145 results match your criteria: "Chinese Academy of Medical Sciences and Peking Union Medical College Hospital[Affiliation]"

Double-target self-supervised clustering with multi-feature fusion for medical question texts.

PeerJ Comput Sci

June 2024

Institute of Medical Information, Chinese Academy of Medical Sciences, Peking Union Medical College, Beijing, China.

Background: To make the question text represent more information and construct an end-to-end text clustering model, we propose a double-target self-supervised clustering with multi-feature fusion (MF-DSC) for texts which describe questions related to the medical field. Since medical question-and-answer data are unstructured texts and characterized by short characters and irregular language use, the features extracted by a single model cannot fully characterize the text content.

Methods: Firstly, word weights were obtained based on term frequency, and word vectors were generated according to lexical semantic information.

View Article and Find Full Text PDF

68Ga-FAPI and 18F-NaF PET/CT in psoriatic arthritis: a comparative study.

Rheumatology (Oxford)

November 2024

Department of Rheumatology and Clinical Immunology, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences & Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases (NCRC-DID), Key Laboratory of Rheumatology and Clinical Immunology, Ministry of Education, Beijing, China.

Objectives: As fibroblast-like synoviocyte activation and bone formation are associated with psoriatic arthritis (PsA), positron emission tomography (PET) using the tracers of 68Ga-fibroblast activation protein inhibitor (FAPI) and 18F-sodium fluoride (NaF) may sensitively detect the disease. In this prospective study, we aimed to evaluate the performance of 68Ga-FAPI PET/CT in PsA and to compare it with 18F-NaF PET/CT.

Methods: Sixteen participants (female 7/16, age 42.

View Article and Find Full Text PDF

U-Net and Its Variants Based Automatic Tracking of Radial Artery in Ultrasonic Short-Axis Views: A Pilot Study.

Diagnostics (Basel)

October 2024

Department of Biomedical Engineering, College of Chemistry and Life Science, Beijing University of Technology, Beijing 100124, China.

Radial artery tracking (RAT) in the short-axis view is a pivotal step for ultrasound-guided radial artery catheterization (RAC), which is widely employed in various clinical settings. To eliminate disparities and lay the foundations for automated procedures, a pilot study was conducted to explore the feasibility of U-Net and its variants in automatic RAT. Approved by the institutional ethics committee, patients as potential RAC candidates were enrolled, and the radial arteries were continuously scanned by B-mode ultrasonography.

View Article and Find Full Text PDF

Baseline F-FDG PET/CT may contribute to the determination of initial treatment strategy for newly diagnosed follicular lymphoma.

Eur J Radiol

September 2024

Department of Nuclear Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Wangfujing, Dongcheng District, Beijing 100730, China; Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine, Beijing, China; State Key Laboratory of Common Mechanism Research for Major Diseases, China. Electronic address:

Background: "Watch-and-wait" approach is an important management option in asymptomatic follicular lymphoma (FL) patients with low tumor burden. Since most FL lesions are FDG-avid, we wonder if F-FDG PET/CT at baseline can help to better choose the patients who can benefit from early chemotherapy. This study aimed to investigate the prognostic value of baseline F-FDG PET/CT in newly diagnosed FL patients treated with either watch-and-wait approach or chemotherapy.

View Article and Find Full Text PDF

We reported imaging findings with a peculiar tau accumulation pattern in a 56 year-old woman with frontotemporal dementia caused by Q351R mutation in the microtubule-associated protein tau ( MAPT ) gene. She had a 10-year history of gradually worsening memory loss. 18 F-FDG PET demonstrated hypometabolism in medial temporal lobes, but 18 F-florbetapir PET manifested no abnormal amyloid beta deposition, which ruled out Alzheimer disease.

View Article and Find Full Text PDF

Introduction: It is important to distinguish Waldenström macroglobulinemia from smoldering Waldenström macroglobulinemia (sWM), because only patients with Waldenström macroglobulinemia require treatment, however the distinction can be clinically complex. The aim of this study is to investigate whether [ 68 Ga]Ga-pentixafor PET/CT shows different characteristics in sWM and Waldenström macroglobulinemia patients and therefore can help to differentiate Waldenström macroglobulinemia and sWM.

Results: Thirty-seven patients with newly diagnosed Waldenström macroglobulinemia and 11 sWM patients were analyzed [35 men and 13 women; 64.

View Article and Find Full Text PDF

Background: Eosinophilic gastroenteritis (EGE) is a chronic recurrent disease with abnormal eosinophilic infiltration in the gastrointestinal tract. Glucocorticoids remain the most common treatment method. However, disease relapse and glucocorticoid dependence remain notable problems.

View Article and Find Full Text PDF

[ Ga]Ga-FAPI-04 PET/CT may be a predictor for early treatment response in rheumatoid arthritis.

