Siemens Healthineers AI-Rad Companion vs Tempus AI Imaging

Siemens lists lung nodule detection with volume and diameter inside its Chest CT module, while Tempus Pixel Lung carries an FDA clearance, K203744, that the vendor's own footnote says is not indicated for nodule detection. In the US that feature comes from third-party engines such as Infervision's InferRead CT. A hospital that wants chest CT nodule detection from the product's own module will find Tempus falls short. Prostate MR is the other place the two meet. Siemens lists gland segmentation, volume, PSA density and lesion classification, with a clearance renewed in September 2025 (K252608), and a urology imaging service would start there. Tempus runs prostate lesion detection on Quibim's engine. Its real draw is an oncology service that needs lesion segmentation, longitudinal tracking and RECIST-style response reports on CT and MR, or a cardiac MR group that wants T1 and T2 maps generated inline. Tempus says Pixel connects to existing PACS, worklist and dictation systems without naming them.