Publications by authors named "Saga T"

The high incidence of deep vein thrombosis (DVT) in evacuees has been recognized since the 2004 Niigata-Chuetsu Earthquake in Japan. We hypothesized that the number and location of communicating branches of the soleal veins might influence thrombus development and that the median septum of the soleus muscle influences the venous network of the soleal veins. This study aimed to investigate how the network of soleal veins varies with the shape and thickness of the median septum and to elucidate factors predisposing soleal veins to DVT.

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We retrospectively investigated mechanical thrombectomy (MT) in nonagenarians and older with cerebral infarction. Analysis of 21 consecutive patients showed favorable outcomes (improved modified Rankin scale [mRS] 0-2 or returned prestroke mRS) in 33.3% and poor outcome (mRS 5 or 6) in 52.

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  • Asymptomatic bronchial artery aneurysms (BAA) are rare but potentially fatal if they rupture, and the best treatment is bronchial artery embolization (BAE), which is minimally invasive.
  • A 74-year-old man was diagnosed with a mediastinal BAA after a CT scan showed a suspicious lesion, but during BAE, complications led to acute aortic dissection, requiring urgent surgical repair.
  • The situation highlighted the need for a flexible treatment approach, suggesting that TEVAR could be a viable option for BAA in challenging cases, ensuring prompt responses to complications like aortic dissection.
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An 83-year-old man underwent embolization for a type 2 endoleak following endovascular aortic repair for an abdominal aortic aneurysm. The type 2 endoleak originated from the left iliac circumflex artery, which was located very close to the puncture site in the left femoral artery. This proximity made the embolization procedure challenging; however, by employing a combination of a micropuncture introducer set and a triple-coaxial system, embolization with N-butyl-2-cyanoacrylate was successfully achieved.

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The patient was an 86-year-old woman. She was brought to the emergency department because of chest pain and respiratory distress symptoms that did not improve. 12-lead electrocardiogram, echocardiography, and blood tests were negative for acute coronary syndrome, but a chest contrast computed tomography( CT) -scan showed pericardial effusion and a coronary artery aneurysm 20 mm in diameter, and punctured pericardial effusion revealed bloody fluid.

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Soft tissue spaces not only enable gliding by contraction of the facial muscles, but they also cause drooping of the superficial fat due to gravity in the upright position. This study was performed to clarify the structures around the bucco-mandibular space (BMS) and to apply this anatomical knowledge to clinical practice. Four sides of the face were dissected using a conventional gross anatomical dissection technique, and 10 sides (5 horizontal and 5 frontal sections) of the removed semi-facial soft tissue were dissected using the stretched tissue dissection (STD) method.

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Information regarding follow-up duration after treatment for newly diagnosed diffuse large B-cell lymphoma (DLBCL) is important. However, a clear endpoint has yet to be established. We enrolled a total of 2,182 patients newly diagnosed with DLBCL between 2008 and 2018.

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Purpose: This study was conducted to evaluate whether thin-slice 2D fat-saturated proton density-weighted images of the shoulder joint in three imaging planes combined with parallel imaging, partial Fourier technique, and denoising approach with deep learning-based reconstruction (dDLR) are more useful than 3D fat-saturated proton density multi-planar voxel images.

Methods: Eighteen patients who underwent MRI of the shoulder joint at 3T were enrolled. The denoising effect of dDLR in 2D was evaluated using coefficient of variation (CV).

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Background: To evaluate the clinical usefulness of thin-slice echo-planar imaging (EPI)-based diffusion-weighted imaging (DWI) with an on-console distortion correction technique, termed reverse encoding distortion correction DWI (RDC-DWI), in patients with non-functioning pituitary neuroendocrine tumor (PitNET)/pituitary adenoma.

Methods: Patients with non-functioning PitNET/pituitary adenoma who underwent 3-T RDC-DWI between December 2021 and September 2022 were retrospectively enrolled. Image quality was compared among RDC-DWI, DWI with correction for distortion induced by B inhomogeneity alone (B-corrected-DWI), and original EPI-based DWI with anterior-posterior phase-encoding direction (AP-DWI).

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The posterolateral region of the knee has a complex and diverse anatomy. Hydrarthrosis of the knee can potentially communicate with other parts of the joint space. The joint fluid distribution reflects anatomical communications between synovial spaces.

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Purpose: To compare image distortion and reproducibility of quantitative values between reverse encoding distortion correction (RDC) diffusion-weighted imaging (DWI) and conventional DWI techniques in a phantom study and in healthy volunteers.

Methods: This prospective study was conducted with the approval of our institutional review board. Written informed consent was obtained from each participant.

