DE1055700B - Method for recording and reproducing X-ray images with television equipment - Google Patents
Method for recording and reproducing X-ray images with television equipmentInfo
- Publication number
- DE1055700B DE1055700B DEZ4773A DEZ0004773A DE1055700B DE 1055700 B DE1055700 B DE 1055700B DE Z4773 A DEZ4773 A DE Z4773A DE Z0004773 A DEZ0004773 A DE Z0004773A DE 1055700 B DE1055700 B DE 1055700B
- Authority
- DE
- Germany
- Prior art keywords
- image
- ray
- television
- recording
- images
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims description 22
- 230000005855 radiation Effects 0.000 claims description 4
- 238000001454 recorded image Methods 0.000 claims description 2
- 230000001360 synchronised effect Effects 0.000 claims description 2
- 238000002594 fluoroscopy Methods 0.000 claims 3
- 238000005562 fading Methods 0.000 claims 2
- 238000010521 absorption reaction Methods 0.000 claims 1
- 238000009825 accumulation Methods 0.000 claims 1
- 230000003321 amplification Effects 0.000 claims 1
- 230000005540 biological transmission Effects 0.000 claims 1
- 238000012217 deletion Methods 0.000 claims 1
- 230000037430 deletion Effects 0.000 claims 1
- 230000004069 differentiation Effects 0.000 claims 1
- 230000009977 dual effect Effects 0.000 claims 1
- 230000000694 effects Effects 0.000 claims 1
- 239000003623 enhancer Substances 0.000 claims 1
- 230000002045 lasting effect Effects 0.000 claims 1
- 210000004072 lung Anatomy 0.000 claims 1
- 238000003199 nucleic acid amplification method Methods 0.000 claims 1
- 230000000737 periodic effect Effects 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 claims 1
- 238000004904 shortening Methods 0.000 claims 1
- 238000006862 quantum yield reaction Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G02—OPTICS
- G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
- G02B27/00—Optical systems or apparatus not provided for by any of the groups G02B1/00 - G02B26/00, G02B30/00
- G02B27/02—Viewing or reading apparatus
- G02B27/022—Viewing apparatus
- G02B27/023—Viewing apparatus for viewing X-ray images using image converters, e.g. radioscopes
-
- G—PHYSICS
- G11—INFORMATION STORAGE
- G11B—INFORMATION STORAGE BASED ON RELATIVE MOVEMENT BETWEEN RECORD CARRIER AND TRANSDUCER
- G11B17/00—Guiding record carriers not specifically of filamentary or web form, or of supports therefor
- G11B17/08—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records
- G11B17/12—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records with axial transfer to the turntable from a stack with a vertical axis
- G11B17/16—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records with axial transfer to the turntable from a stack with a vertical axis by mechanism in stationary centre post, e.g. with stepped post, using fingers on post
- G11B17/162—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records with axial transfer to the turntable from a stack with a vertical axis by mechanism in stationary centre post, e.g. with stepped post, using fingers on post with means for detecting the diameter of the record
- G11B17/165—Guiding record carriers not specifically of filamentary or web form, or of supports therefor from consecutive-access magazine of disc records with axial transfer to the turntable from a stack with a vertical axis by mechanism in stationary centre post, e.g. with stepped post, using fingers on post with means for detecting the diameter of the record with mechanical detecting means
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/30—Transforming light or analogous information into electric information
- H04N5/32—Transforming X-rays
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/78—Television signal recording using magnetic recording
- H04N5/781—Television signal recording using magnetic recording on disks or drums
Landscapes
- Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- General Physics & Mathematics (AREA)
- Optics & Photonics (AREA)
- Television Signal Processing For Recording (AREA)
- Closed-Circuit Television Systems (AREA)
- Transforming Light Signals Into Electric Signals (AREA)
Description
DEUTSCHESGERMAN
Die nutzbare Röntgenbildverstärkung ist infolge statistischer Schwankungserscheinungen der Strahlungsbilder sehr begrenzt. Besonders tritt dieses bei der Durchleuchtung dicker Objekte in Erscheinung, da die »Belichtung« der Photokathode der elektronischen Röntgenbildverstärkeranordnung nicht ausreicht. The usable X-ray image intensification is due to statistical fluctuations in the radiation images very limited. This is particularly evident when radiographing thick objects, because the "exposure" of the photocathode of the electronic X-ray image intensifier arrangement is insufficient.
