An alternate title to this blog could be, “That time we X-rayed medieval choir book at the UC Medical Center, and then the pandemic happened I forgot to write a blog post about it”. Oops!
Let’s rewind the story back to mid-2019, when our Associate Conservator, Ashleigh, expressed interest in radiography on a beautiful, oversized choir book from the Classics Library. I, at the time, was the Photographic Documentation Specialist and had never carried out or assisted with any radiography projects, so I was very keen to start reaching out to anyone I could think of on West and East campus who might have access to such equipment. The most logical answer, UC Health, proved to be the winning one when finally the Director of Diagnostic Radiology put me in contact with the Enterprise Director of Imaging, who said yes to my request, and ultimately put me in contact with my main contact for the project, the Radiology Manager at UC Medical Center.
The date was set, October 22, 2019. Ashleigh, Holly and I packed up the heavy, choir book and carefully transported it from West campus to East campus to be imaged. The UC Health staff were beyond friendly, and I think they got a kick out of imaging the oversized leather volume. The technician really worked with us to adjust the intensity of the radiography depending on what we were trying to capture, whether it was the cover, the sewing and the supports, or the illuminated text (which was a little harder to capture with their equipment).
Overall, we discovered…a lot of nails, split thong supports, and on the lower board, four mends to the wooden board that appear to be bracing a split in the wood that is running vertically.
Then following the radiography session, they were kind enough to ask if we would also like to place the volume in the CT scanner. Since the scanner could easily and safely accommodate the volume while keeping it wrapped in foam, we jumped at the chance!
We received all the imaging files on two CDs from UC Health, and then I went about making heads and tails of it. The radiography images were fairly straightforward. For the most impactful imaging, namely of the spine, upper and lower boards, I created composite images using the panorama feature in Photoshop to merge the images. For example, each cover consisted of four separate images.
With the CT imaging, the CD came with a reviewer software (Sorna) to view the files. Frankly, the CT scans were a little bit harder to comprehend, but nonetheless interesting. Ultimately the CT scanner allows you to view the various materials within the object. Whereas normally for the equipment that was used that would mean bones, organs and tissues, for the choir book that meant metal material like brass, leather, ink and pigment. Within the viewer function there was also an interactive component to the CT data as well, which allowed you to manipulate various levels to see various intensities, but even after a lot of trail and error and experimentation I found it very confusing, though I did get some interesting, and some less impactful, results. Let’s just say, I do not have a future as a CT technician! I’ll stick to my day job.
Jessica Ebert – Assistant Conservator
