SU129741A1 - The method of measuring the ratio of the gradient to the intensity of the magnetic field, changing in time - Google Patents
The method of measuring the ratio of the gradient to the intensity of the magnetic field, changing in timeInfo
- Publication number
- SU129741A1 SU129741A1 SU637025A SU637025A SU129741A1 SU 129741 A1 SU129741 A1 SU 129741A1 SU 637025 A SU637025 A SU 637025A SU 637025 A SU637025 A SU 637025A SU 129741 A1 SU129741 A1 SU 129741A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- gradient
- magnetic field
- measuring
- ratio
- intensity
- Prior art date
Links
Landscapes
- Magnetic Resonance Imaging Apparatus (AREA)
Description
В основном авт. JB. 113185 описана градиентна катушка дл измерени отношенн градиента к напр женности магнитного пол , измен ющегос во времени, кмеюнда градиентную и нолевую обмотки.Basically auth. Jb. 113185 describes a gradient coil for measuring the ratio of the gradient to the intensity of a time-varying magnetic field, including a gradient and zero winding.
При измерени х по предлагаемому способу полевую и градиентную обмотки градиентной катушки включают днфференннально в цепь интегратора и после введени катушю в лшгнитиое поле уравнивают напр жени на обмотках так, чтобы при заданной напр женност) магнитиого пол их разность была равна нулю. При этом на интеграторе получаетс крива изменени отношени градиента к напр женности пол во времени.When measuring the proposed method, the field and gradient windings of the gradient coil are differentiated in the integrator circuit and, after the coil is inserted in the differential field, the voltage on the windings is equalized so that, for a given magnetic field, the difference is zero. In this case, on the integrator, the curve of the change in the ratio of the gradient to the field intensity in time is obtained.
Такой способ дает воз.мол ность сниматв кривую изменеии показател .спада в одной точке, что упрогц.ает процесс измерени .This method gives the possibility of taking a curve of change in the index of decay at one point, which facilitates the measurement process.
Па чертеже изображена схема устройства дл осугиествлени предлагаемого способа.Pa the drawing shows a diagram of the device for initiating the proposed method.
При измерени х градиентную / и полевую 2 обмотки градиентной катушки включают дифференциалвно в цепь интегратора 3 и помещают катушку в исследуемое поле. Папр жени на обмотках 1 и 2 уравнивают при заданном значении пол с помош,вю компе;гсациониого реостата 4 так, чтобы их разность была равна нулю.When measuring the gradient / and field 2 windings of the gradient coil, the differential integrator 3 is inserted into the circuit and the coil is placed in the field under study. The windings on windings 1 and 2 equalize for a given value the sex with the help, the computer, the xation rheostat 4 so that their difference is equal to zero.
В результате на экране интегратора получаетс крива разности сигналов от полевой и градиентной обмоток катушки дл различных моментов времени намагничивани .As a result, on the integrator screen, the curve of the signal difference from the field and gradient coil windings is obtained for different magnetization times.
№ 129741 Предмет изобретени № 129741 The subject invention
Способ измерени отношени градиента к напр женности магнитного пол , измен ющегос во времени, осуществл емый с помощью градиентной катушки по авт. св. № 113185, имеющей градиентную и полевую обмотки, отличающийс тем, что полевую и градиентную обмотки включают дифференциально в цепь интегратора и после введени катушки в магнитное поле уравнивают напр жени на обмотках так чтобы при заданной напр женности магнитного пол их разность была ра-вна нулю дл получени на интеграторе кривой изменени отношени градиента к напр женности пол во времени.A method of measuring the ratio of the gradient to the intensity of a magnetic field that varies in time using a gradient coil using an autom. St. No. 113185, having gradient and field windings, characterized in that the field and gradient windings are differentially connected to the integrator circuit and after the coil is inserted into the magnetic field, the voltage on the windings is equalized so that, for a given magnetic field strength, their difference is zero for obtaining on the integrator a curve of a change in the ratio of the gradient to the field strength in time.
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Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU637025A SU129741A1 (en) | 1959-08-21 | 1959-08-21 | The method of measuring the ratio of the gradient to the intensity of the magnetic field, changing in time |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SU637025A SU129741A1 (en) | 1959-08-21 | 1959-08-21 | The method of measuring the ratio of the gradient to the intensity of the magnetic field, changing in time |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU113185 Addition |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| SU129741A1 true SU129741A1 (en) | 1959-11-30 |
Family
ID=48400883
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| SU637025A SU129741A1 (en) | 1959-08-21 | 1959-08-21 | The method of measuring the ratio of the gradient to the intensity of the magnetic field, changing in time |
Country Status (1)
| Country | Link |
|---|---|
| SU (1) | SU129741A1 (en) |
-
1959
- 1959-08-21 SU SU637025A patent/SU129741A1/en active
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