The success of the 2001 Annual Meeting of the AAPM is always due to the efforts of many people who have dedicated themselves over the past months to the development of a superior scientific and educational program for the members of the Society. On behalf of the Scientific Program Director, Eric Klein, M.S., the Scientific Program Co-Director, Andrew Maidment, Ph.D., the Education Program Director, Bob Gould, Sc.D., and the Local Arrangements Committee Chair, Grant Gullberg, Ph.D., I would like to offer our thanks to the many people who have contributed to the program and to the success of this year's meeting in Salt Lake City.

In addition, I would like to extend our thanks to the Abstract Reviewers, Invited Speakers, Symposia Moderators, Session Chairs, Continuing Education Course Directors, and members of the Local Arrangements Committee for their contributions towards a successful and informative meeting. The Headquarters staff helps in all aspects of the meeting from processing abstracts to making sure that the arrangements with the hosting cities are properly completed so that those of us who attend will have the best possible environment to learn and visit with our colleagues. Their contributions are considerable and very much appreciated.

David R. Pickens, Ph.D.
Program Committee Chairman

John Antolak, Samuel Armato, James Balter, John Bayouth, Stanley Benedict, Peter Biggs, John Boone, J. Daniel Bourland, Arthur Boyer, Heang-Ping Chan, Sha Chang, Chee-Wai Cheng, James Chu, Chen-Shou Chui, Virgil Cooper, Bruce Curran, Indra Das, Julie Dawson, Joseph Deasy, James Dempsey, Robert Drzymala, Gary Ezzell, Brian Fowlkes, Tim Fox, Benedick Fraass, James Galvin, Bruce Gerbi, John Gibbons, Maryellen Giger, Mitchell Goodsitt, Nick Hangiandreou, William Harms, John Hazle, Michael Herman, Fred Hetzel, Kenneth Hoffman, Walter Huda, Margie Hunt, Zhimin Huo, M. Saiful Huq, Edward Jackson, David Jaffray, Steve Jiang, Leigh Johnson, Andrew Karellas, Marc Kessler, Eric Klein, Robert Kline, Frank Korosec, H. Dale Kubo, Zuofeng Li, Eugene Lief, Hui Helen Liu, Chihray Liu, Thomas LoSasso, Daniel Low, Chang-Ming Charlie Ma, Mark Madsen, Gikas Mageras, Mary Martel, David Mellenberg, Ken Miller, Janelle Molloy, Mary Moore, Jean Marie Moran, Eduardo Moros, Michael Moyers, Bob Mulkern, Sasa Mutic, Bob Nishikawa, Xiaochuan Pan, Mike Patterson, Robert Peters, Mark Phillips, Chester Ramsey, Chester Reft, Mark Rivard, Don Robinson, Cheng Saw, Beth Schueler, Almon Shiu, Jeffrey Siebers, Katharina Sixel, Al Smith, Jason Sohn, Timothy Solberg, Marc Sontag, Jean St. Germain, Greg Stanisz, George Starkschall, David Steidley, Robin Stern, Randall Ten Haken, Charles Tenney, Bruce Thomadsen, Lynn Verhey, Mark Williams, Lei Xing, Martin Yaffe, Di Yan, Michael Yester, Fang-Fang Yin, Ellen Yorke, Yan Yu, Ning Yue, Timothy Zhu

John Antolak, James Balter, John Bayouth, J. Daniel Bourland, Arthur Boyer, Dev Prasad Chakraborty, Sha Chang, Chee-Wai Cheng, James Chu, Chen-Shou Chui, Charles Coffey, Bert Coursey, Bruce Curran, Indra Das, Joseph Deasy, James Dempsey, Tim Fox, Benedick Fraass, Maryellen Giger, Michael Gillin, Mitchell Goodsitt, John Hazel, M. Saiful Huq, Edward Jackson, David Jaffray, Steve Jiang, Philip Judy, Andrew Karellas, Marc Kessler, Eric Klein, H. Dale Kubo, Dennis Leavitt, Zuofeng Li, Eugene Lief, Daniel Low, Zhengfeng Lu, Chang-Ming Charlie Ma, Janelle Molloy, Jean Marie Moran, Eduardo Moros, Michael Moyers, Peter Munro, Mark Phillips, Chester Ramsey, Ehsan Samie, Cheng Saw, Beth Schueler, Jeffrey Siebers, Jason Sohn, Timothy Solberg, David Steidley, Robin Stern, Randall Ten Haken, Bruce Thomadsen, Jerry Thomas, Lynn Verhey, Martin Weinhous, Charles Wilson, Martin Yaffe, Lei Xing, Di Yan, Fang-Fang Yin, Ellen Yorke, Yan Yu, Ning Jeff Yue, Timothy Zhu

