Publications by authors named "Wei-Hsin Yuan"

Objective: The aim of the study was to evaluate cerebral hemorrhage (CH) and contrast media leakage (CML or commonly synonymous with "contrast staining") differentiation on flat-panel volume computed tomography (FPVCT) after intra-arterial mechanical thrombectomy.

Methods: We evaluated patients with hyperattenuation on FPVCT after intra-arterial mechanical thrombectomy between 2018 and 2021 by multiple parameters on CT angiography, FPVCT, CT, and/or magnetic resonance imaging.

Results: The CH (n = 43) versus CML (n = 24) groups revealed: (1) regional anatomical characteristics (preserved and distorted): 7 of 43 (9.

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Severe extracranial carotid stenosis (SECS) patients may present with nonspecific neurological symptoms that require intracranial magnetic resonance imaging (MRI) and time-of-flight (TOF)-MR angiography (MRA) to exclude intracranial pathology. Recognition of SECS on intracranial TOF-MRA findings is beneficial to provide a prompt carotid imaging study and aggressive stroke prevention. Patients with SECS (January 2016 to May 2019) undergoing percutaneous transluminal angioplasty and stenting (PTAS) were included.

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Background: Benign immunoglobulin G4 (IgG4)-related orbital disease (IgG4-ROD)-characterized as tumors mimicking malignant orbital lymphoma (OL)-responds well to steroids, instead of chemotherapy, radiotherapy and/or surgery of OL. The objective of this study was to report the differences in computed tomography (CT) features and- serum IgG4 levels of IgG4-ROD and OL.

Methods: This study retrieved records for patients with OL and IgG4-ROD from a pathology database during an eight-year-and-five-month period.

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Background: Mammography is not effective in detecting breast cancer in dense breasts.

Methods: A search in Medline, Cochrane, EMBASE and Google Scholar databases was conducted from January 1, 1980 to April 10, 2019 to identify women with dense breasts screened by mammography (M) and/or ultrasound (US). Meta-analysis was performed using the random-effect model.

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Objective: Primary hepatic angiosarcoma (PHA) is extremely rare and most patients die within 12 months of diagnosis. The object of the study is to determine the association of initial clinical-radiological features and staging with outcomes in patients with PHA.

Methods: The medical records of adult patients with PHA were retrieved from an electronic medical record database and a pathology database and retrospectively reviewed.

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Objective: The purpose of this study was to determine clinical and ultrasonographic characteristics of male breast tumors.

Methods: The medical records of male patients with breast lesions were retrieved from an electronic medical record database and a pathology database and retrospectively reviewed. A total of 112 men (125 breast masses) with preoperative breast ultrasonography (US) were included (median age, 59.

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Objective: Although the majority of available evidence suggests that vertebroplasty and kyphoplasty can relieve pain associated with vertebral compression fractures (VCFs) and improve function, some studies have suggested results are similar to those of placebo. The purpose of this meta-analysis was to compare the outcomes of vertebroplasty and kyphoplasty with conservative treatment in patients with osteoporotic VCFs.

Methods: Medline, Cochrane, and Embase databases were searched until January 31, 2015 using the keywords: vertebroplasty, kyphoplasty, compression fracture, osteoporotic, and osteoporosis.

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Article Synopsis
  • - Granular cell tumors are uncommon and represent only 3% of all granular cell tumor cases in the orbit, making diagnosis challenging for medical professionals.
  • - A case of a 37-year-old Chinese woman showed symptoms like double vision, bulging eyes, and limited eye movement due to an intraocular granular cell tumor, which imaging initially suggested was an orbital hemangioma.
  • - Post-surgery pathology confirmed the diagnosis of a granular cell tumor, emphasizing that T2 hypointensity and unrestricted water diffusion in MRI should prompt consideration of this tumor type when evaluating intraocular masses.
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Article Synopsis
  • The study focused on the effectiveness of thoracic high-resolution computed tomography (HRCT) to assess the severity of Pneumocystis jirovecii pneumonia (PJP) in non-AIDS immunocompromised patients.
  • Researchers measured mean lung attenuation (MLA) and extent of increased attenuation (EIA) in 40 patients, finding a strong correlation between MLA and EIA, as well as with clinical severity indicators like the PaO2/FiO2 ratio and APACHE II scores.
  • While MLA and EIA showed promise in evaluating the severity of PJP, they had limited capacity to predict survival outcomes among patients.
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Introduction: We report a case of a 54-year-old male patient with a hard, painful nodule within his right breast which was misdiagnosed preoperatively as breast cancer.

Case Description: Preoperative work-up included physical examination, non-contrast chest computed tomography (CT), sonography, and sono-guided breast biopsy. Isolated breast panniculitis with vasculitis (BPWV), a rare disease, was diagnosed by histopathologic examination of tissue obtained from excisional biopsy.

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Lupus mesenteric enteritis is an uncommon condition in systemic lupus erythematosus (SLE) patients with acute abdominal pain. We describe a 28-year-old woman with a 3-day history of watery diarrhea and intermittent vomiting. Abdominal ultrasonography revealed thickening of the intestinal wall and edema with the lumen filled with fluid in this patient with nonspecific symptoms.

