Publications by authors named "Hiromi Hashimura"

Background: Combination chemotherapy has improved cancer outcomes; however, identifying suspected cardiotoxic chemotherapies can be challenging when multiple chemotherapies are initiated simultaneously.

Case Summary: A 58-year-old woman with endometrial cancer developed heart failure, with a reduced left ventricular ejection fraction of 26%, 10 months after combined pembrolizumab and lenvatinib after doxorubicin. Cardiac magnetic resonance revealed acute myocarditis.

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: Nusinersen is a disease-modifying drug for spinal muscular atrophy (SMA) that improves motor function. However, its effects on the skeletal muscles remain unclear. This study aimed to assess the intramuscular fat fraction in patients with SMA types II and III using muscle magnetic resonance imaging (MRI) and to explore the relationship between muscle tissue, lipid metabolism, and motor function during nusinersen treatment.

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Aortic root thrombosis is a rare but serious complication of antiphospholipid syndrome that can lead to myocardial infarction. Cardiac computed tomography and magnetic resonance imaging are essential for noninvasively evaluating myocardial infarction and aortic root thrombosis.

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Article Synopsis
  • Hemothorax from right intercostal artery (ICA) injury behind the left atrium (LA) is a serious complication in pulmonary vein isolation procedures, and this study aimed to explore their anatomical relationship.
  • A total of 100 patients were examined through cardiac computed tomography, focusing on the distance between the LA and right ICAs, finding an average of 3.7 right ICAs with varying closeness, particularly shorter in patients with atrial fibrillation.
  • The study concludes that understanding the proximity of right ICAs to the LA is crucial, especially in individuals with enlarged LA or thinner chest cavities, as they are at higher risk for ICA injury during surgery.
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Rationale And Objectives: Pericardial fat (PF)-the thoracic visceral fat surrounding the heart-promotes the development of coronary artery disease by inducing inflammation of the coronary arteries. To evaluate PF, we generated pericardial fat count images (PFCIs) from chest radiographs (CXRs) using a dedicated deep-learning model.

Materials And Methods: We reviewed data of 269 consecutive patients who underwent coronary computed tomography (CT).

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Knowing the vascular anatomy of the common femoral artery bifurcation and ultrasound-guided puncture, including doppler, is helpful in recognizing anatomic variations and avoiding complications.

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Congenital cytomegalovirus infection (cCMV) can cause fetal growth restriction (FGR) and severe sequelae in affected infants. Clinicians generally suspect cCMV based on multiple ultrasound (US) findings associated with cCMV. However, no studies have assessed the diagnostic accuracy of fetal US for cCMV-associated abnormalities in FGR.

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Objective: Both myocardial perfusion scintigraphy and F-fluorodeoxyglucose positron emission tomography (FDG PET) are useful for the diagnosis of cardiac sarcoidosis (CS). However, the association between the washout of Tc-labeled tracer and FDG PET has not been established. This study aimed to evaluate the association between the washout of Tc-labeled tracer and FDG PET findings in patients with CS.

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The present study investigated the clinical value of myocardial contrast-delayed enhancement (DE) with multidetector computed tomography (MDCT) without iodine re-injection immediately after primary percutaneous coronary intervention (PCI) for predicting future cardiovascular events after acute myocardial infarction (AMI). We performed a prospective study in which 263 consecutive patients with first AMI successfully treated with primary PCI were enrolled. Sixty-four-slice MDCT without the re-injection of contrast medium was performed immediately after PCI.

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Cardiac magnetic resonance (MR) imaging with late gadolinium enhancement (LGE) is used to detect and assess the myocardial damage seen with a variety of cardiomyopathies. Gadolinium-based contrast material accumulates in the expanded interstitial space of the myocardium. Areas with LGE correspond to replacement fibrosis, fibrofatty change, epithelioid granuloma, inflammatory cell infiltration, cardiomyocyte necrosis, and amyloid deposition-conditions that represent a focal increase in interstitial space.

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Hypertrophic cardiomyopathy (HCM) with systolic dysfunction carries a poor prognosis. Although late gadolinium enhancement (LGE) on cardiac magnetic resonance is associated with adverse cardiac events in HCM and is inversely related to left ventricular ejection fraction (LVEF), it is unknown whether LGE or LVEF more accurately predicts adverse cardiac events in HCM with systolic dysfunction. We retrospectively assessed the extent of LGE with a threshold of 6 standard deviations in 46 consecutive HCM patients with systolic dysfunction defined as LVEF <50 % (average 35 ± 12 %) who underwent cardiac magnetic resonance (35 males, mean age 59 ± 14 years).

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Gadolinium contrast agents used for late gadolinium enhancement (LGE) distribute in the extracellular space. Global diffuse myocardial LGE pronounced in the subendocardial layers is common in cardiac amyloidosis. However, the pathophysiological basis of these findings has not been sufficiently explained.

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Identification of the Adamkiewicz artery (AKA) using CT angiography (CTA) is crucial in patients with thoracic aortic aneurysm (TAA) or aortic dissection (AD). The purpose of this study was to compare the AKA detection rate of intravenous injection with a 64-slice MDCT (IV64) versus a 16-slice MDCT (IV16) as well as by CTA using intra-arterial injection with a 16-slice MDCT (IA16). A retrospective review of 160 consecutive patients who underwent CTA was performed.

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Purpose: Myocardial fibrosis is considered to be an important factor in myocardial dysfunction and sudden cardiac death in hypertrophic cardiomyopathy (HCM). The purpose of this study was to compare myocardial fibrosis detected by late gadolinium enhancement (LGE) on cardiac MRI with myocardial perfusion and fatty acid metabolism assessed by single photon emission computed tomography in HCM.

Materials And Methods: We retrospectively evaluated 20 consecutive HCM patients (female, 7; mean age, 53.

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Purpose: To detect abnormal myocardial tissue in patients with diffuse myocardial disease, we propose a simple technique of late gadolinium enhancement (LGE) using routine myocardial imaging modalities.

Materials And Methods: We retrospectively reviewed LGE images from 51 patients with normal myocardium and 10 patients with pathologically proven cardiac amyloidosis (CA). We obtained sequential LGE images from patients at 2, 5, 10, and 20 minutes after injection of Gd-DTPA (0.

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