204 results about "X ray examination" patented technology

An X-ray inspection system is mounted around conveyor (2). An X-ray source (12) and a number of X-ray detectors record X-ray images of an object (8) such as baggage moving along the conveyor. A visual recordal system (18,22) tracks the motion of the object along the conveyor to identify the location and orientation of the object as it moves along the conveyor. A tomosynthesis image of the object is calculated from the plurality of X-ray images using the location and orientation information from the visual recordal system.

The invention relates to a method for repairing a high-temperature alloy thin-walled cartridge receiver part through precision pulse welding. The method comprises the following steps: according to the length and position of the flaw of the thin-walled cartridge receiver part, analyzing the failure mode and the stress state of the part in combination with a numerical simulation technique; before welding, carrying out precision measurement on the front and rear mounting edges and other related sizes of a cartridge receiver; determining the position and size of the flaw by using X-ray examination and dyeing examination; carrying out pre-welding technical preparation; adopting a special welding protecting tool according to the position to be repaired; in combination with the failure mode and the stress state of the part, on account of the position and the size of the flaw, determining a single pulse or continuous pulse mode, welding technical parameters and welding order technical factors so as to reduce the stress level of the part after welding; and carrying out welding by a welding repairing technology determined in the above step. The method has the advantages that the weld joint performance reaches more than 90% of base metal performance, and standard requirements are met; and after welding, the radial run-out of the inner and outer mounting edges of the cartridge receiver is smaller than 0.08mm, the end surface run-out is smaller than 0.10mm, and assembling requirements are met.

The invention discloses a method for manufacturing a high-strength X90 steel grade spiral submerged arc welded pipe. The method comprises the following steps of: uncoiling; leveling; edge milling; pre-springing; forming; inside welding; outside welding; pipe end diameter expansion; layering and ultrasonic examination of a base material; X-ray examination of a welding seam; hydrostatic test; ultrasonic examination of the welding seam; and pipe end chamfering. By increasing the processes of double edge milling, edge pre-springing and pipe end diameter expansion in the processing steps, the manufacturing method successfully solves the technical problems of poor forming stability, the difficulty for the performance of the welded joint to meet the technical requirement and the like during the manufacturing of the high-strength X90 steel grade spiral submerged arc welded pipe.

A molded plastic spine board having specialized padding strategically located in the board and stiffing members. The specialized padding reduces patient discomfort and aids perfusion in the regions that are in contact with the board while the patient is immobilized on the board thereby helping to prevent tissue ischemia and pressure ulcer formation. The stiffening members strengthen the board eliminating deflection of the board thereby keeping the patient immobilized while eliminating artifacts (shadows and interference) in x-rays thereby ensuring good x-ray examination.

The invention relates to a combination device of detector and collimator for X-ray examination and a method. The combination device comprises a plurality of detectors, an arc supporting arm and a grid collimator, wherein the arc supporting arm is provided with a gap running through the inner side and the outer side along an arc direction; the grid collimator comprises a plurality of grids; the plurality of detectors are arranged at the outer side of the arc supporting arm along the arc direction; the grid collimator is arranged at the inner side of the arc supporting arm along the arc direction; and the corresponding detectors and the corresponding grids are aligned along a direction directing to the circle center of the arc supporting arm through the gap of the arc supporting arm. The combination device can improve the efficiency and the reliability of the grid collimator and can also solve the problem that detector modules cannot be disassembled and assembled independent of the gridcollimator.

The present invention provides a polyethylene glycol-electrolyte oral solution. Its is made up by using 59-60 g of polyethylene glycol, 1.0-1.5 g of sodium chloride, 0.5-1.0 g of potassium chloride, 1.5-2.0 g of sodium hydrogen carbonate, 5.5-6.0 g of sedium sulfate, 0.02-0.5 g of egtazide, 0.02-0.5 g of sweetener and 1-2 ml of edible essence, and adding deionized water to 1000 ml. It mainly is applicable to colonoscopy, barium enema X-ray examination and intestinal tract ablution, etc. and also can be used for curing chronic constipation.

An X-ray inspection apparatus includes a scanning X-ray source for emitting an X-ray, an X-ray detector drive unit having a plurality of X-ray detectors mounted thereon and being capable of independently driving the plurality of X-ray detectors, and an image acquisition control mechanism for controlling the X-ray detector drive unit and acquisition of image data from the X-ray detectors. The scanning X-ray source emits an X-ray by moving an X-ray focal point position of the X-ray source to each of originating point positions of X-ray emission, which are set for the X-ray detectors such that X-rays are transmitted through a plurality of prescribed inspection areas of an inspection object and enter the X-ray detectors. Image pickup by the X-ray detector and movement of another X-ray detector are concurrently performed in an alternate manner. The image acquisition control mechanism acquires image data, and an operation unit reconstructs an image.