Increased signal intensity of the cochlea on pre- and post-contrast enhanced 3D-FLAIR in patients with vestibular schwannoma

Introduction  

In the vestibular schwannoma patients, the pathophysiologic mechanism of inner ear involvement is still unclear. We investigated the status of the cochleae in patients with vestibular schwannoma by evaluating the signal intensity of cochlear fluid on pre- and post-contrast enhanced thin section three-dimensional fluid-attenuated inversion recovery (3D-FLAIR).     

Évolution chez l'homme de l'Insulin-Like Growth Factor-I dans le liquide interstitiel musculaire suite à un exercice en résistance

Introduction

The impact of resistance exercise on the growth of the vastus lateralis was assessed through interstitial microdialysis measurement of free Insulin-like Growth Factor-I at +3 h30, +4 h50 and +6 h after exercise in 4 healthy subjects.

Results

We observed 3 h30 after exercise an interstitial increase in 3 over 4 subjects, and thereafter a progressive decrease. In the mean time, free or total plasma concentrations did not change.

Conclusion

Resistance exercise seemed to induce an early increase of muscle interstitial free Insulin-like Growth Factor-I in order to initiate muscle growth by an autocrine – paracrine way.     

What is the optimal b value in diffusion-weighted MR imaging to depict prostate cancer at 3T?

Objective  

To determine an optimal b value to visualise prostate cancer using diffusion-weighted magnetic resonance imaging at 3 T.     

Criterion-related validity of four clinical tests used to measure hamstring flexibility in professional futsal players

Objective

To examine the criterion related validity of the sit-and-reach test (SR), toe touch test (TT), modified sit-and-reach test (MSR) and back-saver sit-and-reach test (BSSR) for estimating hamstring flexibility measured through the passive straight leg raise test (PSLR) in professional futsal players.

Design

Correlation laboratory study.

Setting

Controlled laboratory environment.

Participants

One hundred and three futsal players (55 males age 26 ± 4 years, 48 females age 23 ± 5 years).

Main outcome measures

Two trials of SR, TT, MSR, BSSR (left and right) and PSLR right and left (hamstring criterion measure) in a randomized order.

Results

Regression analysis was performed to examine the association of SR, TT, MSR and BSSR with PSLR in both males and females separately. In males, only MSR test had moderate association criterion with PSLR (R² = 0.57). In females, SR (R² = 0.86), TT (R² = 0.85), MSR (R² = 0.53) and average BSSR (R² = 0.82) were associated with PSLR.

Conclusions

SR, TT, MSR and BSSR had moderate criterion related validity for estimating hamstring flexibility in female but not male professional futsal players. The authors recommend that researchers, clinicians, and physical therapists adopt one angular test as a measure of hamstring muscle length in futsal players.     

Diagnostic value of 3D contrast-enhanced magnetic resonance angiography in Takayasu's arteritis--a comparative study with digital subtraction angiography

Objective  

To assess the diagnostic value of 3D CEMRA in TA compared with DSA.     

Modular MR-compatible lower leg exercise device for whole-body scanners

Purpose  

To develop a modular MR-compatible lower leg exercise device for muscle testing using a clinical 3 T MR scanner.     

Intra-individual, randomised comparison of the MRI contrast agents gadobutrol and gadoterate in imaging the distal lower limb of patients with known or suspected osteomyelitis, evaluated in an off-site blinded read

Objective  

To prove that 1.0 M gadobutrol provides superior contrast enhancement in suspicion of osteomyelitis of the feet compared with 0.5 M gadoterate.     

Analysis of stereotactic vacuum-assisted breast biopsy for patients with segmental calcifications

Purpose  

To evaluate the results of stereotactic vacuum-assisted breast biopsy of segmental calcifications.     

MR imaging of the brachial plexus: comparison between 1.5-T and 3-T MR imaging: preliminary experience

Objective  

To compare 1.5-T and 3-T magnetic resonance (MR) imaging of the brachial plexus.     

CT colonography and transient bacteraemia: implications for antibiotic prophylaxis

Objectives  

To determine the prevalence of transient bacteraemia after CT colonography (CTC).     

Demonstration of intrahepatic accumulated microbubble on ultrasound represents the grade of hepatic fibrosis

Objectives  

To examine the feasibility of perflubutane-based ultrasound for grading hepatic fibrosis.     

The reliability and validity of radiological assessment for patellar instability. A systematic review and meta-analysis

Objective  

To determine the discriminative validity and reliability of the evidence base using meta-analysis.     

Dual-energy-CT of hypervascular liver lesions in patients with HCC: investigation of image quality and sensitivity

Objective  

To investigate dual-energy CT of hypervascular liver lesions in patients with HCC.     

Treatment of severe vertebral body compression fractures with percutaneous vertebroplasty

Objective  

Evaluate the efficacy of percutaneous vertebroplasty for severe vertebral body compression fractures.     

Imaging features of glomus tumors

Objective  

To describe the imaging findings with pathologic correlation and clinical presentation of glomus tumors.     

Radiologic findings of osteoarticular infection in paracoccidioidomycosis

Objective  

To report the radiological abnormalities of osteoarticular involvement in paracoccidioidomycosis (PCM).     

Magnetic resonance (MR) colonography in the detection of colorectal lesions: a systematic review of prospective studies

Objective  

To determine the diagnostic accuracy of MR-colonography for the detection of colorectal lesions.     

Radiologists’ responses to inadequate referrals

Objectives  

To investigate radiologists’ responses to inadequate imaging referrals.     

Subcutaneous epidermal inclusion cysts: Ultrasound (US) and MR imaging findings

Objective  

To describe the characteristic US and MR findings of subcutaneous epidermal inclusion cysts.