Es ist bekannt, Fernsehbildsignale auf Magnetbändern zu speichern. Diese Bänder werden mit sehr großer Geschwindigkeit an Aufzeichenköpfen vorbeibewegt. Der Bandbedarf ist dabei außerordentlich hoch. Zur Aufzeichnung von Röntgen-Fernsehbildern ist diese Aufzeicheriteohnik jedoch nicht geeignet, weil es notwendig ist, wenige informationsreiche Röntgenbilder beliebig lang sichtbar zu machen.It is known to store television image signals on magnetic tapes. These tapes come with a lot moves past recording heads at high speed. The tape requirement is extraordinary high. However, this recording unit is not suitable for recording X-ray television images because it is necessary to make a few information-rich x-ray images visible for any length of time.
Es ist auch schon vorgeschlagen worden, die von einer Röntgenbild-Fernsehaufnahmeröhre erzeugten, zeitlich zerlegten Röntgenbild-Fernsehsignale auf den Umfang eines mit Bildfrequenz umlaufenden, magnetischen, endlosen Speichers aufzuzeichnen, der eine Magnetbandschleife darstellt.It has also been proposed that those produced by an X-ray television pick-up tube, Time-divided X-ray television signals on the circumference of a magnetic, to record endless memory, which is a magnetic tape loop.
Gemäß vorliegender Erfindung wird ein Verfahren zur Aufnahme und Wiedergabe von Röntgenbildern mit Fernsehmitteln vorgeschlagen, wobei die von einer Röntgenbild-Fernsehaufnahmeröhre erzeugten, zeitlich zerlegten Röntgenbild-Fernsehimpulse auf dem Umfang eines magnetisch beschriftbaren, endlosen Speichers aufgezeichnet Averden. Dieses Verfahren ist dadurch gekennzeichnet, daß unter Anwendung des Zeilensprungverfahrens die Impulse der beiden Halbbilder eines Röntgenbildes als getrennte Spuren ■ auf dem Gesamtumfang einer mit Bildfrequenz umlaufenden Magnetbandschleife aufgezeichnet werden, die zur beliebig langen Sichtbarmachung des Röntgenbildes vom AViedergabekopf beliebig wiederbolbar abgetastet wird, wobei die zum Betrieb der Fernsehanlage benötigten Synchron- und Abtastimpuilse auf von der Bildaufzeichnung getrennten Randspuren aufgezeichnet werden.According to the present invention, a method for recording and reproducing x-ray images is provided proposed with television means, which are generated by an X-ray television recording tube, in time decomposed X-ray image television impulses on the circumference of a magnetically inscribable, endless one Memory recorded Averden. This method is characterized in that using the Interlace method, the pulses of the two fields of an X-ray image as separate tracks ■ the entire scope of a magnetic tape loop rotating at frame rate is recorded, which can be scanned for any length of time to make the X-ray image visible from the A playback head is, with the synchronization and sampling pulses required to operate the television system edge tracks separate from the image recording are recorded.
Außer dem Vorteil, den Bildinhalt auf einer einzigen Bandschleife beliebig oft wiedergeben zu können, entfällt durch das Auftragen der Synchron- und Abtastimpulse auf einer Randspur des Speichers ein besonderer Taktgeber. Durch eine Drehzahländerung des Speichers ist es fernerhin möglich, die Bildfrequenz des Fernsehsystems in gewünschten Grenzen zu variieren, was besonders zur Aufnahme stroboskopischer Bildfolgen notwendig ist.Apart from the advantage of being able to reproduce the image content as often as you like on a single loop can be omitted because the synchronous and scanning pulses are applied to an edge track of the memory a special clock. By changing the speed of the memory, it is also possible to adjust the frame rate of the television system to vary within desired limits, which is particularly good for stroboscopic recording Image sequences is necessary.
Die Aufzeichnung der Signale erfolgt in bekannter Weise durch einen Aufzeichenkopf. Das aufzuzeichnende Bildsignal, auch Videosignal genannt, wird dadurch gewonnen, daß man das auf einer Fernsehaufnahmeröhre gespeicherte Röntgenbild in bekannter Weise, zeitlich zerlegt, abtastet. Als AufnahmeröhreThe signals are recorded in a known manner by a recording head. The one to be recorded Image signal, also called video signal, is obtained by putting it on a television pickup tube stored X-ray image in a known manner, broken down over time, scanned. As a pick-up tube
Verfahren zur Aufnahme und Wiedergabe von Röntgenbildern mit FernsehmittelnMethod for recording and reproducing X-ray images with television equipment
Anmelder:Applicant:
Zeiss Ikon Aktiengesellschaft,
Stuttgart-S, Dornhaldenstr. 5Zeiss Ikon Aktiengesellschaft,
Stuttgart-S, Dornhaldenstr. 5
Dipl.-Phys. Manfred Keller, Kiel-Wik,
ist als Erfinder genannt wordenDipl.-Phys. Manfred Keller, Kiel-Wik,
has been named as the inventor
kann ein direkt röntgenempfmdliches Röntgen-Ikonoskop, z. B. nach Patent 898 641, dienen. Der Speicher läuft infolge seiner Drehung an einem Wiedergabekopf vorbei und nimmt die gespeicherten Signale wieder auf. Nach durchgeführter Verstärkung dieser Signale erfolgt die Wiedergabe in bekannter Weise auf einer Fernsehbildröhre.a directly X-ray sensitive X-ray iconoscope, z. B. according to patent 898,641, serve. The memory runs as a result of its rotation on a playback head and picks up the stored signals again. After this has been strengthened Signals are reproduced in a known manner on a television picture tube.
