Subtraction computer body-layer perfusion functional imaging method
A technology of perfusion imaging and functional imaging, applied in echo tomography, computed tomography scanner, etc., can solve the problem of unsuccessful clinical application in diagnosing osteonecrosis, inability to obtain accurate and effective bone ischemia, osteonecrosis physiology, pathological state and other problems. Change evaluation and diagnosis information, etc., to achieve the effect of short scanning and imaging time, expanding application scope, and few influencing factors
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Embodiment 1
[0015] Object: femoral head
[0016] Adopt GE LightSpeed 4-slice spiral CT instrument, use cine mode, 80kV, 200mA, matrix 512×512, FOV 12cm, scan 4 slices at the same time every revolution of the tube, scan time is 1s, slice thickness 5mm, scan range 20mm, contrast agent Use 50ml of 300mgI / ml Omnipaque, automatically push injection through the forearm vein high pressure syringe at a rate of 4ml / s, delay for 5s, and scan (data acquisition) for 50s.
[0017] After the scan is completed, the CTP image data is transmitted to the imaging workstation (AW 4.2), and the image data after blood perfusion at the selected femoral head level is firstly compared with the image data of the same level and the same frame, layer by layer according to the perfusion sequence. Subtraction, to generate a new set of subtraction image (data) sequence, and then use the conventional bone perfusion imaging analysis system of Perfusion 3 software to image and analyze the subtraction image (data) sequen...
Embodiment 2
[0019] Target: brain (brain tumor)
[0020] Adopt GE LightSpeed 4-slice spiral CT instrument, use cine mode, 80kV, 200mA, matrix 512×512, FOV 12cm, scan 4 slices at the same time every revolution of the tube, scan time is 1s, slice thickness 5mm, scan range 20mm, contrast agent Use 50ml of 300mgI / ml Omnipaque, automatically push injection through the forearm vein high pressure syringe at a rate of 4ml / s, delay for 8s, and scan (data acquisition) for 50s.
[0021] After the scan is completed, the CTP image data is transmitted to the imaging workstation (AW 4.2), and the image data after blood perfusion of the selected brain tumor layer is firstly compared with the image data of the same layer and the same frame, layer by layer according to the perfusion sequence. Subtraction to generate a new set of subtraction image (data) sequence, which is imaged and analyzed in the conventional bone perfusion imaging analysis system using Perfusion 3 software, and the computer automatical...
Embodiment 3
[0023] Object: Brain (cerebral infarction)
[0024] Adopt GE LightSpeed 4-slice spiral CT instrument, use cine mode, 80kV, 200mA, matrix 512×512, FOV 25cm, scan 4 slices at the same time every revolution of the tube, scan time is 1s, slice thickness 10mm, scan range 40mm, contrast agent Use 50ml of 300mgI / ml Omnipaque, inject automatically through the forearm vein high pressure syringe at a rate of 4ml / s, delay for 8s, and scan (data acquisition) for 40s.
[0025] After the scan is completed, the CTP image data is transmitted to the imaging workstation (AW 4.2), and the image data after blood perfusion at the selected basal ganglia level is firstly compared with the image data of the same level and the same frame, layer by layer according to the perfusion sequence. Subtraction, to generate a new set of subtraction image (data) sequence, in the conventional brain perfusion imaging analysis system using Perfusion 3 software to image and analyze the subtraction image (data) seq...
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