Systems and methods for creating hair transplantation procedure sites
Methods and systems are provided for determining the location of procedure sites, for example hair implantation sites, the method and systems enabling a natural looking randomness to be maintained to achieve a desired density while avoiding previously created procedure sites and existing features.
1. A method for automatically selecting a location of a procedure site on a patient, the method comprising:
proposing a candidate procedure site on a patient;
automatically determining, using at least one processor, if a location of the candidate procedure site on the patient and locations of at least two pre-existing or previously proposed sites on the patient positioned within an examination region would represent points on a fitted line and/or form a predefined geometric shape, if such fitted line and/or predefined geometric shape were to be drawn through the locations of the candidate procedure site on the patient and the at least two pre-existing or previously proposed sites on the patient; and
based on the results of the automated determination, either confirming the selected candidate procedure site or automatically modifying, using the at least one processor, the location of the candidate procedure site on the patient, such that the modified location of the candidate procedure site on the patient and the locations of the at least two pre-existing or previously proposed sites on the patient do not represent points on the fitted line and/or form the predefined geometric shape.
2. The method of claim 1 , wherein automatically modifying the location of the candidate procedure site on the patient comprises selecting a new candidate procedure site on the patient or adjusting the location of the selected candidate procedure site on the patient.
3. The method of claim 1 , wherein representing points that form the predefined geometric shape comprises points located within 0.5 mm from a vertices of the predefined geometric shape.
4. The method of claim 1 , further comprising determining one or more of the following: a boundary of a procedure region, the location of the candidate procedure site on the patient, or at least two pre-existing or previously proposed sites on the patient.
5. The method of claim 1 , wherein the fitted line or predefined geometric shape is defined in a 2-D plane or a 3D environment.
6. The method of claim 1 , wherein at least one of the at least two pre-existing or previously proposed sites comprises a hair graft or hair follicle.
7. The method of claim 6 , further comprising determining if the hair graft or hair follicle comprises a terminal hair.
8. The method of claim 1 , wherein the predefined geometric shape comprises an isosceles triangle or an equilateral triangle.
9. The method of claim 1 , wherein automatically modifying comprises offsetting the location of the candidate procedure site on the patient in one or more predetermined directions.
10. The method of claim 1 , wherein automatically modifying comprises offsetting the location of the selected candidate procedure site on the patient by a predetermined distance.
11. The method of claim 10 , wherein the predetermined distance comprises a range of distances.
12. The method of claim 10 , wherein the automatically modifying the location of the candidate procedure site on the patient further comprises:
automatically determining, using the at least one processor, if the modified location of the candidate procedure site on the patient and locations of the at least two pre-existing or previously proposed sites on the patient would represent points on a fitted line and/or form a predefined geometric shape, if the fitted line and/or predefined geometric shape were to be drawn through the locations of the sites; and
based on the results of the automated determination, determining if further offsetting is required such that the locations of the candidate procedure site on the patient and the at least two pre-existing or previously proposed sites on the patient do not represent points on the fitted line and/or form the predefined geometric shape.
13. The method of claim 1 , wherein the at least two pre-existing or previously proposed sites on the patient comprises an implantation site.
14. The method of claim 1 , wherein the procedure site is a hair harvesting site or a hair implantation site.
15. The method of claim 1 , wherein one or more of the location of the candidate procedure site on the patient and the at least two pre-existing or previously proposed sites on the patient is determined in a 2-D plane, and projected onto a 3-D model.
16. The method of claim 1 , wherein the location of the candidate procedure site on the patient is proposed based on one or more additional criteria, the additional criteria comprising being a minimum distance from the pre-existing or previously proposed site on the patient, existence of an exclusion zone, and/or a criteria designed to improve one or more of speed, quality and efficacy of the procedure.
17. A method of selecting a location of a procedure site on a patient, the method comprising:
determining locations of at least two pre-existing or previously proposed sites on a patient within an examination region; and
using a processor to propose a location of a new candidate procedure site on the patient such that the proposed locations of the new candidate procedure site on the patient and the at least two pre-existing or previously proposed sites on the patient do not represent points on a fitted line and/or form a predefined geometric shape, if the fitted line and/or the predefined geometric shape were to be drawn through the locations of the candidate procedure site on the patient and the at least two pre-existing or previously proposed sites on the patient.
18. The method of claim 17 , wherein one or more of the at least two pre-existing sites on the patient comprises pre-existing follicular unit.
19. The method of claim 17 , further comprising repeating the step of proposing a location of a new candidate procedure site on the patient until a desired number of sites on the patient has been proposed in a predetermined region.
20. A method of operating a tool, the method comprising:
determining a location of a proposed procedure site on a patient and at least two other sites on the patient within an examination region;
determining if the location of the proposed procedure site on the patient and the locations of the at least two other sites on the patient form a fitted line with respect to each other;
adjusting the location of the proposed procedure site on the patient such that it does not form the fitted line with the location of the at least two other sites on the patient when the location of the proposed procedure site on the patient and the locations of the at least two other sites on the patient form the fitted line; and
placing a tool at the adjusted location of the proposed procedure site on the patient to perform a procedure on the patient.
21. The method of claim 20 , wherein the tool comprises an implantation site making tool, and the proposed procedure site on the patient comprises a follicular unit implantation site.
22. The method of claim 20 , further comprising placing a tool at the location of the proposed procedure site on the patient to perform a procedure on the patient.
23. A system for selecting a location of a procedure site on a patient, the system comprising:
a user interface including a user input device;
at least one non-transitory storage medium storing instructions, and
one or more modules for executing operations on image data, the one or more modules comprising instructions for:
determining if a location of a candidate procedure site on a patient and locations of at least two pre-existing or previously proposed sites on the patient within an examination region would represent points on a fitted line and/or form a predefined geometric shape; and
based on the results of the determination, either confirming the selected candidate procedure site on the patient or automatically modifying the location of the candidate procedure site on the patient, such that the modified location of the candidate procedure site on the patient and the locations of the at least two pre-existing or previously proposed sites on the patient do not represent points on the fitted line and/or the predefined geometric shape.
24. The system of claim 23 , further comprising one or more modules for executing operations on image data, the one or more modules comprising instructions for selecting the candidate procedure site on the patient.