{
  "ptid_time": "006_S_4679_2012-06-01",
  "img_path": "/data/qiuhui/data/adni/images/006_S_4679/2012-06-01/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 22,546 mm³, 24.9% below the reference mean. With a Z-score of -0.59 (27.7th percentile), this represents normal volume ; hippocampal volume measures 7,448 mm³, 7.2% below the reference mean. With a Z-score of -0.72 (23.5th percentile), this represents normal volume ; whole brain volume measures 1,141,730 mm³, 0.6% above the reference mean. With a Z-score of 0.09 (53.6th percentile), this represents normal volume ; entorhinal cortex volume measures 3,614 mm³, 15.2% below the reference mean. With a Z-score of -1.05 (14.6th percentile), this represents mild atrophy; fusiform gyrus volume measures 21,437 mm³, 7.7% above the reference mean. With a Z-score of 0.64 (73.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 20,064 mm³, 10.5% below the reference mean. With a Z-score of -0.86 (19.4th percentile), this represents normal volume . ",
  "text_data": "Age is 69.1 years. Gender is Male. Education: 17 years. MMSE: 28.0. MoCA: 26.0. Logical Memory: 11.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.17 SUVR (normal ); Amyloid beta: 1046.00 pg/mL (normal ); Total tau: 339.30 pg/mL (mild elevated); Phosphorylated tau: 31.59 pg/mL (mild elevated). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show mostly normal values, with mild atrophy only in the entorhinal cortex. Cognitive scores (MMSE 28, MoCA 26) are within normal limits, and Aβ is normal, though T-tau and P-tau are mildly elevated, which could indicate early neurodegenerative changes.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to normal cognition but mild atrophy and tau elevation, suggesting possible early pathology)",
  "timestamp": "2025-07-25T21:39:54.063558"
}