{
  "ptid_time": "009_S_0842_2006-09-07",
  "img_path": "/data/qiuhui/data/adni/images/009_S_0842/2006-09-07/t1.nii.gz",
  "img_finding": "Image findings: ventricular volume measures 36,501 mm³, 5.2% below the reference mean. With a Z-score of -0.13 (45.0th percentile), this represents normal volume ; hippocampal volume measures 7,723 mm³, 2.2% above the reference mean. With a Z-score of 0.21 (58.4th percentile), this represents normal volume ; whole brain volume measures 1,112,400 mm³, 3.1% above the reference mean. With a Z-score of 0.40 (65.4th percentile), this represents normal volume ; entorhinal cortex volume measures 3,442 mm³, 16.1% below the reference mean. With a Z-score of -1.09 (13.8th percentile), this represents mild atrophy; fusiform gyrus volume measures 18,398 mm³, 2.3% below the reference mean. With a Z-score of -0.20 (42.1th percentile), this represents normal volume ; middle temporal gyrus volume measures 25,290 mm³, 18.5% above the reference mean. With a Z-score of 1.66 (95.2th percentile), this represents moderate enlargement. ",
  "text_data": "Age is 73.6 years. Gender is Male. Education: 18 years. Handedness: Right. Race: White. Medical history: Psychiatric; Head, Eyes, Ears, Nose and Throat; Musculoskeletal; Renal-Genitourinary; Allergies or Drug Sensitivities. MMSE: 28.0. Logical Memory: 11.0. APOEε4 alleles: 1.0. ",
  "true_diagnosis": "Diagnosis: CN.",
  "gpt_diagnosis": "**Reasoning:** The entorhinal cortex shows mild atrophy (Z-score -1.09, 13.8th percentile), which is an early marker of Alzheimer's pathology, but hippocampal and whole brain volumes are normal. The MMSE score of 28 is within the normal range, and there are no other significant structural abnormalities.  \n**Diagnosis:** CN (Cognitively Normal)  \n**Confidence:** Medium (due to isolated entorhinal atrophy but otherwise normal cognitive and structural findings)",
  "timestamp": "2025-07-25T22:12:07.941242"
}