Ventana Medical Systems, Inc.

Oregon Health & Science University

Roche Diagnostics Gmbh

F. Hoffmann-la Roche Ag

David Chafin

Michael Otter

Daniel Bauer

Esteban Roberts

Benjamin C Stevens

Jefferson Taft

Michael S Barnes

Joe W Gray

Christophe Chefd'hotel

Thomas M Grogan

Karl Eric Garsha

Kandavel Shanmugam

Brian Jay Druker

Franklin Ventura

Thomas Jacob

Abbey Pierson

Damien Ramunno-Johnson

Abbey Theiss

Abbey Pierson Theiss

Tothu Tania Vu

Brian Howard Kram

Ryan J Reeser

Tania Vu

Niels Kroeger-Lui

Frank Ventura

Karl Garsha

Tothu Vu

Brian Jay Drucker

A tissue sample that has been removed from a subject can be evaluated. A change in speed of the energy traveling through the sample is evaluated to monitor changes in the biological sample during processing. The monitoring can detect movement of fluid with the sample and cross-linking. A system for performing the method can include a transmitter that outputs the energy and a receiver configured to detect the transmitted energy.

Systems and methods for monitoring tissue sample processing

The subject disclosure presents systems and computer-implemented methods for evaluating a tissue sample that has been removed from a subject. A change in speed of the energy traveling through the sample is evaluated to monitor changes in the biological sample during processing. The rate of change in the speed of the energy is correlated with the extent of diffusion. A system for performing the method can include a transmitter that outputs the energy and a receiver configured to detect the transmitted energy. A time-of-flight of acoustic waves and rate of change thereof is monitored to determine an optimal time for soaking the tissue sample in a fixative.

Diffusion monitoring protocol for optimized tissue fixation

Disclosed are a system and method for evaluating a tissue sample that has been removed from a subject. Movement of fluid through the tissue sample is monitored by measuring time of flight of acoustic waves passed through the tissue sample. A system for performing the method can include a transmitter that outputs the energy and a receiver configured to detect the transmitted energy. Using the disclosed method and system, an optimized protocol for ensuring adequate distribution of the fluid throughout a variety of tissue types and/or sample sizes can be developed and utilized.

Standardizing diffusion of a fluid into tissue

A method for fixing a biological sample includes delivering energy through a biological sample that has been removed from a subject, while fixing the biological sample. A change in speed of the energy traveling through the biological sample is evaluated to monitor the progress of the fixation. A system for performing the method can include a transmitter that outputs the energy and a receiver configured to detect the transmitted energy. A computing device can evaluate the speed of the energy based on signals from the receiver.

Processing system for processing specimens using acoustic energy

A method is disclosed that permits calculation of reagent concentrations (in SI units) over time and space within a tissue sample as the sample is immersed in the reagent and the reagent diffuses into the tissue sample. The disclosed method has yielded the surprising result that once a formaldehyde concentration at all points within a tissue sample exceeds about 90 mM during a cold step of a cold+hot fixation protocol, the hot step of the fixation protocol can be commenced to provide reliable detection of molecular targets and preservation of tissue morphology in downstream analyses.

System and method for sample preservation

An aldehyde fixative solution at a first temperature is caused to contact a tissue sample for a first time period, additionally an aldehyde fixative solution is caused to contact the tissue sample at a second temperature higher than the first temperature for a second time period. The first time period typically ranges from about 15 minutes up to about 4 hours, and the first temperature typically is from greater than 0° C. to at least 15° C. The second temperature typically is from greater than about 22° C. to about 55° C., and the second time period ranges from about 1 hour to about 4 hours. Using this process, improved tissue morphology and IHC staining as well as superior preservation of post-translation modification signals have been accomplished in approximately 4 hours compared to 24 hours for room temperature protocols, and more even morphology and antigen preservation are observed.

Method for tissue sample fixation

Methods, systems, and apparatuses for detecting and describing heterogeneity in a cell sample are disclosed herein. A plurality of fields of view (FOV) are generated for one or more areas of interest (AOI) within an image of the cell sample are generated. Hyperspectral or multispectral data from each FOV is organized into an image stack containing one or more z-layers, with each z-layer containing intensity data for a single marker at each pixel in the FOV. A cluster analysis is applied to the image stacks, wherein the clustering algorithm groups pixels having a similar ratio of detectable marker intensity across layers of the z-axis, thereby generating a plurality of clusters having similar expression patterns.

Methods, systems, and apparatuses for quantitative analysis of heterogeneous biomarker distribution

System and method for sample processing

An aldehyde fixative solution at a first temperature is caused to contact a tissue sample for a first time period, additionally an aldehyde fixative solution is caused to contact the tissue sample at a second temperature higher than the first temperature for a second time period. The first time period typically ranges from about 15 minutes up to about 4 hours, and the first temperature typically is from greater than 0&#xb0; C. to at least 15&#xb0; C. The second temperature typically is from greater than about 22&#xb0; C. to about 55&#xb0; C., and the second time period ranges from about 1 hour to about 4 hours. Using this process, improved tissue morphology and IHC staining as well as superior preservation of post-translation modification signals have been accomplished in approximately 4 hours compared to 24 hours for room temperature protocols, and more even morphology and antigen preservation are observed.

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Tucson, AZ, United States of America

David Chafin