Feng-Chi Chang

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BACKGROUND AND PURPOSE Percutaneous vertebroplasty is known for its pain-relieving effect. Our purpose was to evaluate its effect on the kyphosis angle, wedge angle, and height of the fractured vertebral body. METHODS We reviewed digital radiographs of 73 vertebral bodies in 53 patients before and after vertebroplasty. We measured the spinal kyphosis(More)
BACKGROUND AND PURPOSE Transarterial detachable balloon embolization of direct carotid cavernous fistulas (DCCFs) has become an optimal treatment. In a few cases, the parent artery has to be sacrificed to achieve morphologic cure. We present our experience with transarterial balloon-assisted n-butyl-2-cyanoacrylate (n-BCA) embolization of DCCFs in which(More)
OBJECTIVES To investigate the clinical pictures of patients with recurrent thunderclap headaches of unknown etiology and to field-test two relevant International Classification of Headache Disorders, 2nd edition (ICHD-II) criteria, i.e., primary thunderclap headache (Code 4.6) and benign (or reversible) angiopathy of the CNS (Code 6.7.3). METHODS We(More)
BACKGROUND The mechanism of transient global amnesia (TGA) is not clear. Attempting to support the hypothesis that retrograde venous hypertension causing cerebral venous ischemia plays a role in the pathogenesis of TGA, the authors used cranial three-dimensional time-of-flight (TOF) MR angiography (MRA) to detect a possible intracranial retrograde venous(More)
BACKGROUND The purpose of the current study was to investigate a hospital series of 986 cases of primary pediatric brain tumors in Taiwan. METHODS The authors reviewed the database of primary pediatric brain tumors in patients < 18 years of age collected in Taipei Veterans General Hospital (Taipei VGH) from 1975 to May 2004. Age and gender distribution,(More)
OBJECTIVE Reversible cerebral vasoconstriction syndromes (RCVS) are characterized by thunderclap headaches and reversible cerebral vasoconstrictions. No systematic studies on cerebral hemodynamics have been published. METHODS Patients with RCVS were consecutively recruited. Sequential transcranial color-coded sonography studies were performed on the(More)
OBJECTIVE To estimate the prevalence of gout and to examine its risk factors among Taiwan's Aborigines compared with non-Aborigines. METHODS Data were collected from persons older than 40 years living in 3 aboriginal and 2 non-aboriginal districts in Taiwan by a community survey. Cases of gout were identified from self-reporting of a doctor's diagnosis(More)
OBJECTIVE To investigate the evolution and clinical significance of vasoconstriction on magnetic resonance angiography (MRA) in patients with reversible cerebral vasoconstriction syndromes (RCVS). METHODS Patients with RCVS were recruited and followed up with MRA examinations until normalization of vasoconstriction or for 6 months. The vasoconstriction(More)
Endoscopy has been applied for the management of pineal tumors and the associated obstructive hydrocephalus. The techniques include endoscopic third ventriculostomy (ETV), endoscopic biopsy, and endoscopic-assisted open surgery of tumor in selected cases. The purpose of this study is to report our experience and techniques of endoscopic surgeries for pineal(More)
PURPOSE To present the MR features of spontaneous intracranial hypotension (SIH) and to discuss the correlation of MR features with clinical manifestations. MATERIAL AND METHODS Between 1997 and 2000, 15 patients with SIH underwent brain MR investigation. Lumbar puncture for the measurement of cerebrospinal fluid (CSF) pressure was performed in 6(More)