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Welcome to the Particles NewsLetter
Number 18 July 1996 Editor: Janet Sisterson Ph.D., HCL


  • Introduction
  • Articles for Particles 19
  • PTCOG Steering Committee
  • PTCOG Chairman & Secretary
  • Questions About PTCOG?
  • Future PTCOG Meetings
  • Abstracts for PTCOG XXV
  • PTCOG XXV Meeting at PSI & CERN
  • World Congress on Medical Physics and Biomedical Engineering
  • Proposed New Facilities
  • World Wide Patient Totals
  • HCL HomePage


    • Note:
        This http version is currently missing the graphics that are on the original. Please try using the MS Word copy to save/print a paper copy locally.

    • Mailing Lists:
        PLEASE help to keep the Particles mailing list up-to-date by sending me address, telephone number, fax number and e-mail additions/corrections. Please try our GuestBook
    • Costs:
        At PTCOG XIX, the Steering Committee decided that part of the registration fee for PTCOG meetings would be used to help produce both Particles and the abstracts of the PTCOG meetings. Only part of the costs are covered in this way, so more financial help is needed from the community. HCL is always happy to receive financial gifts; all such gifts are deductible as charitable contributions for federal income tax purposes. The appropriate method is to send a check made out to the “Harvard Cyclotron Laboratory”. We thank Steven Goetsch Ph.D. of the San Diego Gamma Knife Center for his generous contribution which we have used to cover some of the costs of producing this issue of Particles.
    • Facility and Patient Statistics:
        I am still collecting information about all operating and proposed facilities, regarding patient statistics, machine scheduling, and treatment characteristics. Please send me up-to-date information.
    • Particles on the Internet:
    • E-mail address Directory:
        I do have many e-mail addresses, but not enough to make a formal directory. Please remember that you can use the World Wide Web to find e-mail addresses, telephone numbers etc.

        So, PLEASE send me your e-mail addresses our try our GuestBook.

      The deadline for news for Particles 19, the January 1997 issue, is November 30 1996. I will send reminders by fax or e-mail.

        Address all correspondence for the newsletter to:
        Janet Sisterson Ph. D.
        Harvard Cyclotron Laboratory
        Cambridge, MA 02138
        Telephone: (617) 495-2885
        Fax: (617) 495–8054
        44 Oxford Street
        E-mail: sisterson@huhepl.harvard,edu
      Articles for the newsletter can be short but should NOT exceed two pages in length. I DO need a good clean copy of your article and figures as I am using a scanner to get everything into the computer. If you FAX me an article, please send a good copy by mail. PLEASE, if you can send me your articles by computer; much simpler for me.


      The results of the election of the Steering Committee of PTCOG were announced at the Detroit PTCOG meeting. The following members were elected to the Steering Committee :
      USA		Europe		Russia		Japan		South Africa
      J. Castro	U. Amaldi	V.Khoroshkov	K. Kawachi	D. Jones
      W. Chu		H. Blattmann			H. Tsujii
      M. Goitein	J.-L. Habrand
      D. Miller	G. Munkel
      J. Sisterson	E. Pedroni
      James Slater	A. Wambersie
      A. Smith
      L. Verhey
      The new Chairman and Secretary of PTCOG elected by the Steering Committee are:

        Chairman: M. Goitein
        Secretary: J. Sisterson

      If you have questions about PTCOG, please contact the secretary of PTCOG by one the means listed previously in this newsletter.


      If you have questions about PTCOG, please contact the secretary of PTCOG:
        Janet Sisterson,
        Harvard University
        44 Oxford Street
        Cambridge, MA 02138
        Telephone: (617) 495-2885
        Fax: (617) 495–8054
      The times and locations of the next PTCOG meetings are as follows:-
      PTCOG XXV	PSI, SwitzerlandCERN, Switzerland	September 9-10 1996September 12-13 1996
      PTCOG XXVI	Boston, Massachusetts USA		Spring 1997, possibly April 30 - May 2
      PTCOG XXVII	Chiba, Japan				Fall 1997
      PTCOG XXVIII	Loma Linda, CA USA			Spring 1998
      PTCOG XXIX	Europe					Fall 1998
    Abstracts for PTCOG XXV at PSI

      Authors are encouraged to submit an abstract of their talk, which will be published with the January 1997 issue of Particles.