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Background: Computed tomography (CT) is known to be the first-line imaging method for patients with or suspect to have intraocular foreign bodies (IOFBs). The purpose of this study is to evaluate clinical outcomes in the management of IOFBs with the aid of CT.

Methods: Retrospective chart review of patients who received orbital CT prior to the removal of an IOFB between January 2000 and December 2010 was carried out.

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Objective: The objective of our study was to evaluate the CT characteristics of globe rupture.

Materials And Methods: The medical records of patients seen in the emergency department with blunt, penetrating, or explosive orbit injury were retrospectively reviewed. A total of 75 patients (76 injured globes) were included (56 males and 19 females; average age, 45.

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Background: Multiple sclerosis (MS) is less common in Asia, including Taiwan, and some characteristics of MS in Asians differ from those of Caucasians. Tumefactive brain lesion is even rarer in MS patients.

Objective: To review patients with tumefactive MS and compare them with those in other studies investigating tumefactive demyelinating lesions and our Taiwanese typical MS patients.

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Article Synopsis
  • The study aimed to compare the sonographic features of ruptured versus unruptured epidermal cysts using 46 patients—20 with ruptured cysts and 26 with unruptured ones.
  • The analysis focused on shape, boundaries, vascularity, and other characteristics seen in sonography, revealing that unruptured cysts are often oval with clear boundaries, while ruptured ones are lobulated and have less-defined boundaries.
  • The research concluded that recognizing these sonographic differences can aid in distinguishing between ruptured and unruptured epidermal cysts, highlighting distinct pathologic features associated with ruptured cases.
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Three consensus 3D-QSAR (c-3D-QSAR) models were built for 38, 34, and 78 inhibitors of β-secretase, histone deacetylase, and farnesyltransferase, respectively. To build an individual 3D-QSAR model, the structures of an inhibitor series are aligned through docking of a protein receptor into the active site using the program GOLD. CoMFA, CoMSIA, and Catalyst are then performed for the training set of each structurally aligned inhibitor series to obtain a 3D-QSAR model.

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Background: The protein structures of the disease-associated proteins are important for proceeding with the structure-based drug design to against a particular disease. Up until now, proteins structures are usually searched through a PDB id or some sequence information. However, in the HDAPD database presented here the protein structure of a disease-associated protein can be directly searched through the associated disease name keyed in.

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Unlabelled: Our aim was to assess the specific ultrasonic characteristics of pleomorphic adenoma and Warthin's tumor in major salivary glands.

Methods: We retrospectively reviewed and analyzed the ultrasonographic (US) features of 19 pleomorphic adenomas in 16 patients and 29 Warthin's tumors in 20 patients. The features included tumor size, echotexture, boundary, and shape on gray-scale US imaging and grading and distribution of tumor vascularity on color Doppler ultrasound (CDU).

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We evaluated the detectability of painful vertebral compression fractures (VCFs) on different MRI protocols in 40 osteoporotic patients with thoraco-lumbar osteoporotic vertebral fractures. Five hundred and ten thoracic and lumbar vertebrae in 40 patients were evaluated. All patients underwent percutaneous vertebroplasty.

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Torticollis due to atlantoaxial rotatory fixation (AARF) is rare. Most cases are idiopathic or occur after infection or minor trauma. AARF can cause neurologic deficits, and patients often present with torticollis that fails to resolve.

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Several three-dimensional quantitative structure-activity relationship (3D-QSAR) models have been constructed using the comparative molecular field analysis (CoMFA), comparative molecular similarity indices analysis (CoMSIA), and catalyst pharmacophore feature building programs for a series of 26 truncated ketoacid inhibitors designed particularly for exploring the P2 and P3 binding pockets of HCV NS3 protease. The structures of these inhibitors were built from a structure template extracted from the crystal structure of HCV NS3 protease. The structures were aligned through docking each inhibitor into the NS3 active site using program GOLD.

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Unlabelled: The purpose of this study is to assess the specific ultrasonic characteristics of papillary thyroid carcinoma and to determine the relative frequency of various patterns of papillary carcinoma on gray-scale ultrasonography (US) and color Doppler ultrasonography (CDU).

Methods: We retrospectively reviewed US features in 51 patients with confirmed papillary thyroid carcinoma. The features were analyzed based on tumor size, echogenicity, echotexture, boundary, margin, shape, and calcification pattern on gray-scale US imaging, and on patterns of vascularity on CDU.

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We reviewed the follow-up findings of patients who received percutaneous vertebroplasty, in order to understand the effects of vertebroplasty on following issues: pain relief, height restoration, wedge deformity correction, kyphosis correction, and other radiological findings found in follow up studies, such as new fractures. Generally, the pain relieving effect after vertebroplasty is long lasting except when new fracture occurred, or presence of other problems that caused the back pain. Height restoration and wedge deformity correction last for more than one year.

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