Negative / Null Result ReportOpen accessMedicine
Kennedy J, Cooley SA, Roman Fox J et al. · 2026 · The Journal of infectious diseases
Background As persons with human immunodeficiency virus (PWH) live longer, interactions between human immunodeficiency virus (HIV), aging, and structural brain integrity become increasingly vital for understanding cognitive disorders. This…
View details →DOI: 10.1093/infdis/jiag029 Negative / Null Result ReportOpen accessMedicine
Willems R, Cappelletti M, Schüre JR et al. · 2026 · Scientific reports
Messenger ribonucleic acid (mRNA)-based vaccines delivered via lipid nanoparticles (LNP) were pivotal in managing the severe acute respiratory syndrome coronavirus (SARS-CoV-2) pandemic. While mild systemic reactions are common after…
View details →DOI: 10.1038/s41598-026-56181-6 Negative / Null Result ReportOpen accessMedicine
Iribarren A, Obrutu O, Maughan J et al. · 2026 · American heart journal plus : cardiology research and practice
Background Caffeine, a nonselective adenosine A2 receptor antagonist, blunts adenosine-induced coronary hyperemia. Despite recommended abstinence before adenosine stress cardiac magnetic resonance imaging (CMRi), residual caffeine may…
View details →DOI: 10.1016/j.ahjo.2025.100709 Negative / Null Result Report
Pisani M, Marcheschi P, Clemente A et al. · 2026 · Preprint
Aortic calcification represents a key marker of cardiovascular disease, detectable through medical imaging. This research investigates the use of artificial intelligence (AI) to assist radiologists in identifying aortic calcification in…
View details →DOI: 10.12688/openreseurope.21896.1 Negative / Null Result ReportMedicine
Ware A, LaMountain J, White RC et al. · 2026 · Nature communications
The electromagnetic response of materials serves as the foundation for a broad range of vital applications, from imaging, to sensing, to classical and quantum communications. Here we demonstrate, theoretically and experimentally, a…
View details →DOI: 10.1038/s41467-026-74396-z Negative / Null Result ReportOpen accessMedicine
Vockert KL, Winter N, Kirschmann FS et al. · 2026 · Neurological research and practice
Background and aims Hereditary polyneuropathies are rare heterogeneous neurological disorders that cause progressive muscle weakness and disability. As new therapies emerge, sensitive imaging biomarkers to monitor disease progression are…
View details →DOI: 10.1186/s42466-026-00508-1 Negative / Null Result Report
Sezen E, Kurtulmus H · 2026 · Preprint
Abstract Background To compare the time-dependent retentive-force behavior and wear-related surface alterations of two unsplinted overdenture attachment systems, a ball attachment system and a TRI Raptor Smart Box system, after…
View details →DOI: 10.21203/rs.3.rs-9463831/v1 Negative / Null Result ReportMedicine
Vencato AA, Juchem ALM, Clerici NJ et al. · 2026 · International journal of biological macromolecules
This study produced six formulations using polyvinyl alcohol (PVA) blended with gelatin or gelatin-starch, incorporating cinnamon powder (CP) or cinnamon essential oil (CEO). Homogeneous nanofibers with diameters ranging from 367 to 532 nm…
View details →DOI: 10.1016/j.ijbiomac.2026.153149 Negative / Null Result ReportMedicine
Doğan D, Öksüz C, Çakır Ö et al. · 2026 · Biomedicines
Background/Objectives: Differentiating mediastinal lymphadenopathy associated with lung cancer from sarcoidosis remains a clinical challenge because of overlapping imaging findings. This study evaluated whether CT-derived radiomic…
View details →DOI: 10.3390/biomedicines14061327 Negative / Null Result ReportMedicine
Liu Y, Tao G, Zhao Y et al. · 2026 · Frontiers in medicine
Objective To characterize choroidal structural and perfusion changes in children with emmetropia, low myopia, and moderate myopia using enhanced depth imaging optical coherence tomography (EDI-OCT) and optical coherence tomography…
View details →DOI: 10.3389/fmed.2026.1861658 Negative / Null Result ReportMedicine
Qian MY, He LY, Lan P et al. · 2026 · International journal of infectious diseases : IJID : official publication of the International Society for Infectious Diseases
This study aimed to identify predictors of outcomes and evaluate the therapeutic impact of surgical intervention in CM patients, with a specific focus on the growing HIV-negative population in East Asia. We conducted a single-center…
