{
  "ptid_time": "067_S_2304_2017-09-05",
  "img_path": "/data/qiuhui/data/adni/images/067_S_2304/2017-09-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 38,259 mm³, 27.4% above the reference mean. With a Z-score of 0.65 (74.3th percentile), this represents normal volume ; hippocampal volume measures 8,010 mm³, 0.2% below the reference mean. With a Z-score of -0.02 (49.2th percentile), this represents normal volume ; whole brain volume measures 1,230,310 mm³, 8.4% above the reference mean. With a Z-score of 1.19 (88.4th percentile), this represents mild enlargement; entorhinal cortex volume measures 5,364 mm³, 25.8% above the reference mean. With a Z-score of 1.79 (96.3th percentile), this represents moderate enlargement; fusiform gyrus volume measures 20,044 mm³, 0.7% above the reference mean. With a Z-score of 0.06 (52.3th percentile), this represents normal volume ; middle temporal gyrus volume measures 22,262 mm³, 0.7% below the reference mean. With a Z-score of -0.05 (47.8th percentile), this represents normal volume . ",
  "text_data": "Age is 67.8 years. Gender is Male. Education: 17 years. MMSE: 30.0. MoCA: 27.0. Logical Memory: 15.0. APOEε4 alleles: 0.0. Biomarker levels: Florbetapir (AV45): 1.01 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements are largely within normal ranges or even slightly enlarged (e.g., entorhinal cortex, whole brain). Cognitive scores (MMSE 30, MoCA 27) are normal, and amyloid PET (AV45) is negative. No significant atrophy or biomarker evidence of Alzheimer’s pathology is present.  \n\n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** High",
  "timestamp": "2025-07-26T08:35:54.841484"
}