Joseph Blechinger, Robert Gould, James Kofler, Daniel Low, Ravinder Nath, Joseph Och, Michael Yester

Peter Almond, Larry Antonuk, Stephen Balter, Peter Biggs, J. Daniel Bourland, Arthur Boyer, Samuel Brain, James Carey, Paul Carson, Kish Chakrabarti, Chee-Wai Cheng, Chen-Shou Chui, Rolf Clackdoyle, Geoffrey Clarke, David Clunie, Bert Coursey, Indra Das, Michael Davis, Donna Dean, Larry DeWerd, James Dobbins, Dennis Duggan, Aaron Fenster, Michael Flynn, David Followill, Timothy Fox, Eugene Frank, Claudia Galbo, James Galvin, Bruce Gerbi, John Gibbons, Maryellen Giger, Michael Gillin, Eric Gingold, Robert Gould, L. Stephen Graham, David Hearshen, Michael Herman, Edward Jackson, Shirish Jani, Philip Judy, Charles Kelsey, Marc Kessler, James Kofler, Randell Kruger, Tom Lewellen, C. Clifton Ling, Daniel Low, Chang-Ming Charlie Ma, Thomas Mackie, Jeff Masten, Richard Morin, David Campbell Murray, Sasa Mutic, Ravinder Nath, Michael Neumann, Frederic Noo, Jatinder Palta, Dennis Parker, James Patton, Robert Pizzutiello, Mack Roach, III, Donald Robinson, James Rodgers, David W.O. Rogers, Ehsan Samei, Russell Schonberg, J. Anthony Seibert, Stephen Michael Seltzer, Hans Sethi, Paul Strudler, Bruce Thomadsen, Jerry Thomas, Jake Van Dyk, Michael Vannier, Lynn Verhey, Robert Wagner, Barry Wessels, James Whiting, Pam Wilcox, Mark Williams, Jeffrey Williamson, Charles Wilson, Lei Xing, Martin Yaffe, Ning Yue, James Zagzebski

The numbering scheme encodes the day and time block into the abstract number. For example, for an abstract/presentation numbered as TU - D - BRA - 5, the TU corresponds to the day of the week (of SU, MO, TU, WE, TH), the D corresponds to the time block (of A, B, C, D, or E), and the BRA represents the location (Ballroom A, Ballroom B, 150A, 250 A, 250D, 251A). This is shown in the figure below:

The organization for each day (Monday - Wednesday) is shown in the table below: Times vary on Sunday and Thursday.

This scheme (above) is used throughout the meeting, except on Sunday. There are two one-hour blocks in the morning used for refresher and/or continuing education courses, Blocks A and B. Blocks C and D correspond primarily to the scientific sessions (for oral presentations), however there is an occasional continuing education course or symposium in these time blocks as well. Block E is reserved primarily for the afternoon symposia, however occasionally scientific sessions may be in these time blocks as well. In general, therapy related sessions have been assigned to Ballrooms A and B and Room 150 A; diagnostic imaging related sessions have been assigned to Rooms 250 A, 250 D and 251A.

Poster sessions are laid out spatially, not temporally like the oral presentations. Poster boards are marked with the abstract identifier for all presentations which are required to be displayed in the designated poster area of the exhibit hall.

The organization of the abstract numbering is meant to improve the efficiency of finding one's way around the meeting. This will only be true if the attendees are aware of the rationale for, and how to use, the numbering scheme.

AAPM has applied to the Commission on Accreditation of Medical Physics Education Programs (CAMPEP) for accreditation of the 2001 Annual Meeting. For each hour of verified attendance (this includes scientific sessions, poster sessions, symposia, professional and educational courses), 1 MPCEC hour of credit will be awarded. After the meeting, registrants will be sent a transcript that lists a description of the sessions and the number of continuing education credits obtained.

All Poster Sessions will be held on Sunday, July 22 from 1:00 PM - 5:00 PM with the exception of Therapy Works in Progress Posters, to be held Wednesday, July 25 from 12:00 PM - 1:30 PM.