Patents by Inventor Lauri Halko
Lauri Halko has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11964169Abstract: A prescribing user can designate and prioritize clinical goals that can, in turn, serve as the basis for optimization objectives to guide the development of a radiation treatment plan. The prescribing user can then alter that prioritization of one or more clinical goals and view information regarding changes to fluence-based dose distributions that occur in response to those changes to relative prioritization amongst the clinical goals to thereby understand dosing tradeoffs that correspond to prioritization amongst the clinical goals.Type: GrantFiled: March 30, 2018Date of Patent: April 23, 2024Assignee: Varian Medical Systems International AGInventors: Emmi Ruokokoski, Ville Pietilä, Lauri Halko, Jarkko Y. Peltola, Christopher Boylan
-
Publication number: 20240100357Abstract: A control circuit configured as a multi-criteria optimizer generates a radiation therapy treatment plan. The circuit then determines a resultant dose distribution as a function of the radiation therapy treatment plan and presents, on a display, at least a part of that resultant dose distribution. The latter may comprise, for example, presenting at least one isodose line on the display. The control circuit then detects user manipulation of a user interface. By one approach, this manipulation does not include corresponding immediate movement of any part of the presented resultant dose distribution itself. In particular, the detected user manipulation does not result in dragged movement of an isodose line on the display.Type: ApplicationFiled: September 27, 2022Publication date: March 28, 2024Inventors: Jani Kurki, Matti Kemppainen, Laura Korhonen, Veli-Pekka Kihniä, Lauri Halko, Jarmo Makkonen, Pekka Sorvari
-
Publication number: 20240029847Abstract: An apparatus for developing an intensity-modulated radiation therapy treatment plan includes a memory that stores machine instructions and a processor that executes the machine instructions to receive a clinical goal associated with the treatment plan as a user input. The processor further executes the machine instructions to determine a plan objective based on the clinical goal, generate a cost function comprising a term based on the plan objective, and assign an initial value to a parameter associated with the term. The processor also executes the machine instructions to identify a microstate that results in a reduced value associated with the cost function, evaluate a fulfillment level associated with the clinical goal, and adjust the value of the parameter to improve the fulfillment level.Type: ApplicationFiled: October 5, 2023Publication date: January 25, 2024Applicant: Siemens Healthineers International AGInventors: Esa KUUSELA, Lauri HALKO
-
Patent number: 11823778Abstract: An apparatus for developing an intensity-modulated radiation therapy treatment plan includes a memory that stores machine instructions and a processor that executes the machine instructions to receive a clinical goal associated with the treatment plan as a user input. The processor further executes the machine instructions to determine a plan objective based on the clinical goal, generate a cost function comprising a term based on the plan objective, and assign an initial value to a parameter associated with the term. The processor also executes the machine instructions to identify a microstate that results in a reduced value associated with the cost function, evaluate a fulfillment level associated with the clinical goal, and adjust the value of the parameter to improve the fulfillment level.Type: GrantFiled: October 13, 2021Date of Patent: November 21, 2023Assignee: SIEMENS HEALTHINEERS INTERNATIONAL AGInventors: Esa Kuusela, Lauri Halko
-
Publication number: 20230013729Abstract: New techniques are described herein for providing a user-friendly interface for adjusting dose distribution values during optimization of a radiation application plan. In an embodiment, a graphical user interface is provided that provides an image of a target area for a radiation application, and a graphical overlay of a dose distribution disposed over the target area that visually represents the optimized dose distribution according to the input dose parameters. In one or more embodiments, the dose distribution may be automatically calculated from input parameters supplied by a user through the graphical user interface prior to optimization. A user (such as a clinician, radiation oncologist, or radiation therapy operator, etc.) is able to modify the visualization of the dose distribution volume during optimization via a user input device in conjunction with the graphical user interface and have the modification adjusted in real-time.Type: ApplicationFiled: September 19, 2022Publication date: January 19, 2023Inventors: Risto AHONEN, Lauri HALKO, Jarkko Y. PELTOLA, Mikko VAINIO
