{
  "ptid_time": "073_S_2153_2012-02-22",
  "img_path": "/data/qiuhui/data/adni/images/073_S_2153/2012-02-22/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 35,075 mm³, 8.9% below the reference mean. With a Z-score of -0.21 (41.5th percentile), this represents normal volume ; hippocampal volume measures 8,568 mm³, 13.3% above the reference mean. With a Z-score of 1.30 (90.4th percentile), this represents mild enlargement; whole brain volume measures 949,553 mm³, 12.0% below the reference mean. With a Z-score of -1.56 (5.9th percentile), this represents moderate atrophy; entorhinal cortex volume measures 3,924 mm³, 4.3% below the reference mean. With a Z-score of -0.29 (38.5th percentile), this represents normal volume ; fusiform gyrus volume measures 17,860 mm³, 5.2% below the reference mean. With a Z-score of -0.44 (32.9th percentile), this represents normal volume ; middle temporal gyrus volume measures 19,879 mm³, 6.8% below the reference mean. With a Z-score of -0.62 (26.9th percentile), this represents normal volume . ",
  "text_data": "Age is 77.6 years. Gender is Male. Education: 14 years. Handedness: Right. Race: White. Medical history: Head, Eyes, Ears, Nose and Throat; Renal-Genitourinary; Major Surgical Procedures. MMSE: 30.0. MoCA: 25.0. Logical Memory: 13.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "Reasoning: The patient shows moderate whole brain atrophy (Z-score -1.56, 5.9th percentile) but normal hippocampal volume (mild enlargement, Z-score 1.30) and normal volumes in other key regions (entorhinal cortex, fusiform gyrus, middle temporal gyrus). Cognitive scores are borderline (MoCA 25/30) but MMSE is intact (30/30), and there is no APOE4 risk allele.  \nDiagnosis: **CN (Cognitively Normal)**  \nConfidence: **Medium** (due to borderline MoCA and whole brain atrophy, but preserved hippocampal volume and normal MMSE)",
  "timestamp": "2025-07-26T09:36:24.094770"
}