Hiroaki Arakawa

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RATIONALE Patients with a clinicopathological diagnosis of idiopathic pulmonary fibrosis (IPF) may have typical findings of usual interstitial pneumonia (UIP) on computed tomography (CT) or nonspecific or atypical findings, including those often seen in nonspecific interstitial pneumonia. OBJECTIVES The aims of this study were to revisit the(More)
STUDY OBJECTIVES We described the features seen on serial high-resolution CT scans of nonspecific interstitial pneumonia (NSIP) that was associated with polymyositis (PM) and dermatomyositis (DM), and we correlated the changes in the CT scan findings with those of pulmonary function test results. DESIGN, SETTING AND PATIENTS Serial CT scans of 14 patients(More)
PURPOSE To retrospectively evaluate pleural disease on images from patients with autopsy-proved silicosis. MATERIALS AND METHODS The study had institutional review board approval, and informed consent from relatives of diseased subjects was waived. Lung specimens were obtained at autopsy in 110 men (mean age, 72 years) who had been followed up(More)
OBJECTIVE The objective of our study was to determine factors associated with enhancement on CT pulmonary angiography and CT venography. MATERIALS AND METHODS Two hundred forty-two cases (83 men and 159 women; mean age, 63 years; age range, 21-92 years) underwent CT pulmonary angiography using a bolus-tracking technique; 189 cases subsequently underwent(More)
OBJECTIVE Originally used to describe the macroscopic appearance of various pathologic processes with multiple cysts, honeycomb lung is now the term used to describe endstage pulmonary fibrosis. The purpose of this article is to discuss the history and imaging of honeycomb lung. CONCLUSION Honeycomb lung is considered one of the important CT findings in(More)
PURPOSE To determine thin-section computed tomography (CT) characteristics of acute eosinophilic pneumonia (AEP). MATERIALS AND METHODS Thin-section CT scans of 29 patients (14 males, 15 females; mean age, 26+/-15 years; age range, 15-72 years) with AEP were included this retrospective study. The clinical diagnosis of AEP was established by Allen's(More)
PURPOSE To prospectively evaluate if findings on paired inspiratory and expiratory thin-section computed tomographic (CT) scans in patients with silicosis correlate with pulmonary function test results. MATERIALS AND METHODS Institutional review board approval and patient consent were obtained. Thirty-seven men (mean age, 71 years; range, 53-88 years)(More)
OBJECTIVE The objective of our study was to evaluate serial CT changes from normal or near-normal lungs to honeycomb lungs in dust-exposed patients who developed chronic interstitial pneumonia. MATERIALS AND METHODS From the records of the national hospital for pneumoconiosis, we retrospectively identified patients with chronic interstitial pneumonia who(More)
PURPOSE The purpose of this study was to identify independent CT findings that correlated with pulmonary function tests (PFTs) in patients with obstructive airway diseases. MATERIALS AND METHODS Sixty-eight patients with obstructive airway disease and 29 normal subjects (mean age, 52 years; 36 men and 61 women) underwent inspiratory and expiratory(More)
PURPOSE To characterize thin-section computed tomographic (CT) findings of pathologic subgroups of nonspecific interstitial pneumonia (NIP) in a sizeable number of patients. MATERIALS AND METHODS The study included 55 cases of pathologically proven NIP. The 55 cases were categorized histologically into four grades: grade 1, interstitial inflammation(More)