Presentation given at the Visible Human Project Conference
October 8, 1996

Rationale for Development: Cross-sectional Anatomy Instruction c. 1992

Cross-sectional Anatomy Tutor Demonstration - a "slide show" of screen captures.

Out-dated Materials
First, we were using a number of outdated materials, such as old CTs. Our access to and mastery of clinical images, particularly MRIs, was limited.
Materials of Limited Usefulness
Embedded body sections were only marginally useful,

Labels Awkward/Overwhelming in Atlases
and students found the "porcupine" approach to labeling images in most cross-sectional atlases awkward and overwhelming. The extent of a structure often was not apparent, particularly on CTs and MRIs. Students also found it difficult to orient to cross-sectional images.
Lack of Correlated CTs or MRIs
The lack of exact correspondence between clinical images and body sections in Atlases made comparison cumbersome and inefficient.

Inadequate Images for Testing
Finally, our testing methods were unsatisfactory because of the low quality of reproduced images that were available to us.
One-to-One or Small Group Approach
Some of these problems could be solved by working with students one-on-one, or in small groups of 2 or 3 students. However, finite lab contact and staff time limited the efficacy of this approach.

     With support from the School of Medicine and in conjunction with the Division of Audiovisual Education at Duke, we developed a prototype of a cross-sectional anatomy computer tutorial. We were able to obtain permission to use the Nasco Life/form (NASCO, Fort Atkinson, WI) abdomen images in-house. However, these images were not ideal for our purposes because there were a limited number of levels available, and copyright restrictions on these images were a potential problem for distributing the program to other medical schools. Furthermore, the NASCO images did not include correlated CTs or MRIs, and the images were from one elderly male individual with poor muscular development and some significant pathology, including a missing kidney.

     When we learned in 1993 of the forthcoming Visible Human images, we quickly realized that these images represented a significant improvement for our purposes over the NASCO images:

• thousands of body levels were available;
  
• there were no royalties or copyright restrictions on use of the images;
  
• correlated CTs and MRIs also were available; and
  
• the images were from healthy, well-developed male and female individuals with no significant pathology.