{
  "ptid_time": "009_S_1199_2007-01-16",
  "img_path": "/data/qiuhui/data/adni/images/009_S_1199/2007-01-16/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 31,386 mm³, 25.5% above the reference mean. With a Z-score of 0.34 (63.2th percentile), this represents normal volume ; hippocampal volume measures 7,693 mm³.; whole brain volume measures 1,170,490 mm³, 1.8% below the reference mean. With a Z-score of -0.34 (36.9th percentile), this represents normal volume ; entorhinal cortex volume measures 3,425 mm³, 14.4% below the reference mean. With a Z-score of -1.27 (10.3th percentile), this represents mild atrophy; fusiform gyrus volume measures 20,193 mm³, 3.1% below the reference mean. With a Z-score of -0.47 (31.8th percentile), this represents normal volume ; middle temporal gyrus volume measures 24,330 mm³.. ",
  "text_data": "Age is 58.4 years. Gender is Male. Education: 13 years. Handedness: Left. Race: Black or African American. Medical history: Head, Eyes, Ears, Nose and Throat; Musculoskeletal. MMSE: 27.0. Logical Memory: 4.0. APOEε4 alleles: 0.0. ",
  "true_diagnosis": "Diagnosis: MCI.",
  "gpt_diagnosis": "**Reasoning:** The entorhinal cortex shows mild atrophy (Z-score -1.27, 10.3th percentile), which is an early marker of Alzheimer’s pathology, but other brain volumes (hippocampus, whole brain, fusiform gyrus) are within normal ranges. The MMSE score of 27 is borderline but still within normal limits for age, and the absence of APOE4 reduces genetic risk.  \n\n**Diagnosis:** **Mild Cognitive Impairment (MCI)**  \n**Confidence:** **Medium** (due to isolated entorhinal atrophy but otherwise normal cognitive and structural findings)",
  "timestamp": "2025-07-25T22:15:36.133503"
}