Systems for PET imaging

1. An imaging system, comprising:

a first device including a first scanning channel; and

a second device arranged side by side along an axial direction of the first scanning channel, the second device including:

a second scanning channel connected to the first scanning channel;

a first side facing the first device;

a heat generating component; and

a cooling assembly configured to cool the heat generating component, wherein

the heat generating component is closer to the first side of the second device than at least a portion of the cooling assembly, and

the cooling assembly includes:

an inlet chamber;

a return chamber; and

at least one baffle surrounding at least one of the inlet chamber or the return chamber, the at least one baffle being configured to separate the at least one of the inlet chamber or the return chamber from the heat generating component.

2. The system of claim 1 , wherein the cooling assembly includes:

an air blower configured to drive cooling air; and

wherein the at least one of the inlet chamber or the return chamber is configured to provide a passage for the cooling air, the at least one of the inlet chamber or the return chamber is located on a second side of the heat generating component other than a first side of the heat generating component, and the first side of the heat generating component faces the first device.

3. The system of claim 2 , wherein the cooling assembly further includes:

a heat exchanger configured to cool the cooling air, and the inlet chamber is in fluid communication with the heat exchanger.

4. The system of claim 1 , wherein the second device includes a PET device, and the heat generating component includes a detector assembly.

5. The system of claim 4 , wherein the detector assembly has a first side and a second side along an axial direction of the first scanning channel or the second the second side of the detector assembly, and a first distance along the axial direction of the first scanning channel or the second scanning channel between the first side of the detector assembly and the first side of the PET device facing the first device is equal to or less than 170 mm.

6. The system of claim 5 , wherein the first distance is equal to or less than 150 mm.

7. The system of claim 4 , wherein the first device includes a CT device or an X-ray imaging device.

8. The system of claim 7 , wherein the CT device has a first end surface and a second end surface along an axial direction of the first scanning channel or the second scanning channel, the first end surface is farther from the PET device than the second end surface, the CT device includes an X-ray tube, and a second distance between the X-ray tube and the first end surface of the CT device along an axial direction of the first scanning channel or the second scanning channel is equal to or less than 350 mm.

9. The system of claim 1 , wherein the second device further includes one or more second sides, and the cooling assembly is located on at least one of the one or more second sides of the second device.

10. The system of claim 1 , wherein the at least one baffle includes an air intake and an air outlet, the heat generating component includes a first chamber and a second chamber, the inlet chamber is in fluid communication with the first chamber through the air intake, and the return chamber is in fluid communication with the second chamber through the air outlet.

11. The system of claim 1 , further comprising a clapboard connected to the at least one baffle, and the clapboard being configured to separate the inlet chamber and the return chamber.

12. The system of claim 1 , wherein the cooling assembly further includes:

a cooler; and

a chilling chamber surrounding the heat generating component, wherein the inlet chamber is in fluid communication with the chilling chamber, and the return chamber is in fluid communication with the cooler.

13. The system of claim 12 , wherein the inlet chamber and the return chamber have a common plane, and the common plane includes a first thermal insulation layer.

14. The system of claim 13 , wherein an air intake of the inlet chamber in fluid communication with the chilling chamber and an air outlet of the return chamber in fluid communication with the chilling chamber are formed on the common plane.

15. The system of claim 13 , wherein a plane other than the common plane between the inlet chamber and the return chamber includes a second thermal insulation layer, or a sidewall of the chilling chamber includes a third thermal insulation layer.

16. The system of claim 12 , the cooler includes a compressor chamber or an air supply chamber, and a sidewall of the compressor chamber or the air supply chamber includes a fourth thermal insulation layer.

17. The system of claim 1 , wherein:

the second device further comprises a gantry assembly, the gantry assembly includes a main gantry and a gantry base configured to support the main gantry, and the inlet chamber and the return chamber are integrated on the main gantry.

18. The system of claim 1 , wherein the second device further comprises:

a gantry assembly including a main gantry and a gantry base configured to support the main gantry, the heat generating component is mounted on the main gantry; and

a sliding device configured underneath the cooling assembly to facilitate mounting of the cooling assembly.

19. The system of claim 18 , wherein the sliding device includes a sliding piece and a supporting plate configured to support the cooling assembly.

20. The system of claim 19 , wherein the sliding piece includes a wheel assembly.