      Abstracts will be collected at the meeting or they can be sent directly to Janet Sisterson by one of the methods listed above in “articles for Particles”. THE VERY BEST WAY is by e-mail.

      See details in the next section.

      The ideal space allocated for each abstract is ONE HALF page; PLEASE try and keep to this length. DO NOT EXCEED one page. Please do not use a small typeface. Each abstract must have a title and a list of authors with addresses; graphs and line drawings are welcome.

    Second International Symposium on Hadron Therapy
    September 9 - 13, 1996
    at PSI and CERN.

        Monday, September 9th
          Isocentric Beam Delivery Systems (excluding details of scanning);
          Safety, Control and Dose Monitoring Systems for Scanned Beams;
          Proffered Papers Physics;
          (Session with invited speakers and audience discussion) Patenting of New Technologies; Tour of the Facility in parallel with: Workshop for centers actively involved in the comparative treatment planning of the nasopharynx case;
        Tuesday, September 10th
          Proton Irradiation of Ocular Lesions - Clinic, Physics and Biology;
          Clinical Trials with Protons - Trial Design, PROG Summary;
          PTCOG Business Meeting;
          Clinical Trials contd. - Lessons from EORTC, Programs of the Proton Users Group - PUG; Proffered Papers: Experimental Tumor Therapy and Radiobiology;
          Tour of the Facility and the Social Event;
        Wednesday, September 11th
          Comparative Treatment Planning (Report on the Monday-workshop and with discussion); Poster Presentation;
          Proffered Papers - Clinical;
          A session programmed by EORTC;


        Thursday, September 12
          Welcome addresses
          Invited talks:
            Status and future directions of tumor therapy;
            Clinical programs: a review of past and existing hadrontherapy protocols, their results and future perspectives;
            Impact of modern radiobiology on clinical radiotherapy; What radiobiology should be done in a hadron therapy center?;
            The role of animals in cancer research;
            Boron neutron capture therapy: a review of the Zurich meeting;
            Technology of hadron therapy: a review of existing technologies, their plusses and minuses Round table: Discussion of the latter topic
            Inauguration of the exhibition Hadrons for Health
            Conference dinner

        Friday, September 13

          Invited talks:
            Advances in computing in the short and long term;
            The invention and developments of WWW;
            Medical applications of networks;
            Clinical trials and ethical issues in cancer research;
            Advances in large and precise mechanical structures (CERN);
            Recent developments in radiation detectors and beam position monitors;
            Proffered papers: patient alignment;
            Poster session on hadron therapy;

            Invited talks:

              Concluding remarks


        Deadline for the announcement of presentations is August 10, 1996. The abstracts of the presentations at the PSI part of the conference and of the posters will be published - as usual one half page - in PARTICLES, the PTCOG newsletter, which appears twice yearly and is edited by Janet Sisterson from the Harvard Cyclotron Laboratory. The most convenient way to submit these abstracts is e-mail to Janet Sisterson and PSI. Status reports will be presented on posters only. Should the amount of announced oral contributions exceed the time frame of the session, the scientific committee will decide upon oral presentation or poster presentation and inform the author(s) by August 23, 1996. All invited papers for the CERN part of the symposium will be published in a volume, as announced in the first bulletin. Authors of short presentations and posters (PSI part) may also submit an extended text for the volume.


        For the PSI part of the meeting, blocks of rooms have been reserved in several hotels in Brugg (closest to PSI), Baden (resort town) and Regensdorf, with special rates for participants. September is high season in this lovely area with thermal spas, you should bring swimsuits.

        For the CERN part of the meeting, blocks of rooms have been reserved in two Movenpick hotels and in the CERN foyer.

        Please make your reservation with the hotels directly, mentioning the block name HADRON 96. Hotel rooms will be held until August 14 at the special rates. Book early! There are only a limited number of rooms and it is high season.

