{
  "ptid_time": "016_S_5057_2014-04-22",
  "img_path": "/data/qiuhui/data/adni/images/016_S_5057/2014-04-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 52,276 mm³, 35.7% above the reference mean. With a Z-score of 0.86 (80.4th percentile), this represents normal volume ; hippocampal volume measures 6,395 mm³, 15.4% below the reference mean. With a Z-score of -1.50 (6.7th percentile), this represents moderate atrophy; whole brain volume measures 1,043,710 mm³, 3.3% below the reference mean. With a Z-score of -0.43 (33.4th percentile), this represents normal volume ; entorhinal cortex volume measures 2,887 mm³, 29.6% below the reference mean. With a Z-score of -2.01 (2.2th percentile), this represents significant atrophy; fusiform gyrus volume measures 18,212 mm³, 3.3% below the reference mean. With a Z-score of -0.28 (38.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 21,845 mm³, 2.4% above the reference mean. With a Z-score of 0.21 (58.4th percentile), this represents normal volume . ",
  "text_data": "Age is 76.2 years. Gender is Male. Education: 16 years. MMSE: 28.0. MoCA: 22.0. Logical Memory: 6.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The hippocampal volume shows moderate atrophy (Z-score -1.50, 6.7th percentile), and the entorhinal cortex exhibits significant atrophy (Z-score -2.01, 2.2nd percentile), both of which are strongly associated with Alzheimer's pathology. Despite normal MMSE (28), the MoCA (22) suggests mild cognitive impairment, and the absence of APOE4 does not rule out neurodegeneration.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **High**  \n\n*(Key findings: Medial temporal atrophy + borderline MoCA, but preserved global cognition on MMSE. Likely prodromal Alzheimer's or non-AD neurodegenerative MCI.)*",
  "timestamp": "2025-07-26T00:38:40.676636"
}