{
  "ptid_time": "020_S_1288_2012-04-02",
  "img_path": "/data/qiuhui/data/adni/images/020_S_1288/2012-04-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 13,131 mm³, 56.3% below the reference mean. With a Z-score of -1.34 (9.1th percentile), this represents mild atrophy; hippocampal volume measures 9,112 mm³, 13.5% above the reference mean. With a Z-score of 1.35 (91.2th percentile), this represents mild enlargement; whole brain volume measures 1,211,110 mm³, 6.7% above the reference mean. With a Z-score of 0.96 (83.0th percentile), this represents normal volume ; entorhinal cortex volume measures 4,292 mm³, 0.7% above the reference mean. With a Z-score of 0.05 (51.9th percentile), this represents normal volume ; fusiform gyrus volume measures 22,179 mm³, 11.4% above the reference mean. With a Z-score of 0.95 (82.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 23,272 mm³, 3.8% above the reference mean. With a Z-score of 0.32 (62.4th percentile), this represents normal volume . ",
  "text_data": "Age is 64.9 years. Gender is Male. Education: 20 years. Handedness: Right. Race: White. Medical history: Cardiovascular. MMSE: 30.0. MoCA: 28.0. Logical Memory: 11.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal or above-average volumes in key regions (hippocampus, whole brain, entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores (MMSE 30, MoCA 28) are within normal limits, and there is no APOE4 genetic risk.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T01:13:36.903323"
}