      Hotels: PSI part of the Symposium

        A block of rooms has been reserved for the SECOND INTERNATIONAL SYMPOSIUM ON HADRONTHERAPY at the Movenpick Hotel in Regensdorf and several hotels in Baden and Brugg (see general information). Transportation between the hotels and PSI, Villigen, is provided.

        The rooms are being held at a special rate. Your reservation must be received by the hotels no later than August 14th, 1996 to qualify for the special rate. The reduced rates are limited by room availability, and therefore it is advisable to make your reservations as soon as possible. Conference participants should contact the hotels directly to make their reservations by mentioning the blockname Hadron 96 !

        Movenpick Hotel available during your stay at PSI, Villigen:

          Movenpick Hotel Zurich-Regensdorf
          8105 Regensdorf
          Tel. ++41/(0)1 871 51 11
          Fax ++41(0)1 871 50 11
          Room rates: single and double 165 CHF, breakfast 16 CHF

        Other hotels provided during your stay at PSI, Villigen: Breakfast is included in all these hotels

        Hotel Du Parc			Hotel Linde
        Romerstrasse 24, 5400 Baden	Mellingerstrasse 22, 5400 Baden
        Tel. ++41 (0)56 221 03 11	Tel. ++41 (0)56 222 53 85
        Fax ++41 (0)56 222 07 93	Fax ++41 (0)56 222 07 70
        Single: 195 CHF Double: 280 CHF	Single: 148 CHF Double: 195 CHF
        Hotel Schweizerhof		Hotel Kappelerhof
        Kurplatz 3, 5400 Baden		Bruggerstrasse 142, 5400 Baden
        Tel. ++41 (0)56 221 03 25	Tel. ++41 (0)56 222 38 34
        Fax ++41 (0)56 221 58 04	Fax ++41 (0)56 222 55 32
        Single: 115 CHF Double: 190 CHF	Single: 125 CHF
        				rate held until July 31st only
        Hotel Verenahof			Hotel Hirschen
        Kurplatz 1, 5400 Baden		Badstrasse 22, 5400 Baden
        Tel. ++41 (0)56 203 93 93	Tel. ++41 (0)56 222 69 66
        Fax ++41 (0)56 203 93 94	Fax: - 
        Single: 140 CHF Double: 115 CHF Room with basen: 46 CHF
        Hotel Terminus
        Bahnhofplatz 1, 5200 Brugg
        Tel. ++41 (0)56 441 18 21
        Fax ++41 (0)56 441 82 20
        Single: 95 CHF Double: 155 CHF

      Movenpick Hotels: CERN part of the Symposium
        A block of rooms has been reserved for the SECOND INTERNATIONAL SYMPOSIUM ON HADRON THERAPY at the Movenpick Hotels in Geneva. Transportation between the hotels and CERN is provided.

        The rooms are being held at a special rate. Your reservation must be received by the hotel no later than August 14th, 1996 to qualify for the special rate. The reduced rate is limited by room availability and, therefore, it is advisable to make your reservations as soon as possible. Conference participants should contact the hotels directly to make their reservations by mentioning the blockname Hadron 96 ! In both Movenpick Hotels cancellation of the reservation without penalty must be made at the latest 48 hours before the expected arrival.

        Hotel Movenpick Cadett		Hotel Movenpick Radisson
        Mategnin, 21, 			Route Pre-Bois 20
        1217 Meyrin (Geneve)		1215 Geneve 15
        Tel. ++41/(0)22 989 90 00	Tel. ++41/(0)22 798 75 75
        Fax ++41/(0)22 989 99 99	Fax ++41/(0)22 791 02 84
        single & double 115 CHF,	single and double 170 CHF,
        breakfast 19 CHF		breakfast 24 CHF

        Another possibility to stay at CERN in Geneva

        CERN Foyer 1221 Geneve 23 Tel. ++41(0)22 767 41 55 Fax ++41(0)22 767 38 00 Please mention here the blockname AMALDI! Reservations should be made at the earliest, as it is holiday period. Room rate: 51 CHF


        To hotels (PSI): The Hotel Terminus in Brugg is situated right opposite the Brugg train station. The enclosed brochure “How to get to the Paul Scherrer Institute” describes the way to the institute by airplane, train and car - and includes information on getting to Brugg. If you stay in one of the hotels in Baden, you take the same trains from the airport (or from other places via Zurich) as for getting to Brugg; just get off the train one stop earlier. There is a shuttle service between the airport Zurich - Kloten and the Movenpick Hotel in Regensdorf.

