{
  "ptid_time": "135_S_4356_2016-12-12",
  "img_path": "/data/qiuhui/data/adni/images/135_S_4356/2016-12-12/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 18,733 mm³, 51.4% below the reference mean. With a Z-score of -1.23 (10.9th percentile), this represents mild atrophy; hippocampal volume measures 8,411 mm³, 11.3% above the reference mean. With a Z-score of 1.10 (86.4th percentile), this represents mild enlargement; whole brain volume measures 1,047,330 mm³, 3.0% below the reference mean. With a Z-score of -0.39 (35.0th percentile), this represents normal volume ; entorhinal cortex volume measures 5,151 mm³, 25.6% above the reference mean. With a Z-score of 1.74 (95.9th percentile), this represents moderate enlargement; fusiform gyrus volume measures 17,125 mm³, 9.1% below the reference mean. With a Z-score of -0.77 (21.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,862 mm³, 2.2% below the reference mean. With a Z-score of -0.20 (42.0th percentile), this represents normal volume . ",
  "text_data": "Age is 73.1 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 14.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain imaging shows mild ventricular atrophy but otherwise normal or even enlarged volumes in key regions like the hippocampus and entorhinal cortex, which are typically atrophied in Alzheimer’s. Cognitive scores (MMSE 30, MoCA 29) are intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T15:34:36.748690"
}