Claims (15)
1. Postupak koji obuhvaća:
prijem podataka o snimku koji su reprezentativni za rendgenski snimak najmanje dijela subjekta koji obuhvaća tkivo i dobivanje podataka o snimanju izvođenjem procedure rendgenskog snimanja, pri čemu je prvi dio rendgenskog snimka direktno izložen, a drugi dio rendgenskog snimka predstavlja tkivo u regiji subjekta; i
određivanje mjere prigušenja ovisno o energetskoj mjeri dobivenoj iz prvog dijela rendgenskog snimka i energetskoj mjeri dobivenoj iz drugog dijela rendgenskog snimka; naznačene time, što
se koristi mjera prigušenja za procjenu gustoće tkiva unutar barem dijela regije subjekta;
se određuje referentna točka na rendgenskom snimku, gdje se određivanje referentne točke vrši ovisno o procijenjenoj gustoći tkiva;
gdje procedura rendgenskog snimanja obuhvaća odabir ulazne energije rendgenskog zračenja koja je ispod praga zasićenja rendgenskog detektora koji koristi proceduru rendgenskog snimanja, tako da se vrijednosti piksela u prvom dijelu rendgenskog snimka razlikuju ovisno o ulaznoj energiji rendgenskih zraka.1. Procedure that includes:
receiving image data that is representative of an x-ray image of at least part of the subject that includes tissue and obtaining image data by performing an x-ray image procedure, wherein the first part of the x-ray image is directly exposed and the second part of the x-ray image represents the tissue in the region of the subject; and
determination of the attenuation measure depending on the energy measure obtained from the first part of the X-ray image and the energy measure obtained from the second part of the X-ray image; indicated by what
an attenuation measure is used to estimate tissue density within at least a portion of the subject region;
a reference point is determined on the X-ray image, where the determination of the reference point is made depending on the estimated tissue density;
where the x-ray imaging procedure comprises selecting an input x-ray energy that is below the saturation threshold of the x-ray detector using the x-ray imaging procedure, so that the pixel values in the first part of the x-ray image differ depending on the input x-ray energy.
2. Postupak prema patentnom zahtjevu 1, gdje određivanje mjere prigušenja obuhvaća dijeljenje energetske mjere dobivene iz prvog dijela rendgenskog snimka i energetske mjere dobivene iz drugog dijela rendgenskog snimka kako bi se dobila vrijednost prigušenja; i dijeljenje vrijednosti prigušenja sa debljinom tkiva u regiji subjekta da bi se dobila mjera prigušenja.2. The method according to patent claim 1, where determining the attenuation measure comprises dividing the energy measure obtained from the first part of the X-ray image and the energy measure obtained from the second part of the X-ray image in order to obtain the attenuation value; and dividing the attenuation value by the tissue thickness in the subject region to obtain a measure of the attenuation.
3. Postupak prema patentnom zahtjevu 1 ili 2, koji dalje obuhvaća dobivanje energetske mjere iz prvog dijela rendgenskog snimka korištenjem najmanje jedne vrijednosti piksela najmanje jednog piksela u prvom dijelu rendgenskog snimka; i dobivanje energetske mjere drugog dijela rendgenskog snimka korištenjem najmanje jedne vrijednosti piksela najmanje jednog piksela u drugom dijelu rendgenskog snimka.3. The method according to patent claim 1 or 2, which further comprises obtaining an energy measure from the first part of the X-ray image using at least one pixel value of at least one pixel in the first part of the X-ray image; and obtaining an energy measure of the second part of the X-ray image using at least one pixel value of the at least one pixel in the second part of the X-ray image.
4. Postupak prema bilo kojem od prethodnih patentnih zahtjeva, gdje odabir referentne točke obuhvaća odabir između prve procedure i druge procedure za određivanje referentne točke, a odabir između prve procedure i druge procedure se zasniva na procijenjenoj gustoći tkiva.4. A method according to any of the preceding claims, wherein the selection of the reference point comprises a selection between a first procedure and a second procedure for determining the reference point, and the selection between the first procedure and the second procedure is based on an estimated tissue density.
5. Postupak prema bilo kojem od prethodnih patentnih zahtjeva, koji dalje obuhvaća korištenje referentne točke za određivanje, za svaku od mnoštva točaka u regionu subjekta, debljine hfat masti i debljinu hint tkiva od interesa.5. A method according to any one of the preceding claims, further comprising using a reference point to determine, for each of a plurality of points in the subject region, the hfat fat thickness and the hint tissue thickness of interest.
6. Postupak prema patentnom zahtjevu 4, gdje odabir između prve procedure i druge procedure obuhvaća odabir prve procedure ako je procijenjena gustoća tkiva veća od granične gustoće tkiva i odabir druge procedure ako je procijenjena gustoća tkiva niža od granične gustoće tkiva.6. The method of claim 4, wherein the selection between the first procedure and the second procedure comprises selecting the first procedure if the estimated tissue density is greater than the threshold tissue density and selecting the second procedure if the estimated tissue density is lower than the threshold tissue density.
7. Postupak prema bilo kojem od prethodnih patentnih zahtjeva, gdje region subjekta obuhvaća najmanje dio dojke, a procijenjena gustoća tkiva je procijenjena gustoća tkiva najmanje dijela dojke.7. A method according to any one of the preceding claims, wherein the subject region comprises at least a portion of the breast, and the estimated tissue density is an estimated tissue density of at least a portion of the breast.