        From hotels to PSI: There will be bus transportation from all hotels to PSI. Detailed information will be available on your arrival at the hotel desk. In addition, for the Hotel Terminus, the postal bus leaves from right opposite the hotel and takes you right in front of the conference building at PSI. Time schedules are available at the hotel desk.

        To hotels (CERN): Hotel shuttle minibuses (marked Movenpick) are available between the Geneva - Cointrin airport and both Movenpick Hotels. If you arrive by train, you should go to the train station in the airport, and then use the minibuses to the hotels. Coming by car, head for the Geneva - Cointrin airport via the highway N1 / E4 or one of the well maintained country roads. All Swiss maps will guide you there safely.

        From hotels to CERN: There will be bus transportation from the hotels to CERN. By bus between PSI and CERN: Will be provided (with an additional charge) for participants who are attending both parts of the meeting, and companions.

        The registration fees include coffee, lunches, transportation between hotels and the conference places, the social event and dinner on Tuesday evening (incl. bus) and the dinner and bus for participants on Thursday evening. Not included in the registration fee(s) are: the conference dinner(s) for guests, and the bus transportation from PSI to CERN on Wednesday. If you have already registered, and wish to bring a guest to any of the social events /conference dinners, please let the secretariat know by August 20, 1996. Please read the registration form and payment information carefully! The registration fees are different for the entire Hadron Symposium and for only one part of the meeting. If you decide to pay at the registration desk, please bring cash or traveler cheques. No credit cards or personal cheques can be accepted, Sorry!

      Social events and conference dinners:
        On Tuesday, a visit to the Landvogteischloss in Baden will begin the social part of the conference at PSI. The Landvogteischloss is a local museum for the history of the region from Roman to modern times. After the aperitif and a short presentation (in English) about the exposition you will have an opportunity to visit the museum. A dinner will follow at the Movenpick Hotel in Regensdorf, with bus transportation provided. The conference dinner during the CERN part of the symposium will take place at the Movenpick Hotel Cadett in Geneva - Meyrin. On Saturday morning a tour of CERN, and of the DELPHI experiment in particular, is planned. Participation forms will be handed out on site.

    Nice, France, September 14 - 19 1997

      From 14 - 19 September 1997, the WORLD CONGRESS ON MEDICAL PHYSICS AND BIOMEDICAL ENGINEERING will take place in Nice on the French Riveria.

      After Kyoto (1991) and Rio (1994), it will provide an unique opportunity for scientific exchanges and discussions on various topics of interest for all those involved in “Particle therapy”.

        Jean-Claude ROSENWALD
        Co-chair for the Scientific Committee

      • For information about the meeting:
          NICE’ 97 - SEE
          48, rue de la Procession
          F75724 PARIS CEDEX 15 - FRANCE
          Phone: 	+ 33 1 44 49 60 60
          Fax:	+ 33 1 44 49 60 44

      • For Scientific contacts on “protons, neutrons and heavy ions in radiotherapy”
          Alejandro MAZAL
          Centre de Protontherapie d’Orsay, BP. 65
          91402 ORSAY CEDEX - FRANCE
          Phone:	+ 33 1 69 29 87 00
          Fax:	+ 33 1 69 07 55 00

    PTCOG News: The following reports were received by July 1996.

      Status report: The Northeast Proton Therapy Center, at Massachusetts General Hospital, Boston, MA USA:

        The Northeast Proton Therapy Center (NPTC) continues to be essentially on schedule and without changes in the overall budget. Some time was lost during the winter due to the discovery, and subsequent extraction, of a large number of old wood piles in locations where concrete piles were to be driven. Several large concrete caissons were also uncovered on the construction site and had to be removed. The building is scheduled for completion in January, 1997 at which time we will begin the installation of equipment. Some personnel will move into the building at that time.

