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The purpose of this study is to to assess the ability of 5 Gastro-Intestinal (GI) surgeons, within liver surgery, the readers, to identify pre-defined anatomical landmarks in liver images processed by HS2, and assessment of landmark distance between CT and Holographic visualization (HV).
This is a retrospective investigation of Computer Topographies (CTs)/ Holographic visualization based on CTs retrieved from patients with metastases in the liver from colorectal cancer.
The study consists of:
The study will enroll eligible subject's images.
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| Label | Type | Description | Intervention Names |
|---|---|---|---|
| Readers | 5 trained GI surgeons within liver surgery (the readers) will identify pre-defined anatomical landmarks in liver CT images that have been processed by HS2 |
|
| Name | Type | Description | Arm Group Labels | Other Names |
|---|---|---|---|---|
| Holocare Studio 2 (HS2) | Device | 3D HV |
|
| Measure | Description | Time Frame |
|---|---|---|
| Identification of all pre-defined landmarks. | All readers able to identify all pre-defined landmarks. | 3 days |
| Measure | Description | Time Frame |
|---|---|---|
| Comparison between CT and HV distance. | Comparison between CT and HV distance in mm between a marker in a defined center of each portal landmark (difference less than 8.0 mm). | 3 days |
| Comparison of image quality between CT and HV. |
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Inclusion Criteria:
Exclusion Criteria:
No exclusion criteria
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US patients whose liver CT images will be used to create HVs.
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| Facility | Status | City | State | ZIP | Country | Contacts |
|---|---|---|---|---|---|---|
| Memorial Sloan Kettering Cancer Center | New York | New York | 10065 | United States |
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Comparison of image quality between CT and HV on a 5-graded scale (1=HV significantly poorer quality than CT, 2=HV somewhat poorer quality than CT, 3=HV as good as CT, 4=HV somewhat better than CT, 5=HV significantly better than CT). More than 50% should be scored as HV as good as CT or better. All five readers scoring 3 or higher.
| 3 days |
| Evaluate ease of use. | Evaluate ease of use on a 5-graded scale (1=very difficult, 2=difficult, 3=neither difficult nor easy, 4=easy, 5=very easy). All five readers scoring 4 or 5. | 3 days |