MRI parameters predict central lumbar spinal stenosis combined with redundant nerve roots: a prospective MRI study.

Background: To observe changes in the cauda equina nerve on lumbar MRI in patients with central lumbar spinal stenosis (LSS).

Methods: 878 patients diagnosed with LSS by clinical and MRI were divided into the redundant group (204 patients) and the nonredundant group (674 patients) according to the presence or absence of redundant nerve roots (RNRs). The anteroposterior diameter of the spinal canal (APDS) and the presence of multiple level stenosis, disc herniation, thickening of ligamentum flavum (LF) and increased epidural fat were assessed on MRI.

Differential Diagnosis of Hemophagocytic Syndrome by F-FDG PET/CT: A Meta-Analysis.

Hemophagocytic syndrome (HPS) is a rare disease in clinical practice, and there are often cases of delayed diagnosis. At present, researchers have applied F-FDG PET/CT in the differential diagnosis of HPS, but no consensus has been formed. Therefore, this study aims to systematically evaluate the application value of F-FDG PET/CT in the diagnosis of HPS patients.

CT Signs and Differential Diagnosis of Peripheral Lung Cancer and Inflammatory Pseudotumor: A Meta-Analysis.

We aimed to systematically evaluate the imaging features of peripheral lung cancer and inflammatory pseudotumor. PubMed, Embase, Cochrane Library, Chinese Knowledge Infrastructure (CNKI), Wanfang database (Wanfang), and Chinese Biomedical Network (CBM) were searched to collect relevant studies on CT image comparison of peripheral lung cancer and inflammatory pseudotumor. The search time was from database establishment to July 15, 2021.

[Optimization of tomato genetic transformation, kanamycin-resistant screening and seed selection].

Objective: To optimize the process of tomato genetic transformation, screening and seed selection using multiepitope antigenic gene (MAG) and truncated major surface antigen 1 (tSAG1) of Toxoplasma gondii as the target insert genes.

Methods: Tomato high-frequency regeneration system was optimized with different choices of media and explants. The genetic transformation procedure was optimized using different tomato cultivars, explants, culture temperatures, media and acetosyringone (AS) supplements.