        The second isocentric gantry was procured in January of 1996. The shipping, assembly, and installation reviews of the cyclotron, energy selection system, beam transport system, gantries, nozzles, and patient positioner system are scheduled for December, 1996. The cyclotron and energy selection system are scheduled to arrive at MGH in February, 1997 while the beam transport system will arrive March-May. The first gantry will be delivered in April and the second will arrive in May. The NPTC control and safety systems will be installed in the summer of 1997 and the patient positioning systems will be installed in the Fall.

        We plan for the NPTC systems acceptance tests to be completed in February, 1998 after which the clinical commissioning of all systems will commence. Patient treatments are scheduled to begin in the early Fall, 1998.

          Alfred Smith, The Northeast Proton Therapy Center, Massachusetts General Hospital, Boston, MA 02114, USA.

      Clinical Trials Update: Proton Radiation Oncology Group (PROG)

        PROG’s goal is to provide a centralized research base, not available elsewhere, for clinical trials employing proton therapy. PROG has been funded by the National Cancer Institute-U.S. to: a) undertake clinical trials and other related studies to assess the extent of the gain and the cost of that gain achieved by use of proton beams in the treatment of the cancer patient, b) improve the control of primary and regional malignant disease by use of proton beam radiation therapy and to the study patterns of failure, c) coordinate the scientific activities of group members and committees and to foster the design and implementation of protocols within a unified research program, and to d) collaborate with clinical investigators on statistical and scientific aspects of planning new studies and to prepare interim statistical reports for each ongoing study.

        Loma Linda University Medical Center and Massachusetts General Hospital are actively accruing patients to PROG studies. In addition, there is committed growth in PROG membership by proton beam therapy centers abroad. The medical directors at four foreign proton therapy treatment centers have written to indicate interest in participating in PROG studies; these include: Paul Sherrer Institut, Switzerland; the National Accelerator Centre, South Africa; Centre de Protontherapie, Orsay; and the University of Tsukuba, Japan. This substantial increment in the number of participants is anticipated to more than double the current accession rate. PROG statisticians review all study designs regardless of phase to ensure they are appropriate to the scientific question posed. All accruing studies are monitored on a semi-annual basis to identify and resolve any problems. Analyses performed by the statisticians produce results that become the basis for presentations at medical meetings and publications in refereed journals. The statisticians have collaborated with the investigators on the publication of 19 manuscripts and 4 abstracts.

        Current Studies:

        • PROG 85-26 Phase I/II Randomized Study of Charged Particle Radiation in the Treatment of Chordomas of Low Grade Chondrosarcomas of the Base of Skull or Cervical Spine (Munzenrider)opened: 2/9/87, accrual as of 6/1/96: 261
        • PROG 92-13 Prospective Study of Patients with Recurrent or Incompletely Excised Benign Intracranial Meningiomas for the Evaluation of Treatment Results with Combined Proton & Photon Irradiation to Doses of 55.8 or 63.0 CGE (Munzenrider) opened: 8/1/94, accrual as of 6/1/96: 10
        • PROG 92-14 Phase I/II Study Employing Proton Therapy for the Treatment of Squamous Cell Carcinoma of the Oropharynx (Slater)opened: 10/1/93, accrual as of 6/1/96: 7
        • PROG 92-15 Phase I/II Study of Hyperfractionated, Accelerated Radiation Therapy for Advanced Paranasal Sinus Carcinoma Employing Combined Proton and Photon Irradiation (Thornton)opened: 10/1/93, current accrual as of 6/1/96: 1
        • PROG 95-09 Phase III Trial Employing Conformal Photons with Proton Boost in Early Stage Prostate Cancer: Conventional Dose Compared to High Dose Irradiation (Zietman) opened: 1/31/96, current accrual as of 6/1/96: 27

