Publications by authors named "T Nitatori"

Background: Autosomal dominant polycystic kidney disease (ADPKD) is a hereditary kidney disease characterized by the progressive enlargement of innumerable renal cysts. Although the association of intracranial aneurysms (ICANs) with ADPKD is well known, the relationship between the ICAN and the disease severity including total kidney volume (TKV) and estimated glomerular filtration rate (eGFR) is poorly understood.

Methods: We screened 265 patients with ADPKD (mean age, 48.

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Article Synopsis
  • The study examines the challenges of catheter ablation for atrioventricular nodal reentrant tachycardia (AVNRT), particularly the risk of causing AV block due to close proximity between the His recording site and the coronary sinus ostium (TOK).
  • Researchers evaluated various anatomical parameters, including aortic dimensions and echocardiogram results, in 28 patients to predict small TOK during the ablation procedure.
  • Findings revealed that aortic unfolding was the only significant predictor of smaller TOK, while longer aortic lengths and larger left ventricular dimensions were also associated with the size of TOK.
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Background: Kidney volume (KV) becomes clinically relevant in autosomal dominant polycystic kidney disease (ADPKD) management. KV can be conveniently estimated (ceKV) using ellipsoid volume equations with three axes measurements; however, the accuracy and reliability are unknown.

Methods: KVs of 347 kidneys in 177 consecutive ADPKD patients were determined with a volumetric method (standard-KV), and ceKV was calculated using six different ellipsoid equations with three axes measurements using magnetic resonance imaging.

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The aim of this study is to develop a novel non-contrast 4-dimensional MR arterial spin labeling (4D-ASL) technique (3D acquisition and time) and to investigate myocardial perfusion on healthy volunteers without administration of contrast materials. A non-contrast 4D-ASL technique was developed using the time-spatial labeling inversion pulse (Time-SLIP) to obtain myocardium perfusion of eight volunteers at 1.5 T.

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Background: The total kidney volume (TKV) and total liver volume (TLV) increase and renal function decreases progressively in patients with autosomal dominant polycystic kidney disease (ADPKD). Somatostatin analogues, such as octreotide, reduce these increases in TKV and TLV. The aim of this study was to examine the safety of the short-term administration of octreotide long-acting release (octreotide-LAR) in a small number of cases.

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