence and parameters as for brain function imaging. The stability of MR scanner was evaluated in view of the signal levels of phantom images.

[Quantitative study of diffusion weighted imaging on magnetic resonance imaging in focal hepatic lesions less than 3 cm].

Objective: To evaluate the characteristics of MR imaging of hepatic lesions using measurement of apparent diffusion coefficient (ADC) value of hepatic lesions on diffusion weighted imaging.

Methods: MR diffusion weighted images were obtained in patients with 97 hepatic lesions (22 hepatocellular carcinomas, 21 metastatic tumors, 28 hemangiomas, 26 cysts). ADC values were evaluated with different sequences.

[Clinical analysis of the relationship between injury of the marginal division and cognitive impairment].

Objective: To investigate the relationship between injury in the marginal division (MrD) of the striatum and the cognitive impairment.

Methods: Twenty patients with injury in the MrD of the striatum were examined routinely by magnetic resonance imaging (MRI). Cognitive tests of each patient were performed and the results evaluated against their MRI findings.

[Role of the marginal division of human neostriatum in working memory capacity for numbers received through hearing: a functional magnetic resonance imaging study].

Objective: With the help with functional magnetic resonance imaging (fMRI) technique, we aim to clarify whether the marginal division of the striatum (MrD) is involved in the working memory function of human brain for remembering numbers received through hearing.

Methods: Thirteen healthy volunteers were instructed to undertake both a working memory task, in which the subjects were asked to remember as many numbers read to them as possible, and a non-working memory control task, in which the subjects were not asked to remember the numbers. FMRI of the brain was performed in the 2 groups while the tests were being carried out separately, and the activity of the brain regions was compared between these 2 tasks.

[Hemorrhage in the medial areas of bilateral putamens causing deficiency of memory and calculation: report of one case].

Bilateral cerebral hemorrhages in the medial areas of bilateral putamens that impair the memory and calculation abilities are rare clinical entities. In the case presently reported, the patient suffered initial cerebral hemorrhage 3 years ago in the medial area of putamen on the right side with light left paralysis but the learning and memory functions were intact. A recent cerebral hemorrhage on the left side leaving mild paralysis of the right upper limb, however, had caused considerable loss of his recent memory and calculation ability.

[Dynamic evaluation of rabbit VX2 hepatic carcinoma with CT and MRI].

Objective: To dynamically monitor the growth of rabbit VX2 hepatoma by CT and MRI, and to understand the CT and MRI features during different periods of tumor growth.

Methods: The plain and dual-phase enhanced CT as well as the plain and enhanced MRI were performed in all the 10 rabbit VX2 hepatoma models (with 20 foci) at 1, 2 and 3 weeks after tumor implantation.

Results: The detection rate of the VX2 tumors by CT and MRI was low at 1 week after implantation, but was raised to 100% after another week.