        Treatment protocols will be developed for tumors in pediatric patients; carcinomas of several head and neck sites; carcinomas of the rectum/recto-sigmoid; sarcomas of the soft tissues of the retroperitoneum; carcinoma of the uterine cervix; non small cell lung cancer, carcinoma of the urinary bladder, stage 3; malignancies of the biliary duct; hepatic malignancy, and for patients with intracranial arteriovenous malformations. Presentations on the prostate protocol and the importance of a centralized statistical data base will be made at the Fall PTCOG meeting. Information regarding PROG is available from:

          Elaine Pakuris, PROG Project Administrator, ACR, 1101 Market Street, Philadelphia, PA 19107, 215-574-3195, FAX 215-928-0153, e-mail

      Heavy Ion Therapy at GSI, Darmstadt, Germany:

        The medical annex has been constructed and furnished this winter. Commissioning of the medical beam line and the new rasterscan is continued using a prototype control system. The final system combining the scanner control and safety inputs as for instance the fast position sensitive counters and other safety controls is not yet ready. This delay is mainly due to the complexity of the safety and control system and the integration of components that have been tested as single prototypes only.

        Another important safety equipment, the PET camera developed by the FZR Dresden has been installed and tested with carbon beams scanned to various 3-D volumes into plastic or gel-targets. Figure 1 shows the results of a PET reprojection of 14 spills produced by the irradiation with 12C ions of 108 particles in total. From this and further experiments it is evident that the critical spots of the treatment field can be tested with a low intensity beam before main treatment starts.

        Figure 1. PET image of the scanned irradiation of a plastic block with carbon ions.

        Good progress has been made also in the commissioning of the accelerator. For raster scanning the accelerator settings have to be changed from pulse to pulse (i.e. within 2 seconds). For the treatment of one fraction, up to 60 different energies out of a set of 255 virtual energies can be combined with one spot size out of 4 between 4 and 10 in diameter and with one beam intensity of 10 between 5 x 106 and 1 x 108 particles/sec. The energy and intensity variation from pulse to pulse has been tested successfully including the beam transport to the cave.

        In order to ensure a correct dose, a dosimetry comparison with Loma Linda and Chiba has been carried out from the DKFZ group Heidelberg and yielded satisfactory results. Large progress has been made in treatment planning. A code, called TRIP developed at GSI has been completed and integrated into the Voxelplan system of DKFZ. TRIP is a biology oriented planning system that optimizes first the physical dose distribution and uses this distribution as input for a second, more elaborate biological optimization procedure. In this code, the various dose distributions originating from particles of different atomic numbers and energies are known for each volume element. Therefore, the local RBE values have to be calculated according to its composition using a new model developed recently at GSI. In this way inhomogeneous RBE distribution can be combined with the appropriate physical dose in order to achieve the desired biological effect.

        The treatment planning system TRIP has been used for a fractionated treatment of minipigs where three skin fields have been exposed with graded doses of carbon ions and three with x-rays. The results showed that the theoretical RBE values for early effects are correct within the error of the experiment. This minipig experiment has been performed in collaboration with the TU and FZR both at Dresden. Another animal experiment irradiating Ehrlich Ascites tumor cells in mice has been performed in cooperation with the Radiological Institute of the University of Frankfurt and is now being analyzed. This and other biology experiments will be reported later.

        On the administrative side, the safety report and the request for approval have been finalized and submitted to the government. There, an expert commission has been formed that will visit GSI in June and start its review process necessary for legal approval.

        In general, the project in presently delayed by 4 - 6 months compared to the original plan from 1992 and the treatment of the first patient cannot be scheduled before the end of 1996.

          G. Kraft, GSI mbH, Planckstrasse 1, D-64291 Darmstadt, Germany.

      News from ITEP, Moscow, Russia:

        In recent years, two treatment rooms have been functioning at ITEP PTF (intracranial irradiation in supine position , eye irradiation and other targets in seated position). About 150 patients are irradiated per year. Prostate and gynaecological irradiations have been temporarily suspended. Within the framework of the H-minus TEST experimental programme (acceleration of H-minus ions in ITEP synchrotron), a new fourth channel is under construction for the external proton beam of up to 200 MeV energy. The objective is the parameters study of the proton beam obtained by recharge of H-minus ions, and its suitability for modern proton dose delivery - GANTRY and 3D scanning systems.

