(12) United States Patent (10) Patent No.: US 9,642,531 B2 Tearney Et Al

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(12) United States Patent (10) Patent No.: US 9,642,531 B2 Tearney Et Al USOO9642531 B2 (12) United States Patent (10) Patent No.: US 9,642,531 B2 Tearney et al. (45) Date of Patent: May 9, 2017 (54) SYSTEMS, METHODS AND (58) Field of Classification Search COMPUTER-ACCESSIBLE MEDIUMWHCH CPC. G01B 9/02091; G02B 27/4205; G02B 6/32: PROVIDE MCROSCOPIC MAGES OF AT A61 B 5/0066: A61 B 5/0044: G06T 5/003 LEAST ONE ANATOMICAL STRUCTUREAT See application file for complete search history. A PARTICULAR RESOLUTION (56) References Cited (71) Applicant: The General Hospital Corporation, U.S. PATENT DOCUMENTS Boston, MA (US) 2,339,754 A 1/1944 Brace (72) Inventors: Guillermo J. Tearney, Cambridge, MA 3,090,753. A 5, 1963 Matuszak et al. (US); Brett Eugene Bouma, Quincy, (Continued) MA (US); Joseph A. Gardecki, Acton, MA (US); Linbo Liu, Cambridge, MA FOREIGN PATENT DOCUMENTS (US) CN 155O2O3 12, 2004 DE 4105221 9, 1991 (73) Assignee: The General Hospital Corporation, Boston, MA (US) (Continued) (*) Notice: Subject to any disclaimer, the term of this OTHER PUBLICATIONS patent is extended or adjusted under 35 Office Action for Japanese Patent Application No. 2012-556286 U.S.C. 154(b) by 53 days. mailed on Sep. 15, 2015. (21) Appl. No.: 14/455,355 (Continued) (22) Filed: Aug. 8, 2014 Primary Examiner — Kara E Geisel Assistant Examiner — Maurice Smith (65) Prior Publication Data (74) Attorney, Agent, or Firm — Andrews Kurth Kenyon US 2015/OO29513 A1 Jan. 29, 2015 LLP (57) ABSTRACT Related U.S. Application Data Exemplary embodiments of systems and methods can be provided which can generate data associated with at least (63) Continuation of application No. 13/042.230, filed on one portion of a sample. For example, at least one first Mar. 7, 2011, now Pat. No. 8,804,126. radiation can be forwarded to the portion through at least one (Continued) optical arrangement. At least one second radiation can be received from the portion which is based on the first radia (51) Int. C. tion. Based on an interaction between the optical arrange G0IB 9/02 (2006.01) ment and the first radiation and/or the second radiation, the A6 IB5/00 (2006.01) optical arrangement can have a first transfer function. Fur GO2B 6/32 (2006.01) ther, it is possible to forward at least one third radiation to (52) U.S. C. the portion through Such optical arrangement (or through CPC .......... A61B 5/0066 (2013.01); A61 B 5/0044 another optical arrangement), and receive at least one fourth (2013.01); A61B 5/0075 (2013.01); radiation from the portion which is based on the third (Continued) (Continued) 570 520 530 550 560 580 500 YaYaNYaYaNYaYa YaxaaSYaYYaYaNYNNSSNSYaNNNa YaYa 510 - smallma sesses SSSSSYYYYYYYY SK)() US 9,642.531 B2 Page 2 radiation. Based on an interaction between the optical 5,065,331 11, 1991 Vachon et al. arrangement (or the other optical arrangement) and the third 5,085,496 2, 1992 Yoshida et al. 5, 120,953 6, 1992 Harris radiation and/or the fourth radiation, the optical arrangement 5,121,983 6, 1992 Lee (or the other optical arrangement) can have a second transfer 5,127,730 7, 1992 Brelje et al. function. The first transfer function can be at least partially 5,177,488 1, 1993 Wang et al. different from the second transfer function. The data can be 5, 197470 3, 1993 Helfer et al. 5,202.745 4, 1993 Sorin et al. generated based on the second and fourth radiations. 5,202,931 4, 1993 Bacus et al. 5,208,651 5, 1993 Buican 10 Claims, 26 Drawing Sheets 5,212,667 5, 1993 Tomlinson et al. 5,214.538 5, 1993 Lobb 5,217.456 6, 1993 Narciso, Jr. 5,228,001 7, 1993 Birge et al. 5,241,364 8, 1993 Kimura et al. Related U.S. Application Data 5,248,876 9, 1993 Kerstens et al. 5,250, 186 10, 1993 Dollinger et al. (60) Provisional application No. 61/311.272, filed on Mar. 5,251,009 10, 1993 Bruno 5, 2010, provisional application No. 61/311,171, filed 5,262,644 11, 1993 Maguire on Mar. 5, 2010. 