Asma Afzal Kiani, Sara Haider, Sana Sharif, Khadija Tul Kubra, Khushbu Fatima, Nadia Murtaza.
Comparison of Haller Index Values Calculated with Chest Radiographs versus Computed Tomography for Pectus Excavatum Evaluation.
Pak Armed Forces Med J Jan ;74(1):216-9.

Objective: To compare and correlate the value of the Haller index calculated with chest x-ray with the values calculated with a Computed Tomography (CT) scan. Study Design: Cross-sectional study.  Place and Duration of Study: Department of Radiology, Combined Military Hospital, Peshawar, Pakistan, from Jan to Jun 2018. Methodology: A total of 50 male patients aged ≥16 years presenting with pectus excavatum were included. Haller index was calculated after CT scan and X-ray. Results: The mean age of the patients was 20.20±2.34 years. The mean Haller Index for CT scan was 2.35±0.39, and the mean Haller Index for X-ray was 2.01±0.45. A strong and positive correlation existed between the Haller index for CT scans and X-rays (r=0.83).  Conclusion: X-rays can be used instead of CT scans to measure the Haller index and plan the surgical intervention with similar accuracy.

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