        V. Khoroshkov, ITEP, B. Cheremushkinskaya 25, Moscow 117259, Russia.

      Proton Treatment Facility at the National Cancer Center Hospital East, Kashiwa, Japan:

        National Cancer Center, Japan had determined to build a dedicated proton treatment facility, and obtained the national funds in 1995. We had made clinical and technical requirements of the equipment. Because it was an international competitive bidding, the selection of the vendor was carried out by the process of total evaluation of the technical scores and the cost.

        The facility will be build at its' Kashiwa campus which is some 30 km from its' Tokyo campus. It will be connected with the National Cancer Center Hospital East (NCCHE) by a passage.

        The Equipment: Three vendors submitted their proposals (two for synchrotrons, and one for cyclotron), finally, Sumitomo Heavy Industries Ltd. (SHI) was selected as a main contractor of the equipment in March 1996. Details of each part is now under discussion. What we determined up to now is as follows;

        Accelerator will be a 235 MeV cyclotron. There will be three treatment rooms, two with isocentric gantries and one with fixed horizontal beam. Double scatterer or Wobbler scanning will be used initially as a beam spreading system. Active scanning method will be a future plan. Maximum diameter of the fields will be 30 cm at the gantries and 10 cm at the horizontal beam. Patient positioning system (couch) will rotate isocentrically, move horizontal, lateral, vertical and also it will roll (up to 5 degrees) to adjust the patient's position. For the fixed horizontal beam, a chair will be used. We are going to use real time digital fluoroscopic radiography (DR) system for verifying patient's position. Respiration gating system will be introduced to the two gantries. A dedicated helical CT scanner, an X-ray simulator and a MRI unit will be introduced for treatment planning and evaluation.

        The Building: Tokyu Construction Co. was selected as a main contractor of the building in March 1996. The building will provide approximately 4700 net square meter, and will have three floors (Figure 1. The building seen from the south-west side. Existing NCCHE can be seen in the left side).

        The ground level will be a treatment floor, which include cyclotron, beam transport lines, control rooms and three treatment rooms (Figure 2). Part of the gantries extend below the floor. The 2nd. level will contain accelerator main control room and bolus & collimator shop. The 3rd. level is a diagnosis and planning floor. All the diagnostic and treatment planning equipment will be introduced into the floor. Also on this level will be consultation and education rooms, computer and physics rooms, immobilization fabrication and storage areas, conference rooms and staff offices.

        Schedule: A groundbreaking ceremony was held on May 14, 1996. The schedule is very tight due to the Japanese government's policy of budget plan. The building construction and equipment installation will be finished in the first half of 1997. We hope the beginning of treatment will be in the first half of 1998. This project will be carried out in collaboration with the National Institute of Radiological Sciences (NIRS), in Chiba.

        Takashi Ogino, M.D., Head of Div. of Radiation Oncology, The National Cancer Center Hospital East, Kashiwa, Chiba 277, Japan.

      News from Clatterbridge Centre for Oncology, UK:

        In conjunction with the Clatterbridge Cancer Research Trust, we have completed a large series of radiobiological measurements of tumour and endothelial cell lines. This was motivated by the possibility of treating age-related macular degeneration with protons where the target is neovascular tissue. A known tumour cell-line was used as a reference to test the experimental methodology. RBE values were derived by comparison with Co-60 irradiations performed at the radiotherapy department. The results will be presented at the PSI PTCOG in September by Dr C Walker. Out of several proposed methods of boosting the existing cyclotron energy (62 MeV) by a proton linac booster, one is being pursued in collaboration with Daresbury Synchrotron Radiation Laboratory and CERN. Some preliminary measurements are scheduled based on initial calculations. Andrzej Kacperek, Douglas Cyclotron Unit, Clatterbridge Centre for Oncology Bebington, Wirral, L63 4JY, UK.


