A negatoscope is a special device that allows you to analyze radiographs, as well as compare a number of images to make the correct diagnosis for the patient or to monitor the disease during treatment.
Medical negatoscope allows you to study both dry and wet negative images. This device is used constantly in various medical institutions or during classes in classrooms. Usually, for use, the negatoscope is fixed on a special bracket, and the image is viewed in a horizontal position.
Modern negatoscopes
The negatoscope consists of equipment that regulates the operation of the device, a lamp, a steel case, mounting hardware and acrylic glass. This design of the device is universal and allows using it both on a horizontal surface and on a wall. The functioning of the device is based on the light passing through the glass and the image, which scatters and “transfers” the necessary information. Convenience of image analysis is provided by the presence of shutters for iris surface and the function of adjusting the brightness of the glow.
The most modern models can be equipped with a liquid crystal display, work both on batteries and on mains. At the same time, the price of such medical negatoscopes is, of course, slightly higher.
As a rule, a modern negatoscope is equipped with fluorescent lamps. They practically do not distort the picture with constant flickering, and when the device starts up, they flare up much faster. At the same time, a negatoscope with fluorescent lamps also has its advantages - it will last much longer and more democratic in price.
Features
Modern medical negatoscopes are classified by screen size on:
- single frame;
- two-frame;
- three-frame;
- four-frame.
The device screens, designed for 3 and 4 radiographs, are divided into two separate zones with individual illumination of each of them (single-frame inclusion). Bright scattered light allows you to study the smallest details in the picture and is produced by fluorescent or fluorescent lamps, which differ in the level of brightness of the glow.
Before acquiring a negatoscope, it is necessary to study the following characteristics and determine the purpose:
- the purpose of the equipment is a general-purpose medical negatoscope, for mammography, traumatology, dentistry, etc.
- case design - all-metal or collapsible;
- lamp power, lamp type, glow color;
- type of power - mains or battery;
- viewing screen settings (size, material);
- installation type - desktop or wall model;
- percentage of uneven lighting;
- the possibility of dimeric brightness adjustment.
For medical facilities
The two-frame medical negatoscope NM-2 with a size of 430x720 mm is designed to view wet and dry x-rays. It can be placed both on the wall and on a horizontal surface.
This model is most often used to equip medical offices of various profiles and X-ray departments in medical institutions.
The cost of the NM-2 medical negatoscope is in the range of 46-50 thousand rubles.
Features and Benefits:
- through the use of an electronic control unit, you can turn on the lamp instantly and without flickering;
- stepless brightness control of each section;
- due to the use of fluorescent lamps with high light output, insignificant heating and bright glow with low power consumption are ensured;
- the possibility of frame-by-frame inclusion, which allows you to view both a group of pictures at the same time, and each picture individually;
- anti-glare screen coating;
- easy and quick lamp replacement;
- for mounting pictures - a convenient roller clip.
Single-frame negatoscope 1-02
This model is 430x370 mm in size and is intended for viewing in transmitted light on the screen of radiographs and a series of images for diagnosing diseases.
It is used to equip X-ray rooms and medical departments of various profiles in medical facilities.
This medical negatoscope is available in four different sizes.
Product price: 7500-9000 rub.
Typical advantages (judging by the reviews):
- full metal case;
- stepless brightness adjustment in the range from 40 to 100%;
- the presence of a milky white polystyrene screen;
- the ability to install on a table or wall;
- ring fluorescent lamps are used as a light source;
- Thanks to the powder coating of the casing, high resistance to disinfecting is achieved.
Widespread use
The medical negatoscope NM-1 LED is designed to view dry and wet x-rays in transmitted light.
Price: 26-34 thousand rubles.
Using:
- used to equip X-ray rooms of clinics, laboratories, hospitals and research institutes.
- models of negatoscopes with LED technology and screen brightness, which allows to shine through images at high optical density;
Features:
- The negatoscope is equipped with the option of adjusting the light spot by position, size and brightness.
Portable negatoscope NP-10
Designed for viewing under conditions of stationary x-ray departments in transmitted light x-ray images in a format of up to 24x0 cm inclusive.
Structurally, this medical negatoscope is a metal case mounted on a base with two brackets. The device can be mounted on a wall or mounted on a table. The negatoscope housing can be installed in vertical or inclined positions. Using the handle on the side wall of the housing, the tilt is fixed.
On the front of the negatoscope is a metal frame securing the milk glass from foam. Mounted on the frame are brackets designed for hanging or clamping radiographs. In the lower part of the frame there is a groove for water drainage in the case of wet images. On the back of the device with three screws, a cap is attached with an integrated lamp bulb holder that illuminates the screen. The device is plugged in.
Specifications:
- number of lamps - 1;
- light source - incandescent lamp;
- lamp power - 60 W;
- screen size - 300x300 mm.