Use of the Broadbent-Bolton Collection
Rules and Instructions for Use
This page contains what you need to know before using the Collection for your research. Please read it carefully. Before you may use the Collection, you must submit to the Center the following four items:
- A protocol statement that summarizes the research you are doing and how you plan to use the data you wish to collect from the Center. The statement should be about one to two pages long and should include the research question you are asking and how you plan to address it.
- A signed Researcher's Agreement (one for each researcher that will have access to the data), stating that your use of the Collection will conform to the rules delineated in this packet.
- A Letter of Guaranty, ordinarily from the Chairman of your academic department, that guarantees payment of any fees you should incur according to the cost schedule included in this packet, or a personal check to cover the cost.
- A check, credit card, or purchase order number to cover the deposit called for in the rules delineated in this packet (such as the 50% down payment for digital images).
Again, all of these items must be submitted to the Center BEFORE you may begin to use the Collection.
Rules for Use of the Broadbent-Bolton Radiographic Collections
Option 1: Traditional Light Box Tracing of Original Radiographs
- Radiographs, models and all other materials are to be used ONLY within the confines of the Center. NO MATERIAL IS TO LEAVE THE CENTER AT ANY TIME.
- All tracings are to be made on matte acetate paper positioned with masking tape. Each tracing shall be removed when the research is finished with the drawing and all tape removed. NO MARKS OF ANY KIND ARE TO BE MADE ON THE FILM.
- All tracings shall include the four (4) registration points which have been permanently placed on each radiograph by the Curator.
- Models may be accessed under the supervision of the Curator. When measuring plaster casts, please be careful not to use sharp objects that may damage the casts.
- The Curator will access and re-file all records for the Researcher, based on a list provided to the Curator by the Researcher.
- Records can be accessed Monday through Friday from 8:30 a.m. to 5:00 p.m. Computer facilities are available through arrangement with the Curator.
- To prevent illegal copying of the Collection: Tracings of the radiographs are considered "copies" of the radiograph and are the property of the Center. NO TRACINGS ARE TO LEAVE THE CENTER. A limited subset of landmark-based data, pertinent to their research question, may be taken away from the Center.
Radiographs can be selected using the text database. Researchers can also visit the Center to examine the digital copies of the collection and make selections in person. Researchers using the CD collection to select images for CD loan will not be charged the daily use fee. The text database is in FileMaker Pro format. A free 30 day trial version of Filemaker Pro is available for download from the Filemaker Pro Website.
One-half of the CD loan fee must be paid before the CD is created and the balance payable on delivery. A bill for access fees will be issued at the conclusion of the visit and payment is due within 30 days.
Digital copies are scanned at 12 bit grayscale resolution with a spatial resolution of 0.1 mm per pixel. Each image is approximately 40 MB in size when stored in uncompressed TIFF format. These images are readable by Adobe Photoshop and can be optimized by the researcher for analysis and display on commercially available software programs. Researchers should contact the commercial vendor of the analysis and display software they plan to use to determine compatibility with Broadbent-Bolton images. To test compatibility, a CD-ROM with sample images is available at no charge from the Curator. Researchers may request radiographs at two time periods for up to 60 untreated subjects. Early records have a 100 mm lead impregnated scale placed at the mid-saggital plane on the nasion rest that is projected onto the x-ray image. Later records have 3 lead dots spaced at 50 mm intervals that serve the same purpose. All films have a recorded distance (in cm) of the film from the mid-saggital plan (lateral "ML") and from the porianic axis (frontal, "P+"). A conversion table in the book "Bolton Standards of Dentofacial Developmental Growth" allows for easy conversion to percent of enlargement.
Thank you for your interest in the Broadbent-Bolton Collection, one of the most important collections of its kind in the world.
For more information on obtaining copies of images please contact:
Dr. Mark Hans, D.D.S., M.S.D.
Bolton-Brush Growth Study Center
Case Western Reserve University
Bolton Dental Building DO3080
10900 Euclid Avenue
Cleveland, OH 44106-4905
Telephone: (216) 368-4649
Fax: (216) 368-3204
E-mail: mgh4@cwru.edu
