Volume scanning is to check the volume of a container that can hold objects.
Question 2: What is volume scanning? Volume scanning is also called spiral scanning. As far as spiral scanning is concerned, it is a special term for CT examination. This is relative to tomography. When scanning, the bed will not move, and then move after scanning one floor. Different from spiral scanning, the bed and tube move at the same time during scanning, which constitutes a spatial spiral imaging mode. Do you understand?
Question 3: Medical imaging question: What does the volume data collected after volume scanning mean?
Question 4: What is spiral CT scanning? What's your name again? Spiral CT breaks through the design of traditional CT, adopts slip ring technology, and connects power cables and some signal lines with different metal rings in the fixed frame. X-ray tube and detector move with sliding brush and metal ring wire. The tube and detector are not limited by the length of the cable, and continuously rotate at a constant speed along the long axis of the human body. The scanning bed advances synchronously and uniformly (the traditional CT scanning bed is stationary during scanning), and the scanning trajectory spirals forward, thus completing the volume scanning quickly and continuously.
Classification of spiral ct
It is divided into single-slice spiral ct, double-slice spiral ct and multi-slice spiral ct.
Compared with conventional CT scanning, spiral CT scanning has the following advantages:
(1), hold your breath and scan the volume of the whole organ or a certain part, and there will be no omission of lesions.
② With the increase of scanning speed per unit time, motion artifacts are reduced, the utilization rate of contrast agent is improved, and the dosage of contrast agent is saved. It is reported that it can save about 50%.
(3) It can be reconstructed at will, with traceability, and there is no limit on the size of interlayer interval and the number of reconstructions.
④ Volume scanning improves the quality of multi-directional and three-dimensional reconstructed images.
Location of spiral ct examination:
Including brain, neck, chest (lung, mediastinum, chest wall and great vessels, pericardium), abdomen-epigastrium (liver, gallbladder, pancreas, spleen), retroperitoneal cavity, adrenal gland and kidney. Five senses (eye, ear-temporal bone, throat, nose, paranasal sinuses and temporomandibular joint), esophagus, gastrointestinal tract, pelvic cavity (bladder, uterus, fallopian tube, ovary, rectum, intestine B, vas deferens and prostate), spine, spinal cord, limbs and soft tissues, and ct intervention.
Question 5: What is a 3D horizontal volume scanner? This is the only innovative and mature technology that can be applied in the industrial field so far, and it can accurately detect solid matter and volume. Jakes mesoscopic 3D horizontal volume scanner is not affected by material types, physical and chemical properties, types and sizes of storage rooms, open-air warehouses or silos, and is suitable for harsh material storage environments. Jaxx vision 3D level volume scanner uses three signal transmitters to emit low-frequency pulses and receive pulse echoes from the surface of materials in silos, open-air warehouses or other level warehouses. By using three horn antennas, the equipment can monitor not only the time/distance of each echo, but also the direction of the echo. The digital signal processor of the equipment samples and analyzes the received signals, monitors the material level, volume and quality very accurately, and generates a three-dimensional image of the actual distribution of materials in the silo and displays it remotely.
It is displayed on the computer. Jaxx 3D level volume scanner, a unique product, can actually monitor all kinds of bulk solid materials stored in various silos, large open-air silos, solid material storage rooms, yards and warehouses, mark the level of materials in silos, draw irregular surface shapes randomly formed when the materials change at any time, calculate the actual volume of materials, and make the level of level monitoring reach a new height, thus providing solutions to problems that cannot be solved by current technology. Jacques can see that the low-frequency sound waves emitted by the 3D object-level volume scanning instrument can penetrate the suspended dust, unlike other technologies that have doubts when measuring in a very harsh environment. Acoustic signal contains patented self-cleaning function to prevent materials from adhering to the inner surface of new equipment, thus ensuring long-term reliable operation with extremely low maintenance in any harsh environment.
Question 6: What does plain scan of spiral CT mean? Spiral CT is a data acquisition method of CT (to put it bluntly, the gantry rotates continuously in one direction); Different from the early CT plain scan; Back plane scanning is a scanning method. Other scanning methods include (axial scanning, positioning scanning, dynamic scanning, spiral scanning, volume scanning, etc. )