CT Simulator Vs. CT Scanner, What is the difference?

What is CT Scanner?

CT scan stands for computerized tomography. A CT scanner combines different X-ray images that are taken from different angles. A computer processing program creates cross-sectional images of various body parts. CT scan technology can create cross-sectional images of soft tissues, blood vessels, and bones. CT scanners are better than standard X-rays since they provide detailed information about different body parts. One of the most popular uses of CT scans is that they are used to assess the internal injuries that might result from an accident or trauma. 

How does the CT Scanner work?

A conventional X-ray uses a fixed X-ray tube to produce its results. As compared to that, a CT scanner uses a motorized X-ray source. This motorized X-ray source rotates around the gantry, which is a circular opening. The individual undergoing a CT scan is asked to lie on a bed that moves gradually through the gantry. The X-ray tube rotates slowly around the patient. As this happens, it shoots narrow beams of X-ray through the body. One unique feature of CT scanners is that they use digital X-ray detectors rather than films. These detectors are located on the opposite side of the X-ray source. X-rays reflected from a patient's body are picked up by the sensors and then fed to a computer. A 2-D image is constructed once the X-ray source completes its one rotation. This 2-D image is created using computational formulas. Once one image slice is completed, the idea is stored. The motorized bed on which the patient is lying is then moved to the gantry. The X-ray scanning process is repeated, it is repeated until that point when the number of desired image slices is accomplished and collected. It is possible to display these image slices either individually or collectively. Creating a 3D image of the physical area under examination helps doctors find the tough spot easily.

Applications of CT Scanner?

There are many applications for a CT scanner. In this brief section, we highlight some of the most common reasons that necessitate a CT Scan. Of course, this isn't an exhaustive list of applications for CT scanners by any means. However, it gives an excellent overview of the apparatus's utility. 

1- A doctor may recommend a CT scan to diagnose certain muscular and skeletal disorders. Examples of such conditions include bone tumors and fractures.

2- Pinpointing a tumor's application becomes a lot easier if a CT Scan is performed. The same benefit can be obtained if CT scan technology is used for determining the location of an infection or blood clot.

3- Detection and monitoring of diseases like cancer, pulmonary disorders, and hepatic issues are also possible via CT scans. 

4- It is not only about monitoring diseases like cancer, but CT scans are also an effective tool to monitor the treatment of these diseases. 

5- And, of course, as mentioned earlier, CT scans are one of the best ways to evaluate the damage to bones and soft tissues after an accident. 

What is CT Simulator?

CT simulation is a process performed to determine a tumor's exact location, size, and shape. The key objective behind CT simulation is to assist the radiotherapy performing team in their treatment planning. But what is a CT simulator? Well, it consists of a CT scanner, a flat tabletop, laser positioning,, and a marking system. Not only that, but there are also virtual simulation software and various hardcopy output devices. 

An important question: how does a CT simulator work? Well, the CT simulator transmits X-rays through tissues. It can create a contrasting display of tumorous and normal tissues. The CT simulator is connected to a high-speed computer. The radiotherapist can understand the difference between healthy and cancerous tissues by seeing images on this computer. Optimal and customized treatment plans can be made to treat a patient suffering from cancer. 

Three phases of a CT Simulation Procedure

The three phases of a CT simulation procedure are as follows:

1- Creation of an Immobilization Device 

One of the critical requirements of radiation treatment is that the patient must remain still during the treatment. Hence, creating an immobilization device is extremely important for the sake of this treatment. Doing this allows radiologists to target the tumors in an exact manner. These immobilization devices are custom-made. Hence, they are suitable for any patient and cover the head, neck, and pelvic floor regions.

2- CT Scans 

Once the patient suffering from an oncological disorder is positioned, tumor images are taken. CT simulation procedure is carried out in a linear dimension.

3- Targeting Marks 

The radiation beam is localized; this objective is achieved by placing marks on the patient's body. It is pertinent to mention that these marks are not permanent. However, these marks stay on a patient's body throughout radiation therapy.

Types of CT simulator

There are two types of CT simulators that are worth discussing in the scope of this discussion. These are conventional/spiral CT and Multi-slice scanners CT. In the first time of CT simulation, data acquisition is singular. This means that the machine acquires data in one slice at one time. On the other hand, Multi-slice scanners CT can receive data from multiple slices simultaneously. Critical components of a CT simulator include an X-ray tube, collimator/attenuator, patient support table, computer workstation, and positioning lasers.

The Multi-slice CT machines offer a variety of options. There are 4,6,8,16,32, 40 and 64-slice CT machines available. The 2,4,6,8 slice CT machines are capable of doing a whole-body scan. Fast scanning and excellent image quality are their characteristic features. The 16-slice CT machines are an ideal choice for anyone looking to perform a full organ scan with high-resolution imaging. However, these images are not good for performing cardiac analysis. For example, such CT machines are not recommended for coronary vessel analysis. For shorter examinations, 32-slice CT machines are a better option.

On the other hand, for understanding cardiac complications, 64-slice CT machines are considered to be the very best. Featuring improved CT angiography, these machines allow physicians to monitor heart contraction and plaque formation from a close angle. Which device will be used? The answer to this question depends on multiple factors. These factors include the patient's condition, availability of the CT simulator in a hospital, and suitability.

Quality Assurance of CT Simulators

Quality assurance is one of the most essential prerequisites of the modern world's medical and industrial realms. Not ascertaining quality is putting the lives of patients, staff, and the public at tremendous risk. CT simulators must be adequately evaluated to ensure that the equipment and program work properly. This section of the brief discusses the quality assurance of CT simulators. 

First, let us talk about the tests that can help experts ensure the quality of CT simulators. What credentials do they want to put to the test, you know? The testing tolerance limit is the first thing. Test specifications include test frequency, corrective actions, and quality assurance assignments. 

What are the components of quality assurance of CT simulators? These include CT dosimetry, reviewing exposure limits, evaluation of image quality, and evaluation of electromechanical components. The assessment of electromechanical components includes table indexing, X-ray generation, and localizing laser accuracy. As for the evaluation of image quality, features such as contrast, spatial integrity, and slice thickness are vital considerations. 

What is the difference between a CT scanner and CT Simulator?

So, at this point, all that is left to explain in this brief is the difference between a CT scanner and a CT simulator. Well, these terms are used interchangeably. CT simulator is the term used for both procedure and machine. Here, we are mainly talking about a Computed Tomography scanner that can take tumor images, helping radiologists target the tumor. CT simulators have precise dimensions, for example, the large bore, i.e., 80 cm or more.

Conclusion

The medical world is witnessing new heights of innovation daily. The technology behind medical instruments, devices, and apparatuses is being updated regularly, making these machines more and more effective. Regarding CT scanners and CT stimulators, there is a stunning range of products available in the market right now. If you are shopping for CT scanners and CT stimulators, we strongly recommend you visit Medwish.com.Medwish.com is an ideal option for many healthcare facilities that wish to install the best CT scanners and simulators, not only because of its numerous options but because of its convenience and quality of service. So, if you're a healthcare facilitator who needs to buy the necessary equipment for their hospital, Medwish is your wish to come true! As you will discover later, CT scanners and simulators are not Medwish's only area of expertise!