View details →DOI: 10.1016/j.ijid.2026.108923 Negative / Null Result ReportMedicine
Riehm A, Senicourt L, O'Shaughnessy E et al. · 2026 · Diagnostic and interventional imaging
Purpose The purpose of this study was to develop a machine learning-based algorithm based on a combination of magnetic resonance imaging (MRI) and color-Doppler ultrasound (CDUS) to characterize lacrimal gland lesions. Materials and…
View details →DOI: 10.1016/j.diii.2026.06.001 Negative / Null Result Report
Mitchell WJ, Schmidt H, Moughan E et al. · 2026 · Preprint
Continuous self-report during ongoing experience provides a high-resolution window into subjective processing, yet concerns that it may disrupt the neural and cognitive processes being measured have limited its use in neuroimaging. We…
View details →DOI: 10.31234/osf.io/rhd9u_v1 Negative / Null Result Report
Nguyen Van H, Vu Dang L, Nguyen The A et al. · 2026 · Preprint
Objectives: Histologic grade is an important prognostic factor in hepatocellular carcinoma (HCC). Gd-EOB-DTPA-enhanced MRI may provide noninvasive im-aging markers related to tumour differentiation. This study aimed to evaluate the…
View details →DOI: 10.20944/preprints202605.0460.v1 Negative / Null Result ReportMedicine
Ashouri R, Reynolds PS, Rajavel S et al. · 2026 · Urology
Objective To guide biopsy decision making via a predictive model for clinically significant prostate cancer (csPCa) in men with positive imaging (PI-RADS 3-5). We aim to elucidate the influence of zone on the predictive accuracy of PI-RADS…
View details →DOI: 10.1016/j.urology.2026.01.028 Negative / Null Result ReportMedicine
Shahzadi, Reimann, Schneider et al. · 2026 · RoFo : Fortschritte auf dem Gebiete der Rontgenstrahlen und der Nuklearmedizin
To retrospectively evaluate the diagnostic performance and confidence of photon-counting computed tomography (PCCT) for detecting bone marrow edema (BME) in trauma patients, using magnetic resonance imaging (MRI) as the reference standard.…
View details →DOI: 10.1055/a-2888-7989 Negative / Null Result ReportMedicine
Erden, Ağır, Kayaalp et al. · 2026 · Orthopaedic journal of sports medicine
Biological graft maturation after anterior cruciate ligament (ACL) reconstruction is a prolonged and heterogeneous process that may not directly correlate with clinical recovery. Magnetic resonance imaging (MRI)-based signal intensity…
View details →DOI: 10.1177/23259671261449148 Negative / Null Result ReportMedicine
Casseb, de Campos, Loos et al. · 2026 · Epilepsia
There are several clinical and research applications for determining the amount of brain tissue resected after epilepsy surgery; however, manual segmentation of postoperative magnetic resonance imaging (MRI) is imprecise and…
View details →DOI: 10.1002/epi.70296 Negative / Null Result ReportMedicine
Liu, Cui, Sun et al. · 2026 · Quantitative imaging in medicine and surgery
Preoperative evaluation of histopathological features and biomarkers is critical for personalized treatment of rectal adenocarcinoma. Amide proton transfer-weighted (APTw) magnetic resonance imaging (MRI) is a promising noninvasive…
View details →DOI: 10.21037/qims-2025-1-2596 Negative / Null Result ReportMedicine
Kohzai, Yamamoto, Matsushita et al. · 2026 · Diagnostics (Basel, Switzerland)
Objectives : Whereas irreversible compression of Digital Imaging and Communications in Medicine (DICOM) files can reduce data size, research on its impact on diagnostic ability when using artificial intelligence (AI) software is limited.…
View details →DOI: 10.3390/diagnostics16111637 Negative / Null Result ReportMedicine
Wang, Guo · 2026 · The Journal of craniofacial surgery
To investigate the growth and developmental characteristics of the temporomandibular joint (TMJ) in adolescents with facial asymmetry and its relationship with mandibular morphological changes. A total of 20 patients aged 8 to 20 years…
View details →DOI: 10.1097/scs.0000000000013021 Negative / Null Result ReportMedicine
de Pesters, Staali, Laval et al. · 2026 · Orthopaedic journal of sports medicine
Anterior cruciate ligament (ACL) reconstruction (ACLR) is increasingly performed in children and adolescents, yet mid- to long-term graft ligamentization remains poorly understood. To characterize the magnetic resonance imaging (MRI)…
View details →DOI: 10.1177/23259671261447204 Negative / Null Result ReportMedicine
