{
  "ptid_time": "067_S_0607_2008-05-02",
  "img_path": "/data/qiuhui/data/adni/images/067_S_0607/2008-05-02/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 20,852 mm³, 25.7% below the reference mean. With a Z-score of -0.59 (27.8th percentile), this represents normal volume ; hippocampal volume measures 6,178 mm³, 13.2% below the reference mean. With a Z-score of -1.21 (11.4th percentile), this represents mild atrophy; whole brain volume measures 901,284 mm³, 7.5% below the reference mean. With a Z-score of -0.95 (17.2th percentile), this represents normal volume ; entorhinal cortex volume measures 3,381 mm³, 7.9% below the reference mean. With a Z-score of -0.49 (31.3th percentile), this represents normal volume ; fusiform gyrus volume measures 14,621 mm³, 14.1% below the reference mean. With a Z-score of -1.28 (10.0th percentile), this represents mild atrophy; middle temporal gyrus volume measures 18,111 mm³, 5.5% below the reference mean. With a Z-score of -0.48 (31.6th percentile), this represents normal volume . ",
  "text_data": "Age is 79.5 years. Gender is Female. Education: 14 years. Handedness: Unknown. Race: Unknown. MMSE: 28.0. Laboratory findings: . APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The hippocampal and fusiform gyrus volumes show mild atrophy (Z-scores -1.21 and -1.28, respectively), which are early markers of Alzheimer's pathology. However, other brain regions are within normal limits, and the MMSE score of 28 is intact, suggesting no significant cognitive impairment.  \n\nDiagnosis: CN (Cognitively Normal)  \nConfidence: Medium (Mild atrophy in key regions raises concern, but preserved cognition supports CN.)",
  "timestamp": "2025-07-26T08:31:04.386682"
}