-
Patent number: 11449208Abstract: New techniques are described herein for providing a user-friendly interface for adjusting dose distribution values during optimization of a radiation application plan. In an embodiment, a graphical user interface is provided that provides an image of a target area for a radiation application, and a graphical overlay of a dose distribution disposed over the target area that visually represents the optimized dose distribution according to the input dose parameters. In one or more embodiments, the dose distribution may be automatically calculated from input parameters supplied by a user through the graphical user interface prior to optimization. A user (such as a clinician, radiation oncologist, or radiation therapy operator, etc.) is able to modify the visualization of the dose distribution volume during optimization via a user input device in conjunction with the graphical user interface and have the modification adjusted in real-time.Type: GrantFiled: July 6, 2017Date of Patent: September 20, 2022Assignee: Varian Medical Systems International AGInventors: Risto Ahonen, Lauri Halko, Jarkko Y. Peltola, Mikko Vainio
-
Patent number: 11278738Abstract: Cost functions and cost function gradients for use in radiation treatment planning can be computed based on an approximation of an “isodose” surface. Where a clinical goal is expressed by reference to a threshold isodose surface, a corresponding cost function component can be defined directly by reference to that isodose surface, and a corresponding contribution to the cost function gradient can be approximated by identifying voxels that are intersected by the threshold isodose surface and approximating the gradient of the dose distribution within each such voxel.Type: GrantFiled: March 29, 2019Date of Patent: March 22, 2022Assignee: Varian Medical Systems International AGInventors: Esa Kuusela, Hannu Laaksonen, Lauri Halko
-
Publication number: 20220036983Abstract: An apparatus for developing an intensity-modulated radiation therapy treatment plan includes a memory that stores machine instructions and a processor that executes the machine instructions to receive a clinical goal associated with the treatment plan as a user input. The processor further executes the machine instructions to determine a plan objective based on the clinical goal, generate a cost function comprising a term based on the plan objective, and assign an initial value to a parameter associated with the term. The processor also executes the machine instructions to identify a microstate that results in a reduced value associated with the cost function, evaluate a fulfillment level associated with the clinical goal, and adjust the value of the parameter to improve the fulfillment level.Type: ApplicationFiled: October 13, 2021Publication date: February 3, 2022Inventors: Esa KUUSELA, Lauri HALKO
-
Publication number: 20210393982Abstract: A method used for planning radiation treatment accessing information that includes calculated doses and calculated dose rates for sub-volumes in a treatment target, and also accessing information that includes values of a measure of the sub-volumes as a function of the calculated doses and the calculated dose rates. A graphical user interface includes a rendering that is based on the calculated doses, the calculated doses rates, and the values of the measure.Type: ApplicationFiled: May 18, 2021Publication date: December 23, 2021Inventors: Pierre Lansonneur, Perttu NIEMELA, Viljo Petaja, Simon Busold, Michiko Rossi, Matti Sakari Ropo, Michael Folkerts, Jessica Perez, Christel Smith, Adam Harrington, Eric Abel, Lauri HALKO
-
Patent number: 11158408Abstract: An apparatus for developing an intensity-modulated radiation therapy treatment plan includes a memory that stores machine instructions and a processor that executes the machine instructions to receive a clinical goal associated with the treatment plan as a user input. The processor further executes the machine instructions to determine a plan objective based on the clinical goal, generate a cost function comprising a term based on the plan objective, and assign an initial value to a parameter associated with the term. The processor also executes the machine instructions to identify a microstate that results in a reduced value associated with the cost function, evaluate a fulfillment level associated with the clinical goal, and adjust the value of the parameter to improve the fulfillment level.Type: GrantFiled: September 24, 2019Date of Patent: October 26, 2021Assignee: Varian Medical Systems International AGInventors: Esa Kuusela, Lauri Halko
-
