Dynamic X-ray imaging with screen-printed perovskite CMOS array.
Yanliang LiuChaosong GaoDong LiXin ZhangJiongtao ZhuMeng WuWenjun LiuTongyu ShiXingchen HeJia-Hong WangHao HuangZonghai ShengDong LiangXue-Feng YuHairong ZhengXiangming SunYongshuai GePublished in: Nature communications (2024)
High performance X-ray detector with ultra-high spatial and temporal resolution are crucial for biomedical imaging. This study reports a dynamic direct-conversion CMOS X-ray detector assembled with screen-printed CsPbBr 3 , whose mobility-lifetime product is 5.2 × 10 -4 cm 2 V -1 and X-ray sensitivity is 1.6 × 10 4 µC Gy air -1 cm -2 . Samples larger than 5 cm[Formula: see text]10 cm can be rapidly imaged by scanning this detector at a speed of 300 frames per second along the vertical and horizontal directions. In comparison to traditional indirect-conversion CMOS X-ray detector, this perovskite CMOS detector offers high spatial resolution (5.0 lp mm -1 ) X-ray radiographic imaging capability at low radiation dose (260 nGy). Moreover, 3D tomographic images of a biological specimen are also successfully reconstructed. These results highlight the perovskite CMOS detector's potential in high-resolution, large-area, low-dose dynamic biomedical X-ray and CT imaging, as well as in non-destructive X-ray testing and security scanning.
Keyphrases
- high resolution
- dual energy
- image quality
- mass spectrometry
- low dose
- high speed
- high throughput
- room temperature
- emergency department
- magnetic resonance
- magnetic resonance imaging
- high dose
- deep learning
- risk assessment
- convolutional neural network
- climate change
- human milk
- contrast enhanced
- electronic health record
- preterm birth
- ionic liquid