{
  "ptid_time": "033_S_1308_2007-02-08",
  "img_path": "/data/qiuhui/data/adni/images/033_S_1308/2007-02-08/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 51,373 mm³, 33.4% above the reference mean. With a Z-score of 0.80 (78.8th percentile), this represents normal volume ; hippocampal volume measures 5,864 mm³, 22.4% below the reference mean. With a Z-score of -2.19 (1.4th percentile), this represents significant atrophy; whole brain volume measures 991,654 mm³, 8.1% below the reference mean. With a Z-score of -1.06 (14.6th percentile), this represents mild atrophy; entorhinal cortex volume measures 2,541 mm³, 38.0% below the reference mean. With a Z-score of -2.58 (0.5th percentile), this represents significant atrophy; fusiform gyrus volume measures 14,614 mm³, 22.4% below the reference mean. With a Z-score of -1.91 (2.8th percentile), this represents moderate atrophy; middle temporal gyrus volume measures 16,538 mm³, 22.5% below the reference mean. With a Z-score of -2.02 (2.2th percentile), this represents significant atrophy. ",
  "text_data": "Age is 79.7 years. Gender is Male. Education: 14 years. Handedness: Right. Race: White. Medical history: Cardiovascular; Respiratory; Allergies or Drug Sensitivities; Major Surgical Procedures. MMSE: 23.0. Logical Memory: 0.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: AD.",
  "gpt_diagnosis": "**Reasoning:** The data shows significant atrophy in the hippocampus, entorhinal cortex, and middle temporal gyrus—key regions affected in Alzheimer's disease. The MMSE score of 23 suggests mild cognitive impairment, and the presence of one APOE4 allele increases Alzheimer's risk.  \n\n**Diagnosis:** **Dementia (likely Alzheimer’s disease)**  \n**Confidence:** **High**",
  "timestamp": "2025-07-26T05:33:42.899307"
}