Patent number: 11000697Abstract: In a method of interactive manipulation of the dose distribution of a radiation treatment plan, after an initial candidate treatment plan has been obtained, a set of clinical goals are transferred into a set of constraints. Each constraint may be expressed in terms of a threshold value for a respective quality index of the dose distribution. The dose distribution can then be modified interactively by modifying the threshold values for the set of constraints. Re-optimization may be performed based on the modified threshold values. A user may assign relative priorities among the set of constraints. When a certain constraint is modified, a re-optimized treatment plan may not violate those constraints that have priorities that are higher than that of the modified constraint, but may violate those constraints that have priorities that are lower than that of the modified constraint.Type: GrantFiled: September 6, 2019Date of Patent: May 11, 2021Assignee: Varian Medical Systems International AGInventors: Esa Kuusela, Edit Siket-Szasz, Marco Lessard, Lauri Halko
-
Publication number: 20200306559Abstract: Cost functions and cost function gradients for use in radiation treatment planning can be computed based on an approximation of an “isodose” surface. Where a clinical goal is expressed by reference to a threshold isodose surface, a corresponding cost function component can be defined directly by reference to that isodose surface, and a corresponding contribution to the cost function gradient can be approximated by identifying voxels that are intersected by the threshold isodose surface and approximating the gradient of the dose distribution within each such voxel.Type: ApplicationFiled: March 29, 2019Publication date: October 1, 2020Applicant: Varian Medical Systems International AGInventors: Esa Kuusela, Hannu Laaksonen, Lauri Halko
-
Publication number: 20200043580Abstract: An apparatus for developing an intensity-modulated radiation therapy treatment plan includes a memory that stores machine instructions and a processor that executes the machine instructions to receive a clinical goal associated with the treatment plan as a user input. The processor further executes the machine instructions to determine a plan objective based on the clinical goal, generate a cost function comprising a term based on the plan objective, and assign an initial value to a parameter associated with the term. The processor also executes the machine instructions to identify a microstate that results in a reduced value associated with the cost function, evaluate a fulfillment level associated with the clinical goal, and adjust the value of the parameter to improve the fulfillment level.Type: ApplicationFiled: September 24, 2019Publication date: February 6, 2020Inventors: Esa KUUSELA, Lauri HALKO
-
Publication number: 20200009401Abstract: In a method of interactive manipulation of the dose distribution of a radiation treatment plan, after an initial candidate treatment plan has been obtained, a set of clinical goals are transferred into a set of constraints. Each constraint may be expressed in terms of a threshold value for a respective quality index of the dose distribution. The dose distribution can then be modified interactively by modifying the threshold values for the set of constraints. Re-optimization may be performed based on the modified threshold values. A user may assign relative priorities among the set of constraints. When a certain constraint is modified, a re-optimized treatment plan may not violate those constraints that have priorities that are higher than that of the modified constraint, but may violate those constraints that have priorities that are lower than that of the modified constraint.Type: ApplicationFiled: September 6, 2019Publication date: January 9, 2020Applicant: Varian Medical Systems International AGInventors: Esa Kuusela, Edit Siket-Szasz, Marco Lessard, Lauri Halko
-
Patent number: 10485988Abstract: In a method of interactive manipulation of the dose distribution of a radiation treatment plan, after an initial candidate treatment plan has been obtained, a set of clinical goals are transferred into a set of constraints. Each constraint may be expressed in terms of a threshold value for a respective quality index of the dose distribution. The dose distribution can then be modified interactively by modifying the threshold values for the set of constraints. Re-optimization may be performed based on the modified threshold values. A user may assign relative priorities among the set of constraints. When a certain constraint is modified, a re-optimized treatment plan may not violate those constraints that have priorities that are higher than that of the modified constraint, but may violate those constraints that have priorities that are lower than that of the modified constraint.Type: GrantFiled: December 30, 2016Date of Patent: November 26, 2019Assignee: Varian Medical Systems International AGInventors: Esa Kuusela, Edit Siket-Szasz, Marco Lessard, Lauri Halko
-