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  • The ligamentum arteriosum (LA) is a remnant of the ductus arteriosus (DA), a fetal blood vessel that connects the left pulmonary artery to the aorta; if not completely closed, it can lead to a condition called patent ductus arteriosus (PDA), causing issues like pulmonary hypertension.
  • This study examined the LA from adult cadaveric specimens using various staining methods (Hematoxylin and Eosin, van Gieson, and Masson's trichrome) and found fibrous and muscle tissues present across all samples.
  • The research identified three types of LA based on their structure: Type I (4%) resembling a vessel, Type II (80%) as fibrot
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The hexagonal cells built by honey bees and social wasps are an example of adaptive architecture; hexagons minimize material use, while maximizing storage space and structural stability. Hexagon building evolved independently in the bees and wasps, but in some species of both groups, the hexagonal cells are size dimorphic-small worker cells and large reproductive cells-which forces the builders to join differently sized hexagons together. This inherent tiling problem creates a unique opportunity to investigate how similar architectural challenges are solved across independent evolutionary origins.

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  • Azacitidine (AZA) is a common treatment for older patients with serious blood disorders called myelodysplastic syndromes (MDS), but it's hard to predict how well it will work for each person.
  • In a study with 29 patients who started treatment, researchers looked at a type of hemoglobin in the blood called fetal hemoglobin (HbF) to see if it could help predict outcomes.
  • They found that patients with higher HbF levels before treatment did better, showing more improvement in their health and living longer than those with normal HbF levels.
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Objectives: The cryptic fusion oncogene NUP98::NSD1 is known to be associated with FLT3-ITD mutation in acute myeloid leukemia (AML), and an independent poor prognostic factor in pediatric AML. However, there are little data regarding the clinical significance of NUP98::NSD1 in adult cohort.

Methods: We conducted a multicenter retrospective study to investigate the prevalence, clinical characteristics, and prognostic impact of NUP98::NSD1 in adult FLT3-ITD-positive AML patients.

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We encountered a case of a double inferior vena cava with major predominance of the left inferior vena cava during an anatomical dissection course for medical students in 2015. The right inferior vena cava (normal inferior vena cava) was 2.0 mm wide, and the left inferior vena cava was 23.

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Objectives: The aim of this study was to assess the prognostic value of pretreatment Positron emission tomography / computed tomography using F-fluorodeoxyglucose (FDG-PET/CT) in cervical cancer according to two major histologic types.

Methods: Eighty-three squamous cell carcinoma (SCC) patients and 35 adenocarcinoma (AC) patients who underwent pretreatment FDG-PET/CT were retrospectively analyzed. Maximum standardized uptake value (SUV), mean standardized uptake value (SUV), metabolic tumor volume (MTV), and total lesion glycolysis (TLG) of the primary tumor were calculated.

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  • The study explores the connection between the geriatric nutritional risk index (GNRI) at the start of chemotherapy and side effects in patients with malignant lymphoma, especially those treated with (R-)EPOCH.
  • Results showed a significant difference in the occurrence of severe thrombocytopenia between patients with high and low GNRI scores (p=0.043).
  • Additionally, there was a notable difference in time to treatment failure (TTF) linked to nutritional status, indicating that GNRI could affect both side effects and treatment continuation (p=0.025).
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Purpose: Neuromelanin-sensitive MRI (NM-MRI) has proven useful for diagnosing Parkinson's disease (PD) by showing reduced signals in the substantia nigra (SN) and locus coeruleus (LC), but requires a long scan time. The aim of this study was to assess the image quality and diagnostic performance of NM-MRI with a shortened scan time using a denoising approach with deep learning-based reconstruction (dDLR).

Materials And Methods: We enrolled 22 healthy volunteers, 22 non-PD patients and 22 patients with PD who underwent NM-MRI, and performed manual ROI-based analysis.

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Background: Social skills training by human trainers is a well-established method of teaching appropriate social and communication skills and strengthening social self-efficacy. Specifically, human social skills training is a fundamental approach to teaching and learning the rules of social interaction. However, it is cost-ineffective and offers low accessibility, since the number of professional trainers is limited.

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Social skills training (SST), which is a rehabilitation program for improving daily interpersonal communication, has been used for more than 40 years. Although such training's demand is increasing, its accessibility is limited due to the lack of experienced trainers. To tackle this issue, automated SST systems have been studied for years.

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The superficial musculoaponeurotic system (SMAS) was advocated by Mitz and Peyronie in 1976. The concept of this superficial fascia was established by surgical findings of facelift surgery and is familiar to plastic surgeons and anatomists. However, detailed characteristics of this fascia are still not widely known among head and neck surgeons.

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Background The atrioventricular (AV) node is a relay station for electrical signals passing between the atria and ventricles. The artery supplying the AV node is functionally important, and its anatomical topography is relevant during invasive procedures. Therefore, the aim of this study was to identify and understand the variations of the origin of the AV nodal branch (AVNb) and its variations.

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A 23-year-old man presented with a fever, shaking chills, headaches, nausea, and a dry cough. Investigations showed lymphocytic leukocytosis with atypical lymphocytes in a blood smear. Liver function test results, D-dimer concentrations, and fibrin degradation product concentrations were greatly elevated.

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[F]-fluorodeoxyglucose (FDG) positron emission tomography (PET) is a well-established modality with high sensitivity for the diagnosis and staging of oncologic patients. FDG is taken up by the glucose transporter of the cell membrane and becomes trapped within the cell. In addition to malignant neoplasms, active inflammatory lesions and some kinds of benign tumors also accumulate FDG.

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