EJNMMI Res

January 2024

Department of Rheumatology and Clinical Immunology, National Clinical Research Center for Dermatologic and Immunologic Diseases, the Ministry of Education Key Laboratory, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing, China.

Background: The identification of biomarkers predicting the treatment response of rheumatoid arthritis (RA) is important. [ Ga]Ga-FAPI-04 showed markedly increased uptake in the joints of patients with RA. The purpose of this study is to investigate whether [ Ga]Ga-FAPI-04 PET/CT can be a predictor of treatment response in RA.

View Article and Find Full Text PDF

Aims: To identify studies and the content of the interventions that have facilitated the implementation of pressure injury (PI) prevention measures in nursing home settings.

Design And Method: A scoping review methodology was employed. The author has carried out the following steps successively: Identified this scoping review's questions, retrieved potentially relevant studies, selected relevant studies, charted the data, summarised the results, and consulted with stakeholders from nursing homes in China.

View Article and Find Full Text PDF

Intelligent Size-Switchable Iron Carbide-Based Nanocapsules with Cascade Delivery Capacity for Hyperthermia-Enhanced Deep Tumor Ferroptosis.

Adv Mater

March 2024

Beijing Key Laboratory for Magnetoelectric Materials and Devices (BKL-MMD), School of Materials Science and Engineering, Peking University, Beijing, 100871, China.

The ferroptosis pathway is recognized as an essential strategy for tumor treatment. However, killing tumor cells in deep tumor regions with ferroptosis agents is still challenging because of distinct size requirements for intratumoral accumulation and deep tumor penetration. Herein, intelligent nanocapsules with size-switchable capability that responds to acid/hyperthermia stimulation to achieve deep tumor ferroptosis are developed.

View Article and Find Full Text PDF

MicroRNAs and their regulators: Potential therapeutic targets in pulmonary arterial hypertension.

Vascul Pharmacol

December 2023

Department of Cardiology, State Key Laboratory of Complex, Severe and Rare Diseases, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, Beijing 100730, China. Electronic address:

Pulmonary arterial hypertension (PAH) is a complex and progressive disease characterized by pulmonary arterial remodeling. Despite that current combination therapy has shown improvement in morbidity and mortality, a better deciphering of the underlying pathological mechanisms and novel therapeutic targets is urgently needed to combat PAH. MicroRNA, the critical element in post-transcription mechanisms, mediates cellular functions mainly by tuning downstream target gene expression.

View Article and Find Full Text PDF
Article Synopsis
  • - A 23-year-old man has been diagnosed with Langerhans cell histiocytosis (LCH), a rare disorder that affects the body's immune system.
  • - Imaging through 68 Ga-FAPI PET/CT revealed multiple lesions in his bones, indicating significant bone damage caused by LCH, along with some concerning areas near the heart and lungs.
  • - The findings suggest that 68 Ga-FAPI PET/CT could be a useful tool for assessing the extent and severity of LCH in patients.
View Article and Find Full Text PDF

A 63-year-old man with a history of right plantar malignant melanoma (T3bN0M0, IIb) developed multiple metastases in bilateral lungs 19 months after surgery. Subsequent F-FDG PET/CT revealed multiple pulmonary metastases with intense FDG uptake and detected a hypermetabolic lesion in the lateral wall of the left ventricle, which was considered to be a cardiac metastasis of malignant melanoma. This lesion was later confirmed in the dynamic myocardial perfusion MR.

View Article and Find Full Text PDF

Introduction: Endotracheal intubation (ETI) is a crucial but risky procedure, especially among patients suspected of difficult endotracheal intubation (DTI). Bronchoscope, as an improved technique commonly used in DTI, might encounter visualisation difficulties. The magnetic point-of-care ultrasound (MGPOCUS) provides a novel visualisation from the outside and enables estimation of the relative position and trajectory of the bronchoscope.

View Article and Find Full Text PDF

Slow Mohs micrographic surgery for nail apparatus melanoma in situ.

Int J Dermatol

September 2023

Department of Dermatology, State Key Laboratory of Complex Severe and Rare Diseases, Peking Union Medical College Hospital, Chinese Academy of Medical Science and Peking Union Medical College, National Clinical Research Center for Dermatologic and Immunologic Diseases, Beijing, China.

Background: Nail apparatus melanoma is a malignant tumor with a high incidence in Chinese melanoma patients. Slow Mohs micrographic surgery is an emerging technique for treating nail apparatus melanoma in situ (NAMIS).

Objective: This study evaluated the efficacy and safety of slow Mohs micrographic surgery for treating NAMIS.

View Article and Find Full Text PDF

Surgical management of pituitary adenoma during pregnancy.

World J Clin Cases

April 2023

Department of Neurosurgery, Key Laboratory of Endocrinology of Ministry of Health, China Pituitary Adenoma Specialist Council, Peking Union Medical College Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing 100730, China.

