High-resolution Magnetic Resonance Imaging of Moyamoya Disease

Response to letter regarding article, "high-resolution magnetic resonance wall imaging findings of Moyamoya disease".

Letter by Shang et al regarding article, "high-resolution magnetic resonance wall imaging findings of Moyamoya disease".

BACKGROUND AND PURPOSE Diagnosis of Moyamoya disease (MMD) is based on the characteristic angiographic findings. However, differentiating MMD from intracranial atherosclerotic disease (ICAD) is difficult. We compared vessel wall imaging findings on high-resolution magnetic resonance imaging between MMD and ICAD. METHODS High-resolution magnetic resonance imaging was performed on 32 patients w...

High-resolution turbo magnetic resonance angiography for diagnosis of Moyamoya disease.

BACKGROUND AND PURPOSE High-resolution turbo MR angiography with zero-filling interpolation (ZFI) technique is a new vascular imaging method with reduced scan time. The purpose of the present study was to evaluate high-resolution turbo MR angiography for the diagnosis and assessment of moyamoya disease. METHODS Forty-six patients suspected of having moyamoya disease were examined with high-re...

Limb-shaking TIA related to moyamoya disease: diagnosis with magnetic resonance imaging and magnetic resonance angiography.

PURPOSE In a case with moyamoya disease, we found the magnetic resonance image and magnetic angiographic studies were helpful for the definite diagnosis of the disease. CASE REPORT A young adult presented limb-shaking transient ischemic attacks caused by moyamoya disease. The magnetic resonance angiography proved the steno-occlusive lesions in the major arteries of circle of Willis, and the m...

An investigation into the effect of magnetic resonance imaging (MRI) echo time spacing and number of echoes on the sensitivity and dose resolution of PAGATUG polymer-gel dosimeter

Background: There are various methods to read out responses of a polymer-gel dosimeter, among which the Magnetic Resonance Imaging (MRI) technique is the most common one. Optimizing imaging protocols can have significant effect on the sensitivity and the dose resolution of polymer gel dosimeters. This study has investigated the effects of the number of echoes (NOE) and the echo time spacing (ES...

Assessment of Moyamoya disease with 3.0-T magnetic resonance angiography and magnetic resonance imaging versus conventional angiography.

3.0-T magnetic resonance (MR) angiography and MR imaging were compared with conventional angiography for the evaluation of moyamoya disease in 13 preoperative patients (26 hemispheres) with moyamoya disease (4 males and 9 females aged 21-54 years). The correlation between MR angiography scores determined by modified Houkin's grading system (MRA score) and conventional angiography stages determi...