{
  "ptid_time": "036_S_4491_2013-02-12",
  "img_path": "/data/qiuhui/data/adni/images/036_S_4491/2013-02-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 41,935 mm³, 10.8% below the reference mean. With a Z-score of -0.31 (37.7th percentile), this represents normal volume ; hippocampal volume measures 6,811 mm³, 2.3% below the reference mean. With a Z-score of -0.19 (42.3th percentile), this represents normal volume ; whole brain volume measures 935,528 mm³, 9.1% below the reference mean. With a Z-score of -1.19 (11.7th percentile), this represents mild atrophy; entorhinal cortex volume measures 3,930 mm³, 1.0% below the reference mean. With a Z-score of -0.06 (47.4th percentile), this represents normal volume ; fusiform gyrus volume measures 18,113 mm³, 0.3% above the reference mean. With a Z-score of 0.02 (50.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,955 mm³, 1.1% below the reference mean. With a Z-score of -0.10 (46.2th percentile), this represents normal volume . ",
  "text_data": "Age is 85.1 years. Gender is Male. Education: 19 years. MMSE: 30.0. MoCA: 25.0. Logical Memory: 19.0. Laboratory findings: Serum Glucose: 126.00 (significant elevated); Calcium (EDTA): 9.00 (significant reduced). APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume data shows mild whole brain atrophy (Z-score -1.19, 11.7th percentile), but all other regions (hippocampus, entorhinal cortex, fusiform gyrus, middle temporal gyrus) are within normal ranges. Cognitive scores (MMSE 30, MoCA 25) are borderline for MCI but not strongly indicative of dementia. No APOE4 risk allele is present.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to mild whole brain atrophy but otherwise normal findings and borderline MoCA)",
  "timestamp": "2025-07-26T06:14:08.330489"
}