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Clinical Benefits of Arterial Spin-Labeling Magnetic Resonance Imaging for Primary Diffuse Large B-cell Lymphoma of the Central Nervous System Presenting With Lymphomatosis Cerebri: A Case Report.
Cureus
August 2024
Department of Neurosurgery, Hamamatsu University School of Medicine, Hamamatsu, JPN.
Of the primary central nervous system (CNS) lymphomas, diffuse large B-cell lymphoma of the CNS (CNS-DLBCL) is an aggressive extranodal lymphoma that originates in the CNS. Lymphomatosis cerebri (LC) is an exceptionally rare subtype, posing diagnostic challenges due to the absence of abnormal enhancement and making the identification of suitable biopsy sites difficult. Arterial spin-labeling magnetic resonance imaging (ASL-MRI) is a non-invasive MRI technique that quantifies tumor blood flow.
View Article and Find Full Text PDFDevelopment of an individual display optimization system based on deep convolutional neural network transition learning for somatostatin receptor scintigraphy.
Radiol Phys Technol
March 2024
Faculty of Life Sciences, Kumamoto University, 4-24-1 Kuhonji, Kumamoto, 862-0976, Japan.
Somatostatin receptor scintigraphy (SRS) is an essential examination for the diagnosis of neuroendocrine tumors (NETs). This study developed a method to individually optimize the display of whole-body SRS images using a deep convolutional neural network (DCNN) reconstructed by transfer learning of a DCNN constructed using Gallium-67 (Ga) images. The initial DCNN was constructed using U-Net to optimize the display of Ga images (493 cases/986 images), and a DCNN with transposed weight coefficients was reconstructed for the optimization of whole-body SRS images (133 cases/266 images).
View Article and Find Full Text PDFFatal Arrhythmic Risks in Cardiac Sarcoidosis With Mildly Impaired Cardiac Function.
JACC Asia
October 2023
Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Osaka, Japan.
Background: The prognosis and later fatal arrhythmia in cardiac sarcoidosis (CS) with relatively preserved cardiac function were unclear.
Objectives: This study aimed to evaluate the prognosis and arrhythmic events in patients with CS and mildly impaired cardiac function.
Methods: Data were collected from a nationwide Japanese cohort survey conducted in 57 hospitals (n = 420); 322 patients with CS with left ventricular ejection fraction (LVEF) >35% were investigated.
Clinical Outcomes of Radiologic Relapse in Patients With Cardiac Sarcoidosis Under Immunosuppressive Therapies.
Am J Cardiol
February 2023
Department of Cardiovascular Medicine, National Cerebral and Cardiovascular Center, Suita, Japan.
Although nuclear imaging can detect cardiac involvement of cardiac sarcoidosis (CS), including subclinical states, little is known about the prevalence and outcomes of radiologic relapse under prednisolone (PSL) therapy. This study aimed to investigate the clinical characteristics and outcomes in patients with radiologic relapse. A total of 80 consecutive patients with CS whose disease activity on nuclear imaging decreased at least once after initiation of immunosuppressive therapy were identified through a retrospective chart review.
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