Takahiko Nakazono

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OBJECTIVE Interstitial lung disease (ILD) associated with polymyositis (PM) and dermatomyositis (DM) sometimes progresses rapidly and is resistant to therapy. Clinical features that forecast the prognosis of the disease remain to be elucidated. Our aim was to assess if selected clinical features and high-resolution computed tomography (HRCT) findings can(More)
Manganese (Mn) accumulation in the brain is detected as symmetrical high signal intensity in the globus pallidi on T1-weighted MR images without an abnormal signal on T2-weighted images. In this review, we present several cases of Mn accumulation in the brain due to acquired or congenital diseases of the abdomen including hepatic cirrhosis with a(More)
OBJECTIVE The objective of this article is to review the clinical, pathologic, and MRI findings of mediastinal neurogenic tumors according to the three tumor origins: the peripheral nerves, sympathetic ganglia, and paraganglia. CONCLUSION MRI findings reflect pathologic features of mediastinal neurogenic tumors. Integrating consideration of age and(More)
BACKGROUND To investigate the ability of diffusion weighted images (DWI) to differentiate between metastatic and nonmetastatic axillary lymph nodes (LNs) in patients with newly diagnosed breast cancer. METHODS From January 2010 to February 2012, DWI was performed at b values of 0 and 800 for 16 metastatic LNs from 16 patients with breast cancer, and 20(More)
Retrograde flow in the left dural sinuses is sometimes detected by three-dimensional time-of-flight (3D-TOF) magnetic resonance (MR) angiography. The purpose of this study was to evaluate the incidence of this phenomenon and its characteristic features on 3D-TOF MR angiograms. We retrospectively reviewed cranial MR angiography images of 1,078 patients(More)
Diffusion-weighted imaging (DWI) reflects changes in proton mobility caused by pathological alterations of tissue cellularity, cellular membrane integrity, extracellular space perfusion, and fluid viscosity. Functional imaging is becoming increasingly important in the evaluation of cancer patients because of the limitations of morphologic imaging. DWI is(More)
BACKGROUND Patients with clinical IA (C-IA) lung cancer have a 5-year survival rate of approximately 70% after surgical therapy alone. We attempted to clarify preoperative factors that are predictive for poor prognosis after surgery among patients diagnosed with C-IA adenocarcinoma of the lung. METHODS Between 1994 and April 2002, 65 patients with C-IA(More)
PURPOSE Cardiac ventricular diverticulum is a rare congenital malformation. The entity is usually asymptomatic but can rarely cause complications and mimic other severe cardiac diseases on imaging. We evaluated the incidence and imaging findings of left and right ventricular diverticula on electrocardiogram-gated 256-slice multidetector computed tomography(More)
BACKGROUND Although the Trendelenburg position and shoulder bracing are recommended for safe subclavian venipuncture, the optimal shoulder position remains unclear. The current study observed spatial relations between the subclavian vein and surrounding structures using multislice computed tomography to determine optimal shoulder position for safe(More)
Hibernoma is an uncommon, benign soft tissue tumor that arises in brown adipose tissue. The computed tomography (CT) and magnetic resonance imaging (MRI) findings of hibernomas are similar to those of well-differentiated liposarcoma or angiolipoma. We report the unique appearance of a rare thoracic wall hibernoma, which appeared as a dumbbell-shaped(More)