{
  "ptid_time": "072_S_4941_2014-11-05",
  "img_path": "/data/qiuhui/data/adni/images/072_S_4941/2014-11-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,498 mm³, 21.6% above the reference mean. With a Z-score of 0.51 (69.6th percentile), this represents normal volume ; hippocampal volume measures 7,289 mm³, 9.2% below the reference mean. With a Z-score of -0.92 (17.9th percentile), this represents normal volume ; whole brain volume measures 1,130,020 mm³, 0.4% below the reference mean. With a Z-score of -0.06 (47.8th percentile), this represents normal volume ; entorhinal cortex volume measures 6,062 mm³, 42.2% above the reference mean. With a Z-score of 2.92 (99.8th percentile), this represents significant enlargement; fusiform gyrus volume measures 19,048 mm³, 4.3% below the reference mean. With a Z-score of -0.36 (36.0th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,572 mm³, 12.7% below the reference mean. With a Z-score of -1.04 (14.8th percentile), this represents mild atrophy. ",
  "text_data": "Age is 62.2 years. Gender is Male. Education: 14 years. MMSE: 30.0. MoCA: 30.0. Logical Memory: 14.0. APOEε4 alleles: 1.0. Biomarker levels: Florbetapir (AV45): 1.06 SUVR (normal ). ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume is slightly below the reference mean (Z-score -0.92, 17.9th percentile), but still within the normal range. The middle temporal gyrus shows mild atrophy (Z-score -1.04, 14.8th percentile), while other regions, including the entorhinal cortex (which is significantly enlarged), are normal. Cognitive scores (MMSE 30, MoCA 30) are intact, and amyloid PET (AV45) is normal.  \n\n**Diagnosis:** **CN (Cognitively Normal)**  \n**Confidence:** **Medium** (due to mild temporal atrophy but preserved cognition and normal amyloid status)",
  "timestamp": "2025-07-26T09:27:33.763939"
}