{
  "ptid_time": "141_S_6240_2018-03-11",
  "img_path": "/data/qiuhui/data/adni/images/141_S_6240/2018-03-11/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 17,860 mm³, 40.5% below the reference mean. With a Z-score of -0.96 (16.8th percentile), this represents normal volume ; hippocampal volume measures 6,776 mm³, 15.6% below the reference mean. With a Z-score of -1.56 (6.0th percentile), this represents moderate atrophy; whole brain volume measures 1,084,720 mm³, 4.4% below the reference mean. With a Z-score of -0.62 (26.7th percentile), this represents normal volume ; entorhinal cortex volume measures 3,236 mm³, 24.1% below the reference mean. With a Z-score of -1.67 (4.8th percentile), this represents moderate atrophy; fusiform gyrus volume measures 19,992 mm³, 0.4% above the reference mean. With a Z-score of 0.03 (51.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,978 mm³, 1.9% below the reference mean. With a Z-score of -0.16 (43.7th percentile), this represents normal volume . ",
  "text_data": "Age is 66.9 years. Gender is Male. Education: 18 years. Handedness: Right. Race: White. MMSE: 30.0. MoCA: 28.0. Logical Memory: 17.0. APOEε4 alleles: 0.0. Biomarker levels: Flobetaben (FBB): 0.95 SUVR (mild reduced). ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal and entorhinal cortex volumes show moderate atrophy (Z-scores -1.56 and -1.67, respectively), which are early markers of Alzheimer's pathology. However, cognitive scores (MMSE 30, MoCA 28) are intact, and other brain regions are within normal ranges.  \n**Diagnosis:** **Mild Cognitive Impairment (MCI)** (due to structural changes without significant cognitive decline).  \n**Confidence:** **Medium** (clinical correlation needed to confirm progression).",
  "timestamp": "2025-07-26T17:08:03.481612"
}