8. Postupak prema patentnom zahtjevu 4, gdje region subjekta obuhvaća najmanje dio dojke; a odabir referentne točke u prvoj proceduri obuhvaća odabir referentne točke blizu ruba dojke; a odabir referentne točke u drugoj proceduri obuhvaća odabir referentne točke dalje od ruba dojke.8. The method according to patent claim 4, where the subject region includes at least part of the breast; and selecting a reference point in the first procedure includes selecting a reference point near the edge of the breast; and the selection of a reference point in the second procedure includes the selection of a reference point further from the edge of the breast.
9. Postupak prema patentnom zahtjevu 4, gdje regija subjekta obuhvaća najmanje dio dojke; gdje svaka od prve procedure i druge procedure obuhvaća određivanje granice tkiva na rendgenskom snimku, pri čemu granica tkiva dijeli prvu regiju tkiva od druge regije tkiva, i odabir referentne točke ovisno od granici tkiva; druga procedura dalje obuhvaća ponavljanje položaja granice tkiva sve dok se ne ispuni kriterij granice tkiva; a odabir referentne točke u prvoj proceduri obuhvaća odabir referentne točke u prvoj regiji tkiva ili na granici tkiva; a odabir referentne točke u drugoj proceduri obuhvaća odabir referentne točke na ponovljenoj granici tkiva ili u drugoj regiji tkiva.9. The method according to patent claim 4, where the subject region includes at least part of the breast; wherein each of the first procedure and the second procedure comprises determining a tissue boundary on the x-ray image, wherein the tissue boundary divides the first tissue region from the second tissue region, and selecting a reference point depending on the tissue boundary; the second procedure further comprises repeating the position of the tissue boundary until the tissue boundary criterion is met; and selecting a reference point in the first procedure comprises selecting a reference point in a first tissue region or at a tissue boundary; and selecting a reference point in another procedure comprises selecting a reference point at a repeated tissue border or in another tissue region.
10. Postupak prema bilo kojem od prethodnih patentnih zahtjeva, koji obuhvaća dobivanje podataka o snimku izvođenjem procedure rendgenskog snimanja, gdje procedura rendgenskog snimanja obuhvaća proceduru mamografije.10. A method according to any of the preceding claims, comprising obtaining image data by performing an x-ray imaging procedure, wherein the x-ray imaging procedure comprises a mammography procedure.
11. Postupak prema patentnom zahtjevu 10, gdje je ulazna energija rendgenskog snimanja manja od 0.5 mGy.11. The method according to patent claim 10, where the input energy of X-ray imaging is less than 0.5 mGy.
12. Postupak prema bilo kojem od prethodnih patentnih zahtjeva, gdje se rendgenski snimak dobiva pomoću monoenergetskih rendgenskih zraka.12. The method according to any of the preceding claims, wherein the X-ray image is obtained using monoenergetic X-rays.
13. Postupak prema bilo kojem od prethodnih patentnih zahtjeva, gdje se rendgenski snimak dobiva pomoću polienergetskih rendgenskih zraka.13. The method according to any one of the preceding claims, wherein the X-ray image is obtained using polyenergetic X-rays.
14. Postupak prema bilo kojem od prethodnih patentnih zahtjeva, koji dalje obuhvaća određivanje prvog dijela i drugog dijela rendgenskog snimka segmentiranjem podataka o snimku.14. A method according to any one of the preceding claims, further comprising determining a first part and a second part of an X-ray image by segmenting the image data.
15. Uređaj koji sadrži procesor konfiguriran da:
primi podatke o snimku koji su reprezentativni za rendgenski snimak barem dijela subjekta koji obuhvaća tkivo i dobije podatke o snimku izvođenjem procedure rendgenskog snimanja, gdje je prvi dio rendgenskog snimka direktno izložen, a drugi dio rendgenskog snimka je reprezentativan za tkivo u regiji subjekta; i
odredi mjeru prigušenja ovisno o energetskoj mjeri dobivenoj iz prvog dijela rendgenskog snimka i energetskoj mjeri dobivenoj iz drugog dijela rendgenskog snimka,
naznačen time, što je procesor konfiguriran da
koristi mjeru prigušenja za procjenu gustoće tkiva unutar najmanje dijela regije subjekta;
odredi referentnu točku na rendgenskom snimku, gdje se određivanje referentne točke vrši ovisno o procijenjenoj gustoći tkiva; i
izvrši proceduru rendgenskog snimanja odabirom ulazne energije rendgenskog zračenja koja je ispod praga zasićenja detektora rendgenskih zraka koji se koristi u proceduri rendgenskog snimanja tako da se vrijednosti piksela u prvom dijelu rendgenskog snimka razlikuju ovisno o ulaznoj energiji rendgenskih zraka.15. A device containing a processor configured to:
receives image data that is representative of an x-ray image of at least part of the subject that includes tissue and obtains image data by performing an x-ray imaging procedure, where the first part of the x-ray image is directly exposed and the second part of the x-ray image is representative of the tissue in the subject region; and
determine the attenuation measure depending on the energy measure obtained from the first part of the X-ray image and the energy measure obtained from the second part of the X-ray image,
indicated by the processor being configured to
uses an attenuation measure to estimate tissue density within at least a portion of the subject region;
determine the reference point on the X-ray image, where the determination of the reference point is made depending on the estimated tissue density; and
perform the x-ray imaging procedure by selecting an input x-ray energy that is below the saturation threshold of the x-ray detector used in the x-ray imaging procedure so that pixel values in the first part of the x-ray image vary depending on the input x-ray energy.