{
  "ptid_time": "941_S_1195_2018-04-05",
  "img_path": "/data/qiuhui/data/adni/images/941_S_1195/2018-04-05/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 51,259 mm³, 9.0% above the reference mean. With a Z-score of 0.26 (60.3th percentile), this represents normal volume ; hippocampal volume measures 6,609 mm³, 5.1% below the reference mean. With a Z-score of -0.44 (32.8th percentile), this represents normal volume ; whole brain volume measures 1,007,400 mm³, 2.1% below the reference mean. With a Z-score of -0.28 (39.1th percentile), this represents normal volume ; entorhinal cortex volume measures 5,898 mm³, 48.6% above the reference mean. With a Z-score of 3.18 (99.9th percentile), this represents profound enlargement; fusiform gyrus volume measures 18,140 mm³, 0.4% above the reference mean. With a Z-score of 0.04 (51.4th percentile), this represents normal volume ; middle temporal gyrus volume measures 18,460 mm³, 8.5% below the reference mean. With a Z-score of -0.76 (22.3th percentile), this represents normal volume . ",
  "text_data": "Age is 87.9 years. Gender is Male. Education: 20 years. MMSE: 30.0. MoCA: 29.0. Logical Memory: 12.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The brain volume measurements show normal ranges for most regions, including the hippocampus and whole brain, with no significant atrophy. The entorhinal cortex shows profound enlargement, which is unusual but not typical of Alzheimer's pathology. Cognitive scores (MMSE 30, MoCA 29) are intact, and there is no APOE4 risk allele.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to the atypical entorhinal cortex enlargement, though cognitive performance is strong)",
  "timestamp": "2025-07-26T17:27:24.608989"
}