5,275,594 1, 1994 Baker 5,281,811 1, 1994 Lewis 5,283,795 2, 1994 Fink (52) U.S. Cl. 5,291.885 3, 1994 Taniji et al. CPC ........ A61B 5/0084 (2013.01); G0IB 9/02091 5,293,872 3, 1994 Alfano et al. (2013.01); G02B 6/32 (2013.01) 5,293,873 3, 1994 Fang 5,302,025 4, 1994 Kleinerman (56) References Cited 5,304,173 4, 1994 Kittrell et al. 5,304,810 4, 1994 Amos 5,305,759 4, 1994 Kaneko et al. U.S. PATENT DOCUMENTS 5,317,389 5, 1994 Hochberg et al. 5,318,024 6, 1994 Kittrell et al. 3,601,480 A 8, 1971 Randall 5,321,501 6, 1994 Swanson et al. 3,856,000 A 12/1974 Chikama 5,333,144 T/1994 Liedenbaum et al. 3,872,407 A 3/1975 Hughes 5,348,003 9, 1994 Caro 3,941,121 A 3/1976 Olinger 5,353,790 10, 1994 Jacques et al. 3,973,219 A 8/1976 Tang et al. 5,383,467 1/1995 Auer et al. 3,983,507 A 9/1976 Tang et al. 5,394,235 2, 1995 Takeuchi et al. 4,030,827 A 6/1977 Delhaye et al. 5,400,771 3, 1995 Pirak et al. 4,030,831 A 6, 1977 Gowrinathan 5,404,415 4, 1995 Mori et al. 4,140,364 A 2f1979 Yamashita et al. 5,411,016 5, 1995 Kume et al. 4,141,362 A 2, 1979 Wurster 5,414.509 5, 1995 Veligdan 4,224,929 A 9, 1980 Furihata 5,419,323 5, 1995 Kittrell et al. 4,295,738 A 10, 1981 Meltz et al. 5,424,827 6, 1995 Horwitz et al. 4,300,816 A 11, 1981 Snitzer et al. 5.439,000 8, 1995 Gunderson et al. 4,303,300 A 12/1981 Pressiat et al. 5,441,053 8, 1995 Lodder et al. 4.409,475 A 10/1983 Zehnpfennig 5,450,203 9, 1995 Penkethman 4,428,643 A 1/1984 Kay 5,454,807 10, 1995 Lennox et al. 4,479,499 A 10, 1984 Alfano et al. 5,459,325 10, 1995 Hueton et al. 4,533,247 A 8/1985 Epworth 5,459,570 10, 1995 Swanson et al. 4,585,349 A 4, 1986 Gross et al. 5,465,147 11, 1995 Swanson 4,601,036 A 7/1986 Faxvog et al. 5,479,928 1, 1996 Cathignoal et al. 4,607,622 A 8, 1986 Fritch et al. 5,486,701 1, 1996 Norton et al. 4,631,498 A 12/1986 Cutler 5,491.524 2, 1996 Hellmuth et al. 4,639,999 A 2f1987 Daniele 5,491,552 2, 1996 Knuttel 4,650,327 A 3/1987 Ogi 5,522,004 5, 1996 Djupsjobacka et al. 4,734,578 A 3, 1988 Horikawa 5,526,338 6, 1996 Hasman et al. 4,744,656 A 5, 1988 Moran et al. 5,555,087 9, 1996 Miyagawa et al. 4,751,706 A 6, 1988 Rohde et al. 5,562,100 10, 1996 Kittrell et al. 4,763,977 A 8, 1988 Kawasaki et al. 5,565,983 10, 1996 Barnard et al. 4,770,492 A 9, 1988 Levin et al. 5,565,986 10, 1996 Knittel 4,827,907 A 5, 1989 Tashiro et al. 5,566,267 10, 1996 Neuberger 4,834, 111 A 5, 1989 Khanna et al. 5,583,342 12, 1996 Ichie 4,868,834 A 9, 1989 Fox et al. 5,590,660 1/1997 MacAulay et al. 4,890,901 A 1/1990 Cross, Jr. 5,600,486 2, 1997 Gal et al. 4,892.406 A 1/1990 Waters 5,601,087 2, 1997 Gunderson et al. 4.905,169 A 2f1990 Buican et al. 5,621,519 4, 1997 Frost et al. 4.909,631 A 3, 1990 Tan et al. 5,621,830 4, 1997 Lucey et al. 4,925.302 A 5, 1990 Cutler 5,623,336 4, 1997 Raab et al. 4,928,005 A 5, 1990 Lefevre et al. 5,628,313 5, 1997 Webster et al. 4,940,328 A 7, 1990 Hartman 6, 1997 Itoh 4,965,441 A 10, 1990 Picard 5,635,830 4,965,599 A 10/1990 Roddy et al. 5,649,924 7/1997 Everett et al. 4,966,589 A 10, 1990 Kaufman 5,697,373 12, 1997 Richards-Kortum et al. 4,984.888 A 1/1991 Tobias et al. 5,698.397 12, 1997 Zarling et al. 4,993,834 A 2f1991 Carlhoff et al. 5,701,155 12, 1997 Wood et al. 4,998.972 A 3, 1991 Chin et al. 5,710,630 1, 1998 Essenpreis et al. 5,039,193 A 8, 1991 Snow et al. 5,716,324 2, 1998 Toida 5,040,889 A 8, 1991 Keane 5,719,399 2, 1998 Alfano et al. 5,045,936 A 9, 1991 Lobb et al. 5,730,731 3, 1998 Mollenauer et al. 5,046,501 A 9/1991 Crilly 5,735,276 4, 1998 Lemelson US 9,642.531 B2 Page 3 (56) References Cited 6,141,577 10, 2000 Rolland et al. 6,151,522 11/2000 Alfano et al. U.S. PATENT DOCUMENTS 6,159,445 12, 2000 Klaveness et al. 6, 160,826 12, 2000 Swanson et al.
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