BOSCH EWE-FCP500-IW--> 100--> Кепка KV+

Кепка KV+

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Кепка KV+



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Покрасил кепку АРКТЕРИКС. Что из этого вышло?

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Кепка KV+

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Кепка KV+

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Kilovoltage peak (kVp) is the peak potential applied to the x-ray tube, which accelerates electrons from the cathode to the anode in radiography or computed tomography.

Tube voltage, in turn, determines quantity and quality of the photons generated.

Кепка KV+

An increase in kVp extends and intensifies the x-ray emissionsuch that the.
Aug 27, 2012 · There are several ways to express the losses caused by pipe fittings and equipment. Depending on the calculation programs or methods available and engineer may require to convert between one or another.

Кепка KV+

This article details the equations required to convert between the resistance coefficient and flow coefficient methods (K, Cv Kv).
Sep 21, 2011 · This is the beginning of a 4 week series going over the settings on a x ray unit and how they affect image quality.

The first I am going to cover is kilovoltage peak or kVp.

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Electric field strength unit conversion between and kilovolt/meter, kilovolt/meter volt/kilometer conversion inV/km kV/m conversion chart
Kv=Water avera ge flow coefficien ts in m /h crossing the valve with a pres sure of P=1 bar at 15 C.

3 P=G( Cv=Q G/ P Kv=Q G/ P Q Cv Q Kv The below table 1 presents the Flow Coefficients for Full Port & Reduced - Port Ball Valves.

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This number represents the flow required to produce at 1 psig pressure drop across the valve. This entry was posted in and tagged on by This is the beginning of a 4 week series going over the settings on a x ray unit and how they affect image quality.
The first topic am going по ссылке cover is kilovoltage peak or kVp.
Changing the kVp on a unit directly associated with the overall contrast of an image referred to as the gray scale of contrast.
Some x ray units have a fixed kVp typically in the range of 65 — 75 and some are changeable from 50 — 100.
For those units with a fixed kVp you will not be able to change this setting on your x ray unit.
A quick note, changing kVp affects the QUALITY Автоматы применения Electric 3П3Т АВТ.

Выкл. EZC100 60 A EZC100B3 x rays produced.
Now onto how it does that.
Now we are getting some really technical stuff Increasing the kVp setting ie, 60 to 80 increases the potential difference between the cathode and the anode in the x ray tube of the x ray unit.
This increases the velocity and kinetic energy of electrons moving from cathode to the anode target.
This results in x ray photons produced with increased kinetic energy.
This increased kinetic energy allows x rays to have more penetrability of objects.
While this sounds like a great idea, the problem is that as you continue to increase the kVp the image quality degrades by creating an overall grayer image with little contrast.
A small kVp ie, 40 in the diagram will produce an image of high contrast note the visible difference ошибаетесь.

Кепка KV+

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The problem is that few grays are visible.
This is referred to as a short gray scale.
A high kVp ie, 100 on the diagram below will produce an image with low contrast note the overall gray line with few blacks and whites.
This will show many different grays.
This is referred to as a long gray scale.
The problem is that grays are so similar in shade that it is difficult to detect small changes between them creating problem when interpreting radiographs for small changes such as incipient carious lesions.
Since the extremes have both good and bad about them, in dentistry we have split difference so to speak.
Ideal kVp settings typically are between 65 — 75 what most fixed units have.
This creates an image with more grays than at 40, but with more visible difference between those gray shades than at 100.
See the diagram below to see the difference the different kVp settings.
I hope these few points about kVp setting changes are informative to you and give you a better understanding of the how this setting affects image contrast.
If you have any questions or comments about kVp, please let me know.
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Shawneen Gonzalez Post author A low contrast such as with 90 and 100 kVp is not desirable in dentistry as yes, it would make interpretation of small changes much more difficult.
Please let me know if this helps or you have any more questions.
Shawneen Gonzalez author Changing the kVp can help in some cases but what is more important would be changing the horizontal and vertical angles and taking another radiograph.
Interesting question, thanks for asking.
Shawneen Gonzalez, I am not a radiologist so forgive my question if it appears trivial.
If I am not wrong, the ability of the x-ray photons to penetrate a body decreases increases with decreasing increasing kVp.
Consequently, at a lower higher kVp I expect an x-ray radiogram appears brighter darker, resulting in a larger shorter gray scale.
This is in contrast with the showed picture.
Where I wrong?
Shawneen Gonzalez Post author Luca, You are correct that an increased kVp leads to an increased penetration of x rays through the body.
You are also correct that a higher kVp leads to a darker radiograph.
Due to more x rays high kVp passing through the body more pass through objects and interact with the image receptor creating a longer gray scale.
A low kVp does not have the power for many of the x rays to pass through different objects hence the shorter gray scale.
Does this help or make it more confusing?
Pls sir, I need help regarding the equivalence of kGy and kVp.
How was it presented to you?
I have a question regarding how to adjust kVp for the detection of root fractures on an xray.
If increasing kVp lowers the contrast of an image creating a larger gray scalewould this be helpful in the detection of the fracture />Or would you need more contrast and therefore a lower kVp to better see it?
Shawneen Gonzalez Post author A lower kVp will increase contrast but the bigger issue with seeing a fracture line dependent on the direction of x rays and читать fracture plane.
Two images with different horizontal and vertical angles may with detection of a fracture more than changing kVp.
This information is meant as a learning tool and not a diagnostic tool.
Any and all diagnoses should be made by your personal physician or dentist after clinical and radiographic findings and medical and dental health history.

Комментарии 14

  • Симпатичная мысль

  • Браво, какие нужная фраза..., блестящая мысль

  • Интересная тема, спасибо автор порадовал, подскажите, где здесь видел что-то похожее ? еще разок хояется поюзать.

  • Совершенно случайное совпадение

  • Охотно принимаю.

  • По моему мнению Вы не правы. Могу отстоять свою позицию. Пишите мне в PM, обсудим.

  • Вы не правы. Я уверен. Могу это доказать. Пишите мне в PM, обсудим.

  • Первые не знают кто такой Билл Гейтс, а вторые его не любят. В жопу раненый джигит далеко не убежит Любовь за деньги обходится дешевле. Секс – это наследственное. Если ваши родители сексом не занимались, то ваши шансы заняться им ничтожны.

  • Как раз в тему, прикольненько

  • Мне нравится эта идея, я полностью с Вами согласен.

  • Вы абсолютно правы.

  • Хороший пост! Подчерпнул для себя много нового и интересного! Пойду ссылку другу дам в аське :)

  • бред полный

  • Не судите за оффтоп. Но мой Rss не подхватывает Вашу ленту, я уже и так и так, пишет что запрещенная команда. Приходится лично к Вам в гости заглядывать каждый день, уже прямо как на работу хожу к Вам. Правда, я уже за неделю все из нового прочитал. Темы у Вас такие что за душу берут, и за кошелек тоже - и то хочется сделать, и это попользовать. До встречи в пятницу.

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