Das aufgezeichnete, informationsreiche Bild kann beliebig lange auf der Fernsehbildröhre sichtbar gemacht werden, indem der Speicher fortwährend vor dem Wiedergabekopf mit der Bildfrequenz von vorzugsweise 25 Hz entsprechend einer Drehzahl von 1500 Umdrehungen vorbeirotiert. Mit dieser Verfahrensweise ist es möglich, auch bei der Durchleuchtung sehr dicker Objekte eine zur nutzbaren Bildverstärkung genügend hohe Austrittsdosis zu erhalten, mit der ein Bild mit großer »Nachrichtenergiebigkeit« aufgezeichnet werden kann.The recorded, information-rich image can be made visible on the television picture tube for any length of time be by the memory continuously in front of the playback head with the frame rate of preferably 25 Hz corresponding to a speed of 1500 revolutions. With this procedure it is possible to use a usable image intensification even when fluoroscopic very thick objects to obtain a sufficiently high exit dose, with which an image with great "news coverage" can be recorded.
Weiter ist es möglich, das elektrische Bildsignal beispielsweise mit Dioden zu beschneiden. Dadurch kann ein gewünschter Bereich aus dem Kontrastumfang herausgeschnitten und verstärkt werden. Bei genügend hoher Dosis ist dieser Kontrastausschnitt weiter differenzierbar und somit eine nutzbare Kontrastverstärkung durchführbar. Dieser in der Gradation verstärkte Kontrastausschnitt wird nun auf den Speicher aufgezeichnet und die Bildröhre mit diesem Kontrastausschnitt voll ausgesteuert. Auf diese Weise werden noch sehr feine Kontrastunterschiede wahrnehmbar. Bei Verwendung eines Röntgen-Ikonoskops nach Patent 898 641 mit hoher Quantenausbeute ist es auch möglich, den gesamten im Strahlungsbild vorhandenen Informationsinhalt auszuschöpfen, da das elektronische Rauschen des Fernsehsystems im Bildsignal kleiner ist als das Rauschen der Strahlungsbilder. Die Leistungsfähigkeit dieses Verfahrens geht wesentlich über die der Kontaktphotographie hinaus,It is also possible to cut the electrical image signal with diodes, for example. Through this a desired area can be cut out of the contrast range and reinforced. With enough With a high dose, this contrast section can be further differentiated and thus a useful contrast enhancement feasible. This contrast section, which is enhanced in the gradation, is now displayed on the Recorded memory and the picture tube fully controlled with this contrast section. In this way very fine contrast differences are still perceptible. When using an X-ray iconoscope according to patent 898 641 with a high quantum yield it is also possible to exhaust the entire information content present in the radiation image, there the electronic noise of the television system in the image signal is smaller than the noise of the radiation images. The power of this procedure goes significantly beyond that of contact photography,
909 507/462909 507/462
Claims (8)
Deutsche Patentschrift Nr. 517 567;
deutsche Patentanmeldung S 1258 VIII a/21 a1 (bekanntgemacht am 15.2. 1951).Considered publications:
German Patent No. 517 567;
German patent application S 1258 VIII a / 21 a 1 (published on February 15, 1951).