    List dated July 1996

    P.S.I				Switzerland	p		1996	200 MeV, var. energy, gantry, dedicated line
    Berlin				Germany		p		1997	72 MeV cyclotron; eye treatment beam line.
    G.S.I Darmstadt			Germany		ion		1997	First Carbon beam in the medical cave 7/6/95
    KVI Groningen			The Netherlands	p		1998	plan:- 200 MeV accel.; 2 rms; 1 gantry; 1 fix.
    NPTC (Harvard)			MA U.S.A.	p		1998	at MGH; 235 MeV cyclotron; 2 gantries + 3 horiz.
    Kashiwa				Japan		p		1998	235 MeV cyclotron; 2 gantries, 1 horiz. beam
    NC Star				NC U.S.A.	p		1999?	synchrotron; 70-300 MeV; 2 horiz; 1 gantry
    Regensburg			Germany		p		1999?	gantry;1 fixed beam; 1 eye beam.
    Hyogo				Japan		ion		2000	protons & ion; 2 gantries; 1 horiz; 1 vert; 1 45 deg.
    TERA				Italy		p, ion		2002?	H- accel; 60-250 MeV p; +BNCT; isotope prod.
    AUSTRON				Austria		ion		?	protons and light ions.
    Beijing				China		p		?	250 MeV synchrotron.
    Central Italy			Italy		p		?	cyclotron; 1 gantry; 1 fixed
    Clatterbridge			England		p		?	upgrade using booster linear accelerator.
    ITEP Moscow			Russia		p		?	3 horiz.-1 fix beam, 2 gantry, 1 exp., H- accel.
    Jülich (KFA)			Germany		p		?	exp. beam line; plans for therapy.
    Krakow				Poland		p		?	60 MeV proton beam.
    Kyoto				Japan		p		?	250 MeV synchrotron; gantry; 1 fixed horiz beam.
    Proton Development N.A. Inc.	IL USA		p		?	300 MeV protons; therapy & lithography
    PROTOX				England		p		2001?	existing RAL synchrotron; 250 MeV; 3 treat. gantry

    List dated July 1996

    						RX		RX		TOTAL		TOTAL
    Berkeley 184	 CA. U.S.A.	p		1954		1957		30    
    Berkeley	 CA. U.S.A.	He		1957		1992		2054		June-91  
    Uppsala		 Sweden		p		1957		1976		73	
    Harvard		 MA. U.S.A.	p		1961				6785		June-96  
    Dubna		 Russia	p			1967		1974		84	
    Moscow		 Russia	p			1969				2838		May-96  
    Los Alamos	 NM. U.S.A.	¹-		1974		1982		230		        
    St. Petersburg	 Russia	p			1975				969		Dec-95  
    Berkeley	 CA. U.S.A.	heavy ion	1975		1992		433		June-91
    Chiba		 Japan		p		1979				86		June-93
    TRIUMF		 Canada		¹-		1979		1994		367		Dec-93
    PSI (SIN)	 Switzerland	¹-		1980		1993		503	
    PMRC, Tsukuba	 Japan		p		1983				462		July-95
    PSI (SIN)	 Switzerland	p		1984				2054		Dec-95
    Dubna		 Russia		p		1987				40		June-96
    Uppsala		 Sweden		p		1989				81		Mar-96
    Clatterbridge	 England	p		1989				698		June-96
    Loma Linda	 CA. U.S.A	p		1990				2000		July-96
    Louvain-la-Neuve Belgium	p		1991				21		Nov-93
    Nice		 France		p		1991				636		Nov-95
    Orsay		 France		p		1991				673		Nov-95
    N.A.C.		 South Africa	p		1993				130		Mar-96
    IUCF		 IN USA		p		1993				1		Dec-94
    UCSF - CNL	 CA U.S.A	p		1994				71		May-96
    HIMAC, Chiba	 Japan		heavy ion	1994				104		April-96
    TRIUMF		 Canada		p		1995				5		Dec-95
    							1100	pions
    							2591	ions 
    							17737	protons
    						TOTAL	21428	all particles

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