The project harnessed the capabilities of a 320-slice CT scanner, one of the most sophisticated tools available in medical imaging, to conduct full-body scans of the mummies inside the lower halves of their heavy sarcophagi. Such scanners produce hundreds of thin cross-sectional images or “slices” of the body, which digital visualization experts then stack to form a comprehensive three-dimensional digital reconstruction. This digital approach permits an in-depth exploration of the mummies without risking damage to the delicate linen wrappings or the historic remains themselves.

Unlike prior efforts that relied on older scanning technologies, the modern CT scanner’s enhanced resolution has allowed for remarkable detail. The scans revealed facial features unknown until now, such as the contours of their eyelids and the exact shape of their lower lips, providing a more humanized perspective of these long-deceased priests. This breakthrough enables researchers and museum visitors alike to connect with the individuals on a deeply personal level, bridging millennia with the power of medical imaging.

Health assessments gleaned from the scans indicated that Nes-Min likely suffered from chronic lower back pain, a condition common in contemporary populations. His lumbar vertebrae showed signs of collapse consistent with natural wear and tear due to aging, a profound reminder that human physiology has confronted similar ailments across epochs. Additionally, the presence of artifacts buried with Nes-Min, including scarab beetles and fish representations, continued to shed light on burial customs and daily beliefs.

Nes-Hor’s CT images presented a different health profile, exposing severe dental pathology and advanced deterioration of the hip joint. Intriguingly, despite being from a later period, Nes-Hor was evidently older at the time of death than Nes-Min, a fact which underscores the significance of individual life experiences and health challenges faced by ancient peoples. These scans unfold personal health narratives that humanize the past and challenge assumptions about ancient lifespans and medical conditions.

Leading the imaging project, Summer Decker, PhD, the director of the USC Center for Innovation in Medical Visualization, emphasized how advancements in scanning technology have dramatically enhanced the level of detail visible today. “Previous scans could not capture the extensive and detailed information we now have, which opens up new possibilities for understanding these ancient individuals in ways previously unimaginable,” she explained. Her team’s expertise allowed them to transform raw imaging data into vivid 3D models, transcending the limitations of 2D viewing and enhancing interpretative accuracy.

Beyond digital models, the team utilized medical-grade 3D printing technologies to produce life-size replicas of key skeletal elements such as the skulls, spines, and hips of the priests, as well as the artifacts discovered with Nes-Min. These tactile reproductions provide invaluable tools not only for scientific research but also for public exhibition and educational purposes, engaging museum visitors with tangible connections to ancient history.

The “Mummies of the World: The Exhibition” at the California Science Center offers a premier venue for this display. Opening February 7, this exhibit features these newest scanned mummies, bringing never-before-seen detailed digital and physical representations to Los Angeles. According to Diane Perlov, PhD, an anthropologist and senior vice president for special projects at the center, such technological applications offer a “powerful window into the world of ancient people and past civilizations that might otherwise be lost,” enabling a deeper understanding of historical lifeways.

Keck Medicine’s innovations extend far beyond archaeology. Their 3D visualization and printing techniques are pivotal in translating clinical medical imaging—such as CT and MRI—into physical models for surgical planning and education. The process starts with hundreds of cross-sectional slices that are digitally reconstructed into three-dimensional models. Surgeons can then analyze and measure complex anatomical structures with greater precision or create accurate models to rehearse surgeries, improving patient outcomes by providing tailored treatment options based on precise anatomy.

These tangible models also have transformative effects on patient communication. According to Dr. Decker, patients holding replicas of their own organs gain new insights into their medical conditions, fostering understanding and cooperation in their treatment plans. Such technologies bridge the gap between abstract medical imaging and patient experience, demonstrating how advances originally developed for clinical care can reverberate into diverse fields such as archaeology.

The scanning project of Nes-Min and Nes-Hor epitomizes the tremendous interdisciplinary synergy between medical imaging technology, anthropology, and museology. It not only challenges preconceived notions about ancient health and lifestyles but also exemplifies how modern medical technology can stimulate fresh discoveries in humanities research. Access to nearly two dozen 3D printers at the USC Center for Innovation in Medical Visualization underscores Keck Medicine’s commitment to integrating innovation with applied science.

As “Mummies of the World: The Exhibition” showcases these ancient individuals in a new light, it epitomizes the power of technology to contextualize history in a visceral and relatable way. Each scan and print makes a silent millennia-old story visible and palpable, inviting reflection on the enduring human condition. Ultimately, this extraordinary endeavor heralds a future where continued technological advancements will deepen our connection to the past and illuminate its enduring relevance to human health and society.

Subject of Research: Ancient Egyptian Mummies, Medical Imaging, Computed Tomography

Article Title: Unlocking Ancient Lives: 3D CT Scanning Reveals Hidden Stories of Egyptian Mummies

News Publication Date: February 7, 2024

Web References:

• Keck Medicine of USC Radiology
• Mummies of the World: The Exhibition
• California Science Center

Image Credits: Ricardo Carrasco III

Keywords: Imaging, Archaeology, Computed Tomography, 3D Visualization, Mummies, Medical Technology, Ancient Egypt

This research presents an intriguing question: what does a mummy smell like? Through meticulous scientific methodology, the study reveals that mummies emit a distinctive bouquet of aromas, described as “woody,” “spicy,” and even “sweet.” These findings emerged from the analysis of nine mummies covering nearly two millennia of Egyptian history, showcasing how scents that have lingered for centuries can provide critical information on ancient embalming techniques and the materials used in the preservation process.

