Seeking medical help online has become a new way of doing things, but because doctors cannot examine the signs in person, sometimes there are some limitations, so patients should provide as much detailed and accurate information as possible. A clear and beautiful X-ray, CT, MRI film is very important for the doctor’s judgment, but patients often do not know how to take a CT or X-ray film because they do not have medical knowledge and professional photography skills.
【Simple and easy to use method】
1, the shooter to the computer monitor background to all white, brightest brightness.
2, the CT or X-ray film fixed to the front of the computer monitor, pay attention to the film on the English and digital direction is correct, the film will not be put in reverse.
3.Tune the digital camera to macro mode, do not shake your hand when shooting, do not turn on the flash, each photo can contain up to 4~6 CT cross-sectional images, try to take the whole film, the key instructions can be shot separately.
4, through the cell phone WeChat scan doctor QR code or home computer to upload the film to the website.
【Detailed Tips
I. Equipment requirements.
1, camera: mid- to high-end smart phones or 5 million pixels or more digital cameras are better, focus to the right, do not use the flash.
2, tripod: general enough to use, as long as you can support the camera, do not worry about shaking. If there is no tripod, with a stack of books or double forearms to support the camera, to ensure that the hand to be stable, once there is a shake, the photo effect is certainly not good.
3, the background lighting of the film.
A, computer LCD monitor: If the film is small, you can use the monitor for the background. Adjust to the brightest, the screen to white (this there will be no one?). .
Two ways: right-click on the desktop – a new blank word document – double-click to open, the left hand hold down the lower left Ctrl key, the right hand up to turn the mouse wheel, the desktop becomes white; click “Start” – “All Programs” – “Accessories” – “Accessories “Accessories” – “Notepad”, Notepad think we all know, open Notepad, maximize, the desktop will become white.
B. Window glass in the daytime (not installed security windows, otherwise there will be shadows left behind). You can fix the film being photographed with tape on a clean window glass (preferably without patterned hairy glass). The background outside the window glass should be cloudless sky without any scenery, there can not be such as buildings, trees, clouds and other backgrounds, and can not let the sun directly into the window glass, to prevent these background images through the window glass reflected in the shot, interfering with the shooting effect.
Second, the steps.
To declare a point, ordinary digital cameras if the operation of skilled can also achieve good results, of course, if the camera has more features, in accordance with the following way to shoot.
1, keep the room dark (the purpose is to reduce the reflection of the film indoor objects, the shooter and the camera body to cause interference). It is best to use a shade to cover the excess light from the viewing light or window glass when shooting. Be careful to keep the subject and the camera lens vertical, that is, the X-ray film should be shot very positive to do, do not shoot on your back, overhead shooting, not to mention oblique shooting. Generally use automatic exposure system, but the exposure mode should be set on the multi-point exposure or average metering, do not use point metering. The use of the lens is best in the focal length or telephoto end, less wide-angle, so as not to distort the picture.
2, tripod to support the camera so that the camera lens to the center of the film (if you have a good quality tripod, you can put the film vertically, while the camera vertically, but simple tripod camera vertically can not be well vertical). If you do not have a tripod, you should hold the camera with both hands when shooting and support your hands or elbows on a fixed support such as a table or chair, pay attention to hold your breath when pressing the shutter to prevent the image from shaking.
3, the film will be placed horizontally into the viewing light (if the width is not enough, you can put the viewing light down) (as to why the horizontal, the camera is normally shot wide > high, so placed can be used to incorporate the largest version of the picture data)
4, adjust the camera parameters: the resolution is set to the highest, turn off the flash, set the picture color to black and white (if there is this function). If you want a local close-up of the lesion then turn on macro.
5, so that the camera is about 1 meter away from the film, moderate stretching of the camera optical zoom to ensure that all images of the film into the framing range, if put to the maximum can not make the image full width, you can move closer to the camera. Note: Stretching the zoom can not reach the position of the digital zoom, most digital cameras zoom will show the separation line between the optical zoom and digital zoom on the screen. The purpose of doing so is to reduce the reflection of the camera body illuminated by the viewing light, and can reduce the aberration of the captured pictures, if the camera is open macro, close to the viewing light, so that the captured pictures are not square.
6, open the camera’s time-lapse function, lightly press the shutter to focus, and then press the bottom, leave the camera to avoid vibration, wait a few seconds for the camera to automatically complete shooting, CT, MRI and X-ray film shooting bone general exposure time 1/1500 seconds to 1/60. where the CT film bone window selected 1/400, MRI selected 1/250, CR film selected 1/600, ordinary X-ray film depending on the brightness. Focal length generally choose 2.8 or 3.5 can be.
7, test the shooting effect, if the quality of the picture taken is qualified, put on the camera screen to the maximum, you can read the text and other information on the film. Of course, it is best to import the photos into the computer and use the monitor to view the shooting effect.
This shooting can maximize the quality of the photos, and the picture consistency is very good, avoiding the blur caused by shaking, reducing the distortion of the photo, the actual operation can play a half-hearted effect.
Third, the advanced skills of shooting X-rays, CT and MRI.
Will shoot, but also know how the film is a good shot.
Advanced techniques for taking X-rays.
On the X-ray film, the patient’s name, X-ray number, examination date, examination hospital, left and right side and other Chinese characters or English numeric information are usually marked on the upper and lower ends and side of the X-ray film, so the whole X-ray film should be fully ingested when taking the X-ray film to clearly reflect all the information of the X-ray film. According to the information marked on the film, be careful not to put the film upside down.
The digital camera selects automatic shooting mode, portrait scene mode, flash disabled, image resolution 1280×960 (about 1.2 megapixels or 1.2M), and image quality selects fine mode. Adjust the shooting distance according to the size of the x-ray film, press the shutter halfway to focus automatically, and press the shutter fully to take a picture.
Advanced techniques for MRI and CT films.
The first step is to take the whole MRI and CT film in the same way as the X-ray film. The image resolution should be greater than 2272×1704 (about 4 megapixels or 4M), preferably 5 megapixels or 5M, so that the doctor can easily analyze each small image.
Then take each small image in the order from left to right and from top to bottom, noting that it should include information about the patient’s name, number, examination date, examination hospital, scan level and other Chinese characters or alphanumeric information marked on the top and bottom of each small film. As each small film image is small, the shooting distance is close, about 625px-50cm, when shooting must be enabled macro or super macro photography function to shoot clearly. Disable the flash, image resolution 800 × 600 (about 480,000 pixels or 0.5M, VGA), image quality select fine mode. Half press the shutter to focus automatically, fully press the shutter to take pictures.
Fourth, after shooting check
After shooting, be sure to play back all the images on the computer to see if the images contain all the labeling information around the film. By observing the photos taken around the Chinese characters or English numbers and other label content is clear to determine whether the content of the shot is clear, such as unclear should be re-shooting.
Generally, there are two reasons why the photo is not clear, such as finding that the Chinese characters or English numbers around the photo have heavy shadows, it means that the camera shakes when shooting, the treatment method is to use a tripod, turn on the camera’s anti-shake function, add the shutter line and other measures; if you find that the Chinese characters or English numbers around the photo are not clear but there are no heavy shadows, it is often not the right focus, in the shooting of MRI and CT film of the small If you do not use the macro or super macro photography function when taking MRI and CT film images, it is easy to cause misfocusing and unclear images, therefore, when you press the shutter halfway for auto-focusing, if the focus light flashes, it indicates that the focus is not correct and you should check whether the focus mode is correct.