Energy spectrum computed tomography multi-parameter imaging in preoperative assessment of vascular and neuroinvasive status in gastric cancer.

Background: Vascular and nerve infiltration are important indicators for the progression and prognosis of gastric cancer (GC), but traditional imaging methods have some limitations in preoperative evaluation. In recent years, energy spectrum computed tomography (CT) multiparameter imaging technology has been gradually applied in clinical practice because of its advantages in tissue contrast and lesion detail display.

Aim: To explore and analyze the value of multiparameter energy spectrum CT imaging in the preoperative assessment of vascular invasion (LVI) and nerve invasion (PNI) in GC patients.

[Research on the structure equation model of tendency on drug abuse and related influencing factors in middle school students].

Objective: To understand the relationship of tendency on drug abuse and related influencing factors for middle school students.

Methods: A total of 603 students were assessed with self-made copying style scale, consciousness to resistance of smoking, drinking and resistance ability through a questionnaire. A relationship model was set up by structure equation modeling.

[Impacts of combined supplementation with ascorbic acid and thiamine on certain biochemical and morphologic indexes of testes in mice treated by lead].

Objective: To investigate the impacts of the combined administration of ascorbic acid and thiamine on certain biochemical and morphologic indexes of testes in mice exposed to lead.

Method: s 75 male mice were divided into control groups, groups received with 0.2% lead acetate and groups treated by the same lead acetate dose in combination with ascorbic acid and thiamine (subdivided into:low, middle and high-dose) ad libitum with 15 mice in each.