OBJECTIVES Transthoracic echocardiography (TTE) is fundamental in managing patients supported with ventricular assist devices (VAD). However imaging can be difficult in these patients. Contrast improves image quality but they are hydrodynamically fragile agents. The aim was to assess contrast concentration following passage through a VAD utilising a mock circulation loop (MCL). METHODS Heartw...

Popliteal cyst commonly presents as an ellipsoid mass with uniform low signal intensity on T1-weighted magnetic resonance images and high signal intensity on T2-weighted images. Here, we describe a popliteal cyst with unusual appearance on magnetic resonance imaging, including heterogeneous intermediate signal intensity on T2-weighted images. Arthroscopic cyst decompression revealed that the cy...

Microscopically, ovarian malignant Brenner tumor shows components of malignant transitional cell tumor intermixed with benign and borderline elements. We report a case of this tumor with components that transition from benign to malignant on diffusion-weighted images (DWI) and in histologic findings. The benign component showed low signal intensity on T(2)-weighted images, whereas the malignant...

Background/introduction MR guided high-intensity focused ultrasound (HIFU) ablation is increasingly being used worldwide to treat symptomatic uterine fibroids because of its excellent therapeutic efficacy in controlling symptoms and its excellent safety record. High signal intensity on T2WI MR images of fibroids is firstly considered a factor that induces poor ablation outcomes. Nevertheless, t...

Wavelength reuse in a bidirectional radio-over-fiber link is proposed and demonstrated based on the cross-gain modulation (XGM) and the cross-polarization modulation in a semiconductor optical amplifier (SOA). With a polarization beam splitter placed at the remote antenna unit, the polarization-modulated signal generated at the SOA is converted into noninverted and inverted intensity-modulated ...

Background/introduction T2 signal intensity and perfusion MR findings are known to be important influencing factors for therapeutic response of uterine fibroids to MR-guided high-intensity focused ultrasound (MR-HIFU) ablation. While T2 signal intensity of fibroids is easy to assess, perfusion MRI is relatively difficult to perform. The aim of this study was to evaluate relationships between T2...

SAKARYA,M.E.,IRMAK,H.,ETLI K,Ö.,EVI RGEN,Ö.,TEMI ZÖZ,O.and SAKARYA,N. MR Findings in Pericardial Hydatid Cyst. Tohoku J.Exp.Med., 2003,199(3),181-185――Pericardial hydatid cyst is rare.We present a 32-yearold man with a pericardial hydatid cyst.Chest X-ray film showed a spherical mass located left mediastinum.A pericardial cyst with low signal intensity was noted on T1 weighted magnetic resonanc...

Regionalized magnetic resonance (MR) signal intensities were quantitatively measured in impinged and unimpinged anterior cruciate ligament (ACL) grafts. Images were obtained with a 1.5-T imager, and signal intensity was measured in the proximal, middle, and distal thirds of the graft. In 15 unimpinged ACL grafts, the signal intensity remained low and did not vary during the 1st year of graft im...