Griffith, Hecht, Lux et al. · 2026 · Veterinary radiology & ultrasound : the official journal of the American College of Veterinary Radiology and the International Veterinary Radiology Association
In dogs with chylothorax that are refractory to medical management, surgical intervention is often recommended. Computed tomographic lymphangiography (CTL) is the most commonly used preoperative imaging study, but it has the disadvantages…
View details →DOI: 10.1111/vru.70198 Negative / Null Result ReportMedicine
Kaman, Stork, Okumus et al. · 2026 · Langenbeck's archives of surgery
Segmentectomy is offered in selected patients with clinical T1a-b N0 M0 lung cancer. In case of positive N1 lymph node at fresh frozen section, conversion to lobectomy is recommended. Indication for redo surgery and completion lobectomy in…
View details →DOI: 10.1007/s00423-026-04089-0 Negative / Null Result ReportMedicine
Larkin, Schiavon, Hajihassani · 2026 · Plant disease
In South Florida, the development and maintenance of high-quality golf courses are important to the state's economy. The courses, however, are commonly affected by plant-parasitic nematodes (PPNs), which are highly damaging. Effective…
View details →DOI: 10.1094/pdis-02-26-0363-re Negative / Null Result ReportMedicine
Linke, Mayer, Suttkus et al. · 2026 · Pediatric research
This study examined parental stress indicators during outpatient pediatric surgery and whether intraoperative text messaging could alleviate stress. This randomized trial assigned parents of children aged 6 months to 6 years undergoing…
View details →DOI: 10.1038/s41390-026-04816-9 Negative / Null Result ReportMedicine
Liu, Zhang, Yuan et al. · 2026 · Chemical science
Hexafluoropropylene oxide-dimer acid (HFPO-DA) is widely used in food packaging bags, surfactants, lubricants, etc. As a new substitute for the persistent organic pollutant perfluorooctanoic acid (PFOA), it has been proven to have…
View details →DOI: 10.1039/d5sc07089a Negative / Null Result ReportOpen accessDiseases of the circulatory (Cardiovascular) system
Zahra Ojaghi-Haghighi, Atoosa Mostafavi, Hassan Moladoust et al. · 2015 · Journal of Tehran University Heart Center
Background: Left ventricular (LV) twist is due to oppositely directed apical and basal rotation and has been proposed as a sensitive marker of LV function. We sought to assess the impact of chronic pure mitral regurgitation (MR) on the torsional mechanics of the left human ventricle using tissue Doppler imaging. Methods: Nineteen severe MR patients with a normal LV ejection fraction and 16 non-MR controls underwent conventional echocardiography and apical and basal short-axis color Doppler myocardial imaging (CDMI). LV rotation at the apical and basal short-axis levels was calculated from the
Negative / Null Result ReportOpen accessMedicine
Saumya Srivastava, Charu Eapen, Harramb Mittal · 2018 · Journal of Clinical and Diagnostic Research
Introduction: Shoulder Impingement Syndrome (SIS) is one of the common cause of shoulder ailment which leads to pain and restriction of the movements. Though Mobilisation with Movement and cryotherapy, both are found to be effective in managing SIS, there is no comparison done between the two treatments. Aim: To compare the effectiveness of Mobilisation With Movement (MWM) and cryotherapy in SIS. Materials and Methods: A randomised clinical trial was conducted on 22 subjects who aged between 18-64 years, and those who had a positive painful arc, three positive tests out of five i.e., Neer’s Im
View details →DOI: 10.7860/jcdr/2018/34624.12091 Negative / Null Result ReportOpen accessNeurology. Diseases of the nervous system
Bilge Kocer, Hayat Guven, Isik Conkbayir et al. · 2016 · Parkinson's Disease
Factors related with hyperhomocysteinemia (HHcy) and the impact of HHcy in Parkinson’s disease (PD) are not well understood. We investigated the factors associated with increased levels of homocysteine (Hcy) and the relationship between HHcy and motor symptoms, cognitive status, and vascular risk in patients with Parkinson’s disease. Among 60 patients (29 males, 48.3%) with PD, the stage of the disease, the severity of clinical symptoms, and the patients’ cognitive status were measured using a modified Hoehn and Yahr Staging Scale (mHY), Unified Parkinson’s Disease Rating Scale (UPDRS) II and
View details →DOI: 10.1155/2016/1589747 