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ4773A DE1055700B (en) | 1955-03-07 | 1955-03-07 | Method for recording and reproducing X-ray images with television equipment |
DEZ5230A DE1086739B (en) | 1955-03-07 | 1955-11-10 | Method and device for recording and reproducing images produced by television means |
GB7210/56A GB797620A (en) | 1955-03-07 | 1956-03-07 | Improvements in or relating to the recording and reproduction of x-ray pictures |
FR1147557D FR1147557A (en) | 1955-03-07 | 1956-03-07 | Method and device for recording and reproducing fluoroscopic images by television |
FR71224D FR71224E (en) | 1955-03-07 | 1956-11-09 | Method and device for recording and reproducing fluoroscopic images by television |
GB34547/56A GB812468A (en) | 1955-03-07 | 1956-11-12 | Improvements in or relating to the recording and reproduction of signals produced by television means |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DEZ4773A DE1055700B (en) | 1955-03-07 | 1955-03-07 | Method for recording and reproducing X-ray images with television equipment |
Publications (1)
Publication Number | Publication Date |
---|---|
DE1055700B true DE1055700B (en) | 1959-04-23 |
Family
ID=7619238
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEZ4773A Pending DE1055700B (en) | 1955-03-07 | 1955-03-07 | Method for recording and reproducing X-ray images with television equipment |
DEZ5230A Pending DE1086739B (en) | 1955-03-07 | 1955-11-10 | Method and device for recording and reproducing images produced by television means |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DEZ5230A Pending DE1086739B (en) | 1955-03-07 | 1955-11-10 | Method and device for recording and reproducing images produced by television means |
Country Status (3)
Country | Link |
---|---|
DE (2) | DE1055700B (en) |
FR (2) | FR1147557A (en) |
GB (2) | GB797620A (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1146100B (en) * | 1959-12-16 | 1963-03-28 | Zeiss Ikon Ag | Device for recording television images on cinema film |
DE1155476B (en) * | 1961-09-19 | 1963-10-10 | Siemens Ag | Method and device for storing individual television images on endless recording tracks |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL250453A (en) * | 1960-04-12 | |||
US4122499A (en) * | 1966-12-06 | 1978-10-24 | Matsushita Electric Industrial Co., Ltd. | Video signal recording and reproducing system for special motion effects |
US4553185A (en) * | 1968-03-18 | 1985-11-12 | Ampex Corporation | Method and apparatus for recording and reproducing television or other broad band signals with an altered time base effect |
JPS5038291B1 (en) * | 1969-09-02 | 1975-12-09 | ||
JPS5112988Y1 (en) * | 1970-06-12 | 1976-04-07 | ||
JPS4890631A (en) * | 1972-03-04 | 1973-11-26 | ||
JPS51150232A (en) * | 1975-06-18 | 1976-12-23 | Matsushita Electric Ind Co Ltd | Picture multipication recording and regenerating device |
JPS51150233A (en) * | 1975-06-18 | 1976-12-23 | Matsushita Electric Ind Co Ltd | Picture multiplication recording and regenerating device |
US4916555A (en) * | 1976-03-19 | 1990-04-10 | Ampex Corporation | Method and apparatus for producing time base altered effects in data recording and reproducing apparatus |
Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE517567C (en) * | 1930-02-20 | 1931-02-05 | Edgar Schlesinger | Arrangement for television equipment |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE728838C (en) * | 1938-12-09 | 1942-12-10 | Guenther Krawinkel Dr Ing | Procedure for changing the frequency bandwidth of electrically transmitted messages |
DE856075C (en) * | 1949-11-09 | 1952-11-20 | Internova Trust | Electromagnetic sound recording and reproducing device |
DE927999C (en) * | 1953-07-01 | 1955-05-23 | Telefunken Gmbh | Apparatus for magnetic recording and reproduction of television images |
-
1955
- 1955-03-07 DE DEZ4773A patent/DE1055700B/en active Pending
- 1955-11-10 DE DEZ5230A patent/DE1086739B/en active Pending
-
1956
- 1956-03-07 GB GB7210/56A patent/GB797620A/en not_active Expired
- 1956-03-07 FR FR1147557D patent/FR1147557A/en not_active Expired
- 1956-11-09 FR FR71224D patent/FR71224E/en not_active Expired
- 1956-11-12 GB GB34547/56A patent/GB812468A/en not_active Expired
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE517567C (en) * | 1930-02-20 | 1931-02-05 | Edgar Schlesinger | Arrangement for television equipment |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1146100B (en) * | 1959-12-16 | 1963-03-28 | Zeiss Ikon Ag | Device for recording television images on cinema film |
DE1155476B (en) * | 1961-09-19 | 1963-10-10 | Siemens Ag | Method and device for storing individual television images on endless recording tracks |
Also Published As
Publication number | Publication date |
---|---|
FR71224E (en) | 1959-10-30 |
FR1147557A (en) | 1957-11-27 |
GB812468A (en) | 1959-04-22 |
DE1086739B (en) | 1960-08-11 |
GB797620A (en) | 1958-07-02 |
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