Background: Although conservative treatment is typically recommended for pregnant patients with pituitary adenoma (PA), surgical treatment is occasionally necessary for those with acute symptoms. Currently, surgical interventions utilized among these patients is poorly studied.

Aim: To evaluate the surgical indications, timing, perioperative precautions and postoperative complications of PAs during pregnancy and to provide comprehensive guidance.

View Article and Find Full Text PDF

A 63-year-old man presenting with peripheral neuropathies was diagnosed of Waldenström's macroglobulinemia, and Bing-Neel syndrome was subsequently confirmed via cerebrospinal fluid examinations. Besides involvement in bone marrow, lymph nodes, as well as the thoracic and sacral nerve root, Ga-Pentixafor PET/CT detected active tracer uptake in bilateral choroid plexus, which was negative in F-FDG PET/CT, possibly suggesting the involvement of Bing-Neel syndrome. The coexisting pituitary macroadenoma was FDG-avid but negative in Ga-Pentixafor PET/CT.

View Article and Find Full Text PDF

Radiomics model and clinical scale for the preoperative diagnosis of silent corticotroph adenomas.

J Endocrinol Invest

September 2023

Department of Neurosurgery, Chinese Academy of Medical Sciences and Peking Union Medical College, Peking Union Medical College Hospital, No. 1 Shuai Fu Yuan, Dongcheng District, Beijing, 100730, China.

Objective: Silent corticotroph adenomas (SCAs) are a subtype of nonfunctioning pituitary adenomas that exhibit more aggressive behavior. However, rapid and accurate preoperative diagnostic methods are currently lacking.

Design: The purpose of this study was to examine the differences between SCA and non-SCA features and to establish radiomics models and a clinical scale for rapid and accurate prediction.

View Article and Find Full Text PDF

Aims: To effectively deliver small interfering RNA (siRNA) to inflammatory tissues for treating rheumatoid arthritis (RA), we developed the multifunctional microbubbles (MBs) to perform photoacoustic/ultrasound-guided gene silencing.

Methods: Fluorescein amidite (FAM)-labelled tumour necrosis factor-α (TNF-α)-siRNA and cationic MBs were mixed to fabricate FAM-TNF-α-siRNA-cMBs. The cell transfection efficacy of FAM-TNF-α-siRNA-cMBs was evaluated in vitro on RAW264.

View Article and Find Full Text PDF

Objectives: Rosai-Dorfman disease (RDD) is a rare non-Langerhans cell histiocytic proliferative disorder. We performed a retrospective study to characterize the clinical and [F]FDG PET/CT features of RDD.

Methods: We retrospectively recruited 38 RDD patients with [F]FDG PET/CT scan in our center.

View Article and Find Full Text PDF

Individualized pharmaceutical care, which consists of therapeutic drug monitoring (TDM), pharmacogenetic (PGx) testing and pharmacist-managed clinic (PMC), is one of the most important trends in clinical pharmacy development in the future. While relevant studies in China were primarily single-center or regional. This study aims to explore the current status of individualized pharmaceutical care in China, find out the existing problems and provide references for its further development.

View Article and Find Full Text PDF

Two patients with a history of multiple myeloma experienced a recurrence of the disease.F-FDG PET/CT revealed prominent extramedullary disease as well as multi-foci in the bone marrow, both with increased FDG uptake. However, on Ga-Pentixafor PET/CT, all the myeloma lesions showed significantly lower tracer uptake in comparison with F-FDG PET.

View Article and Find Full Text PDF

Prominent 68 Ga-FAPI Uptake in Renal Parenchyma Caused by Immunoglobulin G4-Related Nephropathy.

Clin Nucl Med

May 2023

From the Department of Nuclear Medicine, Chinese Academy of Medical Sciences and Peking Union Medical College Hospital, Beijing Key Laboratory of Molecular Targeted Diagnosis and Therapy in Nuclear Medicine, Beijing, People's Republic of China.

A 57-year-old man presented with a dry cough and renal insufficiency. Serum immunoglobulin G4 (IgG4) level was markedly elevated, and IgG4-related disease was clinically considered. 18 F-FDG PET/CT revealed mild uptake in salivary glands and also moderately increased activity in renal parenchyma and prostate.

View Article and Find Full Text PDF

(1) Background: Topical non-steroidal anti-inflammatory drugs (NSAIDs) are one of the primary drugs for treating musculoskeletal pain. However, there are currently no evidence-based recommendations about drug selection, drug administration, drug interactions, and use in special populations or other pharmacology-related content of such medications. To this end, the Chinese Pharmaceutical Association Hospital Pharmacy Professional Committee developed multidisciplinary guidelines on using topical NSAIDs to treat musculoskeletal pain.

View Article and Find Full Text PDF