The researchers were particularly astonished by the uniqueness of the odors discovered. Each mummy had its own scent profile, suggesting that different mummification methods were employed depending on the social status of the deceased, the time period, and local practices. This individualization of smells underscores the complexity and sophistication of ancient Egyptian embalming techniques, which were rooted in religious and cultural significance.

Interestingly, the study challenges a long-held assumption that historical artifacts, particularly those kept in museum cases, are devoid of scent. In truth, the careful preservation of mummies did not eliminate their aromatic profiles. Rather, the scents endure, often described by conservators as pleasant. Ancient Egyptians, who believed in the necessity of proper body preparation for a successful afterlife, incorporated fragrant oils, resins, and bitumen into their embalming rituals, ensuring that the deceased would retain a pleasant aroma for eternity.

The process of extracting the scents was no straightforward task. Researchers utilized innovative techniques to collect air around the mummies. By inserting a tube between the coffin’s base and lid, they ensured minimal disturbance to these ancient remains while effectively capturing the volatile compounds. The analysis then involved advanced gas-chromatography-mass-spectrometry-olfactometry (GC-MS-O), coupled with evaluations by a trained sensory panel. The findings revealed an array of odor profiles, highlighting the mummies’ fragrant history.

Of the sensory notes identified, “woody,” “spicy,” and “sweet” emerged as the most prominent descriptors. Following these were references to “incense-like,” “stale,” and even “rancid” scents, illustrating the diverse olfactory landscape surrounding mummies. It was particularly interesting to note that the intensity of a mummy’s odor did not directly correlate with its conservation state. This implies a more profound connection between the chemical composition of the scents and the individual mummification practices rather than simple preservation efficacy.

Additionally, this study identified a correlation between the social status of individuals at the time of their death and the scents associated with their mummification. Mummies that exuded the strongest odors were often believed to belong to individuals of higher social standing, suggesting they benefitted from more elaborate and valued preservation techniques. This finding provides tantalizing clues to the societal ingrains surrounding mummification practices in ancient Egypt, where social hierarchy extended beyond life into the afterlife.

Another significant aspect of the research is how the display of these mummies has influenced their scent profiles. Mummies that are currently on display tend to have higher concentrations of scent compounds. It is suggested that these compounds accumulate over time due to the enclosed environments within display cases, further enhancing the mummified remains’ aromatic characteristics. Thus, the scents are not only historical records of ancient embalming methods but also artifacts shaped by modern conservation practices.

The classification of the identified odor components revealed that they could originate from several sources: the embalming process, microbial activity acting on the mummy, oils meant to deter pests, or even synthetic pesticides used during conservation. Each source offers a glimpse into the multifaceted life of a mummy, enriching our understanding of how ancient Egyptians approached death and preservation.

Celia Bembibre, a co-author of the study, emphasizes the importance of these scents. They represent a valuable aspect of mummified bodies that remains hidden from most museum visitors, who only see them behind glass. The scents provide a deeper connection to the past, offering an experience that goes beyond visual engagement. In understanding these olfactory dimensions, researchers aim to recreate the scents of these mummies, thereby enhancing the educational experience for museum-goers and ensuring a more immersive journey into their ancient world.

As these researchers take bold steps to decode the aromatic history of mummies, it becomes clear that the scents contained within their wrappings are intrinsically tied to the cultural and religious practices of ancient Egypt. Every smell is a story, a fragment of history that links us to a time long past but vivid in its details through these preserved remains. This cross-disciplinary approach, merging chemistry with history and anthropology, opens a new frontier in understanding the past.

In a world where the visual often overshadows the olfactory, this research endeavors to restore balance by highlighting the power of scent in experiencing history. By bridging the gap between the extraordinary preservation of mummies and the science behind their smells, society embarks on a holistic exploration of its cultural heritage. As museums begin to consider the olfactory aspect of their exhibits, the future promises a richer, more complex engagement with history that appeals to all the senses.

Through the integration of innovative scientific research with historical inquiry, the study underscores a profound truth: there remains much to uncover about our past—much of it hidden in the past’s lingering aromas.

Subject of Research: Analysis of volatile compounds from mummified remains
Article Title: “Ancient Egyptian Mummified Bodies: Cross-Disciplinary Analysis of Their Smell”
News Publication Date: 13-Feb-2025
Web References: Journal of the American Chemical Society
References: Adapted from the Journal of the American Chemical Society, DOI: 10.1021/jacs.4c15769
Image Credits: Adapted from the Journal of the American Chemical Society

Keywords

Chemistry, Mummified remains, Chemical analysis, Ancient Egyptian practices, Cultural heritage, Scent analysis, Preservation techniques, Social status in ancient Egypt, Olfactory history, Cross-disciplinary research.