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MRI of omphalopagus conjoined twins with a Dandy-Walker malformation: prenatal true FISP and HASTE sequences.

Unal O, Arslan H, Adalı E, Bora A, Yıldızhan R, Avcu S

From the Departments of Radiology Yüzüncü Yil University School of Medicine, Van, Turkey.

Conjoined twins are an extremely rare congenital malformation without any known genetic predisposition. Omphalopagus twins are the second most common variety of conjoined twins and usually are joined at the umbilicus. We present omphalopagus conjoined twins demonstrated with true FISP (fast imaging with steady-state procession) and HASTE (half- Fourier acquisition single-shot turbo spin-echo) magnetic resonance imaging (MRI) sequences, which showed Dandy- Walker malformation in one of the pair. To our knowledge, this is the first case of conjoined twins with this malformation, which was diagnosed with ultrafast MRI.

Published 8 March 2010 in Diagn Interv Radiol, 16(1): 66-69.
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Articles on MRI published 8 March 2010:

Intracranial arterialized venous angioma: case report with new insights from functional brain MRI.   Diagn Interv Radiol, 16(1): 13-15.

We present the case of a 58-year-old man who suffered a left thalamic intracerebral hemorrhage. Brain magnetic resonance imaging (MRI) revealed an incidental venous angioma in the left frontal lobe. Further elucidated by cerebral angiography and functional MRI, this venous angioma exhibited arteriovenous shunting. The arterialized venous angioma represents an uncommon, "mixed" intracranial vascular lesion whose natural history remains unknown. [Abstract] [Full-text]

MRI findings of papillary cystadenocarcinoma of the submandibular gland.   Diagn Interv Radiol, 16(1): 20-23.

Papillary cystadenocarcinoma is an extremely rare malignant tumor of the salivary glands. Major locations of this neoplasm are the parotid gland, sublingual gland, and minor salivary glands, while occurrence in the submandibular gland is extremely rare. Magnetic resonance imaging (MRI) findings of this lesion have not been reported in the literature. Herein, we present a case of papillary cystadenocarcinoma arising from the right submandibular gland. MRI showed a 5-cm mass composed of solid and ... [Abstract] [Full-text]

Fast MRI evaluation of pulmonary progressive massive fibrosis with VIBE and HASTE sequences: comparison with CT.   Diagn Interv Radiol, 16(1): 30-37.

PURPOSE The aim of this prospective study was to evaluate the diagnostic utility of volumetric interpolated breath-hold examination (VIBE) and half-Fourier-acquisition single-shot turbo spin-echo (HASTE) fast magnetic resonance imaging (MRI) sequences in the evaluation of pulmonary progressive massive fibrosis (PMF) in comparison with computed tomography (CT) imaging. If fast MRI is proven to be diagnostically significant, this modality can be used for diagnosis and follow-up studies of PMF ... [Abstract] [Full-text]

Dual-echo TFE MRI for the assessment of myocardial iron overload in beta-thalassemia major patients.   Diagn Interv Radiol, 16(1): 59-62.

PURPOSE Cardiac failure due to myocardial iron overload is the most common cause of death in beta-thalassemia patients. Multi/ two echo times-turbo field echo (TE-TFE) magnetic resonance imaging (MRI) is considered the gold standard technique in the evaluation of myocardial iron accumulation. However, multi TE-TFE technique is not available in all scanners. The aim of our study was to show the role of black blood dualecho cardiac triggered TFE in the assessment of myocardial iron overload. ... [Abstract] [Full-text]

Pancreatic metastases: CT and MRI findings.   Diagn Interv Radiol, 16(1): 45-51.

PURPOSE The pancreas is an unusual but occasionally favored site for metastases in patients with advanced malignancy. The pivotal role of computed tomography (CT) and magnetic resonance imaging (MRI) examination in detecting the pancreatic mass and providing guidance to obtain a definitive tissue diagnosis is emphasized in this study. MATERIALS AND METHODS Eleven patients with pancreatic metastases, 4 women and 7 men with a mean age of 62.45 years, were examined in a period of 5 years. All ... [Abstract] [Full-text]

Visualization of subdural electrodes with fusion CT scan/MRI during neuronavigation-guided epilepsy surgery.   J Clin Neurosci, 17(4): 511-513.

Neuronavigation in epilepsy surgery enables surgeons to accurately resect deep targets inside the brain, especially lesions that are unable to be visually differentiated from adjacent normal brain. The usefulness of visualizing subdural electrodes with postimplantation fusion CT/MRI was investigated. The use of platinum subdural electrodes made it possible to obtain postimplantation MRI. The postimplantation MRI and CT scans were fused on the surgical navigation system workstation to form ... [Abstract] [Full-text]

Reappraisal of brain MRI features in patients with multiple sclerosis and neuromyelitis optica according to anti-aquaporin-4 antibody status.   J Neurol Sci, 291(1): 37-43.

Brain lesions are not uncommon in neuromyelitis optica (NMO) patients with anti-aquaporin-4 (AQP4) antibody; however, the appearance of these lesions is said to be different from that of those in Western patients with multiple sclerosis (MS). To clarify the similarities and dissimilarities of brain lesions in anti-AQP4 antibody-positive and -negative MS and NMO patients, we examined the presence of anti-AQP4 antibody in the sera of 148 consecutive patients fulfilling Poser's criteria for ... [Abstract] [Full-text]

Lung Function Measurement of Single Lungs by Lung Area Segmentation on 2D Dynamic MRI.   Acad Radiol, 17(4): 496-503.

RATIONALE AND OBJECTIVES: Most lung disease is inhomogeneously distributed but diagnosed by global spirometry. Regional lung function might allow for earlier diagnosis. Dynamic two-dimensional magnetic resonance imaging (2D-MRI) can depict lung motion with high temporal resolution. We evaluated whether measurement of lung area on dynamic 2D-MRI has sufficient agreement with spirometry to allow for lung function testing of single lungs. MATERIAL AND METHODS: Ten healthy volunteers were examined ... [Abstract] [Full-text]

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