Time delay integration acquisition for spatial genomics imaging
An imaging system for capturing spatial-omic images of biological tissue samples may include an imaging chamber configured to secure a biological tissue sample placed in the imaging system; a Time Delay and Integration (TDI) imager comprising at least one scan line; a light source configured to illuminate an area on the biological tissue sample that is being captured by the TDI imager; and a controller configured to cause the TDI imager to scan the biological tissue sample using one or more TDI scans of the biological tissue sample.
1 . An imaging system for capturing spatial-omic images of biological tissue samples, the imaging system comprising:
an imaging chamber configured to secure a biological tissue sample placed in the imaging system;
a Time Delay and Integration (TDI) imager comprising a plurality of scan lines;
a light source and a fiber optic bundle comprising a plurality of fiber-optic lines, wherein each of the plurality of fiber-optic lines is configured to deliver light of different wavelengths to illuminate an area on the biological tissue sample that is being captured by a set of corresponding scan lines of the TDI imager; and
a controller configured to cause the TDI imager to scan the biological tissue sample using one or more TDI scans of the biological tissue sample.
2 . The imaging system of claim 1 , wherein the controller causes the TDI imager to scan the biological tissue without requiring a mechanical repositioning, stabilization, or focus between capturing scan lines in a column.
3 . The imaging system of claim 1 , wherein at least one fiber-optic line projects light in an illumination area that is approximately circular onto the biological tissue sample.
4 . The imaging system of claim 1 , wherein the light source delivers light to the biological tissue sample through at least one fiber-optic line with an aperture having a rectangular shape.
5 . The imaging system of claim 4 , wherein the aperture projects a rectangular illumination area onto the biological sample onto a rectangular field-of-view of the TDI imager.
6 . The imaging system of claim 1 , wherein the light source delivers light to the biological tissue sample through at least one fiber-optic line with an aperture having a having a shape that matches a shape of a field-of-view of the TDI imager.
7 . The imaging system of claim 1 , wherein each of the plurality of fiber-optic lines have an oval or rectangular shape.
8 . The imaging system of claim 1 , wherein each of the plurality of fiber-optic lines is positioned to direct light at different portions of the biological tissue sample.
9 . A method of capturing spatial-omic images of a biological tissue sample, the method comprising:
securing a biological tissue sample in an imaging chamber of an imaging system;
directing light from a light source through a fiber-optic bundle comprising a plurality of fiber-optic lines, wherein each of the plurality of fiber-optic lines is configured to deliver light of different wavelengths to illuminate an area on the biological tissue sample; and
causing a Time Delay and Integration (TDI) imager to scan the biological tissue sample where the biological tissue sample is illuminated in individual areas corresponding to each of the plurality of fiber-optic lines that are captured by corresponding sets of scan lines of the TDI imager using one or more TDI scans of the biological tissue sample.
10 . The method of claim 9 , further comprising assembling equally spaced lines from a plurality of scan line columns from the TDI imager.
11 . The method of claim 9 , wherein the light from the light source comprises a plurality of distinct wavelengths that are simultaneously projected on the biological tissue sample.
12 . The method of claim 11 , further comprising filtering the plurality of distinct wavelengths using a plurality of filters in front of the TDI imager.
13 . The method of claim 11 , further comprising filtering the plurality of distinct wavelengths using a beam splitter in front of the TDI imager.
14 . An imaging system for capturing spatial-omic images of biological tissue samples, the imaging system comprising:
an imaging chamber configured to secure a biological tissue sample placed in the imaging system;
a Time Delay and Integration (TDI) imager;
a light source configured to illuminate areas on the biological tissue, each area being simultaneously illuminated with a distinct wavelength; and
a controller configured to cause the TDI imager to simultaneously capture a plurality of distinct images of the biological tissue sample, wherein each of the plurality of distinct images corresponds to one of the plurality of distinct wavelengths captured by a corresponding set of scan lines of the TDI imager.
15 . The imaging system of claim 14 , wherein the TDI imager comprises a plurality of scan lines, and each of the plurality of scan lines captures one of the plurality of distinct images.
16 . The imaging system of claim 14 , wherein the TDI images comprises a plurality of individual TDI cameras, and each of the corresponding sets of scan lines corresponds to one of the plurality of individual TDI cameras directed at a different location on the biological tissue sample to simultaneously capture the plurality of distinct images.
17 . The imaging system of claim 14 , further comprising a filter wheel in front of the TDI imager comprising a plurality of filters corresponding to the plurality of distinct wavelengths.
18 . The imaging system of claim 14 , wherein the light source comprises a broad-spectrum light source that combines the plurality of distinct wavelengths onto a single illumination area.