Patent number: 10446265Abstract: An apparatus for developing an intensity-modulated radiation therapy treatment plan includes a memory that stores machine instructions and a processor that executes the machine instructions to receive a clinical goal associated with the treatment plan as a user input. The processor further executes the machine instructions to determine a plan objective based on the clinical goal, generate a cost function comprising a term based on the plan objective, and assign an initial value to a parameter associated with the term. The processor also executes the machine instructions to identify a microstate that results in a reduced value associated with the cost function, evaluate a fulfillment level associated with the clinical goal, and adjust the value of the parameter to improve the fulfillment level.Type: GrantFiled: September 25, 2015Date of Patent: October 15, 2019Assignee: VARIAN MEDICAL SYSTEMS INTERNATIONAL AGInventors: Esa Kuusela, Lauri Halko
-
Publication number: 20190299025Abstract: A prescribing user can designate and prioritize clinical goals that can, in turn, serve as the basis for optimization objectives to guide the development of a radiation treatment plan. The prescribing user can then alter that prioritization of one or more clinical goals and view information regarding changes to fluence-based dose distributions that occur in response to those changes to relative prioritization amongst the clinical goals to thereby understand dosing tradeoffs that correspond to prioritization amongst the clinical goals.Type: ApplicationFiled: March 30, 2018Publication date: October 3, 2019Inventors: Emmi Ruokokoski, Ville Pietilä, Lauri Halko, Jarkko Y. Peltola, Christopher Boylan
-
Patent number: 10402972Abstract: Example methods and systems are provided to perform radiation dose estimation for a target object. In one example, radiation dose estimation may include obtaining projection image data acquired using an imaging system, generating partially reconstructed volume image data based on the projection image data, and generating a partition of the projection image data. The partially reconstructed volume image data may be associated with a first region of a total radiation field. The partition may be associated with a second region of the total radiation field that is located before the first region from a direction of a radiation source. Radiation dose data may be estimated for the target object based on the partially reconstructed volume image data associated with the first region and the partition associated with the second region.Type: GrantFiled: August 4, 2017Date of Patent: September 3, 2019Assignee: VARIAN MEDICAL SYSTEMS INTERNATIONAL AGInventors: Esa Kuusela, Lauri Halko
-
Patent number: 10342994Abstract: One example method for generating a dose estimation model for radiotherapy treatment planning may include obtaining training data that includes multiple treatment plans associated with respective multiple past patients. The method may also include processing the training data to determine, from each of the multiple treatment plans, first data that includes one or more features associated with a particular past patient, second data associated with treatment planning trade-off selected for the particular past patient and third data associated with radiation dose for delivery to the particular past patient. The method may further include generating the dose estimation model by training, based on the first data, second data and third data from the multiple treatment plans, the dose estimation model to estimate a relationship that transforms the first data and second data to the third data.Type: GrantFiled: December 13, 2016Date of Patent: July 9, 2019Assignee: VARIAN MEDICAL SYSTEMS INTERNATIONAL AGInventors: Esa Kuusela, Lauri Halko, María Cordero Marcos
-
Publication number: 20190043187Abstract: Example methods and systems are provided to perform radiation dose estimation for a target object. In one example, radiation dose estimation may include obtaining projection image data acquired using an imaging system, generating partially reconstructed volume image data based on the projection image data, and generating a partition of the projection image data. The partially reconstructed volume image data may be associated with a first region of a total radiation field. The partition may be associated with a second region of the total radiation field that is located before the first region from a direction of a radiation source. Radiation dose data may be estimated for the target object based on the partially reconstructed volume image data associated with the first region and the partition associated with the second region.Type: ApplicationFiled: August 4, 2017Publication date: February 7, 2019Applicant: VARIAN MEDICAL SYSTEMS INTERNATIONAL AGInventors